Solid Solution Thiab Annealing Thaum tshav kub kub kho ntawm Stainless hlau kav

Solid tov thiab annealing tshav kub kev kho mob ntawm stainless hlau kav

1. Ua kom cov qauv thiab muaj pes tsawg leeg ntawm cov yeeb nkab steel tsis sib xws. Kev daws thiab kev kho cua sov ntawm cov kav hlau stainless (Daim duab 2) Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog rau cov khoom siv raw, vim tias qhov kub thiab txias ntawm txhua ntu ntawm cov hlau xaim kub yog qhov sib txawv, uas ua rau lub koom haum tsis sib haum xeeb. Nyob rau hauv qhov kub thiab txias, atomic kev ua si intensifies thiab cov tshuaj muaj pes tsawg leeg ua ib yam. Tom qab cua txias sai, ib qho qauv ib-theem yog tau txais.

2. Tshem tawm kev ua haujlwm tawv tawv kom yooj yim rau kev ua haujlwm txias. Kev daws thiab kev kho cua sov ntawm cov kav hlau stainless (Daim duab 2) Los ntawm cov khoom siv kho mob, cov khoom siv hluav taws xob tsis zoo yog rov qab los, cov elongated thiab tawg nplej yog recrystallized, kev ntxhov siab sab hauv raug tshem tawm, lub zog tensile ntawm cov yeeb nkab steel txo, thiab elongation tus nqi nce.

3. Restore lub inherent corrosion kuj ntawm stainless hlau. Kev daws thiab kev kho cua sov ntawm cov kav hlau tsis muaj steel hlau (Daim duab 2) Vim yog nag lossis daus ntawm carbides thiab lattice defects tshwm sim los ntawm kev ua haujlwm txias, qhov corrosion kuj ntawm stainless hlau yog txo. Tom qab kev daws teeb meem, qhov corrosion kuj ntawm cov yeeb nkab steel yog rov qab los rau nws lub xeev zoo tshaj plaws. Rau cov kav dej stainless hlau, peb lub ntsiab lus ntawm kev kho kev daws teeb meem yog qhov kub thiab txias, tuav lub sijhawm thiab tus nqi txias. Qhov kub thiab txias yog txiav txim siab los ntawm cov tshuaj muaj pes tsawg leeg. Feem ntau hais lus, rau cov qib uas muaj ntau hom thiab cov ntsiab lus siab ntawm cov ntsiab lus alloying, cov kua dej kub yuav tsum tau nce ntxiv. Tshwj xeeb tshaj yog rau cov hlau uas muaj cov ntsiab lus siab ntawm manganese, molybdenum, npib tsib xee thiab silicon, cov nyhuv softening tsuas yog ua tiav los ntawm kev nce cov khoom kub thiab ua kom tiav nws.

Txawm li cas los xij, thaum cov khoom kub ntawm cov hlau ruaj khov, xws li 1Cr18Ni9Ti, siab, cov carbides ntawm cov khoom ruaj khov yog tag nrho yaj hauv cov austenite, thiab yuav ua rau hauv daim ntawv ntawm Cr23C6 ntawm cov ciam teb thaum lub sij hawm txias txias, ua rau intergranular corrosion. . Txhawm rau tiv thaiv cov carbides (TiC thiab Nbc) ntawm stabilizing cov ntsiab lus los ntawm decomposing los yog cov kua tov khoom, qhov kev txwv qis ntawm cov khoom kub yog feem ntau saws. Raws li cov lus hais mus, stainless hlau yog hlau uas tsis xeb yooj yim. Qhov tseeb, qee cov hlau stainless muaj ob qho tib si stainless hlau thiab acid tsis kam (corrosion resistance). Lub stainlessness thiab corrosion kuj ntawm stainless hlau yog vim tsim ntawm ib tug chromium-nplua nuj oxide zaj duab xis (passivation zaj duab xis) nyob rau hauv nws nto. Ntawm lawv, stainlessness thiab corrosion kuj yog txheeb ze.