Cov hlau tungsten, uas nws lub npe yog muab los ntawm Swedish - tung (hnyav) thiab sten (pob zeb) yog siv nyob rau hauv daim ntawv ntawm cemented tungsten carbides.Cemented carbides los yog cov hlau nyuaj raws li lawv feem ntau dubbed yog ib chav kawm ntawm cov ntaub ntawv ua los ntawm 'cementing' nplej ntawm tungsten carbide nyob rau hauv ib tug binder matrix ntawm cov hlau cobalt los ntawm ib tug txheej txheem hu ua kua theem sintering.
Niaj hnub no tungsten carbide nplej ntau qhov sib txawv ntawm 0.5 microns mus rau ntau tshaj 5 micron nrog cov ntsiab lus cobalt uas tuaj yeem nce mus txog 30% los ntawm qhov hnyav.Tsis tas li ntawd, ntxiv lwm cov carbide kuj tuaj yeem sib txawv ntawm cov khoom kawg.
Qhov tshwm sim yog ib chav kawm ntawm cov ntaub ntawv uas yog tus cwj pwm los ntawm
Siab zog
Toughness
Siab hardness
Los ntawm kev sib txawv ntawm cov nplej loj ntawm tungsten carbide thiab cov ntsiab lus cobalt hauv matrix, thiab ntxiv lwm cov ntaub ntawv, engineers tau nkag mus rau ib chav kawm ntawm cov ntaub ntawv uas nws cov khoom tuaj yeem raug kho rau ntau yam kev siv engineering.Qhov no suav nrog cov cuab yeej siv thev naus laus zis, hnav cov khoom siv thiab cov cuab yeej siv rau kev tsim kho mining thiab roj thiab roj sector.
Cov khoom siv tungsten Carbide yog qhov tshwm sim ntawm cov txheej txheem hmoov metallurgy uas feem ntau siv tungsten carbide thiab cobalt hlau hmoov.Feem ntau, kev sib xyaw ntawm cov khoom sib xyaw yuav muaj li ntawm 4% cobalt mus rau 30% cobalt.
Qhov laj thawj tseem ceeb ntawm kev xaiv siv tungsten carbide yog ua kom zoo dua ntawm cov hardness siab uas cov ntaub ntawv no nthuav tawm yog li retarding tus nqi ntawm tus kheej cov khoom.Hmoov tsis, lub txim uas txuas rau siab hardness yog tsis muaj toughness los yog lub zog.Hmoov zoo, los ntawm kev xaiv cov khoom sib xyaw nrog cov ntsiab lus cobalt ntau dua, lub zog tuaj yeem ua tiav nrog cov tawv tawv.
Xaiv cov ntsiab lus qis cobalt rau cov ntawv thov uas cov khoom siv yuav tsis xav tias yuav muaj kev cuam tshuam, ua tiav siab hardness, siab hnav tsis kam.
Xaiv cov ntsiab lus cobalt siab yog tias daim ntawv thov cuam tshuam nrog kev poob siab lossis kev cuam tshuam thiab ua tiav qhov hnav tsis kam ntau dua li lwm cov ntaub ntawv tuaj yeem muab, ua ke nrog lub peev xwm los tiv thaiv kev puas tsuaj.
Post lub sij hawm: Lub Xya hli ntuj-29-2022