Ngenxa yokuqina kwazo, ukumelana nokugqwala, kunye nexabiso lobuhle, iipleyiti zentsimbi engagqwaliyo ziyinxalenye ebalulekileyo yamashishini ahlukeneyo. Ngenxa yoko, eli nqaku liza kujonga kwii-engile ezintlanu eziphezulu zeepleyiti zentsimbi engagqwaliyo ezisetyenziswa rhoqo ngabavelisi kunye nezakhiwo ezinde. Nganye yahlukile kwiingenelo kwaye ngaloo ndlela inokuba luncedo kwimisebenzi ekhethiweyo kunye neendawo ezikhethiweyo. Ngoko ke abo bantu baza kuthenga ipleyiti baya kufunda umahluko ongentla, ubavumele ukuba bakhethe ipleyiti yentsimbi engagqwaliyo efanelekileyo kumsebenzi wabo kwaye baphucule ukusebenza kakuhle kunye nokuqina komsebenzi wabo.
Zeziphi Iindidi ezahlukeneyo zeePlayiti zeNtsimbi?
Ukuhlelwa kweePlati zeNsimbi
Amabakala ensimbi engenasici ziinkqubo zokuhlela ezivumela ukuchongwa ngokuchanekileyo kweenguqu ezininzi kwintsimbi engenasici ngokubunjwa kwazo, iipropati kunye nokuchasana nokubola. Eyona nkqubo isetyenziswa kakhulu yokuhlela yile yaveliswa yi-American Iron and Steel Institute (AISI), kwaye idibanisa intsimbi engatyiwayo ngokwemigangatho efana ne-austenitic, ferritic, martensitic, kunye ne-duplex, phakathi kwezinye. Kubalulekile ukuqaphela ukuba usapho ngalunye luneempawu ezikhethekileyo: iintsimbi ze-austenitic zezona zidalekayo ezinokumelana nokugqwala okugqwesileyo, iintsimbi ze-ferritic zilungele ukunxitywa kunye nokumelana nemagnethi, kwaye iintsimbi ze-martensitic zinamandla aphezulu kunye nokuqina. Ngokwahlukileyo, i-duplex steels kuthiwa izama ukudibanisa iimpawu ze-austenitic kunye ne-ferritics. La mabakala abalulekile xa ukhetha ipleyiti ethile yensimbi kwimisebenzi ethile yezoshishino, njengoko ukuzinikela okunjalo kuya kunceda ukuqinisekisa ukuba akukho kuphazamiseka ekusebenzeni. Kunoko, intsimbi yenza njengoko kufanelekile.
Iindidi zeStainless Steel ezisetyenziswa kakhulu kwimizi-mveliso
Iindidi ezininzi zeepleyiti zensimbi ezingenasici zisetyenziswa rhoqo kumasebe ahlukeneyo ngenxa yezinto ezifanelekileyo kunye nokusetyenziswa kwazo. Kunikwe ngezantsi ezona ntlobo ziqhelekileyo ngedatha yazo yobugcisa:
1. Uhlobo lwama-304 (i-Austenitic Clad Steel)
- Ukuqulunqwa: I-18% yeChromium kunye ne-8% yeNickel
- Iimpawu: Ukwakheka okuhle, ukuwelda, kunye nokuchasana okuphezulu kakhulu kwiCorrosion.
- Ukuhlelwa: Izixhobo zasekhitshini, izitya zokutya kunye neekhemikhali, ukulungiswa kokutya.
- Ulungelelaniso: Ukusebenziseka kwayo ngokulula kwindawo ephantsi-okanye ephezulu yokufuma kunye nongcoliseko oluphezulu ngenxa yokuguquguquka kwayo kunye nokuchasana ne-oxidation.
2. Uhlobo 316 (iAustenitic Stainless Steel)
- Ukwakhiwa: 16 - 18% Chrom, 10-14% Nickel, 2% Molybdenum
- Iimpawu: Ukuxhathisa okuphezulu kwi-corrosion kune-Type 302 ikakhulu ngenxa yekloridi
- Ukusetyenziswa: Izicelo zaselwandle, amashishini axuba amayeza, kunye nokulungiswa kweekhemikhali.
- Ulungelelwaniso: I-Molybdenum ifakwe kwiintlobo ezininzi ze-alloys ukuqinisekisa ukusetyenziswa kwazo kwiimeko ezinzima, njengoko kwandisa ukuchasana kwazo kwi-pitting.
