Cov txheej txheem kev kho cua sov ntawm cov yeeb nkab steel feem ntau suav nrog 5 pawg hauv qab no:

1, quenching + kub tempering (tseem hu ua quenching thiab tempering)

Lub steel yeeb nkab yog rhuab mus rau lub quenching kub, thiaj li hais tias lub internal qauv ntawm cov yeeb nkab steel yog hloov mus rau hauv austenite, thiab ces txias sai tshaj qhov tseem ceeb quenching ceev, thiaj li hais tias lub internal qauv ntawm cov yeeb nkab steel yog hloov mus rau hauv martensite, thiab ces tempered nrog high kub, thaum kawg, steel yeeb nkab qauv yog hloov mus rau hauv uniform tempered sopranite. thiab toughness ntawm steel yeeb nkab.

2, normalizing (tseem hu ua normalizing)

Tom qab cua sov cov yeeb nkab steel rau normalizing kub, cov txheej txheem sab hauv ntawm cov yeeb nkab steel tau hloov pauv mus rau hauv cov qauv austenite, thiab tom qab ntawd cov txheej txheem kev kho cua sov yog txias nrog cua raws li qhov nruab nrab.Tom qab normalizing, cov hlau sib txawv tuaj yeem tau txais, xws li pearlite, bainite, martensite, los yog sib tov ntawm lawv. Cov txheej txheem no tuaj yeem tsis tsuas yog refine grain, uniform composition, tshem tawm cov yeeb nkab nyuaj, tab sis kuj txhim kho cov yeeb nkab.

Normalizing + tempering

Lub raj steel yog rhuab mus rau lub normalizing kub, thiaj li hais tias lub internal qauv ntawm lub steel raj yog kiag li hloov mus rau hauv austenite qauv, thiab ces txias nyob rau hauv cov huab cua, thiab ces tempered.Cov qauv ntawm steel yeeb nkab yog tempered ferrite + pearlite, los yog ferrite + bainite, los yog tempered bainite, los yog tempered martensite, los yog tempered steel txheej txheem. txhim kho nws cov plasticity thiab toughness.

4 ,nqi

Nws yog cov txheej txheem kev kho cua sov uas cov raj hlau tau rhuab rau qhov kub thiab txias thiab khaws cia rau ib lub sijhawm, thiab tom qab ntawd txias mus rau qhov kub thiab txias nrog rau qhov cub, txo qhov hardness ntawm cov yeeb nkab steel, txhim kho nws cov yas, los pab txhawb kev txiav tom qab los yog txias deformation processing; Refine grain, tshem tawm microstructure defects, uniform internal qauv thiab muaj pes tsawg leeg, txhim kho cov txheej txheem ntawm cov yeeb nkab steel. los tiv thaiv deformation los yog tawg.

5. Kev kho mob

Lub raj steel yog rhuab mus rau qhov kub thiab txias, thiaj li hais tias carbides thiab alloying ntsiab yog tag nrho thiab uniformly yaj nyob rau hauv austenite, thiab ces cov hlau raj yog txias sai sai, thiaj li hais tias carbon thiab alloying ntsiab tsis muaj sij hawm los nag, thiab cov txheej txheem kev kho cua sov ntawm ib tug austenite qauv yog tau. txias deformation ua; Restore lub corrosion kuj ntawm stainless hlau.