Muaj kaum feem ntau siv quenching txoj hauv kev kho cua sov, nrog rau ib qho nruab nrab (dej, roj, cua) quenching; dual nruab nrab quenching; martensite qib quenching; martensite graded quenching txoj hauv qab Ms point; bainite isothermal quenching txoj kev; txoj kev sib xyaw quenching; precooling isothermal quenching txoj kev; ncua txias quenching txoj kev; quenching tus kheej-tempering txoj kev; tshuaj tsuag quenching txoj kev, thiab lwm yam.
1. Ib qho nruab nrab (dej, roj, cua) quenching
Ib qho nruab nrab (dej, roj, cua) quenching: Lub workpiece uas tau rhuab mus rau lub quenching kub yog quenched rau hauv ib tug quenching nruab nrab kom txias nws tag. Qhov no yog txoj kev yooj yim tshaj plaws quenching 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, hardenability, loj, zoo, thiab lwm yam.
2. Ob chav nruab nrab quenching
Dual-nruab nrab quenching: Lub workpiece rhuab mus rau lub quenching kub yog thawj zaug txias kom ze rau lub Ms point nyob rau hauv ib tug quenching nruab nrab uas muaj zog txias peev xwm, thiab ces pauv mus rau ib tug qeeb-txias quenching nruab nrab kom txias rau chav tsev kub kom ncav cuag sib txawv quenching txias. Qhov kub thiab txias muaj qhov zoo tshaj plaws quenching txias tus nqi. Txoj kev no feem ntau yog siv rau qhov chaw nrog cov duab nyuaj lossis cov khoom loj ua los ntawm cov pa roj carbon siab thiab cov hlau alloy. Cov cuab yeej carbon hlau kuj tau siv ntau zaus. Feem ntau siv cov khoom cua txias xws li dej-roj, dej-nitrate, dej-cua, thiab roj-cua. Feem ntau, dej yog siv los ua qhov txias txias quenching nruab nrab, thiab roj los yog cua yog siv los ua qhov txias txias quenching nruab nrab. 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 Martensite taw tes ntawm cov hlau, thiab khaws cia rau lub sij hawm tsim nyog kom txog rau thaum lub puab thiab Tom qab cov khaubncaws sab nraud povtseg mus txog qhov nruab nrab kub, lawv raug tshem tawm rau cua txias, thiab lub supercooled austenite maj mam hloov mus rau hauv martensite thaum lub sij hawm quenching txheej txheem. Nws feem ntau yog siv rau me me workpieces nrog complex duab thiab nruj deformation yuav tsum tau. Txoj kev no kuj yog siv rau quenching high-speed steel thiab high-alloy steel cov cuab yeej thiab pwm.
4. Martensite graded quenching method hauv qab Ms point
Martensite 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 cov txiaj ntsig tib yam li graded quenching tseem tuaj yeem tau txais thaum qhov loj dua. Feem ntau siv rau steel workpieces loj nrog tsawg hardenability.
5. Bainite isothermal quenching txoj kev
Bainite isothermal quenching txoj kev: Lub workpiece yog quenched rau hauv da dej nrog ib tug qis bainite kub ntawm cov hlau thiab isothermal, thiaj li hais tias lub qis bainite transformation tshwm sim, thiab feem ntau yog khaws cia nyob rau hauv da dej rau 30 mus rau 60 feeb. Cov txheej txheem bainite austempering muaj peb kauj ruam tseem ceeb: ① kho austenitizing; ② tom qab austenitizing txias kho; ③ bainite isothermal kev kho mob; feem ntau siv nyob rau hauv alloy steel, siab carbon steel me me qhov chaw thiab ductile hlau castings.
6. Compound quenching txoj kev
Compound quenching txoj kev: ua ntej quench lub workpiece mus rau hauv qab Ms kom tau martensite nrog ib feem ntawm 10% mus rau 30%, thiab ces isotherm nyob rau hauv qis bainite cheeb tsam kom tau martensite thiab bainite lug rau loj cross-section workpieces. Nws yog feem ntau siv Alloy cuab yeej steel workpieces.
7. Precooling thiab isothermal quenching txoj kev
Pre-cooling isothermal quenching method: tseem hu ua cua sov isothermal quenching, cov khoom yog thawj zaug txias hauv chav da dej nrog qhov kub thiab txias (ntau dua Ms), thiab tom qab ntawd hloov mus rau chav da dej nrog qhov kub siab dua ua rau austenite mus rau isothermal transformation. Nws yog tsim rau steel qhov chaw uas tsis zoo hardenability los yog loj workpieces uas yuav tsum tau austempered.
8. Ncua txias thiab quenching txoj kev
Txoj kev ua kom txias qeeb qeeb: Cov khoom yog thawj zaug ua ntej txias hauv huab cua, dej kub, lossis ntsev da dej kom sov me ntsis siab dua Ar3 lossis Ar1, thiab tom qab ntawd ua ib qho nruab nrab quenching. Nws yog feem ntau siv rau qhov chaw nrog cov duab complex thiab dav sib txawv thicknesses nyob rau hauv ntau qhov chaw thiab yuav tsum tau me me deformation.
9. quenching thiab self-tempering txoj kev
quenching thiab self-tempering txoj kev: Tag nrho cov workpiece yuav tsum tau ua kom sov, tab sis thaum lub sij hawm quenching, tsuas yog ib feem uas yuav tsum tau hardened (feem ntau yog qhov chaw ua hauj lwm) yog immersed nyob rau hauv lub quenching kua thiab txias. Thaum cov xim hluav taws kub ntawm qhov tsis sib haum xeeb ploj mus, tam sim ntawd coj nws tawm hauv huab cua. Nruab nrab txias quenching txheej txheem. Txoj kev quenching thiab self-tempering txoj kev siv cov cua sov los ntawm cov tub ntxhais uas tsis yog tag nrho txias kom hloov 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 ib zaj duab xis rau ntawm qhov chaw ntawm lub workpiece, yog li ua kom cov txheej txheej sib sib zog nqus dua li dej quenching. Feem ntau yog siv rau hauv zos nto quenching.
Post lub sij hawm: Apr-08-2024