3. Uhlobo lwama-430 (iNtsimbi yeFerritic eStainless)
- Ukwakhiwa: 17 ekhulwini Chromium
- Iimpawu: Iqondo elifanelekileyo lokumelana nokunxiba kunye nenqanaba eliphakathi lokuchasa ukubola
- Usetyenziso: Izinto zemoto, izixhobo zasekhitshini, kunye nezixhobo zombane.
- Isizathu: Esi sinokusetyenziswa phantsi kweemeko ezinobungozi obuncinci ngenxa yokwakheka kwayo okungabizi kakhulu kunye nokuxhathisa kwi-oxidation.
4. Uhlobo 410 (intsimbi engatyiwa yiMartensitic)
- Ukwakhiwa: 11.5% Chromium
- Iimpawu: Amandla aphezulu kunye nobunzima; nangona kunjalo, iimpawu zokuxhathisa ukubola zingaphantsi kunesiqhelo.
- Usetyenziso: Iimela zekhitshi, iinxalenye zeevalvu, kunye neenjini zedizili
- Isizathu: Iipropathi zayo zokulola ziluncedo ekusikeni iindawo, kodwa ngokungenakuthintelwa ziye zidle umhlwa.
5. Uhlobo 2205 (Duplex Stainless Steel)
- Ukubunjwa: 22% Chromium, 5% Nickel, 3% Molybdenum
- Iimpawu: Ineempawu zentsimbi ye-austenitic kunye ne-ferritic
- Ukusetyenziswa: Ioyile kunye nezixhobo zegesi, kwintsimi yaseMarine kunye neenqanawa zoxinzelelo
- Isizathu: Amandla aphezulu kunye nokuchasana noxinzelelo lwe-corrosion cracking iyenza ilungele izicelo eziphantsi koxinzelelo oluphezulu.
Ukuqhelana nezi ntlobo zemigangatho kunye neempawu zazo kuya kunceda amashishini ahlukeneyo ekwenzeni ukhetho oluchanekileyo xa usebenzisa ipleyiti ethile yensimbi engenasici ukwenzela ukusetyenziswa kwayo.
Ulukhetha njani uhlobo oluLungileyo lwepleyiti yentsimbi engatyiwayo
Omnye ukumkani wogxininiso uxhasa ukukhetha ukucwangciswa okuthile kwepleyiti yensimbi engenasici ekufuneka umntu ayiqwalasele xa kucetywa ukusetyenziswa okuthile. Eyokuqala kumaziko anjalo kwimeko yenkonzo yeplate yensimbi. Ngokomzekelo, kule meko, i-Wickes Corrosion-resistant steels i-austenitic ye-Type 316 ikhethwa kwiimeko ezinobundlongondlongo kakhulu kunye ne-corrosion. Iprojekthi ibonisa ukuba kunokwenzeka ukuba kuhlanganiswe izinto ezinomlinganiselo ofanelekileyo wokumelana nokubola; ngoko ke, imathiriyeli kufuneka ibe yintsimbi ephindwe kabini yodidi lwe-2205, olulungele usetyenziso oluninzi kwiimeko zoxinzelelo oluphezulu. Ndikwaqwalasela neendleko; umzekelo, iintlobo ze-ferritic ezifana ne-Type 430 kwizicelo ezingenayo i-corrosion kulula kakhulu ukuyithwala kuhlahlo lwabiwo-mali. Ekugqibeleni, ndisaqwalasela uhlobo lomsebenzi owenziwayo, kuquka ubushushu, ukulayishwa, kunye neendleko ezibandakanyekileyo kulo msebenzi.
Zeziphi iimpawu ze-304 yentsimbi engatyiwayo?
Ukunyangwa kweNgxowa-mali ye-304 yeNsimbi eNgatyiwayo
Ngaphandle kweempawu ezinkulu ze-304 yensimbi engenasici, amandla ayo okumelana nokugqwala aphezulu abonwa kakhulu, okwenza ukuba afaneleke kwizicelo ezininzi. Kwindlela yam yokusebenza, ndifumene i-304 yentsimbi engatyiwayo yokumelana nezinto ezininzi ezonakalisayo, kubandakanya uninzi lokusetyenziswa kweekhemikhali kunye ne-inorganic. Oku kungenxa yomxholo we-nickel yasendle kwiklasi ye-304, ebanika amathuba okuxhathisa i-oxidation ngcono. Ikwasebenza kakuhle phantsi kweemeko ze-atmospheric kwaye ikwazi ukumelana nokudibana namanzi ngaphandle kokuhlwa okukhulu. Nangona kunjalo, ndiqaphele ukuba ibakala lensimbi engama-304 alinakubekwa kwindawo ephezulu kakhulu yekloridi njengoko oku kuya kubangela ukubola kombhobho, ngaloo ndlela kugqwetheke kakhulu. Yingakho xa ndijonga i-304 izakhi zensimbi ezingenasici, ndihlala ndicinga malunga nokusingqongileyo apho baya kuboniswa khona ukukhusela ukuguqulwa kwesakhiwo sabo ixesha elide.
