Cov ntsiab lus ntawm kaum feem ntau siv quenching txoj kev
Muaj kaum feem ntau siv quenching txoj hauv kev kho cua sov, uas yog, ib qho nruab nrab (dej, roj, cua) quenching; dual nruab nrab quenching; martensite qib quenching; martensite graded quenching hauv qab Ms point; bainite isothermal quenching txoj kev; txoj kev sib xyaw quenching; pre-txias isothermal quenching txoj kev; ncua txias quenching txoj kev; quenching tus kheej-tempering txoj kev; spray quenching method, thiab lwm yam.
1. Ib qho nruab nrab (dej, roj, cua) quenching
Ib qho nruab nrab (dej, roj, cua) quenching: quenching lub workpiece uas tau rhuab mus rau lub quenching kub rau hauv ib tug quenching nruab nrab kom nws txias tag. Qhov no yog txoj kev quenching yooj yim tshaj plaws thiab feem ntau yog siv rau cov pa roj carbon steel thiab alloy steel workpieces nrog cov duab yooj yim. Qhov nruab nrab quenching yog xaiv raws li lub tshav kub hloov coefficient ntawm ib feem, hardenability, loj, zoo, thiab lwm yam.
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2. Dual-nruab nrab quenching
Dual-nruab nrab quenching: Lub workpiece rhuab mus rau lub quenching kub yog thawj zaug txias nyob rau hauv ib tug quenching nruab nrab nrog muaj zog txias muaj peev xwm mus ze rau lub Ms point, thiab ces pauv mus rau ib tug qeeb-txias quenching nruab nrab kom txias rau chav tsev kub kom ua tau txawv quenching txias. qhov kub thiab txias, thiab muaj qhov zoo tshaj plaws quenching txias tus nqi. Nws yog siv rau cov khoom siv los yog cov khoom loj ua los ntawm cov pa roj carbon siab thiab cov hlau alloy, thiab cov cuab yeej carbon steel kuj tau siv txoj kev no. Feem ntau siv cov khoom cua txias yog dej-roj, dej-nitrate, dej-cua, roj-cua, dej feem ntau yog siv los ua lub tshuab cua txias ceev ceev, roj los yog cua siv los ua cua txias quenching nruab nrab, thiab cua tsis tshua siv.
3. Martensite qib quenching
Martensitic graded quenching: cov hlau yog austenitized, thiab tom qab ntawd muab tso rau hauv cov kua nruab nrab (ntsev da dej los yog alkali da dej) nrog qhov kub thiab txias me ntsis los yog qis dua lub Martensitic taw tes ntawm cov hlau, thiab khaws cia rau lub sijhawm tsim nyog los kho sab hauv. thiab sab nraum cov hlau. Tom qab txheej txheej mus txog qhov kub ntawm qhov nruab nrab, nws raug tshem tawm thiab cua txias, thiab supercooled austenite maj mam hloov mus rau hauv cov txheej txheem quenching ntawm martensite. Nws feem ntau yog siv rau me me workpieces nrog complex duab thiab nruj deformation yuav tsum tau. High-speed steel thiab high-alloy steel cov cuab yeej thiab pwm kuj feem ntau quenched los ntawm txoj kev no.
4. Martensite graded quenching method hauv qab Ms point
Martensitic graded graded quenching method hauv qab Ms point: Thaum lub da dej kub qis dua Ms ntawm lub workpiece steel thiab siab dua Mf, lub workpiece txias sai dua nyob rau hauv da dej, thiab tib yam li graded quenching tseem tuaj yeem tau txais thaum qhov loj me. loj dua. Feem ntau siv rau qhov loj me me uas tsis muaj hardenability steel workpieces.
Tsib, bainite isothermal quenching txoj kev
Bainite isothermal quenching txoj kev: Quench lub workpiece rau hauv da dej ntawm qhov qis bainite kub ntawm cov hlau thiab isothermally, thiaj li hais tias lub qis bainite transformation tshwm sim, thiab feem ntau cia nws nyob rau hauv da dej rau 30 ~ 60min. Muaj peb kauj ruam tseem ceeb hauv cov txheej txheem bainite austempering: ① kho austenitizing; ② txias kev kho mob tom qab austenitizing; ③ bainite isothermal kev kho mob; Feem ntau siv nyob rau hauv me me qhov chaw ntawm alloy steel, siab carbon steel thiab ductile hlau castings.
6. Composite quenching txoj kev
Composite quenching txoj kev: ua ntej sai txias lub workpiece mus rau hauv qab Ms kom tau martensite nrog ib tug ntim feem ntawm 10 feem pua ~ 30 feem pua, thiab ces isothermal nyob rau hauv qis bainite cheeb tsam kom tau martensite thiab bainite lug rau loj cross-section workpieces. Alloy cuab yeej steel workpieces.
Xya, pre-txias isothermal quenching txoj kev
Pre-txias isothermal quenching txoj kev: tseem hu ua elevated kub isothermal quenching, qhov chaw yog thawj zaug txias nyob rau hauv ib da dej nrog ib tug qis kub (ntau tshaj Ms), thiab ces pauv mus rau ib tug da dej nrog ib tug kub kub kom lub austenite undergo isothermal transformation. . Nws yog tsim rau steel qhov chaw uas tsis zoo hardenability los yog workpieces nrog loj qhov ntev uas yuav tsum tau austempered.
8. Ncua txias thiab quenching txoj kev
Ua kom txias txias thiab quenching txoj kev: Cov khoom yog pre-txias hauv huab cua, dej kub, thiab ntsev da dej rau qhov kub thiab txias me ntsis siab tshaj Ar3 los yog Ar1, thiab tom qab ntawd ib qho nruab nrab quenching. Nws yog feem ntau siv rau qhov chaw nrog cov duab complex, txawv thicknesses thiab me me deformation yuav tsum tau.
Cuaj, quenching self-tempering txoj kev
quenching thiab self-tempering txoj kev: cua sov tag nrho cov workpiece yuav tsum tau ua, tab sis tsuas yog raus qhov chaw uas yuav tsum tau hardened (feem ntau yog ib feem ua hauj lwm) rau hauv lub quenching kua kom txias thaum quenching, thiab tshem tawm tam sim ntawd nyob rau hauv cov huab cua thaum lub hluav taws xim ntawm unimmersed ib feem disappears. Nruab nrab txias quenching txheej txheem. Txoj kev quenching self-tempering siv cov cua sov uas tsis yog tag nrho txias los ntawm cov tub ntxhais mus rau qhov chaw kom temper nto. Cov cuab yeej feem ntau siv los tiv thaiv kev cuam tshuam xws li chisels, punches, rauj, thiab lwm yam.
10. Txau quenching txoj kev
Spray quenching method: Ib txoj kev quenching uas dej yog txau rau ntawm qhov chaw ua haujlwm. Cov dej ntws tuaj yeem loj lossis me me, nyob ntawm qhov xav tau quenching qhov tob. Txoj kev tshuaj tsuag quenching tsis tsim cov yeeb yaj kiab vapor rau ntawm qhov chaw ua haujlwm, kom nws tuaj yeem ua kom cov txheej txheem sib sib zog nqus dua li yav dhau los quenching hauv dej. Feem ntau yog siv rau ib nrab nto quenching
