Cov txiaj ntsig ntawm kev kho cryogenic rau cov khoom siv dag zog ntawm cemented carbide

Mechanical Properties ntawmcemented carbideFeem ntau yog xav txog hardness, flexural zog, compressive zog, cuam tshuam toughness, qaug zog, thiab lwm yam.

Txawm hais tias kev kho cryogenic tuaj yeem txhim kho cov khoom siv ntawm cov cemented carbide yog qhov kev paub zoo tshaj plaws ntawm kev ua haujlwm ntawm kev siv tshuab cryogenic.Liu Yaj et al.ua kev kho cryogenic ntawm YW1carbide hniav.Cov txiaj ntsig tau pom tias tom qab kev kho mob cryogenic, microhardness ntawm no hom ntawmcarbidecov hniav tau nce los ntawm 1764HV rau 2263.7HV, thiab Rockwell hardness tau nce los ntawm 90HRA mus rau 92HRA.Jiang et al.tso YG8 cemented carbide nyob rau hauv qhov kub thiab txias ib puag ncig ntawm 77K rau kev kho mob cryogenic thiab pom tias nws hardness thiab compressive zog nce 4.9% thiab 10.1% feem.

Chen Zhenhua et al.kuj tau txais cov txiaj ntsig zoo sib xws tom qab kev kho cryogenic ntawm tib qib ntawmcemented carbide.Zhang Pingping muab tso rau YG6X nplua-grained cemented carbide nyob rau hauv lub thawv cryogenic rau kev kho mob cryogenic thiab pom tias nws lub zog khoov thiab quab yuam quab yuam tau nce 7.6% thiab 10.8% feem.Chen Hongwei ua ntej txiasYG15 cemented carbidethiab tom qab ntawd muab tso rau hauv cov kua nitrogen rau kev kho cryogenic.Cov txiaj ntsig tau pom tias piv nrog ua ntej kev kho cryogenic, khoov lub zog ntawmYG15 cemented carbidence 5.19%.Tsis tas li ntawd, tseem muaj cov ntaub ntawv qhia txog kev kho cryogenic txhim kho cov khoom siv xws li kev cuam tshuam toughness thiab qaug zog ntawm lub zog.cemented carbide.Tam sim no, cov kws tshawb fawb hauv tsev thiab txawv teb chaws cov kev tshawb fawb txog cov khoom siv ntawm cov cemented carbide tom qab kev kho cua sov feem ntau tsom rau ob yam: hardness (xws li Rockwell hardness thiab Vickers hardness) thiab flexural zog.Qib ntawm kev hloov pauv hauv kev ua tau zoo muaj qhov cuam tshuam loj.Daim duab 1 thiab 2 piav qhia txog cov kev hloov pauv hauv hardness thiab flexural zog ntawm WC-Co cemented carbide nrog Co cov ntsiab lus tom qab kev kho cryogenic, thiab lawv cov kev hloov pauv hloov tau tham.