I-Duplex 2205 (UNS S32205) inamandla aphindwe kabini kunentsimbi engagqwaliyo engama-316 kwaye imelana kakhulu ne-chloride pitting, i-crevice corrosion, kunye ne-stress corrosion cracking, kunye ne-PREN emalunga nama-35 xa ithelekiswa nama-25 kwi-316L. Ixabisa ngaphezulu nge-1.8 ukuya kwi-2.2 kg nganye kwaye isebenza kuphela phakathi kwe--50°C kunye ne-300°C. Khetha i-duplex 2205 yenkonzo ye-chloride efudumeleyo kunye namanzi olwandle. Hlala kwi-316 engaphezulu kwe-300°C, ngaphantsi kwe--50°C, okanye kwindawo ecocekileyo, ebandayo, nephantsi kwe-chloride.
Loo mhlathi mnye ugqiba uninzi lweeprojekthi. Eyona nto inzima kukwazi ukuba inkonzo yakho ikwicala lini, kwaye kulapho amanani abaluleke khona ngaphezu kokuthengisa.
Cinga ngesityalo seekhemikhali esasisebenzisa umgca wetyuwa oyi-316L kumaqondo obushushu angama-45°C. Lo mgca wahlangabezana nayo yonke imiqathango ngexesha lokuqalisa ukusebenza. Emva kweenyanga ezilishumi elinesibhozo, ukuvuza kwemingxuma ye-pinhole evela kwi-chloride pitting kwayivala le nkqubo kangangeentsuku ezine.
Isixhobo esitsha sika-2205 sisebenze iminyaka esixhenxe ngaphandle kwe-alamu yobukhulu bodonga. Ixabiso lesixhobo liphindwe kabini. Ukusilela kwaso kubize ngaphezulu kakhulu kunesixhobo esakha sasebenza.
Uninzi lweenjineli sele zisazi ukuba i-316 yimpendulo esisiseko yentsimbi engagqwaliyo. Esi sikhokelo sentsimbi engagqwaliyo ye-duplex 2205 vs 316 sikunika imiqathango, idatha yoomatshini, imithetho yokuwelda, kunye namaxabiso ka-2026 ekufuneka uwagqibe ukuba iprimiyamu ye-duplex izihlawulela nini. Ukuze ufumane umfanekiso obanzi kuqala, jonga isikhokelo sethu esipheleleyo sentsimbi engagqwaliyo.
IItrakthi ezibalulekileyo
- I-Duplex 2205 inika amandla amancinci okuvelisa i-450 MPa xa ithelekiswa ne-170 MPa kwi-316L, ngoko ke umlinganiselo ofanayo woxinzelelo udla ngokuvumela udonga oluncinci oluyi-30 ukuya kwi-50%.
- I-PREN yahlulahlula la manqanaba mabini ngokugqibeleleyo: malunga nama-35 kwi-2205 ngokuchasene malunga nama-25 kwi-316L. Loo msantsa lutshintsho lwenyathelo ekusebenzeni kwe-chloride, hayi inzuzo engaphantsi.
- I-2205 imelana nokuqhekeka kwe-chloride stress corrosion ngaphaya kwe-100°C, ngelixa i-316 inokuqhekeka ngaphezulu kwama-60°C phantsi koxinzelelo lokutsalwa.
- Ifestile yobushushu yeyona ibambekayo. I-2205 ilinganiselwe kwi--50°C ukuya kwi-300°C ngenxa yesigaba se-sigma kunye nokubhitya kwe-475°C. I-316 igubungela i--196°C ukuya kwi-800°C.
- Ukuwelda i-2205 kufuna i-ER2209 filler, igalelo lobushushu eliyi-0.5 ukuya kwi-2.5 kJ/mm, i-interpass engaphantsi kwe-150°C, kwaye akukho nyango lobushushu emva kokuwelda. Izizalisi ze-Austenitic ezifana ne-ER316L akufuneki zisetyenziswe.
Yintoni umahluko phakathi kweDuplex 2205 kunye ne-316 Stainless Steel?
I-Duplex 2205 yintsimbi engenasici enamabakala amabini eneendawo ezilinganayo ze-austenite kunye ne-ferrite. I-316 yi-austenitic ngokupheleleyo. Loo mahluko omnye wesakhiwo esincinci uchaza phantse yonke enye into: amandla okuvelisa aphindwe kabini, ukumelana okuphezulu kwemigodi, impendulo yemagnethi, kunye noqeqesho oluqinileyo lwe-welding.
Umahluko amathathu agqiba iiprojekthi zokwenyani.
- Amandla. I-2205 ifikelela ubuncinane kwi-450 MPa, ngoko ke iindonga ezincinci zithwala uxinzelelo olufanayo. Oku kutshintsha iindleko, ubunzima, kunye nendawo yokuxhasa.
- Ukumelana nokugqwala kwekloridi. I-PREN emalunga nama-35 yenza i-2205 ifanelekele amanzi olwandle kunye netyuwa efudumeleyo engenakukwazi ukuyiphatha i-316.
- Ingqeqesho yokuvelisa izinto. I-2205 ayixoleli kangako. Isinyithi esizalisa, igalelo lobushushu, kunye nobushushu obuphakathi kwe-interpass azizongcebiso.
Yonke into elandelayo kolu thelekiso ivela kwezo ngongoma zintathu. Itheyibhile ekhawulezayo ibeka isiseko.
| ipropati | 316 / 316L | Duplex 2205 | uncedo |
|---|---|---|---|
| Ulwakhiwo lweMicrost | I-austenite engama-100% | ~50% i-austenite, ~50% i-ferrite | 2205 |
| Amandla esivuno (min) | I-170-205 MPa | 450 MPA | 2205 (2.2-2.6x) |
| Amandla okuxinana (umzuzu) | I-485-515 MPa | 620 MPA | 2205 |
| I-PREN | 24-26 | 34-36 | 2205 |
| Umyinge we-Chloride SCC | ~60°C | > 100 ° C | 2205 |
| Ubushushu benkonzo enkulu | ~800°C | ~300°C | 316 |
| Ubushushu obuphantsi benkonzo | -196 ° C | ~-50°C | 316 |
| Magnetic | Hayi (isusiwe) | Ewe | cala |
| Ixabiso nge kg (umbhobho, 2026) | $ 2.20-4.30 | $ 4.80-7.20 | 316 |
Akukho nanye ikholamu ephumelela ngokupheleleyo. Impendulo echanekileyo ixhomekeke ekubeni iprojekthi yakho inqunyelwe nguwuphi umqolo.