Ukusetyenziswa kweepleyiti zentsimbi ezingama-304
Kuzo zonke iipleyiti zensimbi ezingenasici, i-304 yeyona isebenzisekayo kwaye isebenzayo kuzo zonke. Amaxesha amaninzi, afumana ukusetyenziswa kumacandelo okutya nesiselo ngaphakathi kwezixhobo ezifana namatanki, imibhobho, kunye nezinye iiyunithi zokulungisa kuba zicocekile kwaye azinarusi. Ngokuqhelekileyo ndiyalela ukuba i-304 insimbi engenasici isetyenziswe kwizakhiwo, ngokukodwa kwii-railings kunye ne-facades, njengoko ikhangeleka kakhulu kwaye ihlala ihlala njalo. Ezi pleyiti zintle kubavelisi beemoto kunye namalungu omatshini kuba zinokubunjwa ngokulula zibe ziimo ezintsonkothileyo kwaye zidityaniswe kwiindawo ezahlukeneyo. Ngokubanzi, iipleyiti zensimbi ezingenasici ezingama-304 zixhaphakile kumashishini amaninzi ngenxa yokuba ziguquguquka.
Iinkqubo ze-302 zensimbi ezingenasici kunye nokusebenza.
Ekuqondeni kwam, enye yeenzuzo ze-304 insimbi engenasici kukulula kwayo ukuwelda. Kuyongayo kwimisebenzi emininzi yolwakhiwo kuba uninzi lweenkqubo zokuwelda, ezifana ne-TIG, i-MIG, okanye i-welding stick, ingasetyenziswa. Andifumani ukushisa kwangaphambili xa ndichaza umsebenzi kwabo ndisebenza nabo. Kodwa kunjalo, ndiqinisekisa ukuba isiseko sesinyithi sikhululekile kukungcola ukuphepha naziphi na iingxaki ze-welding. Ngakolunye uhlangothi, ndiye ndaqaphela ukuba i-304 ilula kakhulu ukuyidibanisa, kodwa ingqalelo ekhethekileyo kufuneka ihlawulwe kwiintsimbi zokugcwalisa ezisetyenzisiweyo, njenge-ER 308L, enceda ukuphepha ukubola. Emva kwe-welding, unyango olongezelelweyo lobushushu, kubandakanywa kodwa lungaphelelanga ekufudumeni, lunokuphucula ngakumbi iimpawu zalo ukuba luyimfuneko. Olu qwalaselo luqinisekisa ukuba i-ply yokuvelisa ecocekileyo eyenziwe nge-304 yensimbi engenasici iqinisekisa ukukhululeka kobugcisa kunye nokuthembeka kwiindawo ezininzi.
Yintoni eyenza i-316 iStainless Steel yahluke kwi-304?
Ukuthelekiswa koKunyangwa kwe-Corrosion: 316 vs. 304
Ngelixa ndiphanda ezona zixhobo zibalaseleyo, ndiye ndaphawula ukuba umahluko kwi-corrosion resistance phakathi kwe-316 kunye ne-304 yensimbi engenasici inokubangelwa ikakhulu kwi-alloys. I-316 iqulethe umxholo ophezulu we-molybdenum, oko kukuthi, ngokomyinge, i-2-3 ekhulwini. Oku kuyinika inzuzo eyongeziweyo yokulwa imingxuma kunye nokuhlwa kwemingxuma, okwenzeka kwiindawo ezinekloridi etyebileyo njengemimandla eselunxwemeni kunye neendawo apho imichiza ilungiswa. Amaphepha angama-304 ensimbi akwiklasi yawo kunye ne-0.08% yekhabhoni kunye ne-18% ye-chromium, ngelixa zilungile ngokuchasene nokubola kodwa kuphela kumanqanaba aphakathi, ngokuchasene noko i-316 yensimbi inikezela.
