Ua ntej, preheating:
1. Rau lub workpiece nrog complex zoo los yog ntse hla ntu hloov thiab loj zoo thickness, nws yuav tsum tau preheated.
2. Cov txheej txheem ntawm preheating yog: preheating rau 800 ℃, theem nrab preheating yog 500 ~ 550 ℃ thiab 850 ℃, qhov kub nce tus nqi ntawm thawj preheating yuav tsum tau txwv.
Ob, cua sov:
1. Muaj cov thais thiab qhov nyob rau hauv lub workpiece, casting thiab vuam qhov chaw thiab ua tiav stainless hlau workpiece, feem ntau tsis nyob rau hauv lub ntsev da dej rauv cua sov.
2. Xyuas kom meej tias lub workpiece yog rhuab rau lub sij hawm txaus. Xam qhov ua tau zoo ntawm lub workpiece thiab cov thickness raws li txoj cai (qhov tseeb thickness multiplied los ntawm workpiece zoo coefficient) los ntawm kev xa mus rau Table 5-16 thiab Table 5-17
Peb, tu:
1. Lub workpiece thiab fixture yuav tsum tau tshem ntawm cov roj, residual ntsev, xim thiab lwm yam txawv teb chaws khoom ua ntej kev kho cua sov.
2. Lub fixture siv thawj zaug nyob rau hauv lub tshuab nqus tsev rauv yuav tsum tau degassed thiab purified ua ntej yam tsawg kawg nkaus nyob rau hauv lub nqus tsev kawm ntawv xav tau los ntawm lub workpiece.
Plaub, rauv loading:
1. Nyob rau hauv cov txheej txheem ntawm kev kho cua sov, lub deformable workpiece yuav tsum tau rhuab rau ib tug tshwj xeeb fixture
2. Lub workpiece yuav tsum tau muab tso rau hauv ib qho chaw cua sov zoo