Dab tsi yog cov khoom siv rau kev txhaj tshuaj pwm?
Taw qhia rau Mould Steel
Pwm steel tuaj yeem muab faib ua 3 pawg: txias ua haujlwm pwm hlau, kub ua haujlwm pwm hlau, thiab yas pwm hlau, uas yog siv rau forging, stamping, txiav, thiab tuag casting. Txij li thaum siv ntau yam pwm sib txawv thiab cov kev ua haujlwm yog qhov nyuaj, cov pwm hlau siv rau kev tsim cov pwm yuav tsum muaj siab hardness, lub zog, hnav tsis kam, txaus toughness, nrog rau siab hardenability, quenchability, thiab lwm yam kev ua tau zoo raws li kev ua haujlwm. Vim qhov kev siv sib txawv thiab kev ua haujlwm nyuaj, kev ua haujlwm ntawm cov pwm hlau kuj txawv.
Cold ua hauj lwm pwm steel muaj xws li txias stamping tuag, hlau kos tuag, sib sib zog nqus nqus tuag, embossing tuag, xov dov tuag, yob txoj kev tuag, txias taub hau tuag, thiab txias extrusion tuag. Txias ua hauj lwm pwm steel, raws li nws cov kev tsim ua hauj lwm tej yam kev mob, yuav tsum muaj siab hardness, lub zog, hnav tsis kam, txaus toughness, raws li zoo raws li siab hardenability, quenchability, thiab lwm yam txheej txheem kev ua tau zoo. Cov cuab yeej siv hlau siv rau cov hom phiaj no feem ntau yog cov qib siab - carbon alloy steel, nrog rau cov pa roj carbon ntau tshaj 0.80%. Chromium yog ib qho tseem ceeb ntawm cov hlau alloying nyob rau hauv hom hlau, thiab nws qhov loj feem feem ntau tsis ntau tshaj 5%. Txawm li cas los xij, rau qee cov pwm hlau uas yuav tsum tau hnav tsis kam thiab me me deformation tom qab quenching, qhov siab tshaj plaws chromium pawg feem ntau tuaj yeem ncav cuag 13%, thiab thiaj li tsim tau cov carbides loj, cov pa roj carbon loj feem hauv cov hlau kuj yog siab heev, mus txog 2.0% ~ 2.3%. Txias ua hauj lwm pwm hlau muaj cov ntsiab lus siab carbon, thiab nws cov microstructure feem ntau belongs rau hypereutecoid steel los yog ledeburite steel. Feem ntau siv steel hom muaj xws li siab-carbon low- alloy steel, siab-carbon siab-chromium steel, chromium-molybdenum steel, thiab nruab nrab{17}}carbon chromium{18}}tungsten{19}}manganese hlau.
Cov pwm ua haujlwm kub tau muab faib ua rauj forging, tuag forging, extrusion, thiab tuag casting hom, xws li kub forging tuag, xovxwm forging tuag, stamping tuag, kub extrusion tuag, thiab hlau tuag casting tuag. Cov pwm ua haujlwm kub tau raug rau cov neeg kho tshuab kev ntxhov siab loj heev thaum ua haujlwm, thiab yuav tsum tiv thaiv cov teebmeem ntawm kev rov ua kom sov thiab txias, uas ua rau muaj kev ntxhov siab loj heev. Ntxiv nrog rau qhov siab tawv, lub zog, tawv tawv tawv, hnav tsis kam, thiab tawv, kub ua haujlwm pwm hlau yuav tsum muaj qhov zoo siab - kub lub zog, thermal qaug zog stability, thermal conductivity, thiab corrosion kuj. Tsis tas li ntawd, nws yuav tsum muaj kev ua haujlwm siab kom ntseeg tau tias cov khoom siv kho tshuab tsis sib xws thoob plaws tag nrho cov ntoo khaub lig- ntu. Rau kev tuag casting pwm hlau, nws yuav tsum muaj qhov ua tau zoo los tiv thaiv cov cua sov thiab txias ntawm cov txheej txheej saum npoo yam tsis muaj qhov tawg, thiab tiv taus qhov cuam tshuam thiab yaig ntawm cov kua hlau ntws. Cov hlau no feem ntau yog nyob rau nruab nrab - carbon alloy steel, nrog cov pa roj carbon ntau ntawm 0.30% ~ 0.60%, uas yog cov hlau hypoeutecoid, thiab qee cov hlau ua eutectoid lossis hypereutectoid steel vim qhov sib ntxiv ntawm ntau cov ntsiab lus alloying (xws li tungsten, molybdenum, vanadium, thiab lwm yam). Feem ntau siv cov hlau xws li chromium{12}}manganese steel, chromium-nickel steel, chromium steel, thiab chromium{14}}tungsten steel.
Cov pwm yas muaj xws li thermoplastic yas pwm thiab thermosetting yas pwm. Cov hlau rau yas pwm yuav tsum muaj qee yam khoom xws li lub zog, hardness, hnav tsis kam, thermal stability, thiab corrosion kuj. Tsis tas li ntawd, nws tseem yuav tsum muaj cov txheej txheem zoo, xws li kev kho cua sov me me deformation, zoo machinability, zoo corrosion kuj, zoo sib tsoo thiab polishing kev ua tau zoo, zoo kho vuam kev ua tau zoo, siab roughness, zoo thermal conductivity, thiab ruaj khov ua hauj lwm qhov loj thiab cov duab. Feem ntau, kub ua haujlwm pwm hlau tuaj yeem xaiv rau kev txhaj tshuaj molding lossis extrusion molding tuag; txias ua hauj lwm pwm hlau tuaj yeem xaiv rau thermosetting molding thiab tuag uas yuav tsum tau hnav tsis kam thiab siab zog.