I-316 Stainless Steel: Iipropati, Usetyenziso, kunye neSikhokelo seBanga

Imarike yezixhobo zaselwandle yehlabathi idlula i-$6 yeebhiliyoni ngonyaka, kwaye phantse zonke izixhobo ezingamelani nokugqwala ezikwiinqanawa zixhomekeke kwi-alloy enye ethile. Iinjineli kunye nabaphathi bokuthenga bayazi i-316 stainless steel njengophuculo "lwenqanaba laselwandle" ukusuka kwi-standard 304, kodwa izizathu zobugcisa ezingasemva kobungcono bayo—kwaye okubaluleke ngakumbi kushishino—ixabiso eliphantsi elingama-20-35%—zifuna ukuqonda okungcono kumacandelo amaninzi.

Ukuqonda intsimbi engagqwali engama-316 kufuna uphando olunzulu oluya ngaphaya kokumelwa kwayo kwentengiso. Le ngxubevange ifuna ukongezwa kwe-molybdenum engama-2-3% kuba isebenza njengento ebalulekileyo eseka amandla ayo okumelana nokugqwala kwe-chloride esetyenziswa kwiindawo ezinamanzi anetyuwa kunye nokulungiswa kweekhemikhali kunye nokusetyenziswa kwezonyango. Imfuneko yokusebenzisa intsimbi engagqwali engama-316 kuzo zonke iindawo ezisetyenziswayo zentsimbi engagqwali ibangela inkcitho ephantsi, ngelixa ukuziqhelanisa nokungacacisi izixhobo kwiindawo ezifuna amandla kubangela ukuwohloka kwezixhobo kwangoko okufuna imijikelo yokutshintshwa ebiza kakhulu.

Esi sikhokelo sibonelela ngesiseko sobugcisa sokukhetha amanqaku ngobuchule. Uza kufunda umahluko ochanekileyo wokwakheka kweekhemikhali phakathi kweenguqulelo ze-316, 316L, kunye ne-316Ti , indlela yokubala amaxabiso e-PREN othelekiso lokumelana nemingxuma, amaxabiso akhoyo kwimarike kwiindawo zehlabathi, kunye nemida ethile yokusingqongileyo apho i-316 ingaba yinto engaxoxiswana ngayo.

Eli nqaku libonelela ngeenkcukacha kunye nezikhokelo zokukhetha ezikunceda ekukhetheni izinto zokwakha elunxwemeni okanye izixhobo zamayeza okanye izixhobo zokucubungula iikhemikhali. Iqela lethu lobunjineli libonelela ngeenkonzo zokubonisana ngokukhetha izixhobo zobugcisa ezijongana neemfuno zakho zesicelo.

Yintoni 316 Steel Stainless?

Intsimbi engagqwali ye-austenitic chromium-nickel alloy 316 ine-2-3% ye-molybdenum, evumela isinyithi ukuba simelane nokugqwala kwe-chloride pitting kunye ne-crevice corrosion ngcono kunentsimbi engagqwali ye-304 eqhelekileyo . Ulwakhiwo olwahlukileyo lwe-316 lwenza ukuba ibe lolona khetho lubalaseleyo lwezinto ezisetyenziswa kwiindawo zaselwandle kunye nokulungiswa kweekhemikhali kunye neemeko ezibandakanya ukudibana neetyuwa kunye nee-asidi kunye neemveliso zokucoca ezinamandla.

I-alloy ineempawu ezingezizo zemagnethi kwaye inamandla okwakheka kakuhle kunye nokukwazi ukuwelda, zinto ezo ziyimpawu ezibalulekileyo zosapho lwe-austenitic. Le nto ifumana ukhuseleko olungcono lokugqwala kune-304 ngexabiso layo le-PREN (Pitting Resistance Equivalent Number), eliqala kwi-24 ukuya kwi-26 ngelixa i-304 inoluhlu lwe-18 ukuya kwi-20.

I-Standard 316 iqulethe i-carbon ephezulu ye-0.08% kodwa i-carbon variant ephantsi ye-316L (i-carbon ephezulu ye-0.03%) ilawula ukwenziwa kwe-welded kuba isusa iingozi zokuziva kwindawo echaphazelekileyo bubushushu. Izinto ze-titanium-stabilized 316Ti zithintela ukuna kwe-carbide ngomxholo wayo we-titanium ekufuneka uhlangabezane neemfuno ze-5×(carbon + nitrogen) kwizicelo ezidlula i-800°F (425°C).

Kutheni i-316 ibizwa ngokuba yi-“Marine Grade”

Uphawu “lomgangatho wolwandle” lubonisa amandla e-316 okunyamezela ukuchatshazelwa ziindawo zetyuwa kunye neendawo zokutshiza kunye neemeko zomoya ezikunxweme, kodwa olu phawu lufuna isiqinisekiso esibalulekileyo. I-316 ikhusela ngempumelelo kwi-atmospheric salt corrosion nangona kunjalo inkqubo yayo yokuzikhusela iyasilela xa ivezwa kumanzi olwandle anamanqanaba e-chloride aphakathi kwe-19,000 kunye ne-35,000 ppm ngaphandle kobunjineli obufanelekileyo kunye nokukhuselwa kwe-cathodic kunye nokugcinwa rhoqo.

Iinjineli zisebenzisa "umthetho weemayile ezi-5" kwiindawo ezikunxweme oluthi izixhobo ezikumgama weemayile ezi-5 zamanzi anetyuwa kufuneka zisebenzise iimayile ezingama-316 nangaphezulu kuyo nayiphi na i-hardware eya kubonakala kuluntu. Ukusebenza kwezinto ezingama-304 kusanele kwiimeko ezininzi ezingabandakanyi iimfuno ezithile zokuvezwa kweekhemikhali eziya kufuna ukuphuculwa. Ukusetyenziswa kweemayile ezi-duplex ezifana ne-2205 (PREN 35+) kunye nee-super-duplex alloys kumisela ukhuseleko olufanelekileyo ngokuchasene nokugqwala kokuntywiliselwa emanzini olwandle kunye neemeko zokuhamba ngesantya esiphezulu.

316 Ukwakhiwa kweMichiza yeNsimbi engenaStainless

Ukumelana nokugqwala kwentsimbi engagqwali engama-316 kuvela kwibhalansi echanekileyo ye-alloying element. Ngelixa i-chromium kunye ne-nickel zibonelela ngesiseko esabelwana ngaso ne-304 grade, i-molybdenum inika ukumelana kwe-chloride eyahlula i-316 njenge-alloy ye-premium kwiindawo ezinoburhalarhume.