Ukubeka amanani athile kule nkcazo, ndiye ndaqaphela ukuba ii-316 zentsimbi zinokumelana nokugqwesa okungcono kwizisombululo ze-saline kunamashiti ensimbi angama-304. Itekhnoloji iqinisekisa le ngxelo njenge:
- I-Pitting Resistance Equivalent Number (PREN): I-PREN ye-316 imalunga ne-27 - 29, apho 'njengoko' i-304 imalunga ne-19 - 20. Lo mlinganiso ubonisa umngcipheko ophantsi wokuvezwa kwi-ion ye-chloride kwi-316.
- I-Oxidation Resistance: I-316 inokufikelela kwi-870 degrees C (1600 degrees F) ixesha elifutshane kunye ne-925 degrees C (1700 degrees F) ixesha elide kwinkonzo ephazamisayo, kodwa i-304 inokusebenza kuphela malunga ne-800 degrees C (1470 degrees F) kwimisebenzi eqhubekayo.
Ngenxa yezi zizathu, ndikhetha i-316 insimbi engenasici nakwiimeko ezinzima kakhulu, njengoko ilawula ukubola.
Ukusetyenziswa kwe-316 yensimbi engenasici kumacandelo ahlukeneyo
Ukususela ekubonweni kwam, kukho iimeko ezininzi apho i-316 insimbi engenasici isetyenziswe ngenxa yobume bezicelo, ngokukodwa kwizicelo zebakala lokutya. Kushishino lwaselwandle, ikwasetyenziselwa ukwenza izixhobo zokufakelwa izikhephe kunye nezixhobo zentsimbi zaselwandle, ezihlala ziphantsi kokonakala ngamanzi olwandle adityaniswe nezinyithi zomgangatho ophantsi. Icandelo lokulungisa imichiza likwathanda le ntsimbi, ikhuthaza ukusetyenziswa kwayo kwiivalvu, iimpompo, kunye namatanki okugcina njengoko iphila kwindawo enokhuphiswano oluphezulu ezaliswe ziikhemikhali ezikhawulezayo. Ngaphaya koko, ndiyibonile yamkelwa ngokubonakalayo kumacandelo okutya kunye namayeza, afuna imigangatho ephezulu yococeko. Iimpawu ezinganyangekiyo kwi-corrosion ye-316 yemveliso yensimbi engenasici iqinisekisa wonke umsebenzisi ukuba iimveliso ziya kukhuseleka ukuba zisetyenziswe. Ukuqukumbela, ukusetyenziswa kwe-multidimensional kudityaniswe namandla e-316 yentsimbi engatyiwayo iseyintsimbi ekhethwayo kwizicelo ezininzi apho izinto ezingonakalisi zibala.
Ukumisela i-Alloy Composition ye-316 Steel engenaStainless
Isakhiwo se-alloy ye-316 yensimbi engenasici ichaphazela ngokuthe ngqo ukusebenza kwayo kunye neempawu zokumelana. Mna ke, ndigxininisa kwizithako eziphambili, eziqulethe malunga ne-16-18% yechromium, i-10-14% ye-nickel, kunye ne-2-3% ye-molybdenum. Ukubandakanywa kwe-molybdenum kubalulekile kuba kwandisa i-alloy pitting kunye ne-crevice corrosion resistance, iyenze isebenze kwiindawo zekloride. Ukongeza, i-Cr inegalelo kumandla omatshini kunye nokumelana ne-oxidation, ngelixa i-Ni inyusa ukuqina kwe-alloy kwamanye amaqondo obushushu. Ngokudibeneyo, ezi zinto zenza into eyomeleleyo enokumelana neemeko ezinzima, ezithatha ukuba sisebenzise rhoqo le nto kumashishini ahlukeneyo.
Ziziphi iintsimbi zeMartensitic kunye neFerritic?
Iimpawu zeMartensitic Stainless Steel
Intsimbi ye-Martensitic idityaniswa nezinto ezinje ngokuqina okuphezulu kunye nokuqina, okuthetha ukuba ukusetyenziswa kwayo kwiindawo ezahlukeneyo kubaluleke kakhulu ekwenzeni izixhobo kunye namacandelo anokumelana okuphezulu nokunxiba. Ndiyaqonda ukuba olu hlobo lwensimbi lune-nickel ephantsi kunye nomxholo ophezulu wekhabhoni, inzuzo ngaphezu kwamabakala e-austenitic. Ngokuqhelekileyo, amabanga e-martensitic ensimbi engenasici axhasa inkqubo yonyango lobushushu ukukhulisa ubulukhuni babo kunye namandla okuqina kumanqanaba ahlukeneyo afanelekileyo kwizicelo ezahlukeneyo. Ukuqhubela phambili, nangona ulawulo lwe-corrosion lwamkelekile, alukho ngcono kunamabakala e-Austenite, ngakumbi kwiimeko ezingathandekiyo. Ngenxa yoko, kubalulekile ukwazi imiqobo yesi sixhobo ukukhetha eyona ilungileyo ngeenjongo ezithile zoshishino.
