Tungsten Carbide

Cemented carbide lub tswv yim: cov khoom sib xyaw ua los ntawm cov hmoov hlau metallurgy uas muaj cov khoom siv hlau refractory (theem nyuaj) thiab cov hlau sib txuas (cov txheej txheem sib khi).

Lub matrix ntawm cemented carbide muaj ob qhov chaw: Ib feem yog hardened theem: Lwm qhov yog cov hlau sib txuas.

Lub hardened theem yog cov carbide ntawm cov hlau hloov nyob rau hauv lub sij hawm ntawm lub ntsiab lus, xws li tungsten carbide, titanium carbide, tantalum carbide, uas yog ib qho nyuaj heev thiab muaj ib tug melting point ntawm ntau tshaj 2000 ℃, qee qhov ntau tshaj 4000 ℃.Tsis tas li ntawd, kev hloov pauv hlau nitrides, borides, silicides kuj muaj cov khoom zoo sib xws thiab tuaj yeem siv los ua cov txheej txheem tawv hauv cemented carbide.Lub xub ntiag ntawm lub hardened theem txiav txim siab heev hardness thiab hnav tsis kam ntawm cov alloy.

Cov hlau sib txuas feem ntau yog cov hlau hlau, feem ntau yog cobalt thiab npib tsib xee.Rau kev tsim cov cemented carbide, cov khoom siv raw hmoov yog xaiv nrog qhov loj me ntawm 1 thiab 2 microns thiab qib siab ntawm purity.Cov ntaub ntawv raw yog dosed raws li tus qauv muaj pes tsawg leeg, ntxiv rau cawv los yog lwm yam xov xwm nyob rau hauv ib tug ntub pob zeb, ntub sib tsoo, thiaj li hais tias lawv tag nrho tov, crushed, qhuav, sieved thiab ntxiv rau siv quav ciab los yog cov pos hniav thiab lwm yam molding. cov neeg sawv cev, thiab ces qhuav, sieved thiab ua rau hauv ib tug sib tov.Tom qab ntawd cov sib tov yog granulated, nias, thiab rhuab mus rau ze lub melting point ntawm bonded hlau (1300 ~ 1500 ℃), lub hardened theem thiab cov hlau bonded yuav tsim ib tug eutectic alloy.Tom qab txias, lub hardened theem yog faib nyob rau hauv lub lattice muaj li ntawm cov hlau bonded thiab yog nyob ze rau ib leeg los tsim ib tug tag nrho.Lub hardness ntawm cemented carbide nyob ntawm lub hardening theem cov ntsiab lus thiab grain loj, piv txwv li lub siab dua lub hardening theem cov ntsiab lus thiab lub finer lub grain loj, lub hardness ntau dua.Lub toughness ntawm cemented carbide yog txiav txim siab los ntawm cov hlau sib txuas, thiab siab dua cov ntsiab lus ntawm cov hlau sib txuas, lub zog khoov ntau dua.

Cov yam ntxwv tseem ceeb ntawm cemented carbide:
1) High hardness, siab hnav tsis kam
2) High modulus ntawm elasticity
3) High compressive zog
4) Zoo tshuaj stability (acid, alkali, kub oxidation kuj)
5) Tsawg cuam tshuam toughness
6) Tsawg coefficient ntawm expansion, thermal thiab hluav taws xob conductivity zoo ib yam li hlau thiab nws alloys

Cemented carbide daim ntaub ntawv: cov cuab yeej siv niaj hnub, hnav cov ntaub ntawv tiv taus, kub kub thiab corrosion resistant cov ntaub ntawv.

Qhov zoo ntawm cov cuab yeej carbide (piv rau cov hlau alloy):
1) Exponentially, kaum ob lossis ntau pua zaus los txhim kho lub neej ntawm cov cuab yeej.
Hlau txiav cuab yeej lub neej tuaj yeem nce los ntawm 5-80 npaug, gage lub neej nce 20-150 zaug, pwm lub neej nce 50-100 zaug.
2) Nce hlau txiav ceev thiab crust drilling ceev exponentially thiab kaum tawm zaus.
3) Txhim kho qhov tseeb qhov tseeb thiab qhov chaw tiav ntawm machined qhov chaw.
4) Nws tuaj yeem ua cov txheej txheem nyuaj rau cov khoom siv xws li cov khoom siv hluav taws xob tiv thaiv tshav kub, cov nyhuv alloy thiab cov hlau hnyav ntxiv, uas nyuaj rau kev ua haujlwm los ntawm cov hlau ceev.
5) tuaj yeem ua rau qee yam corrosion-resistant lossis kub-resistant hnav-tiv taus qhov chaw, yog li txhim kho qhov tseeb thiab lub neej ntawm qee cov tshuab thiab cov cuab yeej.

Kev faib tawm ntawm Cemented Carbide:
1. WC-Co (tungsten laum) hom alloy: muaj li ntawm tungsten carbide thiab cobalt.Qee zaum hauv cov cuab yeej txiav (tej zaum kuj yog cov cuab yeej siv lead ua) ntxiv 2% lossis tsawg dua ntawm lwm cov carbide (tantalum carbide, niobium carbide, vanadium carbide, thiab lwm yam) raws li cov khoom ntxiv.High cobalt: 20-30%, nruab nrab cobalt: 10-15%, cobalt qis: 3-8%
2. WC-TiC-Co (tungsten-hlau-cobalt)-hom alloy.
Tsawg titanium alloy: 4-6% TiC, 9-15% Co
Nruab nrab Chin alloy: 10-20% TiC, 6-8% Co
High titanium alloy: 25-40% TiC, 4-6% Co
3.WC-TiC-TaC(NbC)-Co alloys.
WC-TiC-Co alloy muaj qhov kub zoo dua oxidation tsis kam thiab kuj zoo dua thermal shock cuam tshuam, yog li feem ntau muaj lub neej zoo dua.TiC: 5-15%, TaC (NbC): 2-10%, Co: 5-15%, tus so yog WC.
4. Steel cemented carbide: muaj li ntawm tungsten carbide los yog titanium carbide thiab carbon hlau los yog hlau alloy.
5. Titanium carbide raws li alloy: muaj cov pa roj carbon ntau dua titanium, nickel hlau thiab molybdenum hlau los yog molybdenum carbide (MoC).Tag nrho cov ntsiab lus ntawm nickel thiab molybdenum feem ntau yog 20-30%.

Carbide yuav siv tau los ua teb burr, CNC hniav, milling cutters, ncig riam, slitting riam, woodworking hniav, saw hniav, carbide rods, thiab lwm yam.