Sib piv rau Stainless Hlau 304 304L 316 316L

Kev sib piv kev ua haujlwm

316 thiab 316L stainless hlau muaj cov ntsiab lus ntawm Mo. Cov ntsiab lus ntawm Mo hauv 316L yog me ntsis siab dua uas nyob rau hauv stainless hlau 316. Vim yog ntxiv cov ntsiab lus ntawm Mo, tag nrho cov kev ua tau zoo ntawm SS316 thiab SS316L nyob rau hauv lub kub kub yog zoo dua li SS31{ {13}} thiab SS304, kuj yog thaum cov concentration ntawm sulfuric acid qis dua 15 feem pua ​​lossis siab dua 85 feem pua, 316 stainless hlau muaj ntau yam kev siv. 316 stainless hlau kuj muaj kev ua tau zoo tiv thaiv chloride corrosion, yog li nws feem ntau yog siv nyob rau hauv marine ib puag ncig. Qhov siab tshaj plaws cov ntsiab lus ntawm 316L yog 0.03, uas tuaj yeem siv rau ntawm cov khoom siv tsis tuaj yeem raug muab tshem tawm tom qab vuam lossis nws yuav tsum muaj kev tiv thaiv corrosion ntau tshaj.

Corrosion kuj kev sib piv

Lub corrosion kuj ntawm 316 stainless hlau yog zoo dua li ntawm 304 stainless hlau.

Nws muaj zoo corrosion kuj nyob rau hauv zus tau tej cov pulp ntawv ua. Thiab 316 stainless

Hlau kuj tseem tiv taus yaig los ntawm marine los yog txhoj puab heev industrial atmospheres.

Feem ntau hais lus, rau tshuaj tiv thaiv corrosion, 304 stainless hlau thiab 316 stainless hlau muaj kev ua tau zoo sib xws, tsuas yog txawv ntawm qee qhov kev tshaj tawm.

Thawj tsim stainless hlau yog 304, thaum cov khoom no yog rhiab heev rau pitting corrosion nyob rau hauv tej rooj plaub. Yog li, qhov ntxiv 2-3 feem pua ​​Mo txo ​​qhov rhiab heev, yog li muab yug rau stainless hlau 316, ntxiv rau qhov no, cov ntsiab lus ntxiv ntawm Mo kuj tuaj yeem txo qhov corrosion ntawm qee cov organic acid eclipse.

Niaj hnub no, 316 stainless hlau tau yuav luag dhau los ua cov khoom siv hauv kev lag luam zaub mov thiab dej haus. Vim tias qhov tsis txaus ntawm Mo lub hauv ntiaj teb thiab kev koom tes ntau dua ntawm cov khoom Ni, 316 stainless hlau yog kim dua li 304 stainless hlau.

Pitting corrosion yog ib qho tshwm sim feem ntau tshwm sim los ntawm deposition corrosion nyob rau saum npoo ntawm stainless hlau, uas yog vim tsis muaj oxygen thiab tsis muaj peev xwm tsim ib tug tiv thaiv oxide txheej.

Tshwj xeeb tshaj yog nyob rau hauv me me li qub, muaj peev xwm ntawm deposits ntawm lub valve phaj yog heev me me,

Yog li ntawd, pitting corrosion kuj tsis tshua muaj tshwm sim.

Hauv ntau hom dej xov xwm (steam cia dej, dej haus, dej dej, boiler

Corrosion tsis kam ntawm 304 stainless hlau thiab 316 stainless hlau yog yuav luag tib yam, tshwj tsis yog tias cov ntsiab lus ntawm chloride ions nyob rau hauv nruab nrab yog siab heev, uas 316 stainless hlau yog ntau haum.

Corrosion kuj ntawm 304 stainless hlau vs 316 stainless hlau feem ntau tsis muaj qhov sib txawv, tab sis qee qhov tshwj xeeb nws tuaj yeem sib txawv heev, nws nyob ntawm qhov xwm txheej tiag tiag. Feem ntau hais lus, cov neeg siv valve yuav tsum paub xaiv cov khoom tsim nyog rau lawv cov khoom siv thiab cov kav dej raws li qhov xwm txheej tiag tiag, yog li nws tsis pom zoo los txiav txim siab cov ntaub ntawv rau cov neeg siv.

kub tsis kam

Kev siv tsis sib xws hauv qab 1600 degrees lossis txuas ntxiv siv qis dua 1700 degrees, 316 stainless hlau muaj oxidation zoo. Thaum nruab nrab ntawm qhov kub ntawm 800-1575 degree, nws yog qhov zoo dua tsis siv SS316 tsis tu ncua, rau qhov kub tshaj qhov no, stainless hlau muaj qhov kub thiab txias. Qhov kev ua tau zoo ntawm carbide nag lossis daus tsis kam ntawm 316L stainless hlau yog zoo dua li 316 stainless hlau thiab tuaj yeem siv tau rau qhov ntsuas kub no.

Kev kho cua sov:

Annealed nyob rau hauv qhov kub ntawm 1850-2050 degrees, ces sai sai retreated

hluav taws kub, thiab ua kom nws txias sai, 316 stainless hlau tsis tuaj yeem hardened los ntawm overheating.

vuam

316 stainless hlau muaj peev xwm vuam zoo. Txhua txoj kev vuam txheej txheem tuaj yeem siv tau, raws li daim ntawv thov sib txawv, peb tuaj yeem siv 3160b. 316L lossis 309cb stainless hlau muab tub lim lossis electrode rau vuam. Txhawm rau kom tau txais qhov zoo tshaj plaws corrosion tsis kam ntawm SS316, annealing yog xav tau rau vuam seem tom qab vuam, thaum yog siv 316L stainless hlau, annealing tsis tas yuav tsum tau tom qab vuam.