Pores pambuyo Sintering

Simenti carbide ndi mtundu wa pawiri wopangidwa ofanana tungsten ndi carbon, amene ali ndi kuuma pafupi diamondi. Carbide yokhala ndi simenti imakhala yolimba kwambiri komanso yolimba kwambiri nthawi yomweyo. Carbide yopangidwa ndi simenti imapangidwa ndi zitsulo za ufa, ndipo sintering ndiyo njira yofunika kwambiri popanga mankhwala opangidwa ndi simenti. Ndizosavuta kuyambitsa pores pambuyo pa tungsten carbide sintering ngati sichikuyendetsedwa bwino. M'nkhaniyi, mupeza zambiri za pores pambuyo tungsten carbide sintering.

Tungsten carbide ufa ndi binder ufa zimasakanizidwa mu gawo linalake. Kenako ufa wosakanizawo umapangidwa kukhala wobiriwira wobiriwira pambuyo pa mphero yonyowa mu makina opangira mphero, kuyanika kutsitsi, ndi kuphatikizika. Mitundu yobiriwira ya tungsten carbide imayikidwa mu ng'anjo ya HIP.

Waukulu sintering ndondomeko akhoza kugawidwa mu magawo anayi. Iwo ndi kuchotsa akamaumba wothandizila ndi chisanadze sintering siteji, olimba gawo sintering siteji, madzi-gawo sintering siteji, ndi kuzirala sintering siteji. Pa sintering, kutentha kumawonjezeka pang'onopang'ono. M'mafakitale, pali njira ziwiri zodziwika bwino za sintering. Imodzi ndi sintering wa hydrogen, momwe zigawo zake zimayendetsedwa ndi gawo reaction kinetics mu hydrogen ndi kuthamanga kwa mumlengalenga. Ndipo ina ndi vacuum sintering, yomwe ikugwiritsa ntchito malo opanda vacuum kapena malo ocheperako. Kuthamanga kwa gasi kumawongolera kapangidwe ka simenti ya carbide pochepetsa zomwe zimachitika.

Pokhapokha ogwira ntchito amayang'anira gawo lililonse mosamala, zinthu zomaliza za tungsten carbide zimatha kupeza mawonekedwe ofunikira komanso kapangidwe kake. Ena pores angakhalepo pambuyo sintering. Chimodzi mwa zifukwa zofunika ndi za sintering kutentha. Ngati kutentha kumakwera mofulumira kwambiri, kapena kutentha kwa sintering kuli kwakukulu kwambiri, kukula kwa tirigu ndi kayendetsedwe kake kumakhala kosagwirizana, zomwe zimapangitsa kuti pores apangidwe. Chifukwa china chachikulu ndi kupanga wothandizira. The binder ayenera kuchotsedwa pamaso sintering. Kupanda kutero, wopangirayo amatha kusinthasintha pakuwonjezeka kwa kutentha kwa sintering, zomwe zimabweretsa pores.

Ngati muli ndi chidwi ndi zinthu za tungsten carbide ndipo mukufuna zambiri ndi zambiri, mutha KULUMIKIZANA NAFE pa lamya kapena makalata kumanzere, kapena TITUMIZANI MAIME pansi pa tsamba.