Element	316 (UNS S31600)	316L (UNS S31603)	itheko
IChromium (Cr)	16.0-18.0%	16.0-18.0%	Yenza umaleko we-oxide okhuselayo
Umzimveliso (Ni)	10.0-14.0%	10.0-14.0%	Iqinisa i-austenite, iphucula ukuqina
IMolbdenum (Mo)	2.0-3.0%	2.0-3.0%	Iphucula ukumelana ne-chloride
Ikhabhoni (C)	≤0.08%	≤0.03%	Ichaphazela ukudityaniswa kunye nokuqonda
I-Manganese (Mn)	≤2.00%	≤2.00%	I-Deoxidizer, iphucula ukusebenza okushushu
I-Silicon (Ewe)	≤0.75%	≤0.75%	I-Deoxidizer
IPhosphorus (P)	≤0.045%	≤0.045%	Umda wokungcola olandelelweyo
Isalfure (S)	≤0.030%	≤0.030%	Umda wokungcola olandelelweyo
Initrojeni (N)	≤0.10%	≤0.10%	Iphucula ukuxhathisa ukugxunyekwa kwemingxuma
Intsimbi (Fe)	ibhalansi	ibhalansi	Isiseko sesiqalelo

Umahluko kwiMolybdenum

I-Molybdenum iguqula ukusebenza kokugqwala kwe-316 ngokusebenzisa indlela ethile: izinzisa umaleko we-chromium oxide ongasebenziyo ngokuchasene nokungena kwe-chloride ion. Ifilimu engasebenzisiyo kwi-304 stainless steel iyaqhekeka kwiindawo ezithile xa ivezwa kwiikloride ezirhabaxa ezithi emva koko zenze imingxunya ekhula ngokukhawuleza. I-2-3% ye-molybdenum kwi-316 iyacothisa oku kuqhekeka kwaye inciphise amazinga okukhula kwemingxunya ngama-40-60% kwiindawo ezinetyuwa.

Esi siphumo sibonakala siluncedo kakhulu kwi:

• Iindawo zokutshiza emanzini ezinomoya omanzi/owomileyo ojikelezayo
• Ukucubungula iikhemikhali okubandakanya ukudibana kwe-hydrochloric okanye i-sulfuric acid
• Izixhobo zedama lokuqubha ezivezwe emanzini anekhlorini
• Ukucubungula ukutya kusetyenziswa rhoqo i-sanitizer esekelwe kwi-chloride
• Ukuvezwa kwetyuwa kwiindlela nakwiibhulorho

Ukongezwa kwe-molybdenum kukwaphucula ukumelana nokunciphisa ii-asidi kwaye kwandisa amandla obushushu obuphezulu, nangona ezi nzuzo zingaphantsi kokumelana ne-chloride eqhuba uninzi lweenkcazo ezingama-316.

Iinkcukacha ze-ASTM A240

I-ASTM A240/A240M ilawula iinkcukacha zepleyiti, ishiti, kunye nomcu wombhobho wesitya soxinzelelo kunye nokusetyenziswa ngokubanzi. Umgangatho uchaza ubuncinci beempawu zoomatshini ekufuneka zifezekiswe yi-316:

• Amandla Amandla: ubuncinci i-515 MPa (75 ksi) kwi-316; i-485 MPa (70 ksi) kwi-316L
• Amandla eSivuno (0.2% offset): ubuncinci i-205 MPa (30 ksi) kwi-316; i-170 MPa (25 ksi) kwi-316L
• Uluhlu: ubuncinci i-40% kubude begeyiji ye-50mm
• ukuqina: ubuninzi be-95 HRB okanye i-217 HBW

I-ASME SA240 isebenzisa iimfuno ezifanayo zeekhemikhali nezoomatshini ukuze kuthotyelwe ikhowudi yebhoyila kunye nenqanawa yoxinzelelo, kunye neemfuno ezongezelelweyo zesatifikethi kwezi zicelo zibalulekileyo kukhuseleko.

316 vs 316L vs 316Ti: Iindidi ezahlukeneyo zeBanga

Iintlobo ezintathu eziphambili zentsimbi engagqwaliyo engama-316 zibonelela ngeemfuno ezahlukeneyo zokusetyenziswa. Ukukhetha uhlobo oluchanekileyo kuthintela iindleko ezingeyomfuneko ngelixa kuqinisekiswa ukusebenza kakuhle kwenkonzo.

Umgangatho 316 (UNS S31600)

Umgangatho 316 uqulethe ikhabhoni efikelela kwi-0.08%, nto leyo eyenza ukuba ifaneleke ukusetyenziswa ngaphandle kokuwelda okanye apho ukuqhoboshelwa emva kokuwelda kuluncedo khona. Umxholo ophezulu wekhabhoni unika amandla amakhulu kancinci kumaqondo obushushu aphezulu xa kuthelekiswa ne-316L, nangona le nzuzo ingaqhelekanga ukuthethelela ukuqhoboshelwa okunciphileyo.

Cacisa umgangatho 316 xa:

• Izinto ezisetyenzisiweyo zenziwe ngomatshini webha okanye ipleyiti ngaphandle kokuwelda
• Ukucoca isisombululo emva kokuwelda (1040-1100°C kulandele ukupholisa ngokukhawuleza) kunokwenzeka
• Amandla aphezulu obushushu aphezulu abalulekile kwaye akufuneki ukuwelda

Kuphephe umgangatho ongu-316 xa:

• Ukwenziwa kwe-welded kuyabandakanyeka kwaye unyango lobushushu emva kwe-weld alusebenzi
• Amaqondo obushushu enkonzo adlula ama-450°C kangangexesha elide (umngcipheko wokuziva ukhululekile)

I-316L Low Carbon (UNS S31603)

I-316L ilawula ukusetyenziswa kwe-316 yanamhlanje ngokunciphisa i-carbon ukuya kwi-0.03%. Umxholo we-carbon oncitshiswayo ngama-62.5% odlula umgangatho we-316 ngoko ke uthintela ukuna kwe-chromium carbide kwimida yeenkozo ngexesha lokudityaniswa, okukhusela ukugqwala kwe-intergranular ngaphakathi kwendawo echaphazelekileyo bubushushu.

Igama elithi “L” livela kwigama elithi “low carbon,” kwaye olu tshintsho kufuneka luchazwe phantse kuzo zonke izakhiwo ezidityanisiweyo. Ukuncipha okuncinci kwekhabhoni ephezulu evumelekileyo (0.03% vs 0.08%) kubangela ukunciphisa okuncinci kwamandla ngelixa kubonelela ngokuphuculwa okukhulu kokuxhathisa ukugqwala kwiindawo ezidityanisiweyo.

Cacisa i-316L xa:

• Nakuphi na ukuwelda, ukurhawuzelela, okanye ukusika ngobushushu kuyabandakanyeka
• Izixhobo zisebenza kuluhlu lobushushu bokuzwela oluyi-450-850°C
• Ukumelana nokugqwala ixesha elide kwizakhiwo ezidityanisiweyo kuyafuneka
• Ufuna ukuphelisa iindleko zonyango lobushushu emva kokuwelda

Umahluko kwiipropati zoomatshini ukusuka kumgangatho 316:

• Amandla emveliso aphantsi kancinci (170 MPa vs 205 MPa ubuncinci)
• Ukumelana nokugqwala okulinganayo kwizicelo ezingadityanisiweyo
• Ukusebenza kakuhle kwamalungu adibeneyo awelted

I-316Ti Titanium-Zinzisiwe (UNS S31635)

I-316Ti yongeza i-titanium kwi-5×(carbon + nitrogen) ubuncinci ukuya kwi-0.70% ephezulu, idala ii-titanium carbides ezikhethwayo endaweni yee-chromium carbides ngexesha lokuvezwa kubushushu obuphezulu. Oku kuzinzisa kugcina ukumelana nokugqwala kumaqondo obushushu apho i-316 kunye ne-316L ziya kuvakala khona.

