Cov ntsiab lus ntawm kaum feem ntau quenching txoj kev ntawm kev kub ceev quenching tshuab (2)

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% ~ 30%, thiab ces isothermally nyob rau hauv qis bainite cheeb tsam kom tau martensite thiab bainite qauv rau lub workpiece nrog loj cross-section. Alloy cuab yeej steel workpiece.

Xya, pre-txias 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 xa mus rau chav da dej nrog qhov kub siab dua kom cov austenite undergo isothermal transformation. Nws yog tsim rau steel qhov chaw uas tsis zoo hardenability los yog loj workpieces uas yuav tsum tau austempered.

Yim, qeeb txias quenching txoj kev

Txoj kev ua kom txias qeeb qeeb: Cov khoom yog pre-txias hauv huab cua, dej kub, thiab ntsev da dej kom sov me ntsis siab dua Ar3 los yog Ar1, thiab tom qab ntawd ib qho nruab nrab quenching yog ua. Nws yog feem ntau siv rau qhov chaw nrog cov duab nyuaj thiab qhov chaw nrog qhov sib txawv loj thickness thiab me me deformation yuav tsum tau.

9. quenching thiab self-tempering txoj kev

quenching self-tempering txoj kev: tshav kub tag nrho cov workpieces yuav tsum tau ua, tab sis tsuas yog raus qhov chaw uas yuav tsum tau hardened (feem ntau yog cov ua hauj lwm ib feem) nyob rau hauv lub quenching kua kom txias, thiab coj nws tawm nyob rau hauv cov huab cua thaum lub unimmersed ib feem ploj. quenching txheej txheem nrog nruab nrab txias. Txoj kev quenching self-tempering siv cov cua sov uas tsis yog tag nrho txias hauv cov tub ntxhais kom hloov mus rau qhov chaw kom npau taws rau saum npoo. Feem ntau siv rau cov cuab yeej cuam tshuam xws li chisels, xuas nrig ntaus, rauj, thiab lwm yam.

Kaum, tshuaj tsuag quenching txoj kev

Jet quenching method: Txoj kev quenching ntawm jetting dej ntws mus rau qhov chaw ua haujlwm, cov dej ntws tuaj yeem loj lossis 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, uas ua kom muaj txheej txheej tawv tawv dua li ntawm quenching hauv cov dej qub. Feem ntau yog siv rau hauv zos nto quenching.