Lub cev khoom ntawm tungsten carbide

Niaj hnub nimno technology muaj ntau yam kev siv rau cov cim alloy tungsten-cobalt. Vim li cas nws thiaj li nrov? Nov yog qee qhovlub cev muaj zog ntawm tungsten carbide. Tom qab nyeem nqe no koj yuav paub ntau ntxiv txog nws.

Hardness.

Peb txhua tus paub tias pob zeb diamond yog ib qho ntawm cov khoom siv ntuj tshaj plaws hauv ntiaj teb. Thaum lub hardness ntawm tungsten carbide yog thib ob rau pob zeb diamond.Hardness yog ib qho ntawm cov khoom tseem ceeb ntawm cov cemented carbide. Nrog rau qhov nce ntawm cobalt cov ntsiab lus nyob rau hauv cov hlau los yog qhov nce ntawm carbide grain loj, lub hardness ntawm cov alloy txo. Piv txwv li, thaum cobalt cov ntsiab lus ntawm industrial WC-Co nce los ntawm 2% mus rau 25%, lub hardness ntawm cov alloy txo los ntawm 93 mus txog 86. Rau txhua txhua 3% nce ntawm cobalt, hardness ntawm alloy txo los ntawm 1 degree. Refining lub grain loj ntawm tungsten carbide tuaj yeem txhim kho qhov hardness ntawm cov hlau.

Khoov zog.

Zoo li hardness, khoov lub zog yog ib qho ntawm cov khoom tseem ceeb ntawm cemented carbide. Muaj ntau ntau yam cuam tshuam rau lub zog dabtsi yog khoov ntawm cov alloy, Feem ntau hais lus, lub zog dabtsi yog khoov ntawm cov alloy nce nrog qhov nce ntawm cov ntsiab lus cobalt. Txawm li cas los xij, thaum cov ntsiab lus cobalt ntau dua 25%, qhov khoov lub zog poob qis nrog qhov nce ntawm cov ntsiab lus cobalt. Raws li kev lag luam WC-Co alloy muaj kev txhawj xeeb, qhov khoov lub zog ntawm cov hlau ib txwm nce nrog qhov nce ntawm cobalt cov ntsiab lus hauv thaj tsam ntawm 0-25%..

Compressive zog.

Lub zog compressive ntawm cemented carbide qhia lub peev xwm los tiv thaiv compression load.Nrog kev nce ntawm cobaltcov ntsiab lus thiab nce nrog cov nplej loj ntawm tungsten carbide theem hauv cov hlau tnws compressive zog ntawm WC-Co alloy txo. Yog li ntawd, cov nplua-grain alloy nrog qis cobalt cov ntsiab lus muaj zog dua compressive.

Impact toughness.

Impact toughness yog ib qho tseem ceeb kev ntsuas ntawm mining alloys, thiab nws kuj tseem muaj qhov tseem ceeb rau kev txiav cov cuab yeej nyob rau hauv hnyav hnyav. Qhov cuam tshuam toughness ntawm WC-Co alloy nce nrog nce ntawm cobalt cov ntsiab lus thiab cov nplej loj ntawm tungsten carbide. Yog li ntawd, feem ntau ntawm cov mining alloys yog coarse-grained alloys nrog siab cobalt ntsiab lus.

Sib nqus saturation. 

Tnws sib nqus induction siv ntawm cov alloy nce nrog qhov nce ntawm sab nraud magnetic teb. Thaum lub magnetic teb siv mus txog ib tug tej yam nqi, lub magnetic induction siv tsis tsub kom, uas yog, lub alloy tau mus txog magnetic saturation. Tus nqi sib nqus saturation ntawm cov hlau tsuas yog cuam tshuam nrog cov ntsiab lus cobalt hauv cov hlau. Yog li, cov hlau nplaum saturation tuaj yeem siv los xyuas qhov tsis muaj kev puas tsuaj ntawm cov hlau los yog txheeb xyuas seb puas muaj cov tsis sib nqus η l theem nyob rau hauv cov hlau uas paub muaj pes tsawg leeg.

Elastic modulus.

VimWCmuaj ib tug siab elastic modulus,zoo liWC- Co. Lub elastic modulus txo qis nrog qhov nce ntawm cobalt cov ntsiab lus hauv cov hlau, thiab cov nplej loj ntawm tungsten carbide hauv cov hlau tsis muaj qhov pom tseeb ntawm cov qauv elastic.With qhov nce ntawm kev pabcuam kub tnws elastic modulus ntawm alloy txo.

Thermal expansion coefficient.

Lub linear expansion coefficient ntawm WC-Co alloy nce nrog nce ntawm cobalt cov ntsiab lus. Txawm li cas los xij, qhov nthuav dav coefficient ntawm cov hlau tsis tshua muaj qis dua li cov hlau, uas yuav ua rau muaj kev sib txuas ntau dua thaum cov cuab yeej alloy yog inlaid thiab welded. Yog tias qhov ntsuas txias qeeb tsis tau ua, cov hlau feem ntau yuav tawg.

Txhua yam, tungsten carbide muaj kev ua haujlwm siab hauv nws lub cev. Yog vim li cas, TNws muaj feem xyuam rau lub cev ntawm cov cemented carbide tsis txwv raucov. Tnws cov yam ntxwv ntawm cov ntaub ntawv nrog txawv formulations rau kev siv tshwj xeeb kuj yuav txawv. Xav paub ntau ntxiv txog tungsten carbide txais tos ua raws li peb.