I-Duplex 2205 vs 316 Ukwakhiwa kweeKhemikhali kunye neeLinganiselo zeBanga
Umahluko wokwakheka kwayo apho ukusebenza kwayo kuvela khona. I-Duplex 2205 ithwala i-chromium kunye ne-molybdenum engaphezulu kune-316, yongeza i-nitrogen, kwaye isebenzisa i-nickel encinci kakhulu.
| Element | 316 / 316L | Duplex 2205 |
|---|---|---|
| Chromium | 16.0-18.0% | 22.0-23.0% |
| nickel | 10.0-14.0% | 4.5-6.5% |
| Molybdenum | 2.00-3.00% | 3.0-3.5% |
| Iitrogen | ≤0.10% | 0.14-0.20% |
| ICarbon | ≤0.08 / ≤0.03% | ≤0.03% |
| IManganese | ≤2.00% | ≤2.00% |
| Silicon | ≤0.75% | ≤1.00% |
IBanga eliLinganayo
Zombini iiklasi zibhekisa kwimigangatho eyahlukeneyo, kwaye abathengi kufuneka baqinisekise izinto ezilinganayo kwisatifikethi somatshini wokugaya ngaphambi kokuba ba-odole.
- I-Duplex 2205: I-UNS S32205 (kunye ne-S31803 endala), i-EN 1.4462, i-X2CrNiMoN22-5-3, i-ASTM A182 F51 yee-forgings, i-F60 yee-forgings ezinamandla aphezulu.
- 316: UNS S31600, EN 1.4401, ASTM A182 F316.
- I-316L: I-UNS S31603, EN 1.4404 (kunye ne-1.4435 yohlobo lwe-low-carbon), i-ASTM A182 F316L.
Qaphela inkcukacha enye yeenkcukacha ezibangela ukuba abathengi bakhubeke. I-UNS S32205 kunye ne-S31803 zombini zithengiswa njenge-“2205,” kodwa i-S32205 inoluhlu oluqinileyo kwi-chromium, i-molybdenum, kunye ne-nitrogen. Xa ukumelana nokugqwala kubalulekile, chaza i-S32205 ngokucacileyo. Inqaku lethu malunga nokwakheka kwentsimbi engagqwaliyo ligubungela indlela izinto ezidibanisa ngayo izinto eziqhuba ukusebenza kusapho lonke.
Ifomula ye-PREN
I-PREN, i-Pitting Resistance Equivalent Number, yeyona ndlela ikhawulezayo yokubeka iintsimbi ezingasebenziyo kwinkonzo ye-chloride.
I-PREN = %Cr + 3.3 × %Mo + 16 × %N
Ukuqhuba ukwakhiwa kweendawo eziphakathi:
- I-Duplex 2205: 22 + (3.3 × 3.25) + (16 × 0.17) = malunga ne35
- I-316L: 17 + (3.3 × 2.5) + (16 × 0) = malunga ne25
Isithuba se-PREN esinamanqaku alishumi sitshintsha indawo apho izinto zisinda khona. I -International Molybdenum Association igcina idatha yesalathiso kwi-duplex metallurgy kunye nokubalwa kwe-PREN ukuba ufuna ukuqinisekisa amaxabiso kwamanye amanqanaba.
Enye into ebalulekileyo kwezorhwebo. Ngenxa yokuba i-2205 isebenzisa phantse isiqingatha se-nickel ye-316, ixabiso layo alilandeleli ukuguquguquka kwe-nickel ngokusondeleyo. Kwimarike ye-nickel ekhulayo, oko kunokunciphisa umsantsa weendleko ngokukhawuleza kunokuba abathengi belindele.
Ukumelana nokugqwala: I-Duplex 2205 vs 316 Intsimbi Engagqwaliyo
Ukugqwala kudla ngokuba sisizathu sokuba uthelekiso lwenzeke. Amanqanaba amabini ahlukene ngokucacileyo apha, kwaye ukwahlukana kuyalinganiswa.
| Uvavanyo loMhlwa | 316 / 316L | Duplex 2205 |
|---|---|---|
| I-PREN | 24-26 | 34-36 |
| Ubushushu obubalulekileyo bokufaka imingxuma (i-ASTM G48 Indlela E) | ~15-18°C | ~35-40°C |
| Ubushushu obubalulekileyo bomqolomba (ASTM G48 Indlela F) | Ngezantsi kwe-0 ° C | ~20-25°C |
| Umyinge we-Chloride SCC | ~60°C | > 100 ° C |
| Inkonzo yamanzi olwandle | Akafanelekanga | Ibanga lokungena kwinqanaba |
I-Pitting kunye neCrevice Corrosion
Ubushushu obubalulekileyo bokufaka imingxuma buyinombolo yoyilo eluncedo. Kwi-316L, ukufaka imingxuma kuqala kuluhlu lwe-15 ukuya kwi-18°C kwiimeko zovavanyo oluqhelekileyo lwe-chloride. Kwi-2205, loo mda ukufutshane ne-35 ukuya kwi-40°C. Ukubola kwemingxuma yeyona nto ithelekiswayo: I-316L iyasilela ngaphantsi kwe-0°C kuvavanyo oluqhelekileyo lwemingxuma, ngelixa i-2205 igcina malunga ne-20 ukuya kwi-25°C.