Cacisa i-316Ti xa:

• Amaqondo obushushu enkonzo afikelela kwi-800-900°F (425-480°C) kangangexesha elide
• Ukujikeleza kobushushu ngokusebenzisa uluhlu lokwazisa kwenzeka rhoqo
• Ukuqhoboshelwa emva kokuwelda akunakwenzeka kwaye kufuneka ukumelana nobushushu obuphezulu

Utshintshiselwano xa kuthelekiswa ne-316L:

• Ixabiso eliphezulu ngenxa yokongezwa kwe-titanium kunye nobunzima bemveliso
• Ukuqina okuncitshisiweyo kancinci xa kuthelekiswa ne-316L
• Ukufumaneka okuncinci xa kuthelekiswa ne-316L

Kwiinkqubo ezininzi, i-316L inika ukusebenza okwaneleyo ngexabiso eliphantsi. Gcina i-316Ti kwiimfuno ezithile zobushushu obuphezulu apho uvakalelo lungenakunyamezelwa.

IiPropati zoomatshini nezoMzimba

I-316 stainless steel inika iipropati zoomatshini ezifanelekileyo kwizicelo zesakhiwo ngelixa igcina ukwakheka kunye nokuqina okulindelekileyo kwiindidi ze-austenitic.

IiPropati zeMechanical zoBubushushu beGumbi

ipropati	316	316L
Amandla Amandla	I-515-620 MPa	I-485-620 MPa
Amandla eSivuno (0.2%)	I-205 MPa	I-170 MPa
Ubude (50mm)	≥40%	≥40%
Imodyulus ye-Elasticity	I-200 GPa	I-200 GPa
Ukuqina (Rockwell B)	≤95 HRB	≤95 HRB
Ukuqina (Brinell)	≤217 HB	≤217 HB

Umxholo ophezulu we-nickel (10-14% xa kuthelekiswa ne-304's 8-10.5%) unegalelo ekuqineni nasekuguquguqukeni kwe-316, nto leyo evumela imisebenzi enzima yokwenza ngaphandle kokuqhekeka. Ukusebenza ngokubandayo kwandisa amandla kunye nobunzima ngokuqiniswa komsebenzi, nangona oku kunciphisa ukuxhathisa ukugqwala kancinci ngokuphazamisa umaleko ongasebenziyo.

Ubushushu bokusebenza

Izicelo zeCryogenic : I-316 kunye ne-316L zigcina ukuqina okuhle kumaqondo obushushu aphantsi njenge-200°C (-328°F), nto leyo eyenza ukuba zifaneleke ukuphathwa kwe-LNG kunye nezixhobo zokugcina i-cryogenic. Isakhiwo se-cubic austenitic esisebusweni sithintela utshintsho lwe-ductile-to-brittle olubonwa kwiiklasi ze-ferritic kunye ne-martensitic.

Imida yoBushushu obuPhakamileyo :

• Inkonzo eqhubekayo: 925°C (1700°F) ubuninzi
• Ukuchatshazelwa rhoqo: 870°C (1600°F) ubuninzi
• Uluhlu lokuvavanya: 450-850°C (kuphephe ukuba kule nqanaba kwi-standard 316)

Kumaqondo obushushu angaphezu kwama-800°F (425°C), ukusasazwa kwekhabhoni kuyakhawuleza. I-Standard 316 ifuna isisombululo esifakwe emva kokuwelda ukuze kubuyiselwe ukumelana nokugqwala. I-316L imelana nokuziva ngcono, ngelixa i-316Ti inyamezela la maqondo obushushu ngaphandle konyango olukhethekileyo.

Properties Properties

• mninzi: 7.98 g/cm³ (0.288 lb/in³) – ngaphantsi kancinci kune-304's 8.0 g/cm³
• Uluhlu olunyibilikayo: 1370-1400°C (2500-2550°F)
• Ukwandiswa kobushushu: 16.5 × 10⁻⁶/°C (20-100°C) – iphezulu kunentsimbi yekhabhoni; kufuneka uyilo oluhambelanayo kwiindawo ezahlukeneyo zentsimbi
• Ukuqhuba Ukushisa: 16.3 W/m·K kwi-100°C – malunga ne-25% ye-carbon steel conductivity
• Ubushushu obuthile: 500 J/kg·K
• Ukuhlaliswa kombane: 74 × 10⁻⁸ Ω·m (iphezulu kunentsimbi yekhabhoni, echaphazela iimfuno zokufaka ubushushu be-weld)

Ukumelana nokugqwala kunye namaxabiso e-PREN

Ukuqonda ukumelana nokugqwala kwe-316 kufuna ukudlulela ngaphaya kweenkcazo "ezilungileyo/ezingcono/ezingcono" zomgangatho ukuya kwiimilinganiselo zobungakanani ezivumela izigqibo zobunjineli. Ixabiso le-PREN libonelela ngolu lwakhiwo.

Ukuqonda i-PREN (iNombolo elinganayo yokuchasana nokugrumba)

I-PREN yinkcazo yethiyori ebeka umlinganiselo wokumelana kwee-alloys nokugqwala kwemingxuma ngokusekelwe kulwakhiwo lweekhemikhali. Eyona fomyula yamkelweyo ngokubanzi:

I-PREN = %Cr + 3.3(%Mo) + 16(%N)

Kwi-316 enokwakheka okuqhelekileyo:

• I-Chromium: 17%
• I-Molybdenum: 2.5%
• I-nitrogen: 0.08%

Ukubala : 17 + 3.3(2.5) + 16(0.08) = 17 + 8.25 + 1.28 = ~26.5

kwiBanga	I-PREN eqhelekileyo	Inqanaba lokuxhathisa i-Chloride
304	18-20	Amanzi amatsha, i-chloride ephantsi
316 / 316L	24-28	I-chloride ephakathi, umoya wolwandle
317	28-32	I-chloride ephezulu kune-316
2205 I-Duplex	35	Imelana namanzi olwandle
2507 Super Duplex	42	Iindawo ezimanzi olwandle ezinzima

Amaxabiso e-PREN angaphezu kwama-32 ngokubanzi athathwa njengayimfuneko ukuze kubekho ukungcola rhoqo emanzini olwandle. I-PREN engama-316 engama-~26 inika ukumelana okuhle kakhulu nokugqwala komoya waselwandle kunye nokutshizwa kwetyuwa okungapheliyo, kodwa ukuntywiliselwa rhoqo emanzini olwandle kufuna uyilo olucokisekileyo, ukugqunywa, okanye ukuphuculwa ukuya kwiindidi ezimbini.

Ukusebenza kokumelana neChloride

Intsimbi engagqwaliyo engama-316 ibonisa ukumelana okugqwesileyo neemeko eziqulethe i-chloride ngaphakathi kwemida yayo ye-PREN:

Izicelo ezifanelekileyo :

• Ukuvezwa emoyeni olwandle (i-spray yetyuwa, iindawo zokutshiza)
• Iindawo zokudada (1-3 ppm chlorine)
• Ukucubungula ukutya ngee-chloride sanitizers (i-quaternary ammonium, i-chlorine dioxide)
• Izakhiwo ezikunxweme olungaphakathi kweekhilomitha ezi-5 ukusuka elwandle
• Ukuvezwa kwetyuwa ebandayo (iindlela, iibhulorho)

Isilumkiso Esifunekayo :

• Ukuntywiliselwa emanzini olwandle rhoqo ngaphandle kokukhuselwa yi-cathodic
• Ukuhamba kwamanzi olwandle ngesantya esiphezulu (ukukhukuliseka-ukubola)
• Amanzi olwandle amileyo anomsebenzi weentsholongwane (MIC)
• I-Hydrochloric acid kumanqanaba angaphezu kwe-5%

Amanqanaba okuGqwala :

