Siv cov khoom lag luam ntawm lub siab tawv tungsten carbide thiab txhim kho nws cov tawv tawv, tib neeg siv cov khoom siv hlau ua kom sib txuas ua ke tungsten carbide ua ke, yog li cov khoom siv no muaj qhov nyuaj tshaj qhov uas muaj cov hlau loj. Carbide milling cutters muaj siab hardness, hnav tsis kam, Ib puag ncig ntawm cov khoom zoo xws li lub zog zoo thiab tawv, kub tsis kam thiab corrosion tsis kam, tshwj xeeb tshaj yog nws cov hardness siab thiab hnav tsis kam, tseem nyob tsis hloov txawm tias qhov kub ntawm 500 ℃, thiab tseem muaj qib siab ntawm 1000 ℃ hardness. Cov ntaub ntawv siv hauv cov cemented carbide yog siv dav siv los ua cov cuab yeej siv, xws li tig cov cuab yeej, milling cutters, phiaj xwm, kev tshau, tho txawv txiav, thiab lwm yam, rau kev txiav cam khwb cia hlau, hlau tsis muaj hlau, plastics, tshuaj fiber, graphite, iav, pob zeb thiab hlau dog dig. Nws tuaj yeem siv los txiav cov ntaub ntawv nyuaj-rau tshuab xws li kub-tiv taus hlau, stainless hlau, siab manganese steel, thiab cuab yeej hlau.
Qee qhov kev cuam tshuam uas cuam tshuam rau cov yam ntxwv thiab kev siv ntawm cemented carbide milling cutters suav nrog:
(1) Cov khoom siv ua haujlwm nyuaj. Xws li lwm cov ntaub ntawv hlau thiab cov ntaub ntawv nyuaj rau txheej txheem. Kev ua haujlwm tau zoo ntawm qee cov ntaub ntawv yog tsawg dua li 1/4 ntawm cov hlau, thiab tus nqi ntawm qee cov ntaub ntawv tuaj yeem siab txog li ntau pua nyiaj rau ib phaus.
(2) Qhov nce ntawm geometry ntawm workpieces ntau dua. Piv txwv li, nyias-walled workpieces thiab aerospace qhov chaw nrog cov duab puab.
(3) Qhov loj me me workpieces. Tshwj xeeb tshaj yog qhov kev thov rau hauv cov raj cua hnyav thiab ntau lub tshuab tshuab hnyav tau nce zuj zus. Tus nqi siab rau ib daim ntawm cov khoom ua haujlwm no tso cov kev xav tau siab rau lub tshuab ua haujlwm ntawm cemented carbide milling cutters.
(4) Kev nce qib tshwj xeeb kom zoo dua qub thiab cov kev ua tau zoo. Piv txwv li, qhov yuav tsum ua rau lub zog qaug zog ntawm nplaim ntu ntawm cov ntu ua tiav.
Kev tsom xam cov neeg txiav txim siab qhov zoo ntawm cemented carbide milling cutters:
(1) Hardness thiab toughness. Cemented carbide milling cutters muaj qhov zoo sib txawv hauv ob qho tib si hardness thiab tawv. Tungsten carbide (WC) nws tus kheej muaj lub siab tawv (ntau dua li corundum lossis alumina), thiab nws cov hardness tsis tshua muaj tsawg dua thaum tus kub ua haujlwm nce siab. Txawm li cas los xij, nws tsis muaj qhov muaj tawv tawv, uas yog qhov ua tau zoo rau kev txiav cov cuab yeej. Txhawm rau ua kom zoo dua lub siab hardness ntawm tungsten carbide thiab txhim kho nws cov tawv tawv, tib neeg siv cov khoom siv hlau ua haujlwm txhawm rau txhawm rau tungsten carbide ua ke, yog li cov khoom siv no muaj qhov nyuaj tshaj qhov uas muaj lub siab hlau, thiab tib lub sijhawm nws tuaj yeem tiv taus ntau txheej txheem txiav. Txiav quab yuam. Ib qho ntxiv, nws tuaj yeem tiv taus qhov siab txiav kub uas tsim los ntawm kev siv lub tshuab ua kom siab.
Yog li ntawd, qhov tsim nyog ntawm cemented carbide milling cutter kev ua tau zoo thiab cov kev ua tshwj xeeb yog nyob ntawm ntau qhov ntau ntawm cov txheej txheem thawj cov hmoov.
(2) Pulverizing tshuab ntawm cemented carbide milling cutter. Tungsten carbide hmoov tau los ntawm carburizing tungsten (W) hmoov. Cov yam ntxwv ntawm tungsten carbide hmoov (tshwj xeeb yog nws qhov loj me) feem ntau yog nyob ntawm qhov me me ntawm cov hmoov tungsten nyoos thiab qhov kub thiab lub sijhawm ntawm carburizing. Kev tswj tshuaj yog tseem ceeb heev, thiab cov pa roj carbon ntsiab lus yuav tsum khaws cia tsis tu ncua (ze rau qhov theoretical piv ntawm 6.13% los ntawm qhov hnyav). Txhawm rau tswj hwm qhov loj me ntawm cov hmoov los ntawm kev ua cov txheej txheem tom qab, ib qho me me ntawm vanadium thiab / lossis chromium tuaj yeem ntxiv ua ntej kev kho mob carburizing. Cov txheej txheem sib txawv thiab cov txheej txheem sib txawv ntawm kev siv cov cemented carbide milling cutters xav tau tshwj xeeb kev sib txuas ntawm tungsten carbide particle loj, cov ntsiab lus carbon, cov ntsiab lus vanadium thiab cov ntsiab lus chromium. Los ntawm cov kev hloov pauv ntawm cov kev sib txuas no, ntau yam hmoov sib txawv tungsten carbide hmoov tuaj yeem tsim tawm.
