Dab tsi yog Cast Tungsten Carbide Powder

Cam khwb cia tungsten carbide hmoov muaj WC thiab W2C eutectic qauv uas nthuav tawm qhov tsaus grey tsos. Cam khwb cia tungsten carbide hmoov yog tsim los ntawm cov txheej txheem siab heev: hlau tungsten thiab tungsten carbide hmoov sib tov thiab ntim rau hauv lub nkoj graphite. Ua ke, lawv tau rhuab rau hauv lub qhov cub melting ntawm 2900 ° C thiab tuav rau ib lub sij hawm kom tau ib tug casting block uas muaj WC thiab W2C eutectic theem nrog ib tug grain loj ntawm 1 ~ 3 μm.

Nws pom zoo hnav thiab cuam tshuam tsis kam, nrog rau cov cuab yeej hardness siab, ntawm qhov kub thiab txias. Qhov ntau thiab tsawg ntawm tungsten carbide particle muaj li ntawm 0.038 hli txog 2.362 hli. Hardness: 93.0 ~ 93.7 HRA; micro-hardness: 2500 ~ 3000 kg / mm2; ceev: 16.5 g / cm3; melting point: 2525 ° C.

Lub cev ua tau zoo ntawm cov cam khwb cia tungsten carbide hmoov

Molar hnyav: 195.86 g / mo

Qhov ceev: 16-17 g / cm3

Melting Point: 2700-2880 ° C

Kub taw tes: 6000 ° C

Hardness: 93-93.7 HRA

Young's Modulus: 668-714 GPa

Poisson tus piv txwv: 0.24

Kev siv cov cam khwb cia tungsten carbide grits

1. Hnav nto (hnav-tiv taus) qhov chaw thiab txheej txheej. Cov khoom thiab cov txheej txheem uas ua rau fretting, abrasion, cavitation, thiab particle erosion xws li cov cuab yeej txiav, cov cuab yeej sib tsoo, cov cuab yeej ua liaj ua teb, thiab cov txheej tawv tawv.

2. Pob zeb diamond cuab yeej Matrix. Peb npaj-rau-infiltrate los yog kub xovxwm cam khwb cia tungsten carbide hmoov yog siv los ua cov hmoov matrix los tuav thiab txhawb lub pob zeb diamond txiav. Tus tuav tso cai qhov zoo tshaj plaws pob zeb diamond raug xav tau rau cov cuab yeej siv tau zoo.

Fabrication Methods ntawm cam khwb cia tungsten carbide hmoov

1. Thermal Spray txheej txheem. Cam khwb cia tungsten carbide girts tuaj yeem raug thermal sprayed los tsim cov tawv tawv txheej ntawm qhov chaw uas yuav tsum tau muaj zog hnav.

2. Infiltration. Cam khwb cia tungsten carbide, coarse tungsten hlau, los yog tungsten carbide hmoov yog infiltrated nrog ib tug kua hlau (xws li tooj liab-raws li alloy, bronze) los ua ib feem. Peb cov cam khwb cia tungsten carbide hmoov muaj peev xwm infiltration zoo heev thiab hnav cov yam ntxwv tso cai rau peb cov neeg siv khoom los kho qhov kev sib tw daws teeb meem kom muaj kev pab cuam lub neej thiab tsim kom yooj yim.

3. Hmoov Metallurgical (P/M). Cam khwb cia tungsten carbide hmoov yog nias rau hauv qhov chaw los ntawm kub nias thiab sintering.

4. Plasma Transferred Arc (PTA) Vuam. Vim yog qhov zoo tshaj plaws weldability ntawm cam khwb cia tungsten carbide hmoov, nws yog feem ntau siv rau cov khoom siv los ntawm PTA vuam txheej txheem.

5. Dip txheej. Coatings xws li cov pom nyob rau hauv electrodes, drilling cov cuab yeej, thiab qhov chaw koom nrog kev ua abrasive xov xwm yog dip-coated nrog cam khwb cia tungsten carbide muab ib tug nto tag nrog heev hardness thiab hnav tsis kam.