Enyanisweni, imingxunya yenzeka kwii-gaskets, phantsi kweediphozithi, kwiinzwane ze-weld, nakwiindawo ezingaphakathi ezidityanisiweyo. Ezo ziindawo kanye apho i-316 ihluleka khona kuqala kwinkonzo ye-chloride efudumeleyo, kwaye kanye apho i-2205 ikuthenga khona umda.
Uxinzelelo lwe-Corrosion Cracking
Ukuqhekeka koxinzelelo lwekloride yindlela yokusilela ephelisa umsebenzi we-316 kwinkonzo efudumeleyo. Iintsimbi ezingenasici ezisetyenziswa ngokupheleleyo zinokuqhekeka ngaphezulu kwama-60°C xa uxinzelelo lokuxinana kunye neekloride zidityanisiwe, yiyo loo nto imigca engama-316 egqunywe ziinshorensi kwizityalo zaselunxwemeni ingaphumeleli ngaphandle kwesilumkiso.
I-Duplex 2205 imelana ne-chloride SCC ngaphaya kwe-100°C, kuba isigaba se-ferrite siphazamisa ukusasazeka kwee-crack. Le yeyona ngxoxo inamandla yokuphucula kwiindawo zeekhemikhali kunye neenkqubo.
Amanzi olwandle
Phantsi kwe-NORSOK M-001, umgangatho wokukhetha izinto zaselwandle waseNorway, i-316L ayifanelekanga kwinkonzo yamanzi olwandle. I-Duplex 2205 idweliswe njengezinto zamanzi olwandle ezikumgangatho wokuqala, kunye ne-6Mo alloys kunye ne-super duplex 2507 ngaphezulu kwayo. Inqaku lethu malunga ne -316 stainless steel yenkonzo yaselwandle ligubungela apho amanqanaba e-austenitic ema khona, kunye neendlela ezipheleleyo zokugqwala zikho kwisikhokelo sethu sokumelana nokugqwala kwentsimbi engagqwali.
Apho i-2205 isasilela khona
I-Duplex ayikhuselekanga. I-brine exineneyo eshushu, imingxunya eqinileyo, kunye nee-chloride ezidityaniswe ne-oksijini kubushushu obuphezulu zinokuhlasela i-2205 nazo. Ezo mingcele zezona zibangela ukunyuka ukuya kwi-super duplex 2507 okanye i-6Mo alloy. Ukuze ufumane unyango olunzulu lwemida kunye neendlela zovavanyo, inqaku lethu elihamba naye malunga nokumelana nokugqwala kwe-duplex 2205 vs 316 liya phambili.
Awuqinisekanga ukuba inkonzo yakho ye-chloride ifuna luphi uhlobo? Iinjineli zethu zihlola iimeko zenkonzo, amanqanaba e-chloride, kunye neeprofayili zobushushu imihla ngemihla. Fumana uncedo lokukhetha izinto kwiqela lethu lobuchwephesha ngaphambi kokuba uzibophelele kwimigaqo ethile.
Amandla kunye neempawu zoomatshini
Kulapho i-duplex 2205 iyenza khona imeko yayo njengesixhobo sobunjineli endaweni yokuphucula nje ukugqwala.
| ipropati | 316L | 316 | Duplex 2205 |
|---|---|---|---|
| Amandla okuvelisa (i-0.2% offset, min) | 170 MPA | 205 MPA | 450 MPA |
| Amandla okuxinana (umzuzu) | 485 MPA | 515 MPA | 620 MPA |
| Ubude (min) | 40% | 40% | 25% |
| ukuqina | ~150-200 HB | ~150-200 HB | ~180-293 HB |
| mninzi | 8.00 g / cm³ | 8.00 g / cm³ | 7.80 g / cm³ |
| Imodyuli edibeneyo | ~193 GPA | ~193 GPA | ~200 GPA |
Kutheni iDuplex Microstructure Doubles Yield
Isigaba se-ferrite sithwala umthwalo ngokufanelekileyo kwaye sithintela ukuhamba kweplastiki kwi-austenite, ngoko ke izinto ziyamelana nokuguquguquka okuphindwe kabini kunoxinzelelo. Yiyo loo ndlela yonke. Ezi zigaba zimbini zikwathengisa iipropati: i-ferrite ivelisa amandla kunye nokumelana ne-chloride, i-austenite ivelisa ukuqina kunye nokudityaniswa.
Ingcamango Engachanekanga yeModulus
Ukuqina akuphucuki. I-elastic modulus iyafana kakhulu kwi-200 GPa xa ithelekiswa ne-193 GPa.
Oku kubalulekile kwezorhwebo. Ukuba uyilo lwakho lunomda wokuphambuka, njengobude bexesha obungaxhaswayo, i-duplex ayikuniki nto. Ukuba uyilo lwakho lunomda wokuxinezeleka, njengomda woxinzelelo, lukuthengela kakhulu.
Ukutshintshiselana kwiDuctility
Ukwandiswa kwe-longation kuyehla ukusuka kwi-40% kwi-316L ukuya kwi-25% ngo-2205. Ukuba i-ductility ephantsi yimbangela yokuba kube nzima ukugoba i-2205, kube nzima ukuyitsala nzulu, kwaye kube nzima ukuyilungisa xa kusenziwa imisebenzi. Ikwachaza indlela esebenza ngayo i-welding, kuba izinto ezisetyenzisiweyo zinamandla amancinci okufunxa ubunzima obushiyekileyo.
Ukuze ufumane ulwazi olupheleleyo ngeenkcukacha zoomatshini, jonga inqaku lethu malunga neempawu zoomatshini zentsimbi engagqwaliyo.
Inzuzo Yokuqina Kobunzima: Ubukhulu Bodonga kunye Nempembelelo Yeendleko
Inzuzo yamandla iguqulelwa ngqo kwizinto ezigciniweyo, kwaye le yinxalenye etshintsha incoko yeendleko.
