Yenziwe ngentsimbi eshayinayoluhlobo lwentsimbi, intsimbi ibhekisa kwisixa sekhabhoni (C) kule 2% ilandelayo ibizwa ngokuba yintsimbi, ngaphezulu kwe-2% yintsimbi. Isinyithi kwinkqubo yokunyibilikisa ukongeza ichromium (Cr), nickel (Ni), manganese (Mn), isilicon (Si), titanium (Ti), imolybdenum (Mo) kunye nezinye izinto zokuxutywa ukuze kuphuculwe ukusebenza kwentsimbi ukuze intsimbi ibe nayo. ukuxhathisa umhlwa (oko kukuthi, hayi umhlwa) ngaba sihlala sisithi intsimbi engenasici.
Insimbi engenasici kwinkqubo yokunyibilika, ngenxa yokongezwa kwezinto ezixutywayo zeentlobo ezahlukeneyo, iintlobo ezahlukeneyo zesixa esihlukeneyo. Iimpawu zayo zikwahluke, ukwenzela ukwahlula isithsaba kwiinombolo zetsimbi ezahlukeneyo.
Ukuhlelwa okuqhelekileyo kwensimbi engenasici
1. 304 intsimbi engenasici
I-304 insimbi engenastainless lolona hlobo luxhaphakileyo lwentsimbi, njengentsimbi esetyenziswa kakhulu, inokumelana ne-corrosion, ukumelana nobushushu, amandla asezantsi obushushu kunye neempawu zoomatshini; Stamping, ukugoba kunye nezinye inkqubo thermal isakhono elungileyo, akukho unyango ubushushu lukhuni isenzeko (akukho magnetic, ngoko sebenzisa lobushushu -196℃ ~ 800℃).
Ubungakanani besicelo: amanqaku asekhaya (i-1, i-2 tableware, iikhabhinethi, iipayipi zangaphakathi, izifudumezi zamanzi, iibhoyili, iibhafu); Amalungu e-Auto (i-windshield wiper, i-muffler, iimveliso zokubumba); Izixhobo zonyango, izixhobo zokwakha, iKhemistri, iShishini lokutya, ezoLimo, iiNdawo zeenqanawa
2. 304L intsimbi engatyiwa (L yikhabhoni ephantsi)
Njengentsimbi ephantsi yekhabhoni ye-304, kwimeko jikelele, ukuxhathisa ukubola kunye ne-304 nje efanayo, kodwa emva kwe-welding okanye ukupheliswa koxinzelelo, ukuchasana kwayo kwi-corrosion boundary nekhono kuhle kakhulu; Kwimeko yokungabikho konyango lobushushu, kunokugcina ukuxhathisa okulungileyo kokuhlwa, ukusetyenziswa kobushushu -196℃ ~ 800℃.
Ububanzi besicelo: isetyenziswe kumashishini ekhemikhali, amalahle kunye nepetroleum aneemfuno eziphezulu zokuchasana nomda wokutya okuziinkozo koomatshini bangaphandle, izinto zokwakha ezichasene nobushushu kunye neengxenye ezinobunzima bonyango lobushushu.
3. 316 intsimbi engenasici
I-316 insimbi engenasici ngenxa yokongezwa kwe-molybdenum, ngoko ke ukuxhathisa ukubola, ukuxhathisa kwe-atmospheric corrosion kunye namandla okushisa aphezulu kulungile, kunokusetyenziswa phantsi kweemeko ezinzima; Umsebenzi ogqwesileyo wokuqina (awunamagnetic).
Ubungakanani besicelo: izixhobo zamanzi olwandle, iikhemikhali, idayi, ukwenza iphepha, i-oxalic acid, isichumisi kunye nezinye izixhobo zokuvelisa; Iifoto, ishishini lokutya, izibonelelo eziselunxwemeni, iintambo, ii-CD rods, iibholiti, iinati.
4. I-316L ayinasici (i-L iphantsi kwekhabhoni)
Njengoko uchungechunge lwekhabhoni ephantsi ye-316 yensimbi, ngaphezu kweempawu ezifanayo kunye ne-316 yensimbi, ukuchasana kwayo nomda wokutya okuziinkozo kuhle kakhulu.
Ububanzi besicelo: iimfuno ezikhethekileyo zokumelana neemveliso zokubola komda weenkozo.
Uthelekiso lweNtsebenzo
1. Ukuqulunqwa kweekhemikhali
Iintsimbi ze-stainless 316 kunye ne-316L ziyi-molybdenum equkethe iintsimbi ezingenasici. Umxholo we-molybdenum we-316L yensimbi engenasici iphezulu kancinane kune-316 yensimbi engenasici. Ngenxa ye-molybdenum kwintsimbi, ukusebenza ngokubanzi kwentsimbi kungcono kune-310 kunye ne-304 yensimbi ezingenasici. Ngaphantsi kweemeko eziphezulu zokushisa, xa ukuxinwa kwe-asidi ye-sulfuric kungaphantsi kwe-15% kwaye ngaphezu kwe-85%, i-316 i-stainless steels ineendlela ezininzi zokusetyenziswa. I-316 insimbi engenasici nayo ineempawu ezilungileyo kunye ne-chloride yokhukuliseko, ngoko isetyenziswa ngokuqhelekileyo kwiindawo zaseLwandle. I-316L insimbi engenasici inomxholo ophezulu wekhabhoni we-0.03. Ifanelekile kwizicelo apho i-post-weld annealing ingenakwenzeka kwaye apho ubuninzi bokumelana nomhlwa bufunekayo.
