1. Abrasion tsis kam
Thaum cov 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 khoobYog li ntawd, qhov hnav tsis kam ntawm cov khoom siv yog ib qho tseem ceeb tshaj plaws thiab tseem ceeb ntawm cov pwm.
Hardness yog lub ntsiab tseem ceeb cuam tshuam rau hnav tsis kam.Feem ntau, qhov siab dua qhov hardness ntawm pwm qhov chaw, qhov tsawg dua qhov hnav thiab qhov zoo dua qhov hnav tsis kam.Tsis tas li ntawd, kev puas tsuaj kuj tseem muaj feem xyuam rau hom, ntau, daim ntawv, qhov loj thiab kev faib tawm ntawm carbides hauv cov khoom.
2. Nyuaj
Feem ntau ntawm kev ua haujlwm ntawm pwm yog hnyav heev, thiab qee qhov feem ntau dais qhov cuam tshuam loj, uas ua rau tawg tawg.Txhawm rau tiv thaiv cov pwm pwm los ntawm dheev nkig thaum ua haujlwm, pwm yuav tsum muaj lub zog siab thiab tawv.
Lub toughness ntawm pwm mas nyob ntawm cov ntsiab lus carbon, grain loj thiab microstructure ntawm cov khoom.
3. Kev qaug zog tawg ua haujlwm
Thaum lub sij hawm ua hauj lwm ntawm pwm, nyob rau hauv lub sij hawm ntev ntawm cyclic kev nyuaj siab, nws feem ntau ua rau qaug zog tawg.Nws cov ntaub ntawv yog lub zog me me ntau yam cuam tshuam rau qaug zog pob txha, tensile fatigue fracture hu rau qaug zog tawg thiab khoov qaug zog tawg.
Kev qaug zog tawg ntawm pwm feem ntau yog nyob ntawm nws lub zog, toughness, hardness, thiab cov ntsiab lus ntawm kev suav nrog hauv cov khoom.
4. Kev ua haujlwm siab kub
Thaum cov pwm ua hauj lwm kub siab dua, qhov hardness thiab lub zog yuav raug txo, ua rau thaum ntxov hnav ntawm pwm los yog yas deformation thiab tsis ua hauj lwm.Yog li, cov khoom siv pwm yuav tsum muaj kev tiv thaiv siab rau tempering kom ntseeg tau tias cov pwm muaj zog dua thiab lub zog ntawm kev ua haujlwm kub.
5. Txias thiab kub qaug zog ua haujlwm
Qee cov pwm tau rov ua kom sov thiab txias dua thaum lub sijhawm ua haujlwm, uas ua rau lub ntsej muag ntawm cov kab noj hniav yuav tsum tau ncab thiab siab hloov qhov kev ntxhov siab, uas ua rau tawg thiab tev tawm, ua rau muaj kev sib txhuam, cuam tshuam cov yas deformation, thiab txo qhov raug, uas ua rau. rau Pwm tsis ua hauj lwm.Kub thiab txias qaug zog yog ib qho ntawm cov ntaub ntawv tseem ceeb ntawm kev ua haujlwm ntawm cov pwm ua haujlwm kub, thiab hom pwm no yuav tsum muaj qhov txias txias thiab kub kub ua haujlwm.
6. corrosion kuj
Thaum qee cov pwm, xws li cov pwm yas, ua haujlwm, vim muaj cov tshuaj chlorine, fluorine thiab lwm yam khoom hauv cov yas, lawv yuav raug muab cais ua cov pa phem xws li HCI thiab HF tom qab cua sov, uas yuav ua rau cov pwm tuaj pwm. kab noj hniav, nce nws nto roughness, thiab ua rau kom hnav thiab tsim kua muag.
Post lub sij hawm: Aug-19-2021