Hauv kev tsim khoom thiab kev siv cov cemented carbide stirular kaw, muaj ntau yam kev ua haujlwm ntawm lub taub hau cutter muaj qhov cuam tshuam zoo rau lub neej pabcuam. Vim tias qhov qis qis thiab qis weld lub zog ntawm vuam, lub ntsej muag hniav yog qee zaum scrapped ntawm lub taub hau cutter thiab u}} tig thaum lub sij hawm sawing. Yog li ntawd, txhim kho thiab txhim kho lub vuam zoo yog qhov tseem ceeb tshaj plaws rau kev txhim kho cov hniav pom kev zoo, thiab ntev lub neej pabcuam ntawm lub ntsej muag pom.
1. Ua rau ntawm riam taub taub hau tawg thiab u -} tig
Lub vuam ntawm lub tungsten carbide stirular pom cov hniav yog welded nrog rhuab rau 780℃~ 920℃thiab nyiaj vuam hlau los ntawm cov nyiaj hlau los ntawm cov kuab tshuaj. Nws yog txawv ntawm qhov vuam ntawm siab {{}} ceev steel cutter, thiab nws yog tus cwj pwm ceev steel txiav nrog cov tshuaj sib txawv thiab cov khoom siv tshuab hluav taws xob. Vim tias qhov sib txawv ntawm cov hluav taws xob kev nthuav dav coefficients ntawm cov hlau thiab cov cua txias lossis cua txias thiab txias dua thiab ua rau muaj kev nthuav dav ntau dhau los, thiab tawg rau hauv cov hniav cutter.
Vuam cracks ntawm cemented carbide yog tshwm sim los ntawm kev siv kev ntxhov siab ntau dhau. Tom qab cua sov txaus, lub chaw vuam pib txias, cov yas sib luag, thiab cov kev nthuav dav carbide, thiab ua rau muaj kev ntxhib ntawm shrinkage ntawm cov hlau thiab cemented carbide. Qhov no yog qhia hauv daim duab 1. Raws li ib qho tshwm sim ntawm kev sib tw me ntsis, muaj kev nyuaj siab tensile, thiab yog tias tsis tau daws kom haum, cov kab nrib pleb tuaj yeem tshwm sim hauv alloy cov ntawv txheeb. Txoj kev los txo cov kev ntxhov siab no yog ntxiv rau kev them nyiaj ntau dua
Thaum lub tungsten carbide me ntsis yog rhuab rau ntau dua 900℃hauv cov huab cua, thiab yog txo cov khoom ntiag tug ntawm cov alloy ntsis thiab yog li txo cov vuam lub zog. Ua ntej vuam, cov oxide nplai tsim los ntawm qhov kub siab yuav tsum tau muab tshem tawm kom txhim kho cov vuam zoo.
Ib qho ntxiv, cov cua kub muaj tus nqi muaj qhov cuam tshuam tseem ceeb rau kev vuam zoo. Cov cua kub ceev yuav ua rau tawg thiab tsis sib xws vuam ntawm tungsten carbide khoom (ib txhia yog welded zoo thiab ib txhia tsis muaj zog welded zoo), yog li txo lub vuam lub zog. Yog li ntawd, tom qab tau mus txog kev sib tw kub, raws li qhov loj me ntawm alloy cutter taub hau, nws yuav tsum tau ceev kom sov rau 10 ~ 30s los ua kom sov ntawm welded koom kev hnav khaub ncaws. Yog tias cua sov dhau qeeb, nws yuav ua rau oxidation nyob rau saum npoo ntawm welded sib koom tes, thiab vim li cas los xij, lub zog vuam tseem yuav yog Redu
2. Cov teeb meem uas yuav tsum tau them siab rau
Thaum vuam hniav ntawm alloy vas pom pob, mloog yuav tsum tau them rau cov teeb meem uas yuav ua rau muaj kev sib tsoo, thiab ntsuas kev ntsuas yuav tsum tau tsim kom tau txais vuam zoo.
Npaj npaj ua ntej vuam:
(1) Ntxuav ntawm rab riam grooves, tu ntawm hniav burrs thiab grease teev;
(2) ntxuav lub carbide cutter taub hau kom tshem cov oxide teev rau ntawm cutter taub hau ua kom nws yog xim hlau.
Strictly ua raws li cov txheej txheem vuam:
(1) Cov Weld yuav tsum tau sau kom nws muaj lub zog txaus;
(2) Cov cua sov yuav tsum muaj khaub ncaws hnav;
(3) Tsis pub cov kab nrib pleb uas tau tso cai rau ntawm lub taub hau cutter. Vim tias muaj cov kab nrib pleb yuav txo qhov kev txiav kev ua tau zoo ntawm lub cuab tam.