Monga woyimira wamba wa carbide wopangidwa ndi simenti, tungsten cobalt simenti carbide (YG mtundu wa simenti carbide) amatanthauza aloyi wopangidwa ndi tungsten carbide monga gawo lolimba ndi cobalt monga gawo simenti, dzina English ndi tungsten cobalt simenti carbide, ndi dzina lachidziwitso limapangidwa ndi YG komanso kuchuluka kwa pafupifupi cobalt.Dzinali lili ndi "YG" komanso kuchuluka kwa cobalt, monga YG6, YG8 ndi zina zotero.
Pankhani ya magwiridwe antchito, YG cemented carbide imaphatikiza zabwino za tungsten carbide ndi cobalt, zomwe zimawonetsedwa makamaka pakulimba kwambiri, kukhathamiritsa kwamafuta abwino, kulimba kwamphamvu, kulimba kwamphamvu kwambiri komanso kukana kwambiri kudula.Komabe, ziyenera kudziwidwa kuti zolozera zamagulu osiyanasiyana a YG simenti ya carbide ndizosiyana, monga kuchuluka kwa YG6 ndi 14.6 ~ 15.0g/cm3, kuuma 89.5HRA, flexural mphamvu 1400MPa, kulimba kwamphamvu 2.6J/cm2, kukakamiza 9.6 ~ 12.8KA/m, compressive mphamvu 4600MPa;kachulukidwe wa YG8 ndi 14.5 ~ 14.9g/cm3;kachulukidwe wa YG8 ndi 14.5 ~ 14.9g/cm3;ndipo kachulukidwe ka YG8 ndi 14.5 ~ 14.9g/cm3.YG8 ili ndi kachulukidwe ka 14.5 ~ 14.9g/cm3, kuuma kwa 89HRA, mphamvu yosunthika ya 1500MPa, kulimba kwamphamvu kwa 2.5J/cm2, kukakamiza kwa 11.2 ~ 12.8KA/m, ndi kukakamiza kwa 4600MPa.Nthawi zambiri, pakuwonjezeka kwa cobalt mumkhalidwe wina, mphamvu za alloy flexural ndi compressive ndi kulimba zimakhala bwino, pomwe kulimba ndi kulimba kumakhala kotsika.
Kukana kuvala komanso kulimba kwa mtundu wa YG simenti ya carbide nthawi zambiri imakhala matupi otsutsana, omwe amawonetsedwa motere: mumikhalidwe ina, ndi kuchuluka kwa cobalt kapena kuchepa kwa tungsten, kulimba kwa alloy ndi. bwino komanso kukana kuvala kumakhala kosauka;m'malo mwake, ndi kuchuluka kwa tungsten kapena kuchepa kwa cobalt, katundu wa abrasive wa alloy ndi wabwinoko ndipo kulimba kwake kumakhala kosauka.Pofuna kuthetsa vuto la kusagwirizana kwa kuvala kosagwirizana ndi kulimba kwa carbide ya YG-mtundu wa simenti, wofufuza wa Patent No. CN1234894C amapereka njira yatsopano yopangira, ubwino wa luso lopanga izi ndi: 1) Chifukwa cha mawonekedwe osakhala yunifolomu a WC njere, bungwe la simenti carbide ndi bwino (WC moyandikana tirigu amachepetsa, Co gawo kugawa ndi yunifolomu, porosity imachepa, ndipo ming'alu magwero amachepa kwambiri), kotero kukana kuvala ndi kulimba aloyi aloyi ndi bwino kuposa cobalt yemweyo coarser-grained aloyi;2) Kugwiritsa ntchito ufa wabwino wa cobalt ndikwabwino kuposa kugwiritsa ntchito ufa wamba wa cobalt (2-3μm), ndipo kulimba kwa alloy iyi kumakulitsidwa ndi 5 mpaka 10%, pomwe kuwonjezera kwa (0.3-0.6wt%) TaC kumawonjezera kuuma kwake (HRA) ndi 0.2 mpaka 0.3, mwachitsanzo, kukana kwake kumawonjezeranso.~ 10%, ndipo atatha kuwonjezera (0.3-0.6wt%) TaC, kuuma kwake (HRA) kumawonjezeka ndi 0.2-0.3, mwachitsanzo, kukana kwake kuvala kumalimbikitsidwanso.
Kuchokera pamalingaliro amitundu, malinga ndi zomwe zili ndi cobalt, tungsten-cobalt simenti ya carbide imatha kugawidwa kukhala otsika-cobalt, sing'anga-cobalt ndi high-cobalt alloys;molingana ndi mitundu yosiyanasiyana ya tungsten carbide, imatha kugawidwa m'magulu ang'onoang'ono, mapira, apakati-tirigu ndi aloyi ambewu;malinga ndi ntchito zosiyanasiyana, zitha kugawidwa kukhala zida zodulira, zida zamigodi ndi zida zosavala.
Potengera njira yopangira, masitepe okonzekera a YG simenti ya carbide amaphatikiza ufa wa tungsten carbide ndi ufa wa cobalt kudzera pa batching, kugaya chonyowa, kuyanika, granulation, kukanikiza ndi kupanga, de-forming agent, sintering ndi zina zotero.Zindikirani: Mitundu iwiri ya tinthu tating'onoting'ono ta WC ufa imagwiritsidwa ntchito pophatikizira, momwe tinthu tating'onoting'ono ta WC ufa ndi (20-30) μm, ndi kukula kwa tinthu tating'onoting'ono ta WC ndi (1.2-1.8) μm.
Pogwiritsa ntchito, tungsten ndi cobalt cemented carbide angagwiritsidwe ntchito kudula chitsulo, zitsulo zopanda chitsulo ndi zinthu zopanda zitsulo, kuwonjezera pa kupanga zida zam'mphepete, zojambula zojambula, zojambula zozizira, mphuno, masikono, nyundo zapamwamba ndi zida zina zosavala ndi zida zamigodi.
Nthawi yotumiza: Jul-21-2023