Cov yam ntxwv tseem ceeb ntawm Cemented Carbide

Cemented carbide yog cov khoom siv hlau ua los ntawm cov khoom siv tawv tawv ntawm cov hlau refractory thiab matrix hlau los ntawm cov txheej txheem hmoov metallurgy. Vim tias cov khoom xyaw uas muaj nyob rau hauv cov hmoov metallurgy thiab cov txheej txheem kev npaj yog txawv. Cov yam ntxwv ntawm cemented carbide yog txawv. Cia peb tham txog cov yam ntxwv tseem ceeb ntawm cemented carbide hauv kab lus no.

1. Tsis muaj kev taw qhia hauv cemented carbide. Cov cemented carbide yog ua los ntawm hmoov siab sintering. Vim tias cov txheej txheem casting tsis siv, tsis muaj qhov sib txawv ntawm qhov ntom ntom ntawm txheej txheej thiab cov khoom siv sab hauv, yog li tshem tawm qhov sib txawv ntawm cov tshuab ua haujlwm hauv zos uas yuav tshwm sim los ntawm qhov sib txawv ntom ntom.

2. Cemented carbide tsis muaj teeb meem kev kho cua sov. Lub tshuab ua haujlwm ntawm cemented carbide tsis hloov los ntawm cua sov thiab cua txias, nws tsuas yog cuam tshuam los ntawm thermal stress thaum cua sov lossis cua txias. Yog li ntawd, cov txheej txheem ua ntej ntawm cov cemented carbide yuav tsum tau ua ua ntej cov txheej txheem sintering. Tom qab sintering, nws tsuas tuaj yeem ua nrog cov cuab yeej pob zeb diamond. Kev ua haujlwm ntawm cov cemented carbide feem ntau yog txiav txim siab los ntawm tus nqi ntawm cobalt thiab qhov loj me ntawm tungsten carbide.

3. Lub Poisson tus piv ntawm cemented carbide yog 0.21 ~ 0.24. Yog li ntawd, cemented carbide pwm lub puab txoj kab uas hla muaj qhov hloov me me dua li cov pwm hlau nyob rau hauv qhov kev txiav txim ntawm kev ntxhov siab. Yog li, qhov loj ntawm cemented carbide khoom yog ze rau qhov loj ntawm pwm.

4. Carbide muaj zog compressive siab. Cov ntsiab lus cobalt tuaj yeem txiav txim siab lub zog compressive. Lub zog compressive ntawm cov khoom cemented carbide nrog qis cobalt tuaj yeem ncav cuag ntau dua 6000Mpa, uas yog ze li ob zaug ntawm cov hlau.

5. Cemented carbide muaj cov coefficient tsawg ntawm thermal expansion. Cov neeg yuav tsum xav txog qhov no hauv carbide pwm tsim thiab tsim khoom.

6. High thermal conductivity. Lub thermal conductivity ntawm cemented carbide yog peb zaug siab dua stainless hlau.

7. Lub elastic deformation thiab yas deformation ntawm cemented carbide yog me me.

8. Cov yam ntxwv nrov tshaj plaws ntawm cemented carbide yog nws cov hardness siab thiab hnav tsis kam. Lub sij hawm siv ntawm tungsten carbide yog ntev dua stainless hlau.

Tam sim no, cov cemented carbides siv hauv cov pwm hauv tsev yog tsim los ntawm tungsten thiab cobalt.