Ngenxa yokuba uxinzelelo oluvumelekileyo kuyilo loxinzelelo lukhula ngamandla okuvelisa, uxinzelelo olufanayo loyilo luvumela udonga oluncinci kakhulu kwi-2205. Uthelekiso olubonisayo: apho umgca we-316L udinga udonga lwe-8.0 mm, umgca we-2205 kumlinganiselo ofanayo woxinzelelo unokufuna i-5.0 mm kuphela.
Iziphumo ziyahlangana.
- Ubunzima obuncinci. Udonga olubhityileyo oluyi-30 ukuya kwi-50% lunciphisa ubunzima ngendlela efanayo, nto leyo ebalulekileyo kwiirakhi zepayipi, iindawo eziphezulu zangaphandle, kunye nothutho.
- Umthamo we-weld omncinci. Iindonga ezincinci zithetha ukuba isinyithi esizalisayo asininzi kwaye zikhawuleza ukuwelda kwijoyinti nganye.
- Iinkxaso ezincinci. Umbhobho okhanyayo udinga inkxaso yesakhiwo esikhaphukhaphu.
- Ixabiso eliphantsi ngemitha nganye. Ixabiso le-premium ngekhilogram liyancipha kakhulu xa uthelekisa ixabiso ngemitha nganye kumlinganiselo woxinzelelo olulinganayo, kwaye kwezinye iinkcukacha liphantse linyamalale.
Elo nqaku lokugqibela lelona abathengi basoloko beliphosa. Ukuthelekisa i-duplex 2205 kunye ne-316 ngexabiso ngekhilogram yodwa kugqithisa iprimiyamu ye-duplex. Ukuthelekisa okunyanisekileyo yindleko ngemitha, okanye ixabiso ngoxinzelelo, kubukhulu bodonga olufunekayo kudidi ngalunye.
Ngaba ufuna amanani ngokweenkcukacha zakho? Sithumelele ubungakanani bemigca yakho kunye novavanyo loxinzelelo kwaye siza kusebenza nawe ekulinganiseni ubukhulu bodonga kunye nothelekiso lweendleko. Cela ikowuteshini yeemveliso ze-duplex okanye ze-316 ezingenasici.
Imida yoBushushu: Apho iBanga ngalinye lisebenza khona
Eli candelo lilapho i-duplex ilahlekelwa khona, kwaye ukungalinaki yindlela iiprojekthi ezingama-2205 ezihamba gwenxa ngayo.
| Umqathango weNkonzo | 316 / 316L | Duplex 2205 |
|---|---|---|
| I-Cryogenic | Ilungile ukuya kuthi ga kwi -196°C | Ayifanelekanga ngaphantsi kwe ~-50°C |
| I-Ambient ukuya kuma-300°C | Zintle | Zintle |
| Ngaphezulu kwe-300°C | Ilungile ukuya kuthi ga kwi ~800°C | Ayifanelekanga |
| Isivalo soyilo (iCandelo le-ASME II iCandelo D) | Ngaphezulu kwe-300°C | 315 ° C (600 ° F) |
| Ukuvezwa ixesha elide 300-525°C | eyamkelekileyo | Umngcipheko wokuqhekeka kwamazinyo kwi-475°C |
Kutheni u-2205 une-ceiling
Iindlela ezimbini zokubhitya zibeka umda ophezulu.
Isigaba seSigma. Phakathi kwama-550°C kunye nama-1000°C, kwaye ngamandla kakhulu kuma-700 ukuya kuma-950°C, isigaba se-sigma esityebileyo kwi-chromium siwela kwimida ye-ferrite-austenite. Ngo-2205 sinokuqhuma kwimizuzu emi-2 ukuya kwemi-5 kuma-800 ukuya kuma-900°C. Umonakalo uphindwe kabini: ukuncipha kwe-chromium ecaleni kweprecipitate kunciphisa i-PREN yendawo ngaphantsi komda we-pitting, kwaye ubunzima bempembelelo buyawa ukusuka ngaphezulu kwe-100 J ukuya ngaphantsi kwama-20 J. Phantse isiqingatha sokungaphumeleli kwe-duplex okuhlalutyiweyo kubandakanya isigaba se-sigma.
Ukuqhekeka kwe-475°C. Ukuvezwa ixesha elide phakathi kwe-300°C kunye ne-525°C kugubungela i-ferrite ngemvula ye-alpha-prime. Le yindlela ecothayo, eqokelelanayo, eyenza kube lula ukuyiphosa de kubekho iqhekeza.
Kutheni i-316 ingenasilingi esisebenzayo xa ithelekiswa nayo
I-Austenitic 316 ayinayo i-ferrite phase, ngoko ke akukho ndlela yokusebenza isebenzayo. Igcina ukuqina kwayo kubushushu be-nitrogen engamanzi kwaye imelana ne-oxidation ukuya kuthi ga kwi-800°C, nangona amandla ayo ehla ixesha elide ngaphambi koko. Kwinkonzo ye-cryogenic kunye nenkonzo yobushushu obuphezulu, i-316 yimpendulo echanekileyo.
Umgaqo osebenzayo umfutshane. Ukuba inkonzo yakho ingaphezulu kwama-300°C okanye ngaphantsi kwama--50°C, i-duplex 2205 ayisebenzi. Inqaku lethu malunga nemida yobushushu be-duplex 2205 ligubungela ngokweenkcukacha iibhendi ze-embrittlement.
Ukuwelda kunye nokuFakela iNsimbi engagqwaliyo eDuplex
Ukuwelda kulapho iiprojekthi ezingama-2205 zihlala zingaphumeleli khona, kwaye apho urhwebo luba yinto esebenzayo kunokuba lube yingcamango.
I-Filler Metal Ayixoxiswana
Sebenzisa i-ER2209 kwi-duplex 2205 nakwi-2205-to-316 joints ezahlukeneyo. Ungaze usebenzise i-ER308L, i-ER316L, okanye i-ER309L kwi-duplex.
