Stainless hlau tshav kub kho tshuab

Stainless hlau tshav kub kho tshuab

Cov khoom chromium muaj qhov tseem ceeb ntawm kev ua stainless rau cov khoom siv no. Yav dhau los, nws tau pom tias cov ntsiab lus chromium yuav tsum muaj ntau dua 12% los tsim cov yeeb yaj kiab oxide ntom ntom rau saum npoo kom ua tiav cov nyhuv tiv thaiv corrosion. Yog li ntawd, txhua yam kev kho cua sov ntawm stainless hlau yuav tsum coj mus rau hauv tus account seb cov chromium tivthaiv muaj kev hloov pauv.

(BCC) tuaj yeem nyiam cov hlau nplaum. Nws yog ua los ntawm Austrian teb kub quenching thiab muaj qhov zoo tshaj plaws corrosion kuj, tab sis cov khoom yog nyuaj (1) Martin xoob hlau: cov tub ntxhais (BCC) uas stainless hlau yog lub ntsiab qauv ua nkig, thiab ces Tempering yuav ua rau kom ductility, tab sis corrosion kuj yuav raug txo, tshwj xeeb tshaj yog tempering ntawm 450 degrees Celsius thiab 650 degrees Celsius, uas yuav ua rau carbon atoms thiab chromium diffuse nyob rau hauv lub lattice sib txawv los ua ib tug network ntawm chromium carbide, ua rau noj cov chromium, nyob ze cov chromium cov ntsiab lus nyob rau hauv. thaj chaw raug txo qis, cov yeeb yaj kiab tiv thaiv tsis tuaj yeem tsim tau, thiab kev tiv thaiv corrosion poob, yog li yuav tsum tau saib xyuas tshwj xeeb. Cov hauv qab no yog kev kho cua sov rau ntau yam Amantha hlau-raws li stainless hlau.

(1) Qhov kub ntawm 403, 410 thiab 416se yog 650-750 degree .

(B) Qhov kub ntawm 414 yog 650-730 degree .

(C) Qhov kub ntawm 431 yog 6.

(D) 440-A, 440-B, 440-C, 420 ntawm qhov kub ntawm 680-750 degree .

(2) Cov hlau tsis muaj roj: Cov hlau tsis muaj hlau no muaj lub cev-qhov nruab nrab cubic qauv (BCC) thiab tuaj yeem siv rau kev nyiam cov hlau nplaum. Nws feem ntau yog siv hauv kev lag luam tsheb lossis kev lag luam tshuaj. Lub zog yuav tsis hloov vim kev kho cua sov, tab sis nws tuaj yeem ua rau lub zog ua haujlwm txias.

(3) Osti hlau stainless hlau: Cov hlau stainless no tsis ua haujlwm rau lub ntsej muag-centered cubic (FCC) hlau nplaum. Raws li tau hais los saum toj no, cov ntaub ntawv zoo li no yooj yim rau kev ua, yog li qhov seem ntawm cov khoom siv yuav tsum raug tshem tawm tom qab ua tiav thiab siv cov kev kho cua sov sib txawv.

(4) Precipitation hardening stainless hlau: Tom qab high-temperature quenching thiab low-temperature heat treatment, stainless steel hom no muaj txhuas los yog tooj liab cov ntsiab lus, uas precipitate raws lub dav hlau lean los yog grain ciam rau cov tebchaw (intermetallic compounds). compound) kom nws lub zog los yog hardness. Feem ntau siv los nag lossis daus hardening stainless hlau yog 17-4 PH, thiab lwm yam suav nrog 17-7 PH, PH15-7MO, AM-350, AM-355, thiab lwm yam.

(5) Tom qab vuam kev kho cua sov ntawm ntau hom stainless hlau: Cov chromium muaj nyob rau hauv stainless hlau nyhav mus rau hauv qhov chaw kub kub (tshav kub-tshem tawm tsam) tom qab vuam thiab ua rau carbides hloov mus rau hauv chromium, ua rau siab hauv zos txo cov ntsiab lus chromium thiab tsis muaj peev xwm tsim kev tiv thaiv. Zaj duab xis, thiab cov xwm txheej corrosion xws li perforation feem ntau tshwm sim nyob rau hauv cov cheeb tsam uas muaj cua sov. Txhawm rau kho qhov teeb meem no, cov khoom siv feem ntau raug kho tom qab vuam. Cov khoom chromium uas ua rau lwm qhov chaw diffuses rau hauv qhov chaw tsis muaj chromium kom ua tiav cov txiaj ntsig tiv thaiv.