Txawm hais tias muaj cov kev hloov pauv hauv cov hlau, cov khoom siv tuaj yeem muaj ntawv pov thawj dual vim tias cov kev hloov pauv yuav nyob rau theem tsawg heev. Thiab yog li ob daim ntawv pov thawj alloy yuav raug sau tias yog 316/316L. Yog li tus nqi rau ob qho tib si alloys yuav luag zoo ib yam.
316 thiab 316l sib piv
Ntxiv rau qhov qis carbon cov ntsiab lus ntawm qib 316L stainless hlau, cov chaw tsim khoom ntxiv nitrogen rau nws cov alloys. Nitrogen ntxiv rau cov hlau vim ntau yam. Ua ntej, tag nrho cov neeg kho tshuab lub zog ntawm qib 316 stainless hlau txo nrog txo cov ntsiab lus carbon. Qhov thib ob, nws cov cua sov kuj tau txo qis. Txawm li cas los xij, vim muaj cov ntsiab lus qis carbon ntawm nws cov tshuaj muaj pes tsawg leeg,qib316L welds tsis tshwm sim intergranular corrosion.
Qhov sib txawv ntawm 316 thiab 316l corrosion kuj
Raws li tau hais ua ntej, qib 316 stainless hlau yog muag rau nws cov weldability zoo. Txo cov ntsiab lus ntawm cov pa roj carbon monoxide tuaj yeem txo qis kev sib txhuam ntawm cov hlau, tshwj xeeb tshaj yog nyob rau hauv tshav kub cuam tshuam vuam cheeb tsam. Zoo ib yam li qib 316, qhov qis-carbon version ntawm cov hlau tseem hu ua dej hiav txwv qib steel vim nws tiv taus cov dej hiav txwv thiab dej ntsev. Yog li ntawd, cov hlau kuj tseem muaj ntawv pov thawj dual kom tau raws li qhov xav tau ntawm ntau yam kev siv. Tsis tas li ntawd, zoo li qib 316, nws yog resistant rau atmospheric corrosion, kuj hu ua oxidation kuj. Dual-certified alloys kuj tseem siv tau rau hauv cov ntawv thov uas muaj cov tshuaj halogen, suav nrog chlorine, fluorine, thiab bromine. Vim lawv cov corrosion kuj, lawv dhau los ua ib feem tseem ceeb ntawm cov neeg siv khoom lag luam.