• Umoya wolwandle: <0.01 mm/ngonyaka
• Indawo yokuchitheka kwamanzi olwandle: <0.10 mm ngonyaka xa uyilo lufanelekile
• Ukuntywiliselwa emanzini olwandle rhoqo: 0.1-0.5 mm/ngonyaka (utshintsho; uyilo lwemigangatho emibini endaweni yoko)

Izinto Eziqwalaselwayo Ngokugqwala Kwemiqolo

Ukubola kwe-cravice kwenzeka kwiindawo ezikhuselekileyo (ii-gaskets, ii-lap joints, phantsi kweediphozithi) apho ukuncipha kwe-oksijini kudala iiseli zoxinzelelo. Umthamo we-molybdenum we-316 uphucula ukumelana nokubola kwe-cravice xa kuthelekiswa ne-304, kodwa uyilo olufanelekileyo luhlala lubalulekile:

• Ziphephe iimfanta ezixineneyo kwiindawo zaselwandle
• Uyilo lokukhupha amanzi ukuze kuthintelwe ukubanjwa kolwelo
• Cacisa i-316L yeejoyinti ezidityanisiweyo apho imingxunya ingenakuphepheka khona
• Cinga ngamanqanaba amabini xa kukho imeko enzima yokuqhekeka

Izicelo zeNtsimbi Engagqwaliyo ezingama-316 ngokweShishini

Ukudibanisa ukumelana nokugqwala, iimpawu zoomatshini, kunye nokuhambelana kwezinto eziphilayo kwenza intsimbi engagqwali engama-316 ibe yinto ekhethwayo kumashishini ahlukeneyo. Ukukhethwa kokusetyenziswa kuxhomekeke ekuhambelaniseni iintlobo ezithile zemigangatho neemeko zenkonzo.

Usetyenziso lwaseLwandle nonxweme

Iindawo zaselwandle zimele indawo esetyenziswa kakhulu kwi-316. Ukudibanisa i-atmospheric salt spray, i-splash exposure, kunye nomswakama ophezulu kufuna ukumelana ne-chloride okunikezelwa yi-molybdenum.

Izicelo Eziqhelekileyo Zolwandle :

• Izixhobo zenqanawa: Iintsimbi, ii-cleats, ii-hinges, izixhobo zedekhi
• Uyilo lwezakhiwo zonxweme: Izibambo, iifacade, izibophelelo ezikumgama weemayile ezi-5 ukusuka elunxwemeni
• Ukuphathwa kwamanzi olwandle: Iishafti zepompo, izinto zevalvu, iityhubhu zokutshintsha ubushushu (kunye neendlela zokhuseleko zoyilo)
• Izixhobo zaselunxwemeniIzixhobo zeplatifomu, izixhobo zokucubungula ezingaphezulu kwendawo yokutshiza
• I-AquacultureIzixhobo zokutyala iikheji, izixhobo zokuthambisa

"Umthetho weemayile ezi-5" unika isikhokelo esisebenzayo: chaza amanqanaba angama-316 okanye ngaphezulu kuyo nayiphi na into evezwe emoyeni wolwandle ngaphakathi kweemayile ezi-5 zamanzi anetyuwa. Ngaphaya kwale ndawo, vavanya iimeko ezithile zokuvezwa—ungcoliseko lwemizi-mveliso, iityuwa zokususa i-icing, okanye inkungu yonxweme isenokufuna i-316 nangona umgama ukusuka elunxwemeni.

Ukuze kuntywiliswe emanzini olwandle rhoqo, i-316 ifuna ukuqwalaselwa ngononophelo kuyilo. Ukukhuselwa kwe-Cathodic, ukugqunywa, okanye iinkcukacha ze-duplex 2205 (PREN 35) zinokuba nexabiso eliphantsi kune-316 kwizinto ezibalulekileyo ezintywilisiweyo.

EzoNyango kunye nezaMachiza

Intsimbi engagqwaliyo eyi-316L iphambili ekuvelisweni kwezixhobo zonyango ngenxa yokuhambelana kwazo nezinto eziphilayo, ukunyamezela ukubulala iintsholongwane, kunye nokumelana nokugqwala kwiindawo zomzimba.

Izicelo zonyango :

• Izixhobo zotyando: Ii-Scalpels, ii-forceps, ii-retractors (316L zokuhambelana nokubulala iintsholongwane)
• Izinto ezifakelweyo zexeshana: Iipleyiti zethambo, izikrufu, iiphini zokubopha ukwaphuka (zisusiwe emva kokuphola)
• Izinto ezifakelweyo ezisisigxina: 316LVM (i-vacuum melted) ye-heart stents, ii-orthopedic implants ezifuna inkonzo yobomi bonke
• Izixhobo zamachiza: Ukucubungula iitanki, imibhobho, izixhobo zokucoca
• izicelo zamazinyoIzixhobo kunye neeprosthetics zexeshana

Umahluko phakathi kwe-316L kunye ne-316LVM (ASTM F138) ubalulekile kwii-implants ezisisigxina. Ukunyibilikisa i-vacuum arc kunciphisa zonke izinto ezingcolileyo ezibandakanya i-sulfur kunye ne-phosphorus kunye nezinto ezingezizo zesinyithi eziqala ukuqhekeka kokudinwa. I-alloy ye-316LVM ibonisa isakhiwo esincinci esingenazo phantse i-ferrite ngelixa amandla ayo okudinwa efikelela kabini kunaleyo ye-316L eqhelekileyo, nto leyo eyenza ukuba ibaluleke kwii-implants ezithwala umthwalo ezifuna ukukhuselwa ekusileleni okubi.

Kwizixhobo zotyando kunye nee-implants zexeshana, i-316L esemgangathweni inika ukusebenza okwaneleyo ngexabiso eliphantsi. Gcina i-316LVM kwii-implants ezisisigxina okanye izinto ezibalulekileyo zokhuseleko.

Ukwenziwa kweMichiza

Izityalo zeekhemikhali zisebenzisa amandla e-316 okumelana ne-sulfuric acid, i-phosphoric acid, kunye neekhemikhali ezahlukeneyo ze-organic kumanqanaba aphakathi kunye namaqondo obushushu.

Izicelo zoShishino lweeKhemikhali :

• Ukuphathwa kwe-sulfuric acid: Amatanki kunye nemibhobho ye-asidi enyibilikisiweyo (kusebenza imida yoxinzelelo kunye nobushushu)
• Imveliso ye-phosphorus acid: Izixhobo zokukhupha ubushushu, izixhobo zokutshintshiselana ubushushu
• Ukulungiswa kweekhemikhali ze-organic: Ii-reactors, iikholamu zokunyibilikisa, izitya zokugcina izinto
• Izixhobo zePetrochemical: Izinto zokutshintsha ubushushu, izitya zoxinzelelo, imibhobho
• Intlama nephephaIzixhobo zokugaya ukutya, izixhobo zokumhlophelisa

Imida : I-316 ayifanelekanga kwi-hydrochloric acid engaphezulu kwe-5% yoxinzelelo, i-hydrofluoric acid, okanye i-sulfuric acid exineneyo kumaqondo obushushu aphezulu. Soloko ujonga iitshathi zokugqwala ukuze ufumane indibaniselwano ethile yeekhemikhali/yoxinzelelo/yobushushu.

Ukulungiswa kokutya kunye neZiselo

Intsimbi engagqwaliyo ye-Food grade 316 isebenza apho ukumelana nokugqwala kwe-304 kunganeli.

