Qhov txawv ntawm Hastelloy C22 thiab C276 yog dab tsi?
Cov muaj pes tsawg leeg ntawm Hastelloy C22 yog 00Cr22Ni60Mo13W3. Cov muaj pes tsawg leeg ntawm Hastelloy C276 yog 00Cr15Ni60Mo16W4. Qhov sib txawv ntawm CR cov ntsiab lus thiab MO cov ntsiab lus cuam tshuam rau lub tshav kub tsis kam thiab corrosion kuj ntawm cov khoom.
Hastelloy c-22/UNS N06022/ NS338/ NS3308/
WN 2.4602/00Cr22Ni60Mo13W3/NiCr21Mo14W
Metallographic qauv:
Hastelloy C22 muaj lub ntsej muag-centered cubic lattice qauv.
yam ntxwv:
Hastelloy C22 alloy yog ntau yam nickel-chromium-molybdenum-tungsten alloy uas muaj kev tiv thaiv corrosion zoo dua li lwm cov nickel-chromium-molybdenum alloys uas twb muaj lawm, suav nrog Hastelloy C276, C4 alloy thiab 625 alloy. Hastelloy C22 alloy muaj kev tiv thaiv zoo rau pitting corrosion, crevice corrosion thiab kev nyuaj siab corrosion cracking. Nws muaj kev tiv thaiv zoo heev rau oxidation hauv aqueous media, suav nrog cov chlorine ntub dej, nitric acid los yog sib xyaw ntawm oxidizing acids uas muaj chloride ions. Nyob rau tib lub sijhawm, Hastelloy C22 alloy kuj muaj lub peev xwm zoo tshaj plaws los tiv thaiv qhov kev txo qis thiab oxidizing ib puag ncig ntsib thaum lub sijhawm ua haujlwm. Kev vam khom rau qhov kev ua tau zoo no, nws tuaj yeem siv rau qee qhov teeb meem ib puag ncig lossis siv hauv cov chaw tsim khoom rau ntau lub hom phiaj. Hastelloy C22 alloy muaj qhov tshwj xeeb tiv thaiv rau ntau yam tshuaj ib puag ncig, suav nrog cov tshuaj oxidizing zoo xws li ferric chloride, tooj liab chloride, chlorine, thermal pollution solutions (organic thiab inorganic), formic acid, acetic acid, acetic anhydride, seawater thiab ntsev tov, thiab lwm yam. Hastelloy C22 alloy muaj peev xwm tiv thaiv kev tsim cov qoob loo ciam teb nag lossis daus hauv qhov chaw vuam kub cuam tshuam, uas ua rau nws tsim nyog rau ntau cov txheej txheem tshuaj siv hauv lub xeev vuam.
Kev siv thaj chaw:
Hastelloy C22 alloy tau dav siv nyob rau hauv cov tshuaj thiab petrochemical teb, xws li nyob rau hauv lub Cheebtsam thiab catalytic systems uas tuaj rau hauv kev sib cuag nrog chloride-muaj cov organic teeb meem. Cov khoom no yog tshwj xeeb tshaj yog haum rau siv nyob rau hauv high kub, inorganic thiab organic acids tov nrog impurities (xws li formic acid thiab acetic acid), thiab seawater corrosion ib puag ncig.
Nws tuaj yeem siv los tsim cov khoom siv lossis cov khoom hauv qab no:
1. Acetic acid/acetic anhydride; 2. Acid leaching; 3. Cellophane manufacturing; 4. Chlorination system; 5. Cov kua qaub sib xyaw ua ke; 6. Rollers ntawm electro-galvanizing tso tsheb hlau luam;
7. Kev nthuav dav hauv qab; 8. Flue gas cleaner system; 9. Qhov dej kub hauv qab; 10. Hydrogen fluoride rauv tshuab ntxhua khaub ncaws; 11. Incineration cleaner system;
12. Nuclear roj rov tsim dua tshiab; 13. Kev tsim tshuaj tua kab; 14. Phosphoric acid ntau lawm; 15. Pickling system; 16. Phaj kub exchanger; 17. Xaiv qhov system;
18. Sulfur dioxide txias ntauwd; 19. Sulfonation system; 20. Tubular kub exchanger; 21. Overlay vuam valve.
HastelloyC276 yog raws li HastelloyC kom txo tau C thiab SI thiaj li yuav daws tau qhov teeb meem uas HastelloyC tsis resistant rau intergranular corrosion nyob rau hauv lub vuam lub xeev. Txawm li cas los xij, thermal stability ntawm cov hlau tsis zoo.
HastelloyC22 yog raws li C276, uas ua rau kom cov ntsiab lus chromium ntawm cov hlau thiab txo cov molybdenum thiab tungsten, txhawm rau txhim kho corrosion ntawm C4 thiab C276 hauv cov xov xwm oxidizing muaj zog. Txawm hais tias qhov kev tiv thaiv corrosion ntawm oxidizing media zoo dua. Txawm li cas los xij, kev tiv thaiv rau pitting corrosion thiab crevice corrosion tsis tau zoo dua. Qhov kev tiv thaiv corrosion yog zoo dua li C276, C4, thiab 625 alloys, tshwj xeeb tshaj yog haum rau ib puag ncig uas muaj ntau cov tshuaj chlorine thiab oxidants.