Usetyenziso kunye nokuSetyenziswa kwe-Ferritic Stainless Steel
Ukusukela oko yafunyaniswayo, i-ferritic stainless steel isetyenzisiwe kumashishini amaninzi ngenxa yokungabizi kwayo, iimpawu ezintle zokuchasa ukubola, kunye nobuchule obuphezulu bokwenza. Ngokuqhelekileyo isetyenziswe kumashishini eemoto ukuvelisa iinkqubo zokukhupha kunye namacandelo esakhiwo, apho ubushushu kunye nokuxhatshazwa kwe-oxidation kufuneka kwenziwe eluphahleni. Ngaphezu koko, iintsimbi ezingenazintsimbi ze-ferritic zikwasetyenziselwa ukwenza zonke iintlobo zeeseti zokusika okanye iiprofayili zokuhombisa kunye nezinye izixhobo zombane, kubandakanya ikhitshi kunye nezixhobo zemizi-mveliso ezinokumelana nokubola okuphakathi. Amandla ayo kunye nobude obunyamezelekayo - ilungele ukwenziwa kunye nezicelo ze-welding, yayikwayinto enkulu. Ngaphezu koko, intsimbi ye-ferritic engatyiwayo ikwanemagnethi kwaye, ke ngoko, ingasetyenziswa kwizicelo ezinombane.
Ukuthelekiswa kweeNdidi zeAkhawunti zeMartensitic kunye neFerritic
Ukuhamba ngeembonakalo ze-martensitic kunye ne-ferritic stainless steels, ndiye ndaqaphela ukuba ezi nazo zinezakhiwo ezifanelekileyo kwizicelo ezithile. Kwaphawulwa ukuba i-martensitic steel stainless ine-carbon contents phakathi kwe-0.1% kunye ne-1.2%. Eli candelo lentsimbi ye-Martensitic inenzuzo yokuba lukhuni ngonyango lobushushu. Ke ngoko, amandla okuqina adla ngokugqitha kwi-1400 MPa afunyenwe kwaye asetyenziswe ngcono kwizicelo ezinjengeemela kunye nezixhobo ezifuna ukuxhathisa ukunxiba okuphezulu. Nangona kunjalo, amandla okuqina kula mabanga ezinto eziphathekayo aphantsi kwaye ubukhulu becala aqala malunga nama-400 - 600 MPa tensile. Nangona kunjalo, i-ductility yabo ephezulu kunye nokwakheka kukhuthaza ukusetyenziswa kuzo zombini iimoto kunye nezicelo zasekhitshini.
Ukongezelela, ukukwazi ukumelana nokuthotywa kolunye uthelekiso olunokwenziwa. Kwafunyaniswa ukuba nangona amabanga e-martensitic entsimbi engenastainless esebenza ngcono kwindawo enikiweyo kunezintsimbi ezingaxutywanga, azisebenzi kakuhle kwi-pitting okanye kwi-crevice corrosion xa kuthelekiswa ne-frozen EN grade ferritic. Eyona nto iphambili kukuba i-martensitic stainless steels isetyenziswe kakuhle apho ukuxhathisa ukunxiba kuyinkxalabo, kwaye i-ferritic stainless steels isetyenziswe kakuhle apho kufuneka khona amandla. Ukumelana ne-corrosion ngokwaneleyo kunye ne-welding engcono iyafuneka.
Ingaba iDuplex Steel iluphucula njani umsebenzi?
Izinto ezilungileyo zokusebenzisa iipleyiti zensimbi ezingenasici ze-Duplex
Ngexesha lezifundo zam, ndiye ndafumana ulwazi malunga neepleyiti zensimbi ezingenasici ezimbini ezivakala zinomdla kakhulu, kuba ezi pleyiti zineempawu ezithile eziluncedo ngeendlela ezininzi. Enye yeenzuzo zabo ezibalulekileyo, ezibalaseleyo, ngamandla abo aphezulu, aphantse aphindwe kabini kuneyentsimbi eqhelekileyo ye-austenitic. Oku kukwathethelela amacandelo amancinci, akhokelela kwindleko ephantsi kunye nobunzima bokwakhiwa okugqityiweyo. Ngaphandle kwezi, iintsimbi ezingenazintsimbi eziphindwe kabini zikwabonisa ukophuka koxinzelelo oluphezulu lokuqhekeka kunye nokuxhathisa kwemigodi, okubenza ukuba balungele imeko engqongileyo enjengamanzi olwandle kunye nezixhobo zenkqubo yemichiza. Ukongezelela, kulula ukuwenza ngenxa yokuqhubela phambili komsebenzi we-welding. Lilonke, ukusebenza kakuhle kunye nobomi bezicelo ezininzi kunokuphuculwa kusetyenziswa iipleyiti zensimbi ezingenasici.