Izicelo zoShishino lokuTya :

• Ukutya okune-asidi ephezulu: Ukucubungula iitamatisi, izixhobo ze-citrus, iitanki zokukha
• Utywala kunye nokudila: Iitanki zokubilisa, izitya zokuguga, izinto zokutshintshiselana ubushushu
• Ukulungiswa kobisiIzixhobo ezifuna ukucoca rhoqo nge-chloride
• Inyama kunye neenkukhu: Izixhobo zokucubungula ngeenkqubo zokucoca ezibukhali
• Ukuphatha ityuwa: Iitanki zetyuwa, izixhobo zokucubungula ityuwa

I-FDA iyaqaphela i-316 njenge-GRAS (Ngokubanzi Iyaziwa Njengekhuselekileyo) yokunxibelelana kokutya phantsi kwe-21 CFR 175.300, ukuba ukugqitywa komphezulu kuyahlangabezana neemfuno zococeko (ngesiqhelo i-Ra ≤ 0.8 μm). Isatifikethi se-NSF/ANSI 51 siqinisekisa ukufaneleka kwezixhobo zokutya.

Intsimbi Engagqwaliyo ye-316 vs 304: Isikhokelo Sokukhetha

Isigqibo phakathi kwentsimbi engagqwaliyo ye-316 kunye ne-304 simele enye yezona ngxaki zixhaphakileyo zokukhetha izinto ekuthengweni kwemizi-mveliso. Iprimiyamu yeendleko ye-20-35% ye-316 ifanelekile kuphela xa iimeko zokusingqongileyo zifuna ukumelana kwayo nokugqwala okuphuculweyo.

Uthelekiso olusecaleni

ipropati	304 Insimbi Engenasici	316 Insimbi Engenasici
Chromium	18-20%	16-18%
nickel	8-10.5%	10-14%
Molybdenum	nanye	2-3%
Ixabiso le-PREN	~ 18-20	~ 24-26
Iindleko ezizalanayo	Isiseko (100%)	120-135%
Umoya waselwandle	Imbi – igqwala kwisithuba seenyanga	Ubomi obugqwesileyo – iminyaka eli-10 nangaphezulu
Ukunyangwa kweChloride	KuNcinci	Ilungile ukuya kwi-1000 ppm
IBanga lokutya	Ewe (i-pH engathathi hlangothi)	Ewe (kubandakanya ne-asidi)
Ubushushu obuphezulu	Ilungile ukuya kuthi ga kwi-800°C	Ilungile ukuya kuthi ga kwi-925°C

Xa i-304 Yanele

Cacisa i-304 xa iimeko zokusingqongileyo zihlala zingenabungozi kwaye ukusebenza kakuhle kweendleko kubekwe phambili:

• izicelo zangaphakathi ngaphandle kokuvezwa ziikhemikhali
• Iindawo zamanzi acocekileyo (amachibi, imilambo, amanzi kamasipala)
• Ukulungiswa kokutya kunye nokutya okungathathi cala kwe-pH (ukubhaka, ubisi olungena-asidi)
• Izixhobo zemizi-mveliso ngokubanzi kwiindawo ezilawulwayo
• I-Architectural trim kwiindawo zasezidolophini okanye zasemaphandleni (ezingekho kunxweme)
• Izixhobo zekhaya kunye neempahla zabathengi

Ukusebenzisa i-316 kwezi zicelo akuniki nzuzo yokusebenza ngelixa kunyusa iindleko zezinto zokwakha ngama-20-35%. Ukonga okuvela kwiinkcukacha ezichanekileyo ze-304 kunokuba luncedo kakhulu kwiiprojekthi ezinkulu.

Xa kufuneka i-316

Cacisa i-316 xa ukuchatshazelwa yi-chloride, ukudibana neekhemikhali, okanye iimfuno zomthetho zifuna ukumelana nokugqwala okuphezulu:

• Iindawo zaselwandle: Ngaphakathi kweekhilomitha ezi-5 ukusuka elunxwemeni okanye naluphi na ukungcola kwamanzi anetyuwa
• Amachibi okubhukudaAmanzi aneklorini ahlasela ama-304 ngokukhawuleza
• Ukulungiswa kwemichiza: Ukudibana kwe-sulfuric, i-phosphoric, okanye i-organic acid
• Imveliso yamayeza: Apho i-316L ichazwe khona ukuze icoceke
• Izixhobo zonyangoIzixhobo zotyando kunye nezinto ezifakelweyo
• Ukulungiswa kokutya okune-asidi ephezulu: Iitumato, i-citrus, iviniga, ukubilisa
• Ukuvezwa kwetyuwa eyomileyoIzixhobo zendlela, iibhulorho, izixhobo zetonela
• Iimeko zemizi-mveliso: Ukuveliswa konxweme, izityalo zeekhemikhali

Isakhelo sokuHlalutya iNdleko-yeNzuzo

Uthelekiso lokwenyani lweendleko ludlulela ngaphaya kwexabiso lezinto ezibonakalayo ukuya kuqoqosho lomjikelo wobomi:

Imeko 1 : Inkqubo yesandla esiselunxwemeni

• 304 ukhetho: Iindleko zezinto ezisetyenzisiweyo ze-$10,000, ukutshintshwa kwazo kwiminyaka emi-3-5 ngenxa yomhlwa
• 316 ukhetho: Ixabiso lezinto eziphathekayo le-$13,000, ubomi benkonzo obungaphezu kweminyaka eli-15
• isigqibo: 316 inika ubomi obuphindwe kathathu ngeprimiyamu engama-30% = ukhetho olucacileyo lwezoqoqosho

Imeko yesi-2 : Izixhobo zokulungisa ukutya zangaphakathi (i-pH engathathi cala)

• 304 ukhetho: Iindleko zezinto eziphathekayo ze-$50,000, ubomi benkonzo yeminyaka engama-20
• 316 ukhetho: Iindleko zezinto eziphathekayo ze-$65,000, ubomi benkonzo yeminyaka engama-20 (akukho nzuzo yokusebenza)
• isigqibo: 304 inika ukusebenza okulinganayo ngexabiso eliphantsi

Isilumkiso Sokucacisa Okugqithisileyo : Abanye oonjineli bachaza i-316 “ukuba ikhuselekile” kuzo zonke izicelo. Le ndlela yokugcina izinto ichitha uhlahlo-lwabiwo mali ngaphandle kokuphucula ukusebenza. Yenza uvavanyo olufanelekileyo lokusingqongileyo—usetyenziso lwangaphakathi, olune-chloride ephantsi alufane luvumele iprimiyamu ye-316.

Isikhokelo samaxabiso se-316 Stainless Steel (2024-2025)

Amaxabiso entsimbi engagqwaliyo engama-316 abonisa iindleko zezinto eziluhlaza eziguquguqukayo, ngakumbi i-nickel kunye ne-molybdenum, kunye neendleko zamandla zengingqi kunye nemigaqo-nkqubo yorhwebo.