2. Coukuxhathisa ukukhukuliseka
Ukuxhatshazwa kwe-corrosion ye-316 insimbi engenasici ingcono kune-304 yensimbi engenasici. Inokumelana ne-corrosion elungileyo kwinkqubo yokuvelisa i-pulp kunye nephepha. Kwaye i-316 insimbi engenasici nayo iyamelana nokukhukuliseka kwe-Marine kunye ne-aggressive industrial atmosphere. Ngokubanzi, i-304 yensimbi engenasici kunye ne-316 yensimbi engenasici ekuchaseni kwiipropati zokubola kweekhemikhali zomahluko omncinci, kodwa kwezinye imidiya ethile iyahluka.
304 intsimbi engatyiwayo yaphuhliswa ekuqaleni, eyayinovakalelo kwiPitting Corrosion kwiimeko ezithile. Ukongeza i-2-3% eyongezelelweyo i-molybdenum yanciphisa le mvakalelo, okubangelwa 316. Ukongezelela, le molybdenum eyongezelelweyo inokunciphisa ukubola kwezinye ii-acids ezishushu eziphilayo.
I-316 insimbi engenasici iphantse yaba yinto eqhelekileyo kwishishini lokutya nesiselo. Ngenxa yokunqongophala kwe-molybdenum emhlabeni jikelele kunye nomxholo ophezulu we-nickel kwi-316 yensimbi engenasici, i-316 insimbi engenasici ibiza kakhulu kune-304 insimbi engenasici.
I-Pitting corrosion yinto ebangelwa ikakhulu yi-corrosion efakwe kumphezulu wensimbi engenasici, ngenxa yokungabikho kwe-oksijini kwaye ayikwazi ukwenza umaleko okhuselayo we-chromium oxide. Ngokukodwa kwiivalve ezincinci, kukho ithuba elincinci lokubeka kwi-disc, ngoko ke i-pitting ayinqabile.
Kwiindidi ezahlukeneyo zamanzi aphakathi (amanzi adibeneyo, amanzi okusela, amanzi omlambo, amanzi ebhoyila, amanzi olwandle, njl.), i-304 stainless steel kunye ne-316 stainless steel corrosion resistance iphantse ifane, ngaphandle kokuba umxholo we-chloride ion phakathi. phezulu kakhulu, ngeli xesha i-316 insimbi engenasici ifanelekile ngakumbi. Kwiimeko ezininzi, ukuxhatshazwa kwe-corrosion ye-304 yensimbi engenasici kunye ne-316 yensimbi engenasici ayifani kakhulu, kodwa kwezinye iimeko ingaba yahluke kakhulu, kufuneka ihlalutywe kwimeko-nge-case.
3. Ukumelana nobushushu
I-316 insimbi engenasici inokumelana ne-oxidation efanelekileyo ekusebenziseni okungapheliyo ngaphantsi kwe-1600 degrees kunye nokusetyenziswa okuqhubekayo ngaphantsi kwe-1700 degrees. Kuluhlu lwe-800-1575 degrees, kungcono ukuba ungaqhubeki nomphumo we-316 yensimbi engenasici, kodwa kwiqondo lokushisa lokusetyenziswa okuqhubekayo kwe-316 yensimbi engenasici, insimbi engenasici inokumelana nokushisa okulungileyo. I-316L yensimbi engenasici inokuchasana okungcono kwi-carbide precipitation kune-316 insimbi engenasici, enokusetyenziswa kwiqondo lokushisa elingentla.
4. Unyango lobushushu
Ukufakwa kwe-Annealing kwenziwa kuluhlu lweqondo lobushushu ukusuka kwi-1850 ukuya kuma-2050 degrees, kulandelwa kukuhlanjululwa ngokukhawuleza kunye nokupholisa ngokukhawuleza. I-316 insimbi engenasici ayinakutshiselwa ngokugqithisileyo ukuze iqine.
5. Ukuwelda
I-316 insimbi engenasici inesakhono esihle se-weld. Zonke iindlela ze-welding eziqhelekileyo zingasetyenziselwa i-welding. Ngokwenjongo ye-welding, i-316CB, 316L okanye i-309CB intonga yokupakisha yensimbi engenasici okanye i-electrode ingasetyenziselwa ukudibanisa. Ukuze ufumane ukuchasana kwe-corrosion, icandelo le-welding ye-316 yensimbi engenasici kufuneka ihlanjululwe emva kwe-welding. I-post weld annealing ayifuni ukuba i-316L insimbi engenasici isetyenzisiweyo.
Hikelokintsimbi engenamthungo ityhubhusebenzisa izinto ezingama-316L. ezinye izifakelo ityhubhu kunye neevalvu zihlala zisebenzisa izinto ezingama-316.
Ixesha lokuposa: Feb-23-2022