Sintering txheej txheem ntawm tungsten carbide

Cov txheej txheem sintering yog ib qho ntawm cov kauj ruam tsim nyog hauv kev tsim cov khoom tungsten carbide. Raws li qhov kev txiav txim ntawm sintering, sintering txheej txheem yuav muab faib ua plaub theem pib. Cia peb tham txog plaub kauj ruam no kom ntxaws thiab koj yuav paub ntau ntxiv txog cov txheej txheem sintering ntawm tungsten carbide.

1. Tshem tawm ntawm Kev Tsim Tus Neeg Saib Xyuas thiab Hlawv-hauv theem

Vim qhov kub thiab txias, cov dej noo, roj, thiab cov dej cawv seem hauv cov tshuaj tsuag qhuav yuav absorbed los ntawm hmoov los yog molding tus neeg sawv cev kom txog rau thaum volatilized.

Qhov nce hauv qhov kub thiab txias yuav ua rau maj mam tsim cov tshuaj 'decomposition lossis vaporization. Tom qab ntawd tus tsim tus neeg sawv cev yuav ua rau kom cov ntsiab lus carbon ntawm lub cev sintered. Qhov ntau ntawm cov ntsiab lus carbon sib txawv nrog qhov sib txawv ntawm tus neeg sawv cev ntawm cov txheej txheem sintering sib txawv.

Ntawm qhov kub ntawm sintering, qhov txo qis hydrogen ntawm cobalt thiab tungsten oxide tsis hnov ​​​​mob hnyav yog tias lub tshuab nqus tsev txo qis thiab sintering.

Nrog rau qhov kub thiab txias thiab annealing, cov hmoov sib cuag kev nyuaj siab yog maj tshem tawm.

Cov hmoov hlau uas khi tau pib rov qab thiab rov ua dua tshiab. Raws li nto diffusion tshwm sim, lub zog compressive nce. Lub block loj shrinkage tsis muaj zog thiab tuaj yeem ua tiav raws li cov yas yas dawb.

2. Lub Xeev Sintering theem

Lub cev sintered yuav cog lus pom tseeb hauv lub xeev sintering theem. Nyob rau theem no, cov tshuaj tiv thaiv zoo, diffusion, thiab cov yas ntws nce, thiab lub cev sintered yuav cog lus.

3. Ua kua sintering theem

Thaum lub cev sintered tshwm sim ua kua theem, lub shrinkage tiav sai sai. Tom qab ntawd cov qauv tsim ntawm cov alloy yuav tsim nyob rau hauv kev hloov pauv crystalline. Thaum qhov kub nce mus txog qhov kub ntawm eutectic, solubility ntawm WC hauv Co tuaj yeem ncav cuag li 10%. Vim yog qhov nro ntawm cov kua theem, cov hmoov hmoov raug kaw rau ib leeg. Yog li ntawd, cov kua theem maj mam sau lub pores nyob rau hauv hais. Thiab qhov ceev ntawm qhov thaiv tau nce ntau.

4. Lub caij txias

Rau theem kawg, qhov kub thiab txias yuav poob rau hauv chav tsev kub. Cov kua theem yuav ua kom khov thaum qhov kub thiab txias. Cov duab kawg ntawm cov alloy yog li ruaj. Nyob rau theem no, lub microstructure thiab theem muaj pes tsawg leeg ntawm cov alloy hloov nrog txias txias. Txhawm rau txhim kho cov alloys lub cev thiab cov khoom siv kho tshuab, cov yam ntxwv ntawm cov hlau no tuaj yeem siv los ua kom sov cov cemented carbide.

Yog tias koj txaus siab rau cov khoom lag luam tungsten carbide thiab xav paub ntau ntxiv thiab cov ntsiab lus, koj tuaj yeem tiv tauj peb hauv xov tooj lossis xa ntawv ntawm sab laug, lossis xa US MAIL hauv qab ntawm nplooj ntawv.