Uluhlu lwamaxabiso angoku (ekupheleni kuka-2025)

Ummandla	Ixabiso ngekg	Ixabiso ngeToni nganye	amaNqaku
ITshayina (i-FOB)	$2.10-$4.90	$2,100-$4,900	Umvelisi oxabisa kancinci; 55% yobonelelo lwehlabathi
Indiya	$2.50-$4.70	$2,500-$4,700	Ukukhula kwamandla okuthumela ngaphandle
eunited States	$4.50-$6.20	$4,500-$6,200	+25% Impembelelo yerhafu yeCandelo 232
iYurophu	$4.45-$5.80	$4,450-$5,800	Iindleko eziphezulu zamandla; ukuphunyezwa kwe-CBAM ngo-2026
mpuma Asia	$4.60-$5.10	$4,600-$5,100	Iimarike ezixhomekeke ekungeniseni impahla kwamanye amazwe

Ixabiso ngokweFomu yeMveliso

imo	Uluhlu lwamaxabiso (USD/kg)	amaNqaku
Amashiti aqengqelekayo abandayo (ukugqitywa kwe-2B)	$3.50-$5.50	Uninzi lwefom yemveliso eqhelekileyo
Iipleyiti ezigoqwe ngobushushu (ukugqitywa kwenombolo 1)	$3.20-$4.80	Iindawo ezityebileyo, ukusetyenziswa kwemizi-mveliso
Amaphepha acwebezelisiwe (No. 4, HL)	$5.50-$7.00	Izicelo zoyilo/zokuhombisa
Iikhoyili ze-316L (i-Asia FOB)	$4.40-$4.80	Ifomu yokuthenga ngobuninzi
Amaphepha e-316Ti	$3.90-$7.20	Iprimiyamu eyi-15-30% ngaphezulu kwe-316L
Iipayipi/iityhubhu ezingenamthungo	$5.00-$7.20	Izicelo zoxinzelelo

Ukuguquguquka kwembali (2024-2025)

• Incopho kaMatshi 2024: $6.30/kg (Imiqathango yokuthumela ngaphandle i-nickel e-Indonesia, ukuphazamiseka kokunikezelwa kwe-molybdenum)
• Ukuya kutsho ngoDisemba 2023: $4.15/kg
• Uluhlu lukaNovemba 2025: $4.50-$4.70/kg (izinzile)

Abaqhubi bamaxabiso aphambili :

• nickel: ~11% yokwakheka; ukuguquguquka kwexabiso le-LME kuchaphazela ngokuthe ngqo iindleko ezingama-316
• Molybdenum: 2-3% yomxholo; yongeza $0.80-$1.20/kg xa amaxabiso enyuka
• amandlaAbavelisi baseYurophu bajongene neendleko zamandla eziphindwe kabini ukuya kwezintathu xa kuthelekiswa neTshayina
• Umgaqo-nkqubo woRhweboIirhafu zeCandelo lama-232 lase-US zidala izithuba zamaxabiso ze-15-25% phakathi kwemimandla

Iingcebiso zokuThenga iiMpahla

Kwiiprojekthi ezinkulu zokuthenga, cinga ngala maqhinga:

1. Iziqendu zokunyusa izinto eziphathekayo: Imigaqo yesivumelwano evumela ukulungiswa kwamaxabiso kwiintshukumo ze-nickel/molybdenum ezingaphezulu kwemida echaziweyo
2. Uluhlu lwezinto ezicwangcisiweyo: Thenga ngexesha lokuhlawula amaxabiso xa ixesha leprojekthi livuma
3. Ukuguquguquka kweenkcukachaApho i-316L kunye ne-316 zombini zamkelekile, cela amaxabiso azo zombini
4. Ukufunyanwa kwempahla kwiindawo ezithileAmaxabiso e-FOB aseTshayina abonelela ngokonga okukhulu; qwalasela ukuthunyelwa, imisebenzi, kunye namaxesha okunikezelwa kweenkonzo
5. Mill Test Certificates: Qinisekisa ukuba i-MTC iyahambelana nenqanaba elichaziweyo (316 vs 316L) ngokuqinisekiswa kwe-MTC

Izikhokelo zokuWelda kunye nokuFaka

Iinkqubo ezifanelekileyo zokuwelda zibalulekile ukugcina ukumelana nokugqwala kwe-316. Indawo echaphazeleka bubushushu (HAZ) isengozini yokuziva ukuba kusetyenziswa iindlela ezingafanelekanga okanye iintsimbi zokuzalisa.

Ukukhetha iMetal yeFiller

Kwi-316 base metalSebenzisa ucingo/intonga yokugcwalisa eyi-316 okanye eyi-316L
Kwi-316L base metalSebenzisa ucingo/intonga yokugcwalisa eyi-316L (iyathandwa)

Udidi lwentsimbi yokuzalisa i-AWS A5.4 E316L yee-electrodes ezinamathelayo okanye i-ER316L yentambo ye-MIG/TIG iqinisekisa ukwakheka okufanayo. Ungaze usebenzise i-308L filler kwisinyithi esisisiseko se-316—ukungabikho kwe-molybdenum kwisinyithi se-weld kudala isibini se-galvanic esinokuxhathisa ukugqwala okuncinci.

Iingcebiso zeNkqubo yokuWelda

inkqubo	Udidi lweZizalisi	amaNqaku
TIG (GTAW)	I-ER316L	Ulawulo olungcono, olukhethwayo kwiindawo ezincinci
I-MIG (GMAW)	I-ER316L	Amanani aphezulu okubekwa kwiindawo ezixineneyo
Intonga (SMAW)	E316L	Ukuwelda ebaleni, amandla okukwazi ukwenza yonke into
I-Flux-cored (FCAW)	E316LT1-1/-4	Ukufakwa okuphezulu, ukuwelda okungaphandle kwendawo

Ukuthintela ukuSaziseka

Ukurhawuzelelwa kwenzeka xa ikhabhoni idibana ne-chromium kwimida yeenkozo ngexesha lokufudumeza kuluhlu lwama-450-850°C, nto leyo enciphisa iindawo ezikufutshane ze-chromium kwaye inciphise ukumelana nokugqwala.

Amaqhinga okuthintela :

1. Cacisa i-316L: Umthamo ophantsi wekhabhoni uthintela ukwakheka kwekhabhoyidi
2. Nciphisa igalelo lobushushu: Sebenzisa i-amperage ephantsi, isantya sokuhamba esikhawulezayo
3. Lawula ubushushu be-interpass: Gcina ngaphantsi kwe-150°C kwii-welds ezininzi
4. I-post-weld annealing: Kwi-standard 316, isisombululo se-anneal kwi-1040-1100°C silandelwe yi-rapid water quench

Unyango lwasemva kweWeld

I-316L edityanisiweyo: Yamkelekile ngokubanzi kwiimeko ezininzi zenkonzo; i-carbon ephantsi ithintela uvakalelo
Umgangatho odibeneyo 316: Ingadinga ukutsalwa kwesisombululo kwizicelo ezibalulekileyo zokugqwala
Ukukhetha kunye nokuthanda: Isusa isikali se-weld kwaye ibuyisela umaleko ongasebenziyo; ibalulekile kwinkonzo yolwandle kunye neekhemikhali

Imiba yeWelding eqhelekileyo

Ukuqhekeka okushushu : Akwenzeki rhoqo kwi-316 ngenxa yesakhiwo sayo esithambileyo, kodwa kunokwenzeka xa ithintelwe kakhulu. Sebenzisa uyilo olufanelekileyo lwamalungu kunye nentsimbi yokuzalisa.

Ukujikajika : I-coefficient ephezulu yokwandisa ubushushu (16.5 × 10⁻⁶/°C) ibangela ukujikajika okungaphezulu kune-carbon steel. Sebenzisa i-skip welding, i-fixturing, kunye ne-heat input elawulwayo.

