(1) High hardness, hnav tsis kam thiab liab-hardness
Cemented carbide hardness ntawm chav tsev kub tuaj yeem ncav cuag 86 ~ 93HRA, sib npaug rau 69 ~ 81HRC.Nyob rau hauv 900 ~ 1000 ℃ muaj peev xwm tuav tau siab hardness, thiab zoo heev hnav tsis kam.Piv nrog cov cuab yeej siv ceev ceev, kev txiav ceev tuaj yeem yog 4 mus rau 7 npaug siab dua, lub neej 5 mus rau 80 npaug ntev dua, tuaj yeem txiav cov ntaub ntawv nyuaj nrog hardness txog 50HRC.
(2) Lub zog, siab modulus ntawm elasticity
Lub zog compressive ntawm cemented carbide mus txog 6000MPa, elastic modulus ntawm (4 ~ 7) × 105MPa, yog siab tshaj cov hlau ceev.Txawm li cas los xij, nws lub zog flexural qis dua, feem ntau 1000 txog 3000 MPa.
(3) Corrosion kuj, oxidation kuj zoo
Feem ntau zoo tiv thaiv corrosion ntawm huab cua, acid, alkali, thiab lwm yam, tsis yooj yim rau oxidation.
(4) Me me coefficient ntawm linear expansion
Cov duab ruaj khov thiab qhov loj me thaum ua haujlwm.
(5) Cov khoom tsim tsis tau ua tiav thiab rov ua dua tshiab
Vim hais tias ntawm qhov siab hardness thiab brittleness ntawm cemented carbide, tsis muaj kev txiav los yog regrinding tom qab hmoov metallurgy txoj kev thiab sintering, thiab thaum nws yog tsim nyog rau rework, tsuas yog hluav taws xob machining xws li EDM, hlau txiav, electrolytic sib tsoo los yog tshwj xeeb sib tsoo log yuav siv tau. .Feem ntau ib qho kev qhia tshwj xeeb ntawm cov khoom ua los ntawm cov cemented carbide yog brazed, bonded los yog mechanically clamped ntawm lub cuab yeej lub cev lossis pwm tshwj xeeb rau kev siv.
Post lub sij hawm: Jun-11-2023
