Vim li cas tungsten Carbide cov khoom Shrink tom qab Sintering?

Tungsten carbide yog ib qho ntawm cov khoom siv nrov tshaj plaws hauv kev lag luam niaj hnub no. Nyob rau hauv lub Hoobkas, peb ib txwm siv hmoov metallurgy los tsim tungsten carbide khoom. Hauv sintering, koj tuaj yeem pom tias cov khoom tungsten carbide shrunk. Yog li dab tsi tshwm sim rau cov khoom tungsten carbide, thiab vim li cas cov khoom tungsten carbide poob qis tom qab sintering? Hauv tsab xov xwm no, peb tab tom mus tshawb txog qhov laj thawj.

Kev tsim cov khoom siv tungsten carbide

1. Xaiv thiab yuav khoom 100% raw khoom, tungsten carbide;

2. Sib tov tungsten carbide hmoov nrog cobalt hmoov;

3. Milling cov hmoov sib xyaw hauv lub pob sib xyaw tshuab nrog qee cov kua xws li dej thiab ethanol;

4. Txau kom qhuav cov hmoov ntub dej;

5. Compacting hmoov rau hauv cov duab sib txawv thiab ntau thiab tsawg raws li cov neeg siv khoom xav tau. Cov txheej txheem nias tsim nyog yog txiav txim siab los ntawm hom thiab qhov ntau thiab tsawg ntawm tungsten carbide khoom;

6. Sintering nyob rau hauv sintering rauv;

7. Kev kuaj xyuas qhov zoo kawg.

Cov theem ntawm sintering tungsten carbide khoom

1. Tshem tawm ntawm tus neeg sawv cev molding thiab pre-burning theem;

Nyob rau theem no, tus neeg ua haujlwm yuav tsum tswj qhov kub thiab txias kom maj mam nce. Raws li qhov ntsuas kub nce zuj zus, cov dej noo, roj, thiab cov kuab tshuaj residual nyob rau hauv lub compacted tungsten carbide yuav evaporate, yog li no theem yog tshem tawm cov molding tus neeg sawv cev thiab lwm yam residual tshuaj thiab pre-hlawv. Cov theem no tshwm sim hauv qab 800 ℃

2. Khoom-theem sintering theem;

Raws li qhov kub thiab txias tshaj 800 ℃, nws tig mus rau theem thib ob. Cov theem no tshwm sim ua ntej cov kua muaj nyob hauv qhov system no.Nyob rau theem no, cov yas ntws nce, thiab lub cev sintered shrinks ho.Tungsten carbide shrinking tuaj yeem pom tseeb, tshwj xeeb tshaj yog saum 1150 ℃.

Cr. Sandvik

3. Ua kua-theem sintering theem;

Thaum lub sij hawm thib peb, qhov kub yuav nce mus rau sintering kub, qhov kub siab tshaj plaws thaum lub sij hawm sintering. Lub shrinkage yog ua tiav sai sai thaum cov kua theem tshwm ntawm tungsten carbide thiab porosity ntawm tungsten carbide txo.

4. Cua txias theem.

Cov cemented carbide tom qab sintering tuaj yeem raug tshem tawm ntawm lub qhov cub sintering thiab txias rau chav sov. Qee lub tuam txhab yuav siv cov khib nyiab pov tseg hauv qhov cub sintering rau kev siv thermal tshiab. Nyob rau ntawm no, raws li qhov kub thiab txias, qhov kawg microstructure ntawm cov hlau yog tsim.

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.