Ukunciphisa ukumelana nokugqwala kwi-HAZ : Kuncitshiswa ngokusebenzisa isiseko sesinyithi se-316L kunye nokukhetha okufanelekileyo kwesithambisi.

Iinkcukacha kunye neMigangatho

I-316 stainless steel ilawulwa yimigangatho emininzi yamazwe ngamazwe eqinisekisa ukwakheka kweekhemikhali okulinganayo, iimpawu zoomatshini, kunye neempawu zokusebenza.

Imigangatho ye-ASTM (eMelika)

I-ASTM A240/A240M : Inkcazo esemgangathweni yePlati yeNsimbi engenasici yeChromium kunye neChromium-Nickel , iPhepha, kunye neStrip yeeVessels zoXinzelelo kunye nezicelo eziBanzi

• Ichaza imida yokwakheka kweekhemikhali kwi-316 (S31600), 316L (S31603), 316Ti (S31635)
• Icacisa ubuncinci beempawu zoomatshini
• Iireferensi zokunyamezelana, ukugqitywa komphezulu, iimfuno zovavanyo

I-ASME SA240 : Ukwamkelwa kweKhowudi yeBoiler kunye neVessel Pressure Vessel ye-ASTM A240

• Iimfuno ezifanayo zeekhemikhali kunye nezoomatshini
• Isatifikethi esongezelelweyo kunye neemfuno zenkqubo yomgangatho
• Kufuneka ukwakhiwa kwenqanawa yoxinzelelo kwiindawo ezisetyenziswayo

I-ASTM F138 : Inkcazo eQhelekileyo yeBha yeNtsimbi engaGciniyo kunye neNtambo yeZifakelo zotyando (316LVM)

• Iimfuneko zokunyibilikisa i-vacuum ukuze kuhlambuluke kakhulu
• Imida yomxholo weFerrite
• Iimfuno zepropathi yoomatshini eziphuculweyo

Imigangatho yaseYurophu

I-EN 10088-2 : Iimeko zobuchwephesha zokuhanjiswa kweshiti/ipleyiti kunye nomcu weentsimbi ezimelana nokugqwala ngeenjongo eziqhelekileyo

• 1.4401 (X5CrNiMo17-12-2) = 316
• 1.4404 (X2CrNiMo17-12-2) = 316L
• 1.4571 (X6CrNiMoTi17-12-2) = 316Ti

EN 10204 : Iimveliso zesinyithi—Iintlobo zamaxwebhu okuhlola

• 3.1 Iimfuno zeSatifikethi soVavanyo lweMill (MTC) ukuze kulandelelwe
• Ukuqinisekiswa kokwakheka kweekhemikhali
• Iziphumo zovavanyo loomatshini

Imigangatho yaseAsia

I-JIS G4304 : Ipleyiti yentsimbi engagqwaliyo eshushu, ishiti kunye nomcu

• I-SUS 316 = 316
• I-SUS 316L = 316L

I-JIS G4305 : Ipleyiti yentsimbi engagqwaliyo eqengqelekayo, ishiti kunye nomcu

GB/T 3280 : Ipleyiti yentsimbi engagqwaliyo eqengqelekayo, ishiti kunye nomcu (eTshayina)

• 06Cr17Ni12Mo2 = 316
• 022Cr17Ni12Mo2 = 316L

I-GB/T 4237 : Ipleyiti yentsimbi engagqwaliyo eshushu, ishiti kunye nomcu (eTshayina)

ImiGangatho yezoNyango

I-ISO 5832-1 : Izinto ezifakelweyo zotyando—Izinto zesinyithi—Icandelo 1: Intsimbi engagqwaliyo eyenziweyo

• Umgangatho wehlabathi wezixhobo zokufakelwa utyando
• Iimfuno zokwakheka kunye nepropati yoomatshini

I-ASTM F139 : Inkcazo eQhelekileyo yePhepha leNtsimbi engaGciniyo kunye neStrip yeZifakelo zotyando (ezenziwe nge-316L)

Iimfuneko zokuQinisekiswa

Xa ufuna ukuthenga izinto zoshishino, chaza oku kulandelayo:

• Isatifikethi soVavanyo lweMill (EN 10204 3.1): Ukwakhiwa kweekhemikhali kunye neempawu zoomatshini
• Isiqinisekiso sezinto eziphathekayo: Ukuthobela imigangatho echaziweyo (ASTM A240, EN 10088-2, njl.njl.)
• Ukuhlolwa komntu wesithathu: SGS, BV, okanye uqinisekiso olulinganayo (lucetyiswa kwizicelo ezibalulekileyo)
• Ukulandelelana: Ukulandelela inani lobushushu ukusuka kwi-mill ukuya kwimveliso egqityiweyo

FAQ

Uthini umahluko phakathi kwe-316 kunye ne-316L yensimbi engenasici?

I-316L iqulethe i-carbon eyi-0.03% ephezulu xa ithelekiswa ne-316's ephezulu eyi-0.08%. Lo mxholo uphantsi we-carbon uthintela ukuna kwe-chromium carbide kwimida yeenkozo ngexesha lokudityaniswa, nto leyo ephelisa ukuvakala kunye nokugqwala phakathi kwe-granular kwindawo echaphazelekileyo bubushushu. Zonke izakhiwo ezidityanisiweyo kufuneka zisebenzise i-316L ngelixa umgangatho we-316 kufuneka usetyenziswe kuphela kwiindawo ezingadingi ukudityaniswa okanye eziya kudityaniswa nesisombululo emva kokudityaniswa.

Ngaba i-316 yensimbi engenasici inozibuthe?

Le nto ayibonisi phantse iimpawu zemagnethi emva kokuba idlule kwinkqubo yokutsalwa kwe-annealing kuba i-316 isebenza njengezinto ezingezizo zemagnethi. Amanqanaba e-austenitic abonisa isakhiwo sekristale ye-cubic esijonge ubuso esikhokelela kwimpendulo encinci yemagnethi. Inkqubo yokusebenza ngokubandayo idala i-ferromagnetism encinci ngophuhliso lwe-martensite nangona isiphumo sihlala siphantsi (ukungangeni kwamanzi).

Ixabisa kangakanani i-316 kune-304?

Ixabiso lentsimbi engagqwaliyo engama-316 lidlula i-304 grade ngama-20-35%. Amaxabiso emarike angoku aqala kwi-2.10/kg (ChinaFOB) ukuya kwi-2.10/kg (ChinaFOB) ukuya kwi-6.20/kg (yasekhaya yase-US), kunye namaxabiso eprimiyamu avela kumanqanaba ahlukeneyo e-molybdenum kunye ne-nickel kunye nomthamo wemveliso. Umahluko weendleko uyatshintsha ngokwexabiso lemarike yezinto eziluhlaza kuba iprimiyamu engama-316 inyuka iye kwi-40% xa amaxabiso e-nickel okanye e-molybdenum efikelela kumanqanaba aphezulu.

Ngaba i-316 stainless steel rust ingakwazi ukugqwala?

I-316 stainless steel iphuhlisa umhlwa phantsi kweemeko ezithile kuba imelana nokugqwala ngcono kune-304 stainless steel. Ungcoliseko lomphezulu nge-carbon steel (evela kwizixhobo, ekuphatheni, okanye ekugayweni kufutshane) kunokubangela amabala okugqwala "esinyithi esikhululekileyo". I-316 stainless steel ekugqibeleni iya kugqwala kwiindawo eziquka ukuntywiliselwa emanzini olwandle rhoqo kunye noxinzelelo oluphezulu lwe-chloride kunye nokuvezwa kwe-hydrochloric acid. Uyilo olufanelekileyo, ukugcinwa, kunye nokukhethwa kwamanqanaba kwindawo ethile kubalulekile.

