Sinter hardening hauv MIM

Sinter Hardening yog dab tsi?

Sinter hardening yog txheej txheem uas ua rau kev hloov pauv martensite thaum lub caij txias ntawm lub voj voog sintering.

Qhov ntawd yog sintering thiab kev kho cua sov ntawm cov hmoov metallurgy cov ntaub ntawv tau muab tso rau hauv ib txheej txheem, kom cov txheej txheem tsim cov khoom siv tau zoo dua thiab cov txiaj ntsig kev lag luam zoo dua.

Cov yam ntxwv ntawm sinter hardening:

1) Hlau plasticity tau zoo heev.Yav dhau los, npib tsib xee-raws li alloys uas tsuas yog tsim los ntawm casting tab sis tsis tuaj yeem tsim los ntawm forging kuj tuaj yeem tsim los ntawm sinter hardening tuag forging, yog li nthuav cov hom forgeable hlau.

2) Lub deformation tsis kam ntawm hlau yog tsawg heev.Feem ntau, tag nrho cov siab ntawm sinter-hardening tuag forging tsuas yog ib feem rau ib feem kaum ntawm qhov zoo tib yam tuag forging.Yog li ntawd, loj tuag forging tuaj yeem ua rau cov khoom siv nrog me me tonnage.

3) Kev ua haujlwm siab ua haujlwm Sintering hardening txoj kev ua tiav tuaj yeem tau txais cov phab ntsa nyias nyias nrog qhov loj me, cov duab zoo, cov qauv zoo li qub, cov khoom siv tsis sib xws, cov nyiaj siv me me, thiab tuaj yeem siv txawm tias tsis muaj kev txiav.Yog li ntawd, sinter-hardening forming yog ib txoj hauv kev tshiab kom ua tiav tsawg los yog tsis muaj kev txiav thiab precision sib sau.

Cov yam ntxwv cuam tshuam ntawm sinter hardening feem ntau suav nrog:Alloying cov ntsiab lus, txias tus nqi, ceev, cov ntsiab lus carbon.

Qhov cua txias ntawm sinter hardening yog 2 ~ 5 ℃ / s, thiab qhov txias txias yog ceev txaus kom ua rau lub martensite hloov pauv hauv cov khoom.Yog li ntawd, kev siv cov txheej txheem sinter hardening tuaj yeem txuag cov txheej txheem carburizing tom ntej.

Kev xaiv khoom siv:
Sinter hardening yuav tsum tau tshwj xeeb hmoov.Feem ntau, muaj ob hom hlau-raws li hmoov metallurgy cov ntaub ntawv, uas yog:

1) Elemental hmoov sib xyaw hmoov, uas yog, cov hmoov sib xyaw ua ke ntawm cov hmoov hmoov sib xyaw nrog cov hmoov hlau ntshiab.Cov hmoov txhuas feem ntau siv yog graphite hmoov, tooj liab hmoov thiab npib tsib xee hmoov.Ib nrab diffusion lossis kev kho nplaum tuaj yeem siv los ua cov hmoov tooj liab thiab npib tsib xee hmoov ntawm cov hmoov hlau hmoov.

2) Nws yog feem ntau siv tsis tshua muaj hlau hlau hmoov hauv sinter hardening.Hauv kev npaj cov hmoov hlau uas tsis tshua muaj hlau, cov hlau alloying ntsiab lus manganese, molybdenum, nickel thiab chromium ntxiv.Nyob rau hauv kev pom ntawm lub fact tias cov alloying ntsiab yog tag nrho yaj nyob rau hauv hlau, lub hardenability ntawm cov khoom yog nce, thiab lub microstructure ntawm cov khoom tom qab sintering yog uniform.