Stainless hlau yog ib hom high-alloy steel uas tuaj yeem tiv taus corrosion hauv huab cua lossis tshuaj lom neeg nruab nrab.Nws muaj qhov zoo nkauj zoo nkauj thiab zoo corrosion kuj.Nws tsis tas yuav tau txais kev kho deg xws li xim plating, tab sis nws ua rau lub hauv paus ntawm cov khoom ntawm stainless hlau.Nws yog siv nyob rau hauv Ib hom multifaceted steel.
Niaj hnub no, cov khoom siv stainless hlau tau siv dav hauv kev lag luam thiab lub neej.Yog li yuav ua li cas kom paub qhov txawv ntawm qhov tseeb ntawm stainless hlau?Hauv qab no, British editor yuav coj koj nkag siab:
1. Cov txheej txheem tshuaj zoo
Cov txheej txheem tshuaj zoo yog ib txoj hauv kev txheeb xyuas seb puas muaj cov hlau nplaum hlau tsis muaj nickel.Txoj kev yog kom yaj ib qho me me ntawm cov hlau tsis huv hauv aqua regia, dilute cov kua qaub nrog dej huv, ntxiv ammonia dej rau nruab nrab, thiab maj mam txhaj cov nickel reagent.Yog tias muaj cov khoom siv liab velvet ntab rau ntawm cov kua dej, nws txhais tau tias cov hlau tsis muaj nickel;Yog tias tsis muaj cov tshuaj velvet liab, nws txhais tau hais tias tsis muaj npib tsib xee hauv stainless hlau.
2. Nitric acid
Ib qho tseem ceeb ntawm cov hlau tsis muaj steel yog nws qhov kev tiv thaiv corrosion rau cov concentrated thiab dilute nitric acid.Peb tuaj yeem siv nitric acid los drip rau cov khoom siv stainless hlau, uas tuaj yeem ua kom pom tseeb, tab sis peb yuav tsum tau ua tib zoo saib xyuas qhov tseeb tias cov pa roj carbon monoxide 420 thiab 440 steel yog me ntsis corroded thaum lub sij hawm ntsuas nitric acid point, thiab cov hlau tsis muaj hlau. yuav tam sim ntawd raws li concentrated nitric acid.corroded.
3. Copper sulfate point test
Tshem tawm cov oxide txheej ntawm cov hlau, muab tso rau hauv dej, so nrog tooj liab sulfate, yog tias nws tsis hloov xim tom qab txhuam, nws feem ntau yog stainless hlau;hlau alloy.
4. Xim
Cov xim ntawm cov kua qaub-ntxuav stainless hlau: chrome-nickel stainless hlau yog silvery dawb jade xim;chrome stainless hlau yog greyish dawb thiab glossy;cov xim ntawm chrome-manganese-nitrogen stainless hlau zoo ib yam li chrome-nickel stainless hlau thiab sib zog me ntsis.Cov xim ntawm cov hlau tsis huv: chrome-nickel steel yog xim av-dawb, chrome-steel yog xim av-dub, thiab chrome-manganese-nitrogen yog dub.Txias-rolled unannealed chrome-nickel stainless hlau nrog nyiaj-dawb reflective nto.
Post lub sij hawm: Oct-12-2022