Thaum tshav kub kub kho Technology ntawm Stainless hlau nyob rau hauv peev Foundry

Jan 02, 2023

Thaum tshav kub kub kho Technology ntawm Stainless hlau nyob rau hauv peev Foundry

(1) Martian xoob hlau stainless hlau: Hom stainless hlau no muaj lub cev nruab nrab cubic qauv (BCC) uas tuaj yeem nyiam cov hlau nplaum thiab ua rau lawv quenched los ntawm Austen kub. Hom stainless hlau no muaj qhov zoo tshaj plaws corrosion kuj, tab sis cov khoom yog tawv thiab nkig. Tempering yuav ua rau kom cov ductility, tab sis cov corrosion kuj yuav txo, tshwj xeeb tshaj yog thaum tempering ntawm 450 degree thiab 650 degree, Nws yuav ua rau carbon atoms nyob rau hauv lub siv lead ua lattice sib txawv mus rau diffuse thiab precipitate chromium carbide thiab tsim ib tug network ntawm chromium, uas yuav ua rau lub ductility. noj cov chromium ntsiab nyob rau hauv qhov chaw nyob ib sab kom txo tau cov chromium muaj pes tsawg leeg, tiv thaiv kev tsim ntawm ib tug tiv thaiv zaj duab xis, thiab poob lub corrosion kuj, yog li yuav tsum tau them tshwj xeeb mloog. Cov nram qab no yog qhov kev kho cua sov ntawm ntau yam stainless hlau cov ntaub ntawv ntawm Matian xoob hlau.

(a) Qhov kub ntawm 403410416se yog 650-750 degree .

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

(2) Fat grain hlau stainless hlau: Qhov no stainless hlau lub cev nruab nrab cubic qauv (BCC) tuaj yeem nyiam cov hlau nplaum, uas 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 tuaj yeem ua kom txias txias.

(3) Austen hlau stainless hlau: Lub ntsej muag stainless hlau lub ntsej muag nruab nrab cubic qauv (FCC) tsis cuam tshuam rau cov hlau nplaum. Raws li tau hais los saum toj no, cov khoom siv no yooj yim rau kev ua, yog li tom qab ua tiav, nws tuaj yeem tshem tawm qhov kev ntxhov siab ntawm cov khoom siv thiab siv cov kev kho cua sov sib txawv.

(4) Precipitation hardening stainless hlau: hom stainless hlau no yog quenched ntawm qhov kub thiab txias thiab ces kub kho ntawm qhov kub thiab txias. Lub zog lossis hardness ntawm hom stainless hlau no tuaj yeem txhim kho vim nag lossis daus ntawm txhuas lossis tooj liab hauv cov khoom tsim los ua cov hlau sib txuas ntawm cov zawv zawg saum npoo los yog lis ciam ntawm cov kab sib txawv. Cov nag lossis daus hardening stainless hlau 17-4PH feem ntau yog siv, thaum lwm tus suav nrog 17-7PH, PH15-7MO, AM-350, AM-355, thiab lwm yam.

(5) Tom qab vuam kev kho cua sov ntawm ntau yam stainless hlau: Tom qab vuam, cov chromium muaj nyob rau hauv stainless hlau feem ntau yuav diffuse thiab precipitate nyob rau hauv qhov kub thiab txias cheeb tsam (tshav kub cuam tshuam cheeb tsam) thiab tsim chromium carbide los ntawm carbon bonding, ua rau lub zos txo ntawm chromium. cov ntsiab lus thiab ua tsis tiav los tsim cov yeeb yaj kiab tiv thaiv. Corrosion xws li perforation feem ntau tshwm sim nyob rau hauv cov tshav kub cuam tshuam cheeb tsam, uas yuav kho tau qhov teeb meem no. Cov neeg ua haujlwm feem ntau ua kom sov kho cov khoom tom qab vuam, Nws txoj haujlwm tuaj yeem ua rau cov chromium nyob rau lwm qhov chaw diffuse mus rau thaj tsam chromium tsis txaus kom ua tiav kev tiv thaiv.

Cov lus tseem ceeb: stainless hlau casting, precision casting, Shenzhen casting, Is Nrias teb casting, Dongguan casting, carbon hlau, precision casting, alloy steel, martensitic stainless hlau, austenitic stainless hlau, silica sol casting