Nyob rau hauv kev ua ntawm precision mechanical qhov chaw, qhov yuav tsum tau rau lub zog thiab toughness yog kuj siab. Nws cov kev ua haujlwm ua haujlwm thiab kev pabcuam lub neej muaj feem cuam tshuam nrog nws qhov kev ua haujlwm saum npoo av. Kev txhim kho ntawm qhov chaw ua haujlwm tsis tuaj yeem ua tiav los ntawm kev cia siab rau cov ntaub ntawv, uas kuj yog ib qho kev tsis txaus ntseeg heev. Txawm li cas los xij, hauv kev ua haujlwm tiag tiag, nws qhov kev ua tau zoo yuav tsum ua raws li tus qauv. Lub sijhawm no, kev siv thev naus laus zis thev naus laus zis yog xav tau.
Hauv kev kho pwm saum npoo av, pwm polishing tshuab yog qhov txuas tseem ceeb heev, thiab tseem yog txheej txheem tseem ceeb hauv cov txheej txheem ntawm kev ua haujlwm. Cov txheej txheem machining nto kho cov txheej txheem precision mechanical qhov tseem ceeb heev hauv cov txheej txheem machining. Nws yog tsim nyog nco ntsoov tias cov pwm nto polishing txheej txheem ntawm precision qhov chaw tsis tsuas yog cuam tshuam los ntawm cov txheej txheem thiab polishing khoom, tab sis kuj los ntawm specularity ntawm cov ntaub ntawv ib feem. Cov ntsiab lus no tsis tau them nyiaj txaus rau hauv kev ua haujlwm tam sim no, uas tseem qhia tau tias polishing nws tus kheej cuam tshuam los ntawm cov khoom siv.
Txawm hais tias kev siv thev naus laus zis los txhim kho qhov ua tau zoo ntawm qhov chaw precision yog tas li hloov kho dua tshiab, cov yeeb yaj kiab hardening deposition, nitriding thiab carburizing thev naus laus zis tseem siv dav hauv kev ua cov khoom precision. Vim tias nitriding tshuab tuaj yeem tau txais qib siab ntawm cov khoom saum npoo av, thiab cov txheej txheem ntawm nitriding thev naus laus zis zoo sib xws nrog cov txheej txheem quenching ntawm cov hlau hauv qhov tseeb.
Qhov kub ntawm nitriding yog tsawg heev, yog li tom qab ua tiav los ntawm nitriding tshuab, tsis tas yuav tsum tau ua kom txias txias, yog li qhov deformation ntawm precision qhov chaw yuav tsawg heev. Yog li ntawd, nitriding tshuab kuj yog ib qho ntawm cov thev naus laus zis tshaj plaws uas siv los ntxiv dag zog rau qhov kev ua tau zoo hauv kev ua cov khoom siv tshuab precision, thiab siv dav siv tam sim no.