Kev kho cua sov ntawm nag lossis daus Hardening Stainless hlau Castings

Precipitation hardening (PH) martensitic stainless hlau feem ntau muaj cov hlau alloying xws li tooj liab, txhuas, molybdenum, thiab titanium uas tsim ib theem hardened. Cov ntsiab lus alloying no muaj ntau dua solubility hauv austenite, tab sis tsawg heev hauv martensite. Yog li ntawd, kev kho cua sov ntawm nag lossis daus hardening martensitic stainless hlau yuav tsum xub ua cov txheej txheem kho kom tiav cov txheej txheem hardened precipitated nyob rau hauv lub xeev as-cam khwb cia. Tom qab ntawd cov nag lossis daus hardening kev kho yog nqa tawm los nag rau theem nrab hardening theem, yog li txhim kho lub zog ntawm stainless hlau casting thiab ua rau nws muaj corrosion kuj zoo. Tsis tas li ntawd, kev kho kev daws teeb meem kuj tseem txhim kho qhov kev ua haujlwm ntawm kev txiavprecipitation hardening stainless hlau castings.

Cov yam ntxwv ntawm kev kho cua sov ntawm Precipitation Hardening Stainless Steel Castings:

• 1) Ua ntej kev daws teeb meem, nws yuav tsum tau preheated rau 650 ℃, thiab sai sai rhuab mus rau ib tug predetermined kub. Castings tseem tuaj yeem thauj mus rau hauv qhov cub thaum kub kub.
• 2) Cov kua dej kub yog feem ntau 1020-1060 ° C, thiab lub sijhawm tuav yog xam raws li qhov sib txuas ntxiv ntawm 1 teev rau txhua txhua 25 hli nce ntawm phab ntsa tuab. Rau castings nrog cov duab complex, cov khoom siv kub yuav raug txo kom txog 930 ° C.
• 3) Txhawm rau tshem tawm qhov tsis sib xws ntawm cov qauv dendritic thiab cov khoom sib cais hauv cov hlau loj loj, nws yog qhov zoo tshaj plaws los ua qhov kub thiab txias homogenization kev kho mob ua ntej kev daws teeb meem.
• 4) Qhov kub thiab txias ntawm kev laus tuaj yeem xaiv tau raws li qhov xav tau ntawm lub zog, hardness thiab toughness ntawm lub casting.
• 5) Txhawm rau txhim kho cov cuab yeej cuab tam ntawm nag lossis daus hardening stainless hlau castings, tom qab kev kho tshuaj, cua txias ntawm 700-810 ° C rau 2 teev, thiab tom qab ntawd cua txias ntawm 620 ° C rau 4 teev. Qhov no tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov castings.