Thaum tshav kub kub kho ntawm Martensitic Stainless hlau

(1) Annealing Lub hom phiaj ntawm annealing martensitic stainless hlau yog kom soften tus qauv thiab pab txhawb kev ua thiab sib sau. Thaum lub sij hawm annealing, txhawm rau tiv thaiv deformation, cua kub ceev yuav tsum tsis txhob ceev heev. Cov cua kub li niaj zaus yog 150 ~ 200 degree / h, thiab lub sijhawm tuav yog xam raws li cov thickness lossis txoj kab uas hla ntawm cov khoom (li 1h rau txhua 25 hli). Muaj ob hom annealing: tag nrho annealing thiab qis kub annealing. Nyob rau hauv tag nrho cov annealing, lub cua kub kub yog 800 ~ 900 degree, thiab cov cua txias yuav tsum tsawg li tsawg tau, feem ntau tsawg tshaj li 20 degree / h. Nyob rau hauv tsis tshua muaj kub annealing, cua kub kub yog hais txog 750 degree, thiab tas li cua txias yog feem ntau ua.

(2) Quenching Lub hom phiaj ntawm quenching martensitic stainless hlau yog los txhim kho lub zog thiab hardness. Nws yog ua kom sov cov hlau tsis muaj steel kom siab tshaj qhov hloov pauv kub, feem ntau 1000 ~ 1100 degree, thiab cov cua kub ib txwm yog 150 ~ 200C / h. Lub sij hawm tuav yog xam raws li thickness los yog txoj kab uas hla ntawm cov khoom, txog 1h rau txhua txhua 25 hli. Tom qab ntawd txias sai sai hauv tus neeg sawv cev quenching.
(3) Tempering Lub hom phiaj ntawm tempering martensitic stainless hlau yog los txhim kho toughness thiab tshem tawm cov kev ntxhov siab sab hauv. Lub stainless hlau yog rhuab mus rau hauv qab ntawm theem hloov kub. Cov cua kub feem ntau yog 150 ~ 200 degree / h. Lub sij hawm tuav yog xam raws li thickness los yog txoj kab uas hla ntawm cov khoom (txog 25 hli tuav rau 1h), thiab ces cua txias yog siv.

Qhov tseeb, kev kho cua sov ntawm martensitic stainless hlau yog tib yam li cov qauv hlau. Piv txwv li: thaum siv nyob rau hauv high-strength structural qhov chaw, nws yuav tsum tau tempered; Thaum siv cov khoom caij nplooj ntoos hlav, nws yuav tsum tau quenched thiab tempered ntawm nruab nrab kub.