Cov khoom siv feem ntau siv rau cov khoom pwm xws li tungsten steel, siab -ceev steel, bearing steel, stainless hlau, tooj dag, hlau alloys, caij nplooj ntoos hlav steel, thiab carbide steel. Cov ntaub ntawv tshwj xeeb suav nrog qib siab -ceev steel SKH51, SKD11, thiab DC53, thaum cov ntaub ntawv tshwj xeeb xws li ASP-30 tuaj yeem hloov kho.
Pwm Cheebtsam yuav tsum ua tau raws li ntau yam kev ua tau zoo. Hnav tsis kam yog ib qho tseem ceeb tshaj plaws thiab tseem ceeb ntawm cov pwm. Hardness yog qhov tseem ceeb cuam tshuam rau kev hnav tsis kam, uas tseem cuam tshuam rau hom, ntau, morphology, qhov loj me, thiab kev faib tawm ntawm carbides hauv cov khoom. Moulds yuav tsum muaj lub zog siab thiab tawv kom tiv thaiv kev tawg sai sai thaum lub sijhawm ua haujlwm. Lub toughness ntawm pwm mas nyob ntawm cov ntsiab lus carbon, grain loj, thiab microstructure ntawm cov khoom.
Kev qaug zog tawg ntawm pwm feem ntau yog nyob ntawm nws lub zog, toughness, hardness, cov ntsiab lus ntawm cov khoom siv, thiab kev siv tshuab. Kev khiav hauj lwm kub ntawm cov pwm tuaj yeem txo qhov hardness thiab lub zog; Yog li ntawd, cov khoom siv pwm yuav tsum muaj kev tiv thaiv siab rau tempering kom ntseeg tau siab hardness thiab lub zog ntawm kev ua haujlwm kub. Thermal qaug zog yog ib qho ntawm cov tsis ua hauj lwm tseem ceeb ntawm kub - ua hauj lwm pwm; Cov pwm no yuav tsum muaj kev tiv thaiv siab rau thermal qaug zog. Qee cov pwm, xws li cov pwm yas, muaj cov khoom xws li tshuaj chlorine thiab fluorine, uas decompose thaum rhuab, tso cov roj corrosive heev uas ua rau pwm kab noj hniav.
Yog li ntawd, lawv yuav tsum tau corrosion-resistant. Tsis tas li ntawd, siab - cov khoom pwm precision muaj qhov yuav tsum tau muaj siab heev rau kev ua haujlwm raug; Piv txwv li, qhov ntev ntev tuaj yeem ncav cuag ± 0.001mm, coaxiality nyob rau hauv 0.002mm, thiab nto roughness tuaj yeem ncav cuag Ra0.025.