① High hardness: cemented carbide cuab tam yog ua los ntawm carbide nrog siab hardness thiab melting point (hu ua nyuaj theem) thiab hlau binder (hu ua bonding theem) los ntawm hmoov metallurgy txoj kev, nws hardness mus txog 89 ~ 93HRA, ntau dua li high-ceev hlau, ntawm 5400C, qhov hardness tseem tuaj yeem ncav cuag 82 ~ 87HRA, thiab high-speed steel hardness ntawm chav tsev kub (83 ~ 86HRA) tib yam.Tus nqi hardness ntawm cemented carbide sib txawv nrog cov xwm, kom muaj nuj nqis, particle loj thiab cov ntsiab lus ntawm cov hlau bonding theem, thiab feem ntau txo nrog qhov nce ntawm cov ntsiab lus ntawm cov hlau bonding theem.Lub hardness ntawm YT alloy yog siab dua li ntawm YG alloy thaum cov ntsiab lus ntawm kev sib txuas theem yog tib yam, thiab cov alloy nrog TaC (NbC) muaj siab kub hardness.
② Bending zog thiab toughness: lub zog dabtsi yog khoov ntawm feem ntau siv cemented carbide yog nyob rau hauv thaj tsam ntawm 900 ~ 1500MPa.Qhov siab dua cov ntsiab lus ntawm cov hlau sib txuas theem, qhov siab dua qhov khoov lub zog.Thaum cov ntsiab lus ntawm cov nplaum yog tib yam, lub zog ntawm YG (WC-Co) alloy yog siab dua li ntawm YT (WC-TiC-Co) alloy, thiab lub zog txo nrog qhov nce ntawm TiC cov ntsiab lus.Tungsten carbide yog cov khoom siv nkig, thiab nws qhov cuam tshuam toughness ntawm chav tsev kub tsuas yog 1/30 txog 1/8 ntawm high-speed steel.
(3) Feem ntau siv cov cuab yeej carbide
YG alloys feem ntau yog siv los ua cov hlau cam khwb cia, cov hlau tsis muaj hlau thiab cov khoom tsis yog hlau.Fine-grain carbide (xws li YG3X, YG6X) nyob rau hauv tib tus nqi ntawm cobalt tshaj cov nplej hardness thiab hnav tsis kam yog siab dua, haum rau kev ua tej yam tshwj xeeb nyuaj cam khwb cia hlau, austenitic stainless hlau, tshav kub-resistant alloy, titanium alloy, nyuaj bronze. thiab hnav-resistant cov ntaub ntawv rwb thaiv tsev.
Qhov zoo tshaj plaws ntawm YT chav kawm cemented carbide yog siab hardness, zoo tshav kub tsis kam, kub hardness thiab compressive zog tshaj YG chav kawm ntawv, zoo oxidation kuj.Yog li ntawd, thaum rab riam yuav tsum muaj kev tiv thaiv kub thiab hnav tsis kam, cov khoom lag luam nrog cov ntsiab lus TiC siab dua yuav tsum raug xaiv.YT alloy yog tsim rau kev ua cov ntaub ntawv yas xws li hlau, tab sis tsis haum rau kev ua cov titanium alloy, silicon aluminium alloy.
YW alloys muaj cov khoom ntawm YG thiab YT alloys, thiab muaj cov khoom zoo.Nws tuaj yeem siv rau kev ua cov hlau, cam khwb cia hlau thiab cov hlau tsis muaj hlau.Cov alloys zoo li no, yog tias muaj cov ntsiab lus cobalt kom zoo, tuaj yeem muaj zog heev thiab tuaj yeem siv rau kev ua haujlwm ntxhib thiab sib cuam tshuam ntawm ntau yam khoom nyuaj.
Post lub sij hawm: Dec-04-2023