Forged tungsten molybdenum

cov khoom siv

Tungsten Heavy alloys

High ceev, yav tom ntej formability thiab machinability, koj xeb kuj, siab modulus ntawm elasticity, impressive thermal conductivity thiab tsawg thermal expansion. Peb muaj: peb tungsten hnyav hlau alloys.

Peb "heavyweights" yog siv, piv txwv li, nyob rau hauv lub chaw ua dav hlua thiab aerospace industries, kev kho mob technology, lub tsheb thiab foundry industries los yog rau roj thiab cov nkev drilling. Peb luv luv tam sim no peb cov hauv qab no:

Peb tungsten hnyav hlau alloys W-Ni-Fe thiab W-Ni-Cu muaj ib tug tshwj xeeb kev kub ceev (17.0 mus 18,8 g / cm3) thiab muab txhim khu kev qha shielding tiv thaiv X-ray thiab gamma tawg. Ob W-Ni-Fe thiab peb tsis yog-sib nqus khoom W-Ni-Cu yog siv rau cov shielding piv txwv li nyob rau hauv kev kho mob daim ntawv thov tab sis kuj nyob rau hauv cov roj thiab cov nkev kev lag luam. Raws li collimators nyob rau hauv tawg txoj kev kho cov khoom lawv kom ib tug muaj tseeb raug. Nyob rau hauv ntsuas tes taw hnyav li peb ua rau kev siv ntawm cov tshwj xeeb yog kev kub ceev ntawm peb tungsten hnyav hlau hlau. W-Ni-Fe thiab W-Ni-Cu nthuav tsuas heev me ntsis ntawm high kub thiab dissipate tshav kub yog tshwj xeeb zoo. Raws li pwm inserts rau txhuas foundry ua hauj lwm, lawv muaj peev xwm ua pheej rhuab thiab txias tsis ua nkig.

Nyob rau hauv lub Hluav taws xob cov tawm Machining (EDM) txheej txheem, co yog machined rau ib tug huab theem ntawm precision los ntawm txoj kev hluav taws xob ntswg ntawm lub workpiece thiab electrode. Thaum tooj liab thiab graphite electrodes yog tsis mus txog rau txoj hauj lwm, hnav-resistant tungsten-copper- electrodes yog tau tshuab txawm nyuaj co tsis muaj teeb meem. Nyob rau hauv ntshav tsuag nozzles rau lub txheej kev lag luam, cov khoom thaj chaw ntawm tungsten thiab tooj liab dua Nkij los txuam rau ib leeg txig.

Infiltrated nws yog xim hlau tungsten hnyav hlau muaj xws li ob cov ntaub ntawv uas lub Cheebtsam. Thaum lub sij hawm ib tug ob-theem tsim txoj kev, 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 qhib pores yog ces infiltrated nrog lub liquified tivthaiv nrog rau sab melting point. Lub zog ntawm cov neeg lub Cheebtsam nyob twj ywm unchanged. Thaum ntsuam xyuas nyob rau hauv lub tshuab kuaj kab mob, cov khoom ntawm txhua tus ntawm lub Cheebtsam tseem yuav tshwm. Thaum lub macroscopic theem, txawm li cas los, lub zog ntawm cov neeg Cheebtsam yog ua ke. Raws li ib tug hybrid nws yog xim hlau khoom, cov khoom tshiab tej zaum yuav, piv txwv li, muaj tshiab thermal conductivity thiab thermal expansion qhov tseem ceeb.

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Kua theem-sintered tungsten-co heavy yog manufactured los ntawm lub ntoos sib xyaw hlau hmoov nyob rau hauv ib tug ib leeg-theem lawm txheej txheem thaum lub sij hawm uas lub Cheebtsam nrog qis melting ntsiab lus yog melted mus rau cov neeg uas muaj ntau dua melting ntsiab lus. Thaum lub sij hawm phau ntawv theem, cov Cheebtsam tsim alloys nrog cov neeg uas muaj ib tug ntau dua melting point. Txawm tias ib tug loj npaum li cas ntawm cov tungsten, uas muaj ib tug high melting point, yog yaj thaum lub sij hawm phau ntawv theem. Plansee lub kua theem sintered puas ntaub ntawv tau txais txiaj ntsim los ntawm cov tungsten tivthaiv tus ceev, modulus ntawm elasticity thiab muaj peev xwm mus nqus X-ray thiab gamma tawg tsis muaj kev txom nyem los ntawm ib yam ntawm cov drawbacks txuam nrog qhov kev ntshiab tungsten rau hauv sib piv, lub coefficient ntawm thermal expansion thiab cov thermal thiab hluav taws xob conductivity ntawm cov kua theem-sintered Cheebtsam seb rau ib tug heev zoo raws li nyob rau hauv muaj pes tsawg leeg muab kev koom tes nyob rau hauv lub phau ntawv theem.

Rov qab-cam khwb cia ntaub ntawv txhij muab cov ntaub ntawv uas thaj chaw ntawm ob tug sib txawv cov ntaub ntawv uas lub Cheebtsam. Thaum lub sij hawm tus txheej txheem no, cov ntaub ntawv lawv tus kheej yog muab khaws cia tseg nyob rau hauv lawv cov thawj lub xeev thiab txhua yam tsuas yog nyob rau ib tug nyias hlws ris. Cov co yog fused nyob rau hauv ib tug pwm tsim tau ib daim ntawv cog lus ntawm tsuas yog ob peb micrometers nyob rau hauv loj. Tsis zoo li vuam thiab soldering hom kev kawm, txoj kev no yog tshwj xeeb yog ruaj khov thiab kom zoo thermal conduction.



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