Usetyenziso kwiiNdawo zoBume boMmandla oPhezulu
Njengoko ndiphonononga, iintsimbi ezingenazintsimbi eziphindwe kabini zineengenelo ezithile kwizicelo ezinamandla kakhulu, kubandakanya neoyile engaselunxwemeni kunye namaqonga erhasi, izityalo zenkqubo yemichiza, kunye nezakhiwo zaselwandle. Izicelo ezinjalo zifuna izinto ezinokuthatha imithwalo ephezulu kwaye zixhathise iimeko ezinqabileyo. Umzekelo, ngenxa yokunyuka kwemfuno ye-Duplex Stainless Steel, i-98% yokusetyenziswa kwangoku ikwiicompressors, iipayipi, iinqanawa zoxinzelelo, kunye nezinye iipakethi zezixhobo. Ukongezelela, kukho ukwamkelwa okukhulayo kwezi ngxube zokwenza i-heater exchangers kunye neetanki zokugcina ngenxa yeempawu zabo, ezivumela ukusebenza phantsi kweemeko ezahlukeneyo zokushisa kunye noxinzelelo. Lilonke, i-duplex steel stainless yimpendulo esebenzayo yokujongana neemfuno zokusebenza kwamashishini ahlukeneyo.
Ukunyangwa kokuNgquba kweNtsimbi yeDuplex
Njengoko ndiyiqonda, i-Duplex steels stainless ayithandeki kangako ekudlekeni ngenxa ye-microstructures yazo equka zombini i-austenite kunye ne-ferrite. Umzekelo, uyilo olunezigaba ezimbini kumanzi olwandle lunceda ukunqanda ukutyhoboza kunye ne-crevice corrosion synergistically kwindawo ene-chloride etyebileyo. Uhlaselo lwe-Intergranular kwi-duplex yensimbi engenasici ngenxa yobushushu obuphezulu bubonakale buxhathisa kakhulu, umngeni oqhelekileyo kwintsimbi eqhelekileyo engenasici. Ukusuka kwiiwebhusayithi ezininzi eziphezulu, kuyacaca ukuba i-chromium kunye ne-molybdenum ukubunjwa kwe-alloy kuphucula ukuxhathisa ukubola kwaye ngoko ke ifanelekile kwinani elikhulu lemisebenzi kwimichiza yokucubungula imichiza kunye ne-oyile kunye negesi yegesi, apho kukho izinto ezimbi malunga nokubola. Ndicinga ukuba idimension yangaphandle elungileyo, kunye nesiqulatho sangaphakathi kunye nokunxiba okuqhelekileyo kunye nokukrazula imiba echasayo, yenza i-duplex steel stainless iphakame ngaphezu kwesiqhelo ngokweempawu zemathiriyeli zokuqalwa kweeprojekthi ezifuna ukuxhathisa umhlwa.
Yintoni imvula eyenza lukhuni iintsimbi ezingatyiwayo?
Ichaza iNkqubo yoKuqiniswa kwemvula
Njengoko ndingena kulolu hlobo lwensimbi engenasici, ndiqhuba ukuqina kwemvula, okubandakanya uchungechunge lwamanyathelo adla ngokubizwa ngokuba unyango olushushu olujoliswe ekwandiseni amandla e-alloy. Ngokuqhelekileyo iqala ngokufudumeza intsimbi kwiqondo lobushushu elithile eliphezulu ukunyibilikisa ezinye izinto alloying uze ucime ukuphumeza isisombululo supersaturated eqinileyo nazo zonke ezi zinto zibanjiweyo. Inqanaba lokugqibela elibalulekileyo liziswa kwiqondo lobushushu elisezantsi, elinganyibilikiyo imvula kodwa livumela ukuba lenze kwintsimbi emva kwenyathelo lonyango lobushushu. Umlinganiselo omncinci onjalo ubangela ukusabalalisa kwe-sediments, okuthintela ukunyakaza kwe-dislocation kwi-lattice yensimbi, evumela ukwanda okungenakuphepheka kobunzima kunye namandla ezinto eziphathekayo. Ndifumanise ukuba indlela enjalo inomtsalane ekusebenzeni, ngakumbi kwicandelo lobunjineli beenqwelomoya kunye neenqwelomoya, ezifuna imathiriyeli ezinomlinganiselo ophezulu wokuqina kobunzima. Ukuqina kwemvula yindlela enye evumela ukuba insimbi engenasici iqonde amandla ayo apheleleyo kwiimpawu zayo ezixabisekileyo.
