Thaum nws los txog rau kev xaiv cov khoom siv rau cov pwm ntawm cov khoom siv cib, kev xaiv cov ntaub ntawv yog ib qho tseem ceeb ntawm cov txheej txheem pwm tsim. Hauv cov ntsiab lus yooj yim, nws yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm qhov hnyav, hnav tsis kam, corrosion kuj thiab lwm yam kev xav tau ntawm kev ua haujlwm, thiab tib lub sijhawm, nws yuav tsum ua kom tau raws li kev siv nyiaj txiag. poj niam deev. Cov hauv qab no yog ib qho kev qhia txog rau 6 lub ntsiab lus tshwj xeeb ntawm kev xaiv cov khoom siv pwm rau cov khoom siv tsis siv lub tshuab cib:
1. Toughness: Cov pwm ua haujlwm yog qhov tsis zoo, thiab qee qhov feem ntau dais qhov cuam tshuam loj, ua rau tawg tawg. Txhawm rau tiv thaiv cov pwm los ntawm kev tawg sai sai thaum ua haujlwm, cov pwm yuav tsum muaj lub zog siab thiab tawv. Lub toughness ntawm pwm mas nyob ntawm cov ntsiab lus carbon, grain loj thiab lub koom haum lub xeev ntawm cov khoom.
2. Hnav tsis kam: Thaum qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Yog li ntawd, kev hnav tsis kam ntawm cov khoom siv yog ib qho ntawm cov yam ntxwv tseem ceeb ntawm cov pwm. Hardness yog lub ntsiab tseem ceeb cuam tshuam rau hnav tsis kam. Feem ntau hais lus, qhov siab dua qhov hardness ntawm pwm qhov chaw, qhov hnav me me thiab qhov zoo dua qhov hnav tsis kam. Tsis tas li ntawd, hnav tsis kam kuj tseem muaj feem xyuam rau hom, ntau, zoo li, me me thiab kev faib tawm ntawm carbides hauv cov khoom.
3. corrosion kuj: qee cov pwm, xws li yas pwm, thaum lub sij hawm ua hauj lwm, vim hais tias cov yas muaj cov khoom xws li chlorine thiab fluorine, tom qab cua sov, nws yuav sib cais thiab daws cov corrosive gases muaj zog xws li HCI thiab HF, uas yuav erode lub nto ntawm kab noj hniav thiab ntxiv rau saum npoo. Roughness ua rau hnyav hnyav thiab tsis ua haujlwm.
4. Qhov kub thiab txias tsis kam: Thaum cov pwm ua haujlwm kub siab, qhov hardness thiab lub zog yuav raug txo, thiab cov pwm yuav hnav thaum ntxov lossis yas deformation yuav ua tsis tiav. Yog li ntawd, cov khoom siv pwm yuav tsum muaj kev ruaj ntseg ntau dua, thiab cov pwm muaj zog dua thiab lub zog ntawm kev ua haujlwm kub.
5. Resistance rau txias thiab kub qaug zog: ib feem ntawm cov pwm yog rov rhuab thiab txias thaum lub sij hawm ua hauj lwm txheej txheem, thiaj li hais tias cov kab noj hniav nto cuam tshuam los ntawm stretching thiab siab kev nyuaj siab, ua rau lub nto tawg thiab tev, nce kev sib txhuam, hinder yas deformation. , txo qhov loj me, thiab ua rau pwm Fault. Kub thiab txias qaug zog yog ib qho tseem ceeb ntawm kev ua tsis tiav ntawm cov pwm kub, thiab cov pwm no yuav tsum muaj kev tiv thaiv kom txias thiab kub kub.
6. Kev qaug zog tawg ua haujlwm: Nyob rau hauv cov txheej txheem ntawm kev ua haujlwm pwm, nyob rau hauv kev ua haujlwm ntev ntawm kev ntxhov siab, nws feem ntau ua rau qaug zog tawg. Nws cov ntaub ntawv muaj xws li tsis tshua muaj zog ntau yam cuam tshuam qaug zog pob txha, tensile fatigue fracture, hu rau fatigue fracture, thiab khoov qaug zog tawg. Kev qaug zog tawg ntawm cov pwm feem ntau yog nyob ntawm nws lub zog, toughness, hardness, thiab cov ntsiab lus ntawm kev suav nrog hauv cov khoom.
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