Isizathu sise-metallurgical. I-duplex welding itshisa i-nitrogen, eyi-austenite stabilizer enamandla. I-ER2209 ihlawula ngokuphatha i-nickel engaphezulu nge-2 ukuya kwi-4% kune-base metal, ukuze idiphozithi ye-weld ikwazi ukulungelelanisa umxube wesigaba ekujoliswe kuso.
Izizalisi ze-Austenitic azinazo ezo mbuyekezo. Idiphozithi eyenziwe nge-ER308L iphuma ngaphezu kwe-80% ye-ferritic, ingaphantsi kakhulu kwe-PREN yesinyithi esisisiseko, kwaye inokuba nokuqhekeka kokuqina.
Loo nto ayingomngcipheko wethiyori. Ikhontraktha engaphandle kolwandle yakha yatshixa umbhobho ongaphantsi kolwandle we-2205 ngentambo ye-ER308L eyayisele isevenkileni. Imingxunya yokuqina yasasazeka kwii-welds ze-girth kwisithuba seenyanga ezintathu, kwaye ityala lokulungisa lafikelela kwiinombolo ezintandathu. Ithala leencwadi lobuchwephesha le-Welding and Fabrication ligubungela iimfuno zenombolo ye-ferrite kwi-ASME SFA-5.9 ukuba ufuna iinkcukacha zeenkcukacha ezisetyenzisiweyo.
Iiparameter zeNkqubo
- Igalelo lobushushu: 0.5 ukuya kwi-2.5 kJ/mm, kunye ne-0.8 ukuya kwi-1.5 kJ/mm njengendawo emnandi esebenzayo.
- Ubushushu bokunqumlana: Ubuninzi be-150°C. Iinkcukacha zamanzi olwandle zihlala ziqina oku ukuya kwi-120°C, kunye nee-super duplex 2507 caps kwi-100°C. I-Austenitic 316L ivumela i-175°C.
- Ukukhusela nokucoca igesi: i-argon ene-nitrogen eyi-1 ukuya kwi-2%. I-argon ecocekileyo ivelisa i-ferrite eninzi kakhulu.
- Injongo yeFerrite: Inani le-ferrite elingama-30 ukuya kuma-65, malunga ne-35 ukuya kuma-65% ye-ferrite ngokomthamo, eqinisekiswe yi-ferritescope okanye i-metallography ngexesha lokuqinisekiswa kwenkqubo.
Ukufakwa kobushushu kunqumla macala omabini. Ukupholisa okuphantsi kakhulu, nokukhawulezayo kushiya i-ferrite kunye ne-chromium nitrides engaphezulu kwindawo echaphazelekileyo bubushushu. Ukupholisa okuphezulu kakhulu, nokucothayo kwi-800 ukuya kwi-900°C band kunika ixesha le-sigma phase ukuba lenzeke.
Akukho Unyango Lobushushu Emva Kokushintshwa
Ukunciphisa uxinzelelo oluqhelekileyo kukwi-595 ukuya kwi-760°C, ngqo ngaphakathi kwendawo yemvula ye-sigma. Ukuyifaka kwi-duplex kuguqula isandi se-weld sibe buthathaka. Imeko ye-as-welded ichanekile.
Unyango olupheleleyo lobushushu oluvumelekileyo yi-anneal yesisombululo esipheleleyo kwi-1020 ukuya kwi-1100°C elandelwa yi-water quench ekhawulezayo, kwaye kuphela xa ibhalansi ye-ferrite iwela ngaphandle koluhlu olujoliswe kulo okanye uvavanyo lokugqwala lungaphumeleli. Isiqinisekiso senkqubo kufuneka siquke iindlela ze-ASTM A923 A/B/C zokuvavanya izigaba ezinobungozi ze-intermetallic.
Machining kunye Formability
Iimatshini zeDuplex 2205 zicotha kakhulu kune-316L, zihlala zisihla ngesantya sokusika esingama-20 ukuya kuma-30%, kwaye zinobunzima obuphezulu bokuguguleka kwezixhobo kunye nengqwalasela engakumbi ekuqineni komsebenzi. Ukwakheka kwazo kunzima kakhulu. Ukwandiswa okuphantsi kwama-25% kunye nokuphakama kwe-springback kwenza ukugoba kunye nokuzoba okunzulu kungathetheleli kangako.
Umenzi wezinto oqhele ukusebenzisa i-316 kuya kufuneka alungise isantya, ukutya, kunye nezixhobo. Inqaku lethu malunga noomatshini be-duplex 2205 kunye nokwenziwa kakuhle ligubungela imisebenzi yevenkile, kwaye iNorthern Manufacturing ipapasha isishwankathelo esiluncedo sokwenza izinto kwiiklasi ze-duplex.
Ukuba iworkshop yakho ayizange iqhube i-duplex ngaphambili, cwangcisa isiqinisekiso senkqubo ngaphambi kokuba iqalise imveliso kunokuba ibe ngexesha layo. Elo nyathelo linye lithintela uninzi lweziphene ezichazwe apha ngasentla.
Ngaba iDuplex 2205 ineMagnetic?
Ewe. I-Duplex 2205 inamandla anomtsalane ngenxa yesigaba sayo se-ferrite, kunye nokukhanya okuqhelekileyo okuphakathi kwe-1.5 ukuya kwi-5. I-Annealed 316 ngokusisiseko ayinamandla anomtsalane, kwaye ukukhanya okukufutshane ne-1.0.
Imiphumo emithathu esebenzayo ilandela.
- Ukuhlolwa. Ukuhlolwa kwee-particle ze-magnetic kusebenza kwi-2205 kodwa kunika iziphumo ezilahlekisayo kwi-annealed 316. Iinkqubo ze-NDT mazihambelane nezinto ezisetyenzisiweyo.
- Izixhobo zombane. Ii-flowmeter zemagnethi kunye nezinye izixhobo ezibuthathaka kumagnetic zifuna ukuphononongwa xa i-duplex ithatha indawo yee-austenitic grades.