Usetyenziso lweNgxobhozo yoQinisa iipleyiti zeNtsimbi eZimbi
Kukho iinyani ezithile malunga nemvula eyenza lukhuni iipleyiti zentsimbi endiye ndadibana nazo kuphando oluthathu oluphezulu lukaGoogle ngesihloko, endicinga ukuba kufanelekile ukusisebenzisa. Ukhuseleko olwaneleyo olunceda ukuthwala iinkxalabo kubunjineli bezakhiwo ze-aerospace kukutshintshwa kwezixhobo zetsimbi ezikhaphukhaphu ngeepleyiti zentsimbi. Iipolymers zeklasi ye-17-4 PH zinika imizekelo egqibeleleyo, efumaneka kakhulu i-undercarriage kunye ne-fasteners kwimboni ye-aerospace apho amandla aphezulu aphezulu angaphezulu kwe-1300 MPa.
Ezo zinto zikwasetyenziswa ngokubanzi kwishishini le-oyile kunye negesi ukutywina kunye nezixhobo zevalvu, iimpompo ze-downhole, kunye nezinye izinto ezininzi ezifuna ukubola kunye nokumelana noxinzelelo oluphezulu. Amandla esivuno, esikuluhlu ngokubanzi malunga ne-MEGAPAScals ELILAKA, yenye yezinto ezicingelwayo zomatshini kwizicelo ezinjalo, ngelixa ukulayisha okujikelezayo ukuya kuthi ga ekudinweni kwezi zakhiwo nako kuyaxatyiswa.
Ishishini lezonyango liye lasebenzisa imvula-eqinisa iintsimbi ezingenasici kwizixhobo zotyando kunye nokufakelwa, apho i-biocompatibility, amandla, kunye nokumelana nokubola kubalulekile ngaphezu kwenjongo eyiliweyo. Ezi ngxubevange zineepropathi zoomatshini eziluncedo ezinamandla okugqibela angaphezulu kwe-1200 MPa kunye nobunzima bokufunda malunga neRockwell C30. Bakwaqeshwa kwizicelo zonyango apho ukusebenza kunye nokhuseleko kubalulekile. Ukusonga iipleyiti ezivela kwi-precipitation-hardening steel stainless steel kunika ukuguquguquka kumacandelo amaninzi ngenxa yezinto ezigxile kwiipropati zabo zoomatshini kunye nokukwazi ukwenza phantsi kweemeko ezinzima.
Ukomelela kunye noKuhlala ixesha elide kwe-Precipitation Hardening Alloys
Kuwo onke amava am, i-alloys yolu hlobo luqinile kwaye luhlala luhlala ngenxa ye-microstructure yabo, apho ukudibanisa okufanelekileyo kweenkqubo zonyango zokushisa kuye kwaphuhliswa ngakumbi. Olu nyango lujolise ekwandiseni ubunzima kunye nokulahlekelwa kwe-hysteresis ye-alloys ukwenzela ukuba uxinzelelo oluncinci lufakwe kwimilo ye-alloys kwimithwalo ephezulu. Nangona kunjalo, ndiqaphele kwizicelo ezithile ukuba ii-alloys ezinjalo zigcinwa ekusebenziseni okusebenzayo ngenxa yeempawu zabo zomatshini nakwindawo enobutshaba - ubushushu kunye nomphunga. Ukubandakanya ukukhanya kakhulu kodwa okugqithisileyo kunye nokuqina kwemvula eyenza lukhuni i-alloys kuya kuzisa iimveliso zeyona ndlela ikhuselekileyo yoyilo kumashishini aquka i-aerospace kunye nezonyango, ezifuna ukuthembeka kunye nokhuseleko. Ke, amandla kunye nokuqina kwazo zizinto ezibalulekileyo eziye zazisa ukwamkelwa kwazo kunye nokuveliswa kobuninzi bezicelo ezifunwa kakhulu.
Imithombo yolwazi
Imibuzo ebuzwa rhoqo (FAQs)
Umbuzo: Ngawaphi amabakala ahlukeneyo eepleyiti zensimbi ezingenasici?
