Tempering yog txheej txheem kev kho cua sov uas lub workpiece yog quenched thiab rhuab mus rau qhov kub hauv qab Ac1 (qhov pib kub rau pearlite rau austenite transformation thaum cua sov), tuav rau ib lub sij hawm ntawm lub sij hawm, thiab ces txias rau chav tsev kub.
Tempering feem ntau ua raws li quenching, nrog lub hom phiaj ntawm:
(a) Tshem tawm cov kev ntxhov siab uas tshwm sim thaum lub sijhawm ua haujlwm quenching los tiv thaiv deformation thiab tawg;
(b) Kho lub hardness, lub zog, plasticity, thiab toughness ntawm workpiece kom tau raws li qhov yuav tsum tau rau kev siv;
(c) Lub koom haum ruaj khov thiab qhov loj me, kom ntseeg tau qhov tseeb;
(d) Txhim kho thiab txhim kho kev ua haujlwm. Yog li ntawd, tempering yog txheej txheem tseem ceeb kawg kom tau txais qhov kev ua tau zoo ntawm lub workpiece. Los ntawm kev sib txuas quenching thiab tempering, cov khoom siv kho tshuab yuav tsum tau. [2]
Raws li qhov kub ntawm qhov kub thiab txias, tempering tuaj yeem muab faib ua qhov kub thiab txias, nruab nrab kub tempering, thiab kub tempering.
Tempering kev faib tawm
Tsawg kub tempering
Tempering ntawm lub workpiece ntawm 150-250 °
Lub hom phiaj yog kom muaj lub siab tawv thiab hnav tsis kam ntawm quenched workpieces, txo qhov seem seem thiab brittleness thaum quenching
Tempered martensite tau tom qab tempering yog hais txog lub microstructure tau thaum lub sij hawm kub kub ntawm quenched martensite. Mechanical zog: 58-64HRC, siab hardness thiab hnav tsis kam.
Daim ntawv thov: Feem ntau yog siv nyob rau hauv ntau hom high carbon steel cov cuab yeej, txiav cov cuab yeej, ntsuas cov cuab yeej, pwm, dov bearings, carburized thiab nto quenched qhov chaw, thiab lwm yam. [1]
Nruab nrab kub tempering
Tempering ntawm lub workpiece ntawm 350 thiab 500 ℃.
Lub hom phiaj yog kom ua tiav siab elasticity thiab tawm los taw tes, nrog tsim nyog toughness. Tom qab tempering, tempered troostite tau txais, uas yog hais txog lub duplex qauv ntawm ferrite matrix tsim thaum lub sij hawm martensite tempering, qhov uas tsis tshua muaj me me kheej kheej carbides (los yog cementite's) raug faib nyob rau hauv lub matrix.
Mechanical zog: 35-50HRC, siab elastic txwv, yield point, thiab tej yam toughness.
Daim ntawv thov Scope: feem ntau yog siv rau springs, springs, forging tuag, tej cuab yeej, thiab lwm yam. [1]
Kub kub tempering
Tempering ntawm workpieces siab tshaj 500 ~ 650 ℃.
Lub hom phiaj yog kom tau txais cov khoom siv kho tshuab zoo nrog lub zog zoo, plasticity, thiab toughness.
Tom qab tempering, tempered sorbite yog tau, uas yog hais txog lub duplex qauv ntawm ferrite matrix tsim thaum lub sij hawm martensite tempering, qhov chaw me me spherical carbides (xws li cementite) raug faib nyob rau hauv lub matrix.
Cov khoom siv kho tshuab: 25-35HRC, nrog cov khoom zoo txhua yam.
Daim ntawv thov Scope: Dav siv rau ntau yam tseem ceeb load-bearing structural Cheebtsam, xws li txuas rods, bolts, gears, thiab ncej qhov chaw.
Cov txheej txheem kev kho cua sov ntawm cov khoom ua haujlwm quenching thiab high-temperature tempering yog hu ua quenching thiab tempering. quenching thiab tempering tsis tsuas yog siv rau kev kho cua sov zaum kawg, tab sis kuj rau kev kho cua sov ua ntej ntawm qee qhov precision lossis induction quenched qhov chaw.
Email:oiltools14@welongpost.com
Grace Ma
Post lub sij hawm: Nov-03-2023
