Stainless hlau yeeb nkab tam sim no ntau thiab ntau lug siv, vim nws zoo corrosion kuj tau ua lub luag hauj lwm tseem ceeb nyob rau hauv engineering tsim, nyob rau hauv cov txheej txheem ntawm ntau lawm peb xav tau ib tug khoom tov rau stainless hlau raj ua, lub ntsiab lub hom phiaj yog kom tau txais tej yam martensite nce. lub hardness ntawm cov khoom, cia saib cov kev daws ntawm stainless hlau raj ua:
(1) Tom qab kev daws teeb meem, nws yog rhuab mus rau (760 ± 15) ℃, thiab cov ntsiab lus ntawm carbon thiab alloyed ntsiab nyob rau hauv lub austenitic 904L stainless hlau raj yog txo vim nag lossis daus ntawm Cr23C6 carbide los ntawm austenitic 904L stainless hlau raj rau 90min, thiaj li hais tias Ms point yog nce mus rau 70 ℃ thiab ces txias rau chav tsev kub kom tau martensite + αferrite + residual austenitic qauv.Cov residual austenite tau decomposed los ntawm kev laus ntawm 510 ℃.
(2) tom qab kev hloov pauv kub thiab kev kho cua sov, cov tshuaj yog thawj zaug rhuab mus rau 950 ℃ thiab tuav rau 90 feeb.Vim qhov nce ntawm Ms point, me me ntawm martensite tuaj yeem tau txais tom qab txias rau chav sov.Tom qab ntawd, qee qhov ntawm martensite tuaj yeem tau txais los ntawm -70 ℃ txias kho thiab tuav rau 8h.
(3) Tom qab kev daws teeb meem los ntawm txoj kev txias deformation, lub martensite tsim los ntawm 904L seamless raj yog txias deformed ntawm chav tsev kub.Tus nqi ntawm martensite tsim los ntawm 904L seamless raj thaum lub sij hawm txias deformation muaj feem xyuam rau tus nqi deformation thiab muaj pes tsawg leeg ntawm 904L stainless hlau raj.
Peb txoj kev saum toj no feem ntau siv stainless hlau raj tshuaj kho txoj kev vam tias yuav coj kev pab rau koj.
Post lub sij hawm: Jan-29-2023