Kev kho cua sov saum npoo yog hais txog cov txheej txheem ntawm kev kho cua sov tsuas yog txheej txheej ntawm cov hlau castings. Kev kho cua sov saum npoo tuaj yeem tau txais cov qauv metallographic thiab cov khoom siv kho tshuab.
Feem ntau siv cov kev kho cua sov saum npoo av yog: induction cua sov quenching, nplaim hluav taws kub quenching, laser tshav kub kho, tiv taus cua sov quenching, electrolyte quenching, mem tes cua sov kho cua sov, thiab lwm yam. Los ntawm kev kho cua sov nto, castings thiab lwm yam hlau qhov chaw yuav tau ib tug nto txheej. uas ua tau raws li qhov yuav tsum tau ua.
Tom qab cov txheej txheej txheej saum npoo tau los ntawm cov cua sov saum npoo thiab quenching, cov tub ntxhais ntawm cov casting tseem tuaj yeem tswj hwm tus thawj microstructure thiab kev ua tau zoo, thiaj li ua tiav cov kev ua tau zoo ntawm kev txhim kho qaug zog, txhim kho kev hnav tsis kam thiab tuav lub zog. Nyob rau tib lub sijhawm, kev kho cua sov saum npoo tuaj yeem txo qis kev siv hluav taws xob thiab tib lub sijhawm txo cov quenching deformation.
Induction hardening yog txheej txheem kev kho cua sov uas siv cov nyhuv tshav kub uas tsim los ntawm induction tam sim no los ntawm cov khoom ua haujlwm kom sov rau saum npoo ntawm casting, hauv zos lossis tag nrho, thiab tom qab ntawd ua kom txias sai. Lub hauv paus ntsiab lus ntawm induction cua sov yog: electromagnetic induction, daim tawv nqaij nyhuv thiab kub conduction.
Cov yam ntxwv ntawm induction cua sov quenching:
1) Induction quenching muaj superplasticity. Lub hardness ntawm lub workpiece yog 2-3 HRC siab tshaj qhov zoo tib yam quenching. Tom qab induction cua sov thiab quenching, lub martensite ntawm lub casting yog me me thiab cov carbides dispersed.
2) Qhov hnav tsis kam ntawm cov casting tom qab induction cua sov quenching yog siab dua li ntawm cov quenching zoo tib yam.
3) Vim hais tias qhov saum npoo ntawm lub workpiece yog zoo cryptocrystalline martensite thiab muaj compressive kev nyuaj siab, lub zog qaug zog ntawm lub workpiece yog zoo heev.
4) Qhov zoo ntawm lub workpiece yog ruaj khov thiab deformation me me.
5) Cov cua kub ceev ceev thiab siab thermal efficiency
6) Kev tsim khoom siab, yooj yim kom paub cov khoom siv tshuab
Post lub sij hawm: Lub Xya hli ntuj-13-2021