Hais txog Tungsten-Cobalt Cemented Carbide

Raws li ib tug neeg sawv cev ntawm feem ntau siv cemented carbide, tungsten cobalt cemented carbide (YG hom cemented carbide) yog hais txog cov hlau uas muaj tungsten carbide raws li cov theem nyuaj thiab cobalt raws li qib cemented, lub npe lus Askiv yog tungsten cobalt cemented carbide, thiab lub npe hom yog tsim los ntawm YG thiab qhov feem pua ​​​​ntawm cov ntsiab lus cobalt nruab nrab.Lub npe hom muaj "YG" thiab feem pua ​​​​ntawm cov ntsiab lus cobalt nruab nrab, xws li YG6, YG8 thiab lwm yam.

Nyob rau hauv cov nqe lus ntawm kev ua tau zoo, YG cemented carbide combines qhov zoo ntawm tungsten carbide thiab cobalt, uas yog feem ntau xav txog nyob rau hauv lub siab hardness, zoo thermal conductivity, zoo cuam tshuam toughness, siab flexural zog thiab zoo heev txiav kuj.Txawm li cas los xij, nws yuav tsum raug sau tseg tias lub cev qhov ntsuas ntawm cov qib sib txawv ntawm YG cemented carbide sib txawv, xws li qhov ceev ntawm YG6 yog 14.6 ~ 15.0g / cm3, hardness 89.5HRA, flexural zog 1400MPa, cuam tshuam toughness 2.6J / cm2, coercivity 9.6 ~ 12.8KA / m, compressive zog 4600MPa;Qhov ceev ntawm YG8 yog 14.5 ~ 14.9g / cm3;Qhov ceev ntawm YG8 yog 14.5 ~ 14.9g / cm3;thiab qhov ceev ntawm YG8 yog 14.5 ~ 14.9g / cm3.YG8 muaj qhov ntom ntawm 14.5 ~ 14.9g / cm3, hardness ntawm 89HRA, flexural zog ntawm 1500MPa, cuam tshuam toughness ntawm 2.5J / cm2, coercivity ntawm 11.2 ~ 12.8KA / m, thiab lub zog compressive ntawm 4600MPaFeem ntau, nrog rau qhov nce ntawm cobalt cov ntsiab lus nyob rau hauv ib tug tej yam mob, lub alloy lub flexural thiab compressive zog thiab toughness yog zoo dua, thaum lub ceev thiab hardness yog qis dua.

Kev hnav tsis kam thiab tawv ntawm YG hom cemented carbide feem ntau yog ib khub ntawm lub cev tsis sib haum xeeb, uas feem ntau tshwm sim hauv cov hauv qab no: nyob rau hauv tej yam kev mob, nrog rau kev nce ntawm cobalt cov ntsiab lus los yog txo cov ntsiab lus ntawm tungsten, lub toughness ntawm cov alloy yog. zoo dua thiab hnav tsis kam yog qhov tsis zoo;Ntawm qhov tsis sib xws, nrog qhov nce ntawm tungsten cov ntsiab lus lossis txo cov ntsiab lus ntawm cobalt, cov cuab yeej abrasive ntawm cov hlau zoo dua thiab cov tawv tawv tsis zoo.Yuav kom daws tau qhov teeb meem ntawm kev tsis sib haum xeeb hnav tsis kam thiab toughness ntawm YG-hom cemented carbide, tus kws tshawb fawb ntawm Patent No. CN1234894C muab txoj kev tsim khoom tshiab, qhov zoo ntawm cov cuab yeej tsim khoom no yog: 1) Vim yog cov qauv tsis sib xws ntawm WC nplej, lub koom haum ntawm cemented carbide yog txhim kho (WC grain adjacency yog txo, Co theem faib yog ntau uniform, porosity yog txo, thiab tawg qhov chaw yog heev txo), yog li cov hnav tsis kam thiab toughness ntawm no alloy yog zoo dua li ntawm tib yam cobalt coarser-grained alloys;2) Kev siv cov hmoov zoo cobalt zoo dua li kev siv cov hmoov cobalt zoo tib yam (2-3μm), thiab lub zog ntawm cov hlau no tau txhim kho los ntawm 5 mus rau 10%, thaum qhov sib ntxiv ntawm (0.3-0.6wt%) TaC nce. nws hardness (HRA) los ntawm 0.2 mus rau 0.3, piv txwv li nws hnav tsis kam kuj tseem txhim kho.~ 10%, thiab tom qab ntxiv (0.3-0.6wt%) TaC, nws hardness (HRA) yog nce los ntawm 0.2-0.3, piv txwv li nws hnav tsis kam kuj tseem txhim kho.

Los ntawm qhov pom ntawm hom, raws li cov ntsiab lus sib txawv cobalt, tungsten-cobalt cemented carbide tuaj yeem muab faib ua qis-cobalt, nruab nrab-cobalt thiab high-cobalt alloys;Raws li cov nplej sib txawv ntawm tungsten carbide, nws tuaj yeem muab faib ua micro-grain, nplua-grain, nruab nrab-grain thiab coarse-grain alloys;Raws li kev siv sib txawv, nws tuaj yeem muab faib ua cov cuab yeej txiav, cov cuab yeej mining thiab cov cuab yeej hnav-resistant.

Los ntawm kev pom ntawm cov txheej txheem tsim khoom, cov kauj ruam ntawm kev npaj ntawm YG cemented carbide suav nrog tungsten carbide hmoov thiab cobalt hmoov los ntawm kev sib tsoo, ntub sib tsoo, ziab, granulation, nias thiab sib sau, de-forming tus neeg sawv cev, sintering thiab lwm yam.Lus Cim: Ob hom coarse thiab zoo hais ntawm WC hmoov yog siv rau batching, nyob rau hauv uas qhov luaj li cas ntawm coarse particle WC hmoov yog (20-30) μm, thiab cov particle loj ntawm nplua particle WC hmoov yog (1.2-1.8) ib m.

Los ntawm daim ntawv thov kev pom, tungsten thiab cobalt cemented carbide tuaj yeem siv los txiav cov hlau, cov hlau tsis muaj hlau thiab cov khoom tsis yog xim hlau, ntxiv rau kev tsim cov cuab yeej ntug, kos pwm, pwm pwm txias, nozzles, yob, sab saum toj rauj thiab lwm yam hnav-tiv taus cov cuab yeej thiab cov cuab yeej mining.