Muaj ntau hom kev kho cua sov

1. Normalizing:
Cov txheej txheem kev kho cua sov uas cov hlau los yog cov hlau yog rhuab mus rau qhov kub thiab txias tshaj qhov tseem ceeb ntawm AC3 lossis ACM, khaws cia rau qee lub sijhawm, thiab tom qab ntawd txias hauv huab cua kom tau txais cov qauv zoo li pearlite.

2. Annealing:
Cov txheej txheem kev kho cua sov uas cov khoom ua haujlwm hypoeutecoid yog rhuab mus rau 20-40 degrees saum AC3, cia sov rau ib lub sij hawm, thiab maj mam txias rau hauv lub cub tawg (los yog faus rau hauv xuab zeb los yog txias hauv txiv qaub) kom qis dua 500 degrees hauv huab cua.

3. Khoom siv hluav taws xob kho cua sov:
Kev kho cua sov txheej txheem uas cov hlau yog rhuab mus rau qhov kub thiab txias thiab tswj ntawm qhov kub thiab txias nyob rau hauv ib-theem cheeb tsam kom tag nrho yaj lub sij hawm dhau mus rau hauv cov khoom tov, thiab ces txias sai heev kom tau ib tug supersaturated khoom tov.

4. Kev laus:
Tom qab cov hlau tau dhau los ua cov khoom siv kho cua sov los yog cov yas txias deformation, nws cov khoom hloov nrog lub sij hawm thaum nws muab tso rau hauv chav tsev kub los yog me ntsis saum chav tsev kub.

5. Kev kho cov kuab tshuaj:
tag nrho yaj ntau theem nyob rau hauv lub alloy, ntxiv dag zog rau cov khoom tov thiab txhim kho toughness thiab corrosion kuj, tshem tawm kev ntxhov siab thiab softening, thiaj li mus txuas ntxiv ua thiab tsim.

6. Kev laus kev kho mob:
Cua sov thiab tuav ntawm qhov kub thiab txias qhov twg lub zog theem precipitates, kom lub zog theem precipitates thiab hardens, txhim kho lub zog.

7. Quenching:
Cov txheej txheem kev kho cua sov uas cov hlau yog austenitized thiab tom qab ntawd txias ntawm qhov tsim nyog txias kom lub workpiece tsis ruaj khov hloov pauv xws li martensite nyob rau hauv tag nrho los yog nyob rau hauv ib tug tej thaj tsam ntawm tus ntoo khaub lig seem.

8. Tempering:
Cov txheej txheem kev kho cua sov uas cov quenched workpiece yog rhuab mus rau qhov tsim nyog kub hauv qab lub ntsiab lus tseem ceeb AC1 rau ib lub sij hawm ntawm lub sij hawm, thiab tom qab ntawd txias siv ib txoj kev uas ua tau raws li qhov yuav tsum tau ua kom tau cov qauv thiab cov khoom.

9. Carbonitriding ntawm hlau:
Carbonitriding yog txheej txheem ntawm ib txhij infiltrating carbon thiab nitrogen rau hauv txheej txheej ntawm hlau. Kev lig kev cai, carbonitriding tseem hu ua cyanidation. Tam sim no, nruab nrab-kub roj carbonitriding thiab low-temperature gas carbonitriding (ie, roj soft nitriding) yog dav siv. Lub hom phiaj tseem ceeb ntawm nruab nrab kub roj carbonitriding yog los txhim kho hardness, hnav tsis kam thiab qaug zog ntawm steel. Tsawg-kub roj carbonitriding feem ntau yog nitriding, thiab nws lub hom phiaj tseem ceeb yog los txhim kho cov hnav tsis kam thiab qaug dab peg ntawm cov hlau.

10. Quenching thiab tempering:
Nws feem ntau yog kev cai los ua ke quenching thiab high-temperature tempering raws li kev kho cua sov hu ua quenching thiab tempering. quenching thiab tempering kev kho mob yog dav siv nyob rau hauv ntau yam tseem ceeb yam ntxwv qhov chaw, tshwj xeeb tshaj yog cov txuas rods, bolts, gears thiab shafts uas ua hauj lwm nyob rau hauv alternating loads. Tom qab quenching thiab tempering kho, tempered sorbite qauv tau txais, thiab nws cov khoom siv kho mob zoo dua li cov qauv ntawm cov qauv sorbite zoo tib yam. Nws hardness nyob ntawm qhov kub thiab txias tempering thiab muaj feem xyuam rau lub tempering stability ntawm cov hlau thiab lub cross-sectional loj ntawm workpiece, feem ntau ntawm HB200-350.

11. Brazing:
Cov txheej txheem kev kho cua sov uas siv cov khoom siv brazing los khi ob lub workpieces ua ke.