Ithini ixabiso le-PREN elingu-316?

Ixabiso le-PREN lentsimbi engagqwaliyo engama-316 lilinganisa ama-24-26 ngokwefomula edibanisa ipesenti ye-chromium nepesenti ye-molybdenum ephindwe kathathu kunye nepesenti ye-nitrogen ephindwe kalishumi elinesithandathu. Ulwakhiwo oluqhelekileyo lwe-17% ye-chromium ene-2.5% ye-molybdenum kunye ne-0.08% ye-nitrogen luphumela ekubalweni kwama-26.5 ngale fomula. Ixabiso le-PREN lentsimbi engagqwali engama-304 liqala kwi-18 ukuya kuma-20 nto leyo ebonisa ukuba intsimbi engagqwali engama-316 inokumelana okuphezulu malunga nama-40 ekhulwini kwi-pitting. Umgangatho wokuvezwa kwamanzi olwandle rhoqo ufuna ukuba izinto zibe namaxabiso e-PREN adlula ama-32.

Ingaba intsimbi engagqwaliyo ye-316L yodidi lotyando?

Igama elithi “udidi lotyando” lisebenza ngokukodwa kwi-316LVM (ASTM F138) esebenza njengesixhobo esiqhelekileyo sokufakelwa okusisigxina, nangona i-316L isebenza njengesixhobo esiphambili sezixhobo zotyando kunye nokufakelwa okwethutyana. Igama elithi “VM” lithetha ukususwa kwe-vacuum arc, esebenza ukususa ukungcola kunye nezinto ezinokubangela ukungasebenzi kakuhle kokudinwa. Izixhobo zotyando ezisetyenziswa ekubulaleni iintsholongwane kunye nokusetyenziswa kwakhona zifuna i-316L esemgangathweni ukuze zisebenze ngokwaneleyo. Iinkqubo zokufakelwa kwee-heart stents kunye nokutshintshwa kwe-hip zifuna ukusetyenziswa kwe-316LVM njengesixhobo esichaziweyo.

Yeyiphi intonga yokuzalisa endifanele ndiyisebenzise xa ndidibanisa intsimbi engagqwaliyo engama-316?

Inkqubo yokuwelda yesinyithi esisisiseko se-316 ifuna isinyithi esizalisa i-316L, equka i-ER316L yokuwelda i-TIG/MIG kunye ne-E316L yokuwelda intonga. Isizalisa i-“L” siqinisekisa umxholo ophantsi wekhabhoni kwidiphozithi yokuwelda, nto leyo ethintela uvakalelo. Ukusetyenziswa kwesizalisa i-308L kwisinyithi esisisiseko se-316 kufuneka kuphetshwe kuba isinyithi esizalisa i-weld siya kulahlekelwa ngumxholo we-molybdenum, nto leyo ekhokelela ekunciphiseni ukumelana nokugqwala xa kuthelekiswa nesinyithi esisisiseko kwaye iseka isibini se-galvanic esinomngcipheko wokugqwala okhethiweyo.

Uthini umthetho weemayile ezi-5 kwintsimbi engagqwaliyo engama-316?

Izakhiwo ezisebenza ngaphakathi kweekhilomitha ezintlanu zamanzi anetyuwa zifuna iinkcukacha ezingama-316 okanye ngaphezulu zezixhobo zazo ezivezwayo. Umoya oselunxwemeni uthwala ityuwa, nto leyo ekhokelela ekungcoleni okukhawulezileyo kwe-304 ngelixa i-316 inika ukumelana okusebenzayo nxamnye nokutshizwa kwetyuwa emoyeni . Ngaphaya kweekhilomitha ezi-5, iimeko ezithile zoshishino kufuneka zivavanywe kuba ungcoliseko lwezoshishino kunye nokuvezwa kwetyuwa ecinyiweyo kunye nenkungu yonxweme zisenokwenza i-316 ibe yimfuneko ukuyisebenzisa.

isiphelo

I-316 stainless steel ifumana udumo lwayo njengomgangatho ophezulu we-austenitic ngokusebenzisa umxholo we-molybdenum we-2-3% ophucula ngokusisiseko ukumelana nokugqwala kwe-chloride. I-316 stainless steel isebenza ngokuthembekileyo kwiindawo zaselwandle, ekucutshungulweni kweekhemikhali nakwizicelo zonyango ezidlula imida yokusebenza yamanqanaba asemgangathweni phakathi kwexabiso layo le-PREN elimalunga nama-26 nama-40 ekhulwini ngaphezulu kwe-304 stainless steel.

Usapho lwe-316 luneentlobo ezahlukeneyo zodidi ezihlangabezana neemfuno ezithile zemveliso kunye nokusetyenziswa kokusebenza. I-336L kufuneka isetyenziswe kuzo zonke izakhiwo ezidityanisiweyo kuba ithintela uvakalelo lwezinto ezibonakalayo. Uhlobo oluqhelekileyo lwe-316 kufuneka lusetyenziswe kwiindawo ezingadityanisiweyo ezinokunyangwa emva kokudityaniselwa. I-316Ti kufuneka isetyenziswe kuphela kwiindawo ezisebenzisa ubushushu obuphezulu ezifuna ukuzinziswa kwe-carbide ngaphezulu kwama-800°F.

Ingqwalasela yeendleko ibalulekile. Ixabiso eliyi-20-35% ngaphezulu kwe-304 lifanelekile kwiindawo ezinobundlobongela—iindawo ezikunxweme, ukuvezwa kweekhemikhali, kunye nokusetyenziswa kwezonyango—apho iindleko zomjikelo wobomi zivumela ukumelana nokugqwala okuphezulu. Kwiindawo zangaphakathi ezineemeko ezingonakaliyo ukusetyenziswa kwentsimbi ye-316 kudala iindleko ezingafunekiyo kuba ayiboneleli naziphi na iingenelo zokusebenza. "Umthetho we-5-miles" kunye novavanyo lwe-PREN zibonelela ngezikhokelo ezisebenzayo zokukhetha amanqaku ngobuchule.

Umnini wesikhephe ufake izixhobo ezingama-304 ukunciphisa iindleko. Lonke ulwakhiwo lufune ukutshintshwa emva kweenyanga ezili-18 kuba ukugqwala kwetyuwa kwenza ukuba kungenzeki ukusebenza. Ukukhetha umgangatho ochanekileyo ekuthengweni kokuqala bekuya kubangela iindleko eziphezulu zokuqala. Inkqubo yokutshintshwa ibiya kubangela iindleko zokusebenza kweendleko zomsebenzi wokutshintshwa kunye nezixhobo kwiminyaka emibini elandelayo.

Kwiprojekthi yakho elandelayo equka izinto ezingamelani nokugqwala, nxibelelana neqela lethu lobunjineli ukuze ufumane iingcebiso zobugcisa malunga nokukhethwa komgangatho, iinkcukacha, kunye namaxabiso angoku. I-LIANYUNGANG DAPU METAL CO., LTD inikezela nge-316/316L/316Ti yentsimbi engagqwaliyo eneeshiti, iipleyiti, iikhoyili, kunye neefom ezicutshungulwayo ezinesiqinisekiso esipheleleyo sokugaywa kunye nokukwazi ukuhanjiswa kwihlabathi liphela.