High density, zoo heev formability thiab machinability, zoo heev corrosion kuj, siab modulus elasticity, impressive thermal conductivity thiab tsawg thermal expansion. Peb nthuav qhia: peb cov tungsten hnyav hlau alloys.
Peb "heavyweights" yog siv, piv txwv li, nyob rau hauv aviation thiab aerospace industries, kev kho mob technology, automotive thiab foundry industries los yog rau roj thiab roj drilling. Peb nthuav qhia luv luv peb ntawm cov hauv qab no:
Peb cov tungsten hnyav hlau alloys W-Ni-Fe thiab W-Ni-Cu muaj qhov ceev tshwj xeeb (17.0 txog 18.8 g / cm3) thiab muab kev tiv thaiv kev ruaj ntseg tiv thaiv X-ray thiab gamma hluav taws xob. Ob W-Ni-Fe thiab peb cov khoom siv tsis-magnetic W-Ni-Cu yog siv los tiv thaiv piv txwv hauv daim ntawv thov kev kho mob tab sis kuj hauv kev lag luam roj thiab roj. Raws li collimators nyob rau hauv cov khoom siv hluav taws xob kho mob lawv xyuas kom meej qhov raug. Hauv kev ntsuas qhov hnyav peb siv qhov tshwj xeeb siab ceev ntawm peb cov tungsten hnyav hlau alloy. W-Ni-Fe thiab W-Ni-Cu nthuav tsuas yog me ntsis ntawm qhov kub thiab txias thiab dissipate cua sov tshwj xeeb. Raws li pwm inserts rau aluminium foundry ua hauj lwm, lawv tuaj yeem rov ua kom sov thiab txias dua yam tsis muaj nkig.
Nyob rau hauv cov txheej txheem hluav taws xob tawm Machining (EDM), hlau yog machined rau qib siab ntawm precision los ntawm cov hluav taws xob tawm ntawm workpiece thiab electrode. Thaum tooj liab thiab graphite electrodes tsis mus txog rau txoj haujlwm, hnav-tiv taus tungsten-tungsten-tooj-electrodes muaj peev xwm tshuab txawm tias cov hlau tsis muaj teeb meem. Hauv plasma tshuaj tsuag nozzles rau txheej txheej kev lag luam, cov khoom siv ntawm tungsten thiab tooj liab ntxiv rau ib leeg zoo kawg nkaus.
Infiltrated metallic tungsten hnyav hlau muaj ob yam khoom siv. Thaum lub sij hawm ob-theem manufacturing txheej txheem, ib tug ntxeem tau sintered puag yog thawj tsim los ntawm cov tivthaiv nrog lub siab melting point, piv txwv li ib tug refractory hlau, ua ntej lub qhib pores ces infiltrated nrog lub liquified tivthaiv nrog lub qis melting point. Cov khoom ntawm tus kheej cov khoom tseem tsis hloov pauv. Thaum soj ntsuam nyob rau hauv lub microscope, cov khoom ntawm txhua yam ntawm cov khoom tseem yuav ua pov thawj. Ntawm qib macroscopic, txawm li cas los xij, cov khoom ntawm tus kheej cov khoom sib xyaw ua ke. Raws li cov khoom siv hlau hybrid, cov khoom siv tshiab yuav, piv txwv li, muaj cov thermal conductivity tshiab thiab thermal expansion qhov tseem ceeb.
Cov kua theem-sintered tungsten-hnyav hlau yog tsim los ntawm kev sib xyaw ntawm cov hmoov hlau hlau hauv cov txheej txheem ib-theem ntau lawm thaum lub sij hawm cov khoom uas muaj cov ntsiab lus melting qis yog yaj mus rau cov uas muaj cov ntsiab lus melting ntau dua. Thaum lub sij hawm binder theem, cov khoom no tsim alloys nrog cov uas muaj ib tug ntau dua melting point. Txawm tias ib tug loj npaum li cas ntawm tungsten, uas muaj ib tug siab melting point, yog yaj nyob rau hauv lub binder theem. Planse cov kua theem sintered sib dhos los ntawm tungsten tivthaiv cov txiaj ntsig, muaj peev xwm nqus tau ntawm cov kev txom nyem ntawm kev sib piv hauv kev sib piv, cov coefficient ntawm thermal expantion thiab thermal thiab hluav taws xob conductivity ntawm cov kua theem-sintered Cheebtsam nyob ntawm ib tug loj npaum li cas ntawm cov muaj pes tsawg leeg koom nyob rau hauv lub binder. theem.
Cov ntaub ntawv rov qab nrum ib txhij ua ke cov khoom siv ntawm ob yam khoom sib txawv. Thaum lub sijhawm txheej txheem no, cov ntaub ntawv lawv tus kheej tau khaws cia rau hauv lawv lub xeev qub thiab tsuas yog khi rau ntawm qhov sib tshuam nyias. Cov hlau yog fused hauv pwm los tsim ib daim ntawv cog lus ntawm ob peb micrometers loj. Tsis zoo li cov txheej txheem vuam thiab vuam, txoj kev no tshwj xeeb yog ruaj khov thiab ua kom zoo thermal conduction.
Cov Khoom Kub Kub rau Tungsten Heavy Alloys
