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

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

Cov yeeb nkab hlau raug cua sov rau qhov kub thiab txias, yog li ntawd cov qauv sab hauv ntawm cov yeeb nkab hlau raug hloov mus ua austenite, thiab tom qab ntawd txias sai dua li qhov ceev quenching tseem ceeb, yog li ntawd cov qauv sab hauv ntawm cov yeeb nkab hlau raug hloov mus ua martensite, thiab tom qab ntawd tempered nrog qhov kub siab, thaum kawg, cov qauv yeeb nkab hlau raug hloov mus ua cov khoom siv tempered sopranite. Cov txheej txheem no tsis tsuas yog txhim kho lub zog thiab qhov nyuaj ntawm cov yeeb nkab hlau, tab sis kuj tseem ua ke lub zog, plasticity thiab toughness ntawm cov yeeb nkab hlau.

2, normalizing (tseem hu ua normalizing)

Tom qab ua kom cov yeeb nkab hlau sov mus txog qhov kub thiab txias, cov qauv sab hauv ntawm cov yeeb nkab hlau raug hloov pauv mus ua cov qauv austenite, thiab tom qab ntawd cov txheej txheem kho cua sov raug txias nrog cua ua qhov nruab nrab. Tom qab ua kom zoo li qub, cov qauv hlau sib txawv tuaj yeem tau txais, xws li pearlite, bainite, martensite, lossis sib xyaw ntawm lawv. Cov txheej txheem no tsis tsuas yog ua kom cov noob zoo nkauj, sib xyaw ua ke, tshem tawm kev ntxhov siab, tab sis kuj txhim kho qhov nyuaj ntawm cov yeeb nkab hlau thiab nws cov kev ua tau zoo.

Kev kho kom zoo + kev kho kom sov

Lub raj hlau raug cua sov rau qhov kub thiab txias, yog li ntawd cov qauv sab hauv ntawm lub raj hlau raug hloov pauv mus rau hauv cov qauv austenite, thiab tom qab ntawd txias hauv huab cua, thiab tom qab ntawd tempered. Cov qauv ntawm cov yeeb nkab hlau yog tempered ferrite + pearlite, lossis ferrite + bainite, lossis tempered bainite, lossis tempered martensite, lossis tempered sortensite. Cov txheej txheem tuaj yeem ruaj khov cov qauv sab hauv ntawm cov yeeb nkab hlau thiab txhim kho nws cov yas thiab tawv.

4, kev ua kom sov

Nws yog ib qho txheej txheem kho cua sov uas lub raj hlau raug cua sov rau qhov kub thiab khaws cia rau ib lub sijhawm, thiab tom qab ntawd txias mus rau ib qho kub nrog lub cub tawg. Txo qhov nyuaj ntawm cov yeeb nkab hlau, txhim kho nws cov yas, los pab txhawb kev txiav tom qab lossis kev ua kom txias deformation; Ua kom cov noob zoo, tshem tawm cov teeb meem microstructure, cov qauv sab hauv thiab cov khoom sib xws, txhim kho kev ua tau zoo ntawm cov yeeb nkab hlau lossis npaj rau cov txheej txheem tom ntej; Tshem tawm kev ntxhov siab sab hauv ntawm cov yeeb nkab hlau kom tiv thaiv kev hloov pauv lossis tawg.

5. Kev kho tshuaj

Lub raj hlau raug cua sov rau qhov kub ntawm cov tshuaj, yog li ntawd cov carbides thiab cov khoom sib xyaw ua ke tau yaj tag nrho thiab sib npaug hauv austenite, thiab tom qab ntawd lub raj hlau tau txias sai, yog li cov pa roj carbon thiab cov khoom sib xyaw ua ke tsis muaj sijhawm los nag, thiab cov txheej txheem kho cua sov ntawm cov qauv austenite ib leeg tau txais. Kev ua haujlwm ntawm cov txheej txheem: cov qauv sab hauv ntawm cov yeeb nkab hlau, cov khoom sib xyaw ua ke ntawm cov yeeb nkab hlau; Tshem tawm cov tawv hauv cov txheej txheem ntawm kev ua kom yooj yim rau kev ua cov txheej txheem txias tom qab; Rov qab kho qhov tsis kam ntawm cov hlau tsis xeb.