1. Normalization: Cov txheej txheem kev kho cua sov ntawm cov cua sov steel los yog cov hlau qhov chaw mus rau qhov tseem ceeb Ac3 (rau hypoeutectoid steel) los yog Accm (rau hypereutectoid steel) saum toj 30℃-50 degree, tuav rau lub sijhawm tsim nyog, thiab cov cua txias tsis sib xws hauv cov huab cua tsis huv yog hu ua normalization.
Lub microstructure tom qab normalizing: hypoeutectoid steel yog F + S, eutectoid steel yog S, thiab hypereutectoid steel yog S + Fe3CII. Qhov sib txawv tseem ceeb ntawm normalizing thiab ua tiav annealing yog tias qhov txias txias yog sai dua, nrog rau lub hom phiaj ntawm normalizing cov qauv steel, tseem hu ua normalizing kho.
2. Annealing: Cov txheej txheem kev kho cua sov uas cov khoom ua haujlwm hypoeutectoid steel yog rhuab mus rau 20-40 degrees saum AC3, tuav rau ib lub sij hawm, thiab maj mam txias rau hauv lub cub tawg (los yog faus rau hauv xuab zeb los yog txiv qaub) kom qis dua 500 degrees thiab txias hauv huab cua.
3. Cov khoom siv hluav taws xob kho cua sov: cua sov cov hlau mus rau qhov kub siab ib zaug -theem cheeb tsam thiab tswj qhov kub thiab txias kom tag nrho cov txheej txheem ntau dhau mus rau hauv cov tshuaj tov, ces txias txias kom tau txais cov tshuaj supersaturated.
4. Kev laus: Qhov tshwm sim nyob rau hauv uas cov khoom ntawm ib tug alloy hloov lub sij hawm thaum nws muab tso rau ntawm chav tsev kub los yog me ntsis saum toj no chav tsev kub tom qab kev kho cua sov los yog txias yas deformation.
5. Cov khoom siv kho mob: siab yaj ntau theem hauv cov hlau, ntxiv dag zog rau cov khoom siv, txhim kho toughness thiab corrosion kuj, tshem tawm kev ntxhov siab thiab softening, thiaj li mus txuas ntxiv ua thiab tsim.
6. Lub sij hawm kho: cua sov thiab tuav ntawm qhov kub thiab txias qhov twg lub zog theem precipitates, tso cai rau lub zog theem kom precipitate thiab harden, yog li txhim kho lub zog.
7. Quenching: txheej txheem kev kho cua sov uas austenitizes hlau thiab txias nws ntawm qhov tsim nyog txias tus nqi, ua rau lub workpiece mus rau unstable structural transformations xws li martensite nyob rau hauv tag nrho los yog ib tug tej yam ntau yam ntawm tus ntoo khaub lig-section
8. Tempering: txheej txheem kev kho cua sov uas ua kom sov quenched workpieces mus rau qhov tsim nyog kub hauv qab lub ntsiab lus tseem ceeb AC1 thiab tswj nws rau qee lub sijhawm, ua raws li kev ua kom txias siv ib txoj hauv kev kom tau txais cov qauv thiab cov khoom uas xav tau.
9. Carbonitriding ntawm hlau: Carbonitriding yog txheej txheem ntawm ib txhij infiltrating carbon thiab nitrogen rau saum npoo ntawm hlau. Kev lig kev cai, carbonitriding, tseem hu ua cyanide, yog dav siv nyob rau hauv nruab nrab kub gas carbonitriding thiab qis -kub roj carbonitriding (xws li roj nitriding). Lub hom phiaj tseem ceeb ntawm nruab nrab kub roj carbonitriding yog los txhim kho hardness, hnav tsis kam, thiab qaug zog lub zog ntawm steel. Tsawg kub roj carbonitriding feem ntau cuam tshuam nrog nitriding, nrog rau lub hom phiaj tseem ceeb ntawm kev txhim kho cov hnav tsis kam thiab tom cov hlau.
10. quenching thiab tempering kev kho mob: Nws yog feem ntau ib txwm ua ke quenching nrog siab -kub tempering rau kev kho cua sov, uas yog hu ua quenching thiab tempering kev kho mob. 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 martensite qauv tau txais, thiab nws cov khoom siv kho tshuab zoo dua rau cov qauv ntawm cov qauv martensite nrog tib lub zog. Nws hardness nyob ntawm qhov siab -kub tempering kub thiab muaj feem xyuam rau tempering stability ntawm steel thiab tus ntoo khaub lig-sectional loj ntawm lub workpiece, feem ntau ntawm HB200-350.
11. Brazing: Ib txheej txheem kev kho cua sov uas ob hom workpieces raug sib koom ua ke siv cov khoom siv brazing