A: Amabakala epleyiti yensimbi engenasici abandakanya i-304, 316, 321, kunye namabakala amabini, phakathi kwabanye. Ibanga ngalinye lineempawu ezithile ezilenza lilungele usetyenziso olwahlukeneyo.
Q: Uthini umahluko phakathi kwe-304 yensimbi engenasici kunye ne-316 yensimbi engenasici?
A: Umahluko omkhulu phakathi kwe-304 yensimbi engenasici kunye ne-316 yensimbi engenasici kukuba i-316 iqulethe i-molybdenum, eyandisa ukuxhathisa kwayo, ngokukodwa ngokuchasene ne-chlorides. Oku kwenza i-316 ilungele iindawo zaselwandle kunye neekhemikhali.
Umbuzo: Ziziphi iimpawu eziphambili zeeshiti zensimbi ezingenasici?
A: Amashiti entsimbi aziwa ngokuhlala ixesha elide, ukuxhathisa umhlwa, kunye nesibheno sobuhle. Zifumaneka kumabakala ahlukeneyo, afana ne-304 kunye ne-316, kwaye ingasetyenziselwa kwiintlobo ezahlukeneyo zezicelo, ukusuka kwizixhobo zasekhitshini ukuya kwizinto zokwakha.
Umbuzo: Umxholo wechromium uchaphazela njani ibakala lensimbi engenasici?
A: I-Chromium yinto ebalulekileyo yokuxuba kwintsimbi engatyiwa, ngokuqhelekileyo iqulunqa ubuncinane i-10.5% yealloyi. Yenza umaleko we-passive kumphezulu, unikezela ukuchasana nomhlwa kunye nokugqwala, ngaloo ndlela kuphembelela ibakala lensimbi engenasici.
Q: Yintoni intsingiselo yoluhlu lwe-300 kwintsimbi engenasici?
A: Uluhlu lwe-300 liqela le-austenitic stainless steels ezibonakaliswe ngumxholo ophezulu we-nickel, obonelela ngokugqwesileyo kokuxhathisa ukubola kunye nokubumba. Amabanga aqhelekileyo kolu chungechunge abandakanya i-304, 304L, kunye ne-316.
Q: Zeziphi izicelo ezisebenzisa iimveliso zensimbi engenasici?
A: Iimveliso zensimbi ezingenasici zisetyenziswa ngokubanzi kumashishini ahlukeneyo, kuquka ukwakhiwa, iimoto, ukulungiswa kokutya, kunye nezixhobo zonyango, ngenxa yamandla azo, ukuqina, kunye nokuchasana nokubola.
Q: Yintoni eyenza amabanga aphindwe kabini entsimbi engenakutyiwa ahluke?
A: Amabakala e-Duplex ensimbi engenasici aqulethe umxube we-austenitic kunye nezakhiwo ze-ferritic, ukubonelela ukomelela okwandisiweyo kunye nokuphucula ukuchasana noxinzelelo lwe-corrosion cracking, ezenza zilungele iindawo ezinzima.
Umbuzo: Ndikhetha njani ibakala elifanelekileyo lepleyiti yensimbi engenasici kwiprojekthi yam?
A: Ukukhetha ibakala elifanelekileyo lepleyiti yensimbi engenasici kubandakanya ukuqwalasela izinto ezifana nokusingqongileyo (i-corrosion exposure), iipropati ezifunwayo zemishini (amandla, ukuxhathisa ukunxiba), kunye nokuthotyelwa kwemigangatho yamazwe ngamazwe kwisicelo sakho esithile.
Umbuzo: Ziziphi iingenelo zokusebenzisa i-alloys yensimbi engenasici kwimveliso?
A: I-alloys yentsimbi engatyiwayo ibonelela ngezinto ezininzi eziluncedo, kubandakanywa ukuxhathisa kokutya, ukomelela, ukumila, kunye nokukwazi ukumelana namaqondo obushushu aphezulu. Ezi zakhiwo zibenza balungele ukusetyenziswa kwemizi-mveliso eyahlukeneyo kunye neemveliso zabathengi.
Umbuzo: Ngaba amashiti ensimbi angasetyenziselwa usetyenziso lwangaphandle?
A: Ewe, ishidi lensimbi engenastainless lilungele ukusetyenziswa kwangaphandle, ngakumbi amabanga afana ne-316, anika ukuchasana okuphuculweyo kwi-corrosion evela kwimiba yokusingqongileyo. Oku kuyenza ilungele ukusetyenziswa kwifanitshala yangaphandle, izixhobo, kunye nezinto zokwakha.
