Cov txheej txheem ntau lawm thiab molding txheej txheem ntawm cemented carbide pas nrig

Covcemented carbide pas nrigyog cov cemented carbide puag ncig pas nrig, tseem hu ua tungsten steel pas nrig, luv luv, tungsten steel round pas nrig lossis cemented carbide tus tswv cuab pas nrig. Cemented carbide yog cov khoom sib xyaw ua los ntawm cov khoom siv hlau refractory (theem nyuaj) thiab cov hlau sib txuas (lub sijhawm sib txuas) ua los ntawm cov hmoov hlau metallurgy. Tungsten carbide tseem hu ua tungsten steel, kuj hais lus, yog lub npe hauv zos ntawm qhov sib txawv.

Muaj ob txoj hauv kev rau kev tsim cov cemented carbide round rods: ib qho yog extrusion molding, thiab extrusion molding yog ib txoj hauv kev tsim cov pas nrig ntev. Yuav raug txiav mus rau txhua qhov ntev uas tus neeg siv xav tau thaum lub sijhawm extrusion txheej txheem. Txawm li cas los xij, qhov ntev tag nrho tsis tuaj yeem tshaj 350mm. Lwm qhov yog tuag molding, uas yog ib txoj hauv kev tsim cov khoom siv luv luv. Raws li lub npe qhia, carbide hmoov yog nias rau hauv cov duab nrog pwm. Cov khoom sib txuas nyuaj thiab cov hlau sib txuas ua los ntawm cov hlau refractory yog qhov tsis hloov pauv ntawm qhov kub ntawm 500 ° C los ntawm cov txheej txheem hmoov metallurgy, thiab tseem muaj qhov nyuaj siab ntawm 1000 ° C. Tungsten carbide yog dav siv nyob rau hauv corrosion thiab ib tug series ntawm zoo heev zog, tshwj xeeb tshaj yog nws muaj zog hardness thiab hnav tsis kam, txawm nyob rau hauv cov khoom siv, xws li tig cov cuab yeej, milling cov cuab yeej, txiav cov cuab yeej, xyaum, riam, thiab lwm yam, siv los txiav hlau, non-ferrous hlau, yas, tshuaj fiber, graphite, iav, pob zeb thiab zoo tib yam hlau. Nws kuj tseem siv tau rau kev txiav zeb, tshuab ziab khaub ncaws, Z tov khoom, tshuab pelletizing) - nias (nrog rau sab siab hydraulic xovxwm lossis extrusion xovxwm) - kub kub resistant steel, stainless hlau, siab manganese steel, cuab yeej hlau thiab lwm yam nyuaj sib tsoo ntub dej sib tsoo (degreasing rauv, integrated rauv los yog HIP tsis tshua muaj siab rauv).

Cov ntaub ntawv raw yog cov av ntub dej, qhuav, tov nrog cov kua nplaum tom qab sib txuam, ces qhuav los ntawm cov pwm pwm los yog extruded rau kev ntxhov siab, thiab thaum kawg tsim los ntawm degreasing thiab sintering los ua cov alloy tag nrho txoj kab uas hla puag ncig bar khoom. Pinching ob kawg yuav nkim qee yam khoom. Qhov ntev ntawm qhov ntev ntawm tungsten carbide me me txoj kab uas hla puag ncig pas nrig khoom, qhov tsis zoo ntawm extrusion ntau lawm ntawm cov khoom siv puag ncig yog tias lub voj voog ntau lawm ntev. Extrude 3mm hauv qab cylindrical sib tsoo los txhim kho cov linearity ntawm cov ntaub plaub puas. Tau kawg, cov teeb meem ntawm kev ncaj thiab roundness tuaj yeem txhim kho nrog kev sib tsoo cylindrical nyob rau theem tom ntej.

Lwm qhov yog pwm tsim, uas yog txoj kev ntawm cov pas nrig luv luv, raws li lub npe qhia, cov pwm yuav nias cov cemented carbide hmoov rau daim ntawv. Qhov zoo ntawm no cemented carbide bar molding txoj kev: lwm yam tuaj yeem molded ntawm ib lub sij hawm, uas yog txoj kev ntawm luv bar ntau lawm. Raws li lub npe qhia, nws yog molding, txo cov khib nyiab. Ua kom yooj yim rau txoj kab txiav thiab txuag cov khoom siv qhuav ntawm txoj kev extrusion. Lub sij hawm luv luv saum toj no tuaj yeem txuag tau 7-10 hnub rau cov neeg siv khoom.

Hais lus nruj me ntsis, isostatic pressing kuj yog kev tuag. Isostatic nias yog txoj hauv kev zoo tshaj plaws rau kev tsim cov khoom loj thiab ntev cemented carbide round rods. Los ntawm sab sauv thiab qis piston foob, lub twj tso kua mis siab yuav txhaj cov kua nruab nrab nruab nrab ntawm lub tog raj kheej siab thiab cov roj hmab siab, los ntawm cov roj hmab siab yuav hloov lub zog hauv chav ua kom cov cemented carbide hmoov molding.