Terminology ntawm Hard Alloy (2)

Decarbonization

Tom qab sintering cov cemented carbide, cov ntsiab lus carbon tsis txaus.

Thaum cov khoom yog decarbonized, cov ntaub so ntswg hloov ntawm WC-Co mus rau W2CCo2 los yog W3CCo3. Cov ntsiab lus zoo tshaj plaws ntawm tungsten carbide hauv cemented carbide (WC) yog 6.13% los ntawm qhov hnyav. Thaum cov ntsiab lus carbon tsawg dhau lawm, yuav muaj cov qauv tsis muaj cov pa roj carbon monoxide hauv cov khoom. Decarburization zoo heev txo lub zog ntawm tungsten carbide cement thiab ua rau nws nkig.

Carburization

Nws hais txog cov ntsiab lus carbon ntau dhau tom qab sintering cov cemented carbide. Cov ntsiab lus zoo tshaj plaws ntawm tungsten carbide hauv cemented carbide (WC) yog 6.13% los ntawm qhov hnyav. Thaum cov ntsiab lus carbon siab dhau lawm, cov qauv qhia carburized yuav tshwm sim hauv cov khoom. Yuav muaj qhov tseem ceeb tshaj ntawm cov pa roj carbon dawb hauv cov khoom. Dawb carbon zoo heev txo lub zog thiab hnav tsis kam ntawm tungsten carbide. C-hom pores nyob rau hauv theem-nrhiav qhia qhov degree ntawm carburization.

Kev quab yuam

Coercive quab yuam yog qhov seem sib nqus quab yuam ntsuas los ntawm kev sib nqus cov khoom sib nqus hauv cov cemented carbide mus rau lub xeev saturated thiab ces demagnetizing nws. Muaj kev sib raug zoo ntawm qhov nruab nrab qhov loj me ntawm cov cemented carbide theem thiab coercivity. Qhov finer qhov nruab nrab particle loj ntawm lub magnetized theem, qhov siab dua tus nqi coercivity.

Sib nqus saturation

Cobalt (Co) yog sib nqus, thaum tungsten carbide (WC), titanium carbide (TiC), thiab tantalum carbide (TaC) tsis yog hlau nplaum. Yog li ntawd, los ntawm thawj zaug ntsuas qhov sib nqus saturation tus nqi ntawm cobalt nyob rau hauv ib cov khoom thiab ces muab piv nrog tus nqi sib xws ntawm ib tug ntshiab cobalt qauv, txij li thaum lub sib nqus saturation yog cuam tshuam los ntawm alloying ntsiab, alloying theem ntawm cobalt-kawg theem yuav tau txais. . Txhua qhov kev hloov pauv hauv cov qib binder tuaj yeem ntsuas tau. Txij li cov pa roj carbon plays lub luag haujlwm tseem ceeb hauv kev tswj cov khoom sib xyaw, cov qauv no tuaj yeem siv los txiav txim siab qhov sib txawv ntawm cov ntsiab lus carbon zoo tagnrho. Qhov qis sib nqus saturation qhov tseem ceeb qhia cov ntsiab lus carbon tsawg thiab muaj peev xwm rau decarburization. High magnetic saturation qhov tseem ceeb qhia tias muaj cov pa roj carbon dawb thiab carburization.

Lub pas dej Cobalt

Tom qab sintering cov hlau cobalt (Co) binder thiab tungsten carbide, ntau tshaj cobalt yuav raug tsim, uas yog ib tug tshwm sim hu ua "cobalt pooling". Qhov no feem ntau yog vim thaum lub sij hawm HIP (Pressure Sintering) txheej txheem, qhov kub thiab txias sintering tsawg dhau thiab cov ntaub ntawv tsis txaus, los yog cov pores tau ntim nrog cobalt. Txiav txim siab qhov loj ntawm lub pas dej cobalt los ntawm kev sib piv cov duab metallographic. Lub xub ntiag ntawm lub pas dej cobalt hauv cemented carbide cuam tshuam qhov hnav tsis kam thiab lub zog ntawm cov khoom.

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 mus rau US MAIL hauv qab ntawm nplooj ntawv.