Dab tsi yog tungsten carbide?

Tungsten carbide, los yog cemented carbide, uas tseem hu ua hard alloy, tau lees paub tias yog ib qho ntawm cov khoom siv tawv tshaj plaws.s hauv ntiaj teb no. Tiag tiag, nws yog hlau, tab sis sib txuaskev ua tungsten, cobalt, thiab lwm yam hlau. Qhov siab tshaj plaws hardness tungsten carbide ua tam sim no yog nyob ib ncig ntawm 94 HRA, ntsuas los ntawm Rockwell A txoj kev. Ib qho tseem ceeb tshaj plaws muaj pes tsawg leegs tungsten carbide yog tungsten, uas muaj qhov siab tshaj plaws melting point ntawm tag nrho cov hlau. Cobalt ua raws li kev sib khi hauv cov hlau matrix no thiab txhim khos khoov lub zog ntawm tungsten carbide. Vim tias muaj kev ua haujlwm siab ntawm tungsten carbide, nws yog cov khoom siv zoo tshaj plaws rau ntau qhov kev lag luam, xws li tungsten carbide inserts, carbide rods thiab kawg mills rau CNC tej cuab yeej; txiav hniav rau ntawv txiav, cardboard txiav, thiab lwm yam; tungsten carbide taub hau tuag, ntsia thawv tuag, kos duab tuag rau daim ntawv thov hnav tsis kam; tungsten carbide pom cov lus qhia, carbide daim hlau, carbide strips rau txiav thiab hnav daim ntawv thov; tungsten carbide nyees khawm, HPGR studs, carbide mining inserts rau drilling teb. Cov khoom siv tungsten carbide tau dav siv yog li nws kuj hu ua“cov hniav rau kev lag luam”.

Dab tsi yog cov txheej txheem ntau lawm rau tungsten carbide?

1. Thawj kauj ruam los ua cov khoom tungsten carbide, yog ua cov hmoov. Cov hmoov yog kev sib xyaw ntawm WC thiab Cobalt, lawv sib xyaw ua ke hauv ib qho piv txwv. Piv txwv li, yog tias cov neeg siv khoom xav tau tungsten carbide taub hau tuag, xav carbide qib YG20, kom muaj nuj nqis 100 kilos. Tom qab ntawd cov hmoov nplej yuav sib tov ib ncig ntawm 18kgs Cobalt hmoov nrog 80kgs WC hmoov, qhov sib npaug ntawm 2kgs yog lwm cov hmoov hlau uas yuav muab ntxiv rau hauv raws li lub tuam txhab daim ntawv qhia rau qib YG20. Tag nrho cov hmoov yuav muab tso rau hauv lub tshuab milling. Muaj ntau lub peev xwm ntawm cov tshuab milling, xws li 5kgs rau cov qauv, 25kgs, 50kgs, 100kgs, lossis loj dua.

2. Tom qab hmoov sib tov, cov kauj ruam tom ntej yog txau thiab ziab. Nyob rau hauv Zhuzhou Better Tungsten Carbide Company, siv ntauwd tshuaj tsuag, uas yuav txhim kho lub cev thiab tshuaj ua haujlwm ntawm tungsten carbide hmoov. Hmoov ua nrog Spray ntauwd muaj kev ua tau zoo dua li lwm lub tshuab. Tom qab ua tiav cov txheej txheem no, cov hmoov yog nyob rau hauv“npaj-rau-nias” mob.

3. Cov hmoov yuav nias tom qab lub“npaj-rau-nias” hmoov yog kuaj OK. Muaj ntau txoj kev nias, los yog peb hais txawv txoj kev ntawm cov khoom tungsten carbide. Piv txwv li, yog tias lub Hoobkas tsim cov tungsten carbide pom cov lus qhia, yuav siv lub tshuab pib xovxwm; yog hais tias yuav tsum tau ib tug loj tungsten carbide tuag, ib nrab phau ntawv nias tshuab yuav raug siv. Kuj tseem muaj lwm txoj hauv kev tsim cov khoom tungsten carbide, xws li txias isostatic nias (lub npe luv yog CIP), thiab tshuab extrusion.

4. Sintering yog cov txheej txheem tom qab nias, nws tseem yog txheej txheem kawg los tsim cov tungsten carbide hlau uas tuaj yeem siv los ua cov hardness siab thiab siab zog engineering hlau rau txiav, hnav-tiv taus, drilling, lossis lwm yam kev siv. Qhov kub ntawm sintering yog siab txog 1400 centigrade. Rau qhov sib txawv, qhov kub thiab txias yuav muaj qee qhov sib txawv. Nyob rau ntawm qhov kub thiab txias, lub binder tuaj yeem sib xyaw cov hmoov WC thiab tsim cov qauv muaj zog. Cov txheej txheem sintering tuaj yeem ua tiav nrog lossis tsis muaj lub tshuab siab isostatic gas siab (HIP).

Cov txheej txheem saum toj no yog cov lus piav qhia yooj yim ntawm cov txheej txheem tsim cov cemented carbide. Txawm hais tias zoo li yooj yim, tungsten carbide ntau lawm yog ib qho kev lag luam sib sau ua ke. Nws tsis yog yooj yim los tsim cov khoom tsim nyog tungsten carbide. Tungsten yog ib yam khoom siv tsis tau txuas ntxiv dua tshiab, ib zaug siv, nws tsis tuaj yeem tsim dua hauv lub sijhawm luv luv. Saib xyuas cov peev txheej muaj txiaj ntsig, xyuas kom txhua pawg ntawm tungsten carbide cov khoom tsim nyog ua ntej ncav cuag tes ntawm cov neeg siv khoom, yog ib qho laj thawj tseem ceeb uas thawb peb kom ua tau zoo dua. Txuas ntxiv mus, txuas ntxiv txhim kho!