Molybdenum thiab nws cov alloys, vim lawv qhov siab melting point, siab zog, thiab zoo heev -kub stability, yog dav siv nyob rau hauv aerospace, electronics, high -kub rauv qauv, thiab tshwj xeeb metallurgy. Kev ua tiav tag nrho ntawm lawv qhov kev ua tau zoo yog nyob ntawm kev tswj xyuas zoo thoob plaws hauv tag nrho cov txheej txheem los ntawm cov khoom siv raw mus rau cov khoom tiav. Tsuas yog los ntawm kev sim thiab kev tswj cov txheej txheem ntawm txhua theem tuaj yeem ua kom ntseeg tau tias muaj kev ntseeg siab thiab sib xws raws li kev ua haujlwm hnyav.
Raw khoom zoo yog qhov tseem ceeb ntawm kev tswj xyuas. Lub purity, particle loj tis, thiab impurity cov ntsiab lus ntawm molybdenum hmoov thiab alloying ntsiab ncaj qha cuam tshuam rau qhov ntom thiab txhua yam khoom ntawm cov khoom kawg. High- purity molybdenum raw cov ntaub ntawv yuav tsum tau siv, thiab cov proportions ntawm alloying ntsiab xws li titanium, zirconium, thiab carbon yuav tsum raug ntsuas kom meej los tiv thaiv cov kev hloov nyob rau hauv recrystallization kub los yog ib tug txo nyob rau hauv siab - kub lub zog vim muaj compositional deviations. Ua ntej nkag mus rau hauv lub Hoobkas, tshuaj ntsuam xyuas, oxygen, nitrogen, thiab hydrogen gas cov ntsiab lus txiav txim, thiab particle loj sieving yuav tsum tau ua kom ua raws li cov txheej txheem specifications.
Nyob rau hauv cov txheej txheem kev npaj, parameter teeb tsa thiab kev soj ntsuam cov txheej txheem rau hmoov metallurgy los yog lub tshuab nqus tsev melting yog ib qho tseem ceeb heev. Lub siab tsim, sintering kub, thiab tuav lub sij hawm yuav tsum tau precisely tswj raws li cov khoom qib kom tsis txhob muaj porosity, tawg, los yog tsis sib xws alloying. Density testing and metallographic observation should be performed on the sintered billet to confirm a uniform microstructure and the absence of harmful phase precipitation. Cov txheej txheem kub forging, kub dov, thiab annealing txheej txheem thaum lub sij hawm ua yuav tsum tau txiav txim raws li nyob rau hauv cov ntaub ntawv theem ntawm daim duab kos los tiv thaiv grain coarsening los yog ntau residual kev nyuaj siab, uas yuav cuam tshuam rau seem stability thiab siab -kub kev ua tau zoo.
Kev tswj xyuas qhov tseeb ntawm qhov chaw thiab qhov loj me yog qhov tseem ceeb rau kev ua kom muaj kev sib dhos thiab kev ua haujlwm ntawm cov khoom tiav. Kev ntsuas qhov ntsuas geometric, ntsuas qhov roughness ntawm qhov chaw, thiab kuaj xyuas qhov tsis xws luag yog qhov tsim nyog rau cov khoom tiav, tshem tawm tam sim ntawd khawb, qhov, oxide nplai, thiab lwm yam tsis xws luag uas cuam tshuam rau kev ntseeg tau. Rau siab -kub load-cov kabmob, kev kuaj ultrasonic lossis radiographic yuav tsum tau ua kom paub txog kev suav nrog thiab microcracks.
Kev txheeb xyuas kev ua tau zoo yog theem kawg ntawm kev tswj kom zoo. Chav ntsuas kub thiab siab -kub tensile, dabtsi yog khoov, creep, thiab thermal fatigue tests yuav tsum tau ua raws li cov qauv tsim nyog kom paub meej tias cov khoom thiab thermal zog ntawm cov khoom ua tau raws li lub hom phiaj kev pab cuam. Rau molybdenum alloy Cheebtsam siv nyob rau hauv kev lag luam electronics, conductivity thiab coefficient ntawm thermal expansion yuav tsum tau kuaj kom paub tseeb tias lawv phim cov cuab yeej tsim tsis.
Los ntawm kev tsim kom muaj kev tswj xyuas zoo uas npog tag nrho cov txheej txheem los ntawm kev noj cov khoom siv raw, cov txheej txheem tsis, qhov ntev mus rau kev ua haujlwm pov thawj, molybdenum thiab nws cov alloys tuaj yeem tswj tau qhov kev ua tau zoo nyob rau hauv siab - kub, siab -load, thiab corrosive ib puag ncig, muab kev lav zoo rau kev nyab xeeb thiab ruaj khov ntawm cov khoom siv siab -end.