- Ukuchonga intsimi. Imagnethi iya kutsala i-2205, nto leyo enceda ukuyihlula kwi-316 efakwe isinyithi. Ayiyi kuyihlula kwintsimbi yekhabhoni, ngoko ke imagnethi sisixhobo sokuvavanya endaweni yokuvavanya.
Isilumkiso esinye kwi-316: ukusebenza ngokubanda kubangela i-martensite ebangelwa kuxinzelelo, ngoko ke i-316 eyenziwe ngokubanda kakhulu okanye eyenziwe ngomatshini iba yimagnethi ebuthathaka. Oko kuqhelekile kwaye akubonisi ngxaki yezinto ezibonakalayo. I-Duplex yimeko eyahlukileyo ngokupheleleyo, kuba imagnethi yayo ivela kwisakhiwo esincinci ngokwaso. Inqaku lethu malunga nemagnethi yentsimbi engagqwaliyo ye-duplex ligubungela iindlela zokusebenza, kwaye isikhokelo sethu sokuxelela i-304 kwi-316 sigubungela ukuchongwa kwentsimi ngokubanzi.
Uthelekiso lweendleko: I-Duplex 2205 vs 316 Stainless Steel ngo-2026
Iprimiyamu iyinyani, kwaye abathengi kufuneka bazi ubungakanani bayo ngaphambi kokuba bavavanye urhwebo.
| Ifom yeMveliso | 316 / 316L | Duplex 2205 |
|---|---|---|
| Umbhobho, odibeneyo | $ 2.45-3.80 / kg | $ 5.00-7.00 / kg |
| Umbhobho, ongenamthungo | $ 2.85-4.30 / kg | $ 4.80-7.20 / kg |
| Ibha kunye nepleyiti | Iyahluka ngokobukhulu | Ngokwesiqhelo yi-1.8-2.2x 316 |
Lindela ukuba i-duplex 2205 isebenze malunga ne-1.8 ukuya kwi-2.2 ixabiso le-316L ngekhilogram ngobukhulu obuqhelekileyo bepayipi, kunye nomthamo omncinci kunye neenkcukacha ezifuna amandla ziphezulu. Amaxabiso ahamba kunye neentlawulo ezongezelelweyo ze-alloy, ngoko ke ziphathe njengezikhombisi kwaye uqinisekise kwixabiso.
Yintoni eqhuba iPremium
Izinto ezimbini zenza umsebenzi. I-Duplex 2205 ithwala i-chromium engaphezulu kunye ne-molybdenum eninzi kakhulu, zombini ezixabisa ngaphezulu kwe-iron okanye i-nickel. I-offset factor yi-nickel: i-2205 isebenzisa i-4.5 ukuya kwi-6.5% xa ithelekiswa ne-10 ukuya kwi-14% kwi-316L.
Ngenxa yokuba i-nickel yeyona nto iguquguqukayo kakhulu kwii-alloying elements, ixabiso le-2205 lizinzile ngakumbi, nokuba ixabiso layo liphezulu. Inqaku lethu malunga namaxabiso e-316 vs 304 ligubungela indlela umxholo we-nickel oqhuba ngayo amaxabiso akumgangatho kusapho lonke.
Apho iPremiyamu ifunyanwa khona
Isithuba ngekhilogram asilo ibali liphela, kwaye kwinkonzo yekloridi asilo neyona iphambili.
Umzekelo osebenzayo, kunye neengqikelelo ezichaziweyo. Thatha umgca wokupholisa we-brine kwinkonzo ye-chloride efudumeleyo. Umgca we-316L udinga ukutshintshwa malunga neenyanga ezili-18 ukuya kwezingama-24 kulo msebenzi. Umgca we-2205, osekelwe kwimida yokugqwala engentla, unokulindeleka ukuba usebenze iminyaka emininzi ngaphandle kokutshintshwa.
Misela ixabiso lokutshintsha le-316L kwizinto zokwakha kunye nexesha lokungasebenzi kwento nganye etshintshiweyo, kwaye iprimiyamu ye-2205 idla ngokufunyanwa kakuhle kumjikelo wesibini wokutshintshwa. Izinto ezipapashwe ngabathengisi kweli candelo zihlala zibika ukubuyiselwa kwemali kwiminyaka emibini ukuya kwemine kwinkonzo ye-chloride enamandla ngokwenene, nangona eli nani lixhomekeke kakhulu kwixabiso lokungasebenzi kwento, nto leyo enciphisa ixabiso lezinto kwizityalo ezininzi.
Isiphelo asikokuba i-duplex ihlala iphumelela. Kukuba ixabiso ngekhilogram liyimilinganiselo engalunganga yecandelo elinomda wokugqwala. Ixabiso ngonyaka elisetyenziswayo lilungile.
Ukuthelekisa iindlela zomsebenzi othile? Iqela lethu lingasebenza nawe ngeenombolo zomjikelo wobomi, kuquka neefom ezingenanto esizibonelelayo. Thetha neengcali zethu zezinto eziphathekayo okanye ucele ikowuteshini.
Izicelo: Ixesha lokukhetha i-2205 vs 316
I-matrix yesicelo yeyona ndlela ikhawulezayo yokufikelela kwisigqibo.
| Umsebenzi | IBanga elicetyiswayo | isizathu |
|---|---|---|
| Ukupholisa amanzi olwandle, ukususa ityuwa emanzini | Duplex 2205 | Ngaphezulu komda we-chloride we-316 |
| Iindlela zokuhamba kwamanzi kunye neenqanawa ezininzi ezingaphandle kolwandle | I-Duplex 2205 (okanye i-2507) | Ukumelana ne-Chloride SCC kunye namandla ayo |
| Ukucubungula iikhemikhali, i-acetic kunye ne-phosphoric acid | Duplex 2205 | I-PREN ephezulu, ukumelana nokugqwala okungcono ngokubanzi |
| Izicoci zepulp kunye nephepha, ii-scrubbers ze-FGD | Duplex 2205 | I-Chloride kunye nobushushu |
| Iitanki zemithwalo zeetanki zekhemikhali | Duplex 2205 | Ukugqwala kunye nokonga ubunzima |
| Izakhiwo ezinamandla aphezulu, iibhulorho | Duplex 2205 | Amandla okuvelisa anciphisa ubukhulu becandelo |
| Ukutya, ubisi, isiselo | 316L | Icocekile, ayina-chloride ininzi, kulula ukuyicoca |
| Amayeza kunye nococeko | 316L | Ukugqitywa komphezulu kunye nokucoceka kwawo |
| Inkonzo ye-Cryogenic | 316L | Ii-embrittles ezingama-2205 ngaphantsi kwe--50°C |
| Inkonzo engaphezulu kwama-300°C | 316L okanye 316H | Imida yesigaba seSigma 2205 |
| Izixhobo zolwandle zokwakha nezolwandle ezingaphezulu kwamanzi | 316L | Ukuxhathisa okwaneleyo ngexabiso eliphantsi |
Ukunyuka Kwamanqanaba Amathathu
Cinga ngenkonzo yekloride njengeleli enemigangatho emithathu. I-316L igubungela umsebenzi ococekileyo, opholileyo, nophantsi kwekloride. I-Duplex 2205 igubungela uyilo lwekloride efudumeleyo, amanzi olwandle, kunye noyilo oluqhutywa ngamandla ngaphakathi kwefestile yayo yobushushu. I-Super duplex 2507 igubungela ikloride ephezulu kumaqondo obushushu aphezulu, apho kufuneka i-PREN engaphezulu kwama-40.
Inqaku lethu malunga ne-2205 vs 2507 duplex ligubungela irung ephezulu, kwaye i-lean duplex vs 316 igubungela ukhetho olungabizi kakhulu phakathi kwerung ezimbini zokuqala.
Ngokukodwa malunga nomtshintshi wobushushu kunye nemisebenzi yamanzi olwandle, inqaku lethu malunga nenkonzo yomtshintshi wobushushu we-duplex 2205 lihamba ngokukhetha iityhubhu.
Xa i-316 iselukhetho olufanelekileyo
Uthelekiso oluphikisana kuphela nenqanaba leprimiyamu luluvo lokuthengisa, kungekhona ingcebiso yobunjineli. I-Duplex 2205 yimpendulo engalunganga kwiimeko ezininzi eziqhelekileyo.
Inkonzo yobushushu obuphezulu. Ngaphezulu kwama-300°C, i-2205 ayifumaneki. Sebenzisa i-316 okanye olunye uhlobo lwe-austenitic.
Inkonzo ye-cryogenic. Ngaphantsi kwe--50°C, isigaba se-ferrite kwi-2205 siba buthathaka. I-316 igcina ukuqina kwayo ukuya kwi--196°C.
Ukwakheka okuntsonkothileyo. Ukwandiswa okuphantsi kwe-2205 kwenza ukutsalwa okunzulu, ukugoba okuqinileyo, kunye nokucinezela okuntsonkothileyo kusebenze nzima kwaye kubize kakhulu. Ukuba inxalenye yenziwe kakhulu, i-316 idla ngokuphumelela kwixabiso lilonke.
Ucoceko, ubanda, kwaye une-chloride ephantsi. Ukuba okusingqongileyo akuyi kuhlasela i-316, i-duplex premium ayithengi nto. Ukuyihlawula yindleko, hayi umda wokhuseleko.
Uvakalelo lweMagnetic. Ii-flowmeter zeMagnetic, ukwahlulwa kweMagnetic, kunye nee-assembly ezinovakalelo lweMagnetic zinokuthintela i-duplex.
Ukufumaneka. Ii-316 kunye ne-316L zigcinwe ngobukhulu, ukugqitywa, kunye neefom ezingaphezulu kune-2205. Ixesha lokufumana i-lead kunye nobungakanani obuncinci be-odolo zezona ndlela zokukhetha.
Impazamo yeenkcukacha ezibiza kakhulu kolu thelekiso ihamba kuzo zombini iindlela. Ukucacisa i-316 kwinkonzo ye-chloride efudumeleyo kuvelisa ukungaphumeleli. Ukuchaza i-2205 kwinkonzo ecocekileyo nepholileyo kuvelisa ii-invoyisi ezingenanto zibonakalayo. Isikhokelo sethu se-316 stainless steel sigubungela icala le-austenitic ngokupheleleyo, kwaye ukuthelekisa i-304 vs 316 kugubungela isigqibo sebanga elinye ngaphantsi kwale.
Imibuzo ebuzwa qho
Ngaba i-duplex 2205 ingcono kune-316 stainless steel?
I-2205 ingcono apho iikloridi, amanzi olwandle, okanye amandla aphezulu ziqhuba uyilo, kuba inamandla okuvelisa aphindwe kabini kwaye i-PREN imalunga nama-35 xa ithelekiswa nama-25. I-316 ingcono ngaphezu kwama-300°C, ngaphantsi kwe--50°C, kwiindawo ezakhiwe kakhulu, nakwinkonzo ecocekileyo, ebandayo apho iprimiyamu ye-duplex ingathengi nto.
Kutheni i-duplex 2205 inamandla kune-316?
I-2205 inesakhiwo esincinci esinezigaba ezibini se-austenite emalunga ne-50% kunye ne-ferrite emalunga ne-50%. Isigaba se-ferrite sithwala umthwalo kwaye sithintela ukuhamba kweplastiki kwi-austenite, ngoko ke i-2205 ifikelela kwisivuno esincinci se-450 MPa xa ithelekiswa ne-170 MPa kwi-316L. Nangona kunjalo, i-modulus ye-elastic iphantse ifane, ngoko ke ukuqina kwayo akuphucuki.
Yintoni iPREN ye-duplex 2205 vs 316?
Ukusebenzisa ifomula ethi PREN = %Cr + 3.3 × %Mo + 16 × %N, i-duplex 2205 ibala ukuya kuthi ga kwi-35 ngelixa i-316L ibala ukuya kuthi ga kwi-25. Loo msantsa we-ten-point uchaza umahluko ekusebenzeni kwe-pitting, crevice, kunye ne-stress corrosion cracking.
Ngaba intsimbi engagqwaliyo engama-316 ingasetyenziswa emanzini olwandle?
Ngokubanzi hayi, kwinkonzo emanzi okanye efakwe emanzini. Phantsi kwe-NORSOK M-001, i-316L ayifanelekanga kumanzi olwandle, kuba ubushushu bayo obubalulekileyo buwela ngaphantsi kwe-0°C kwaye isengozini yokuqhekeka yi-chloride pitting kunye nokuqhekeka koxinzelelo. I-Duplex 2205 yinto eqalayo emanzini olwandle.
Ithini imida yobushushu be-duplex 2205?
Malunga nama-50°C ukuya kuma-300°C, kunye nomda woyilo lwe-ASME Section II Part D obekwe kwi-315°C (600°F). Ngaphezulu kolo luhlu, isigaba se-sigma senziwa phakathi kwama-550°C kunye nama-1000°C, kwaye ukuvezwa ixesha elide phakathi kwama-300°C kunye nama-525°C kubangela ukubhitya kwe-475°C.
Ngaba i-duplex 2205 inamandla ombane?
Ewe. Isigaba se-ferrite senza i-duplex 2205 magnetic, kunye nokungena okuqhelekileyo phakathi kwe-1.5 kunye ne-5. I-Annealed 316 ngokusisiseko ayisebenzisi magnetic, nangona ukusebenza ngokubandayo kuyenza ibe magnetic ebuthathaka nge-strain-induced martensite.
Ngaba i-duplex 2205 inokudityaniswa kwi-316?
Ewe. Sebenzisa isizalisi se-ER2209 kwijoyinti eyahlukileyo. I-ER2209 ixutywe kakhulu ne-nickel eyongezelelweyo ukuze ihlawulele ilahleko ye-nitrogen, egcina idiphozithi ye-weld ikwibhalansi yesigaba esichanekileyo. Ungaze usebenzise i-ER308L okanye i-ER316L kwicala le-duplex lejoyinti.
Yeyiphi intsimbi yokuzalisa esetyenziselwa i-duplex 2205?
I-ER2209. Ithwala i-nickel engaphezulu nge-2 ukuya kwi-4% kunesinyithi esisisiseko ukuze i-weld ikwazi ukulungelelanisa umxube wesigaba ekujoliswe kuso. Izizalisi ze-Austenitic ezifana ne-ER308L, i-ER316L, kunye ne-ER309L akufuneki zisetyenziswe, kuba zivelisa isinyithi se-weld esingaphezulu kwe-80% ye-ferritic enokuqhekeka.
Ingakanani i-duplex 2205 enokuba ncinci kune-316 ngesilinganiso esifanayo soxinzelelo?
Ngokwesiqhelo incinci ngama-30 ukuya kuma-50%, kuba uxinzelelo oluvumelekileyo luyalinganiswa ngamandla okuvelisa. Ityala elibonisayo: yi-8.0 mm kwi-316L xa ithelekiswa ne-5.0 mm kwi-2205 xa uxinzelelo loyilo lulingana. Oku kunciphisa ubunzima, umthamo we-weld, kunye neemfuno zenkxaso, kwaye kunciphisa kakhulu umsantsa weendleko.
Ingaba i-2205 ibiza kakhulu kune-316?
Lindela malunga ne-1.8 ukuya kwi-2.2 yexabiso ngekhilogram nganye ye-2205 ngobukhulu obuqhelekileyo beepayipi, kunye noluhlu lwango-2026 olumalunga ne -4.80 ukuya kwi -4.80 ukuya kwi -7.20/kg xa kuthelekiswa ne -2.20 ukuya kwi -2.20 ukuya kwi-4.30/kg kwi-316L. Kwinkonzo ye-chloride, ukonga ubukhulu bodonga kunye neendleko zokutshintsha ezithintelweyo zihlala zibuyisela loo ntlawulo kwiminyaka embalwa.
isiphelo
I-Duplex 2205 kunye ne-316 stainless steel zisombulula iingxaki ezahlukeneyo. I-Duplex 2205 izisa amandla emveliso aphindwe kabini, i-PREN ekufutshane ne-35 xa ithelekiswa ne-25, kunye nokumelana nokuqhekeka komhlwa okungaphezulu kwe-100°C. Ngokutshintshiselana, ixabisa ngaphezulu nge-1.8 ukuya kwi-2.2 ngokuphindwe ngekhilogram nganye kwaye isebenza kuphela phakathi kwe--50°C kunye ne-300°C. Ikwafuna uqeqesho lokuwelda olungazange lusebenze kwi-316, ukuqala nge-ER2209 filler kwaye akukho nyango lobushushu emva kokuwelda.
Isigqibo sixhomekeke kwimibuzo emithathu. Ingaba i-service bearing kwaye ifudumele? Ngaba amandla aqhuba uyilo? Ngaba i-service bearing iphakathi kwe--50°C kunye ne-300°C?
Iimpendulo ezintathu ezithi ewe zikhomba kwi-duplex 2205. Naziphi na iimpendulo ezithi akukho mpendulo zibhekisa kwi-316 okanye kwi-316L.
Yiqonde loo nto, kwaye isigqibo se-duplex 2205 vs 316 stainless steel asisasebenzi. Iba yinkcazo enamanani ngasemva kwayo, kwaye ibe yinto ehlala ixesha elide njengoko uyilo belucwangcisiwe.
Nokuba ufuna ipleyiti ye-duplex 2205, ishiti, okanye ipayipi, okanye i-316L kwizicelo apho amanqanaba e-austenitic achanekileyo, iqela lethu linokukunceda ukuba uyicacise kwaye uyifumane. Thumela imiqathango yenkonzo yakho kunye nobukhulu bayo, kwaye siya kubuya nengcebiso yamanqanaba, ububanzi besatifikethi se-mill, kunye nesicatshulwa.
