Pores bayan Sintering

Carbide da aka yi da siminti wani nau'in fili ne wanda ya ƙunshi tungsten daidai da carbon, wanda ke da taurin kusa da lu'u-lu'u. Carbide da aka yi da siminti yana da babban tauri da taurin gaske a lokaci guda. Carbide da aka yi da siminti an yi shi ne ta hanyar ƙarfe na foda, kuma sintering shine mafi mahimmancin tsari yayin kera samfurin siminti na siminti. Yana da sauƙi don haifar da pores bayan tungsten carbide sintering idan ba a sarrafa shi da kyau ba. A cikin wannan labarin, za ku sami wasu bayanai game da pores bayan tungsten carbide sintering.

An haxa foda na tungsten carbide da foda mai ɗaure a wani kaso. Daga nan sai a sanya foda mai gauraya ta zama koren dantse bayan da aka jika a cikin injin niƙa, a bushe da bushewa, da kuma murɗawa. Koren tungsten carbide compacts an ƙera su a cikin tanderun HIP.

Ana iya raba babban tsari na sintering zuwa matakai hudu. Su ne kau da gyare-gyaren wakili da pre-sintering mataki, m-lokaci sintering mataki, ruwa-lokaci sintering mataki, da sanyaya sintering mataki. A lokacin sintering, zafin jiki yana karuwa a hankali. A cikin masana'antu, akwai hanyoyin gama gari guda biyu don sintiri. Daya shine hydrogen sintering, a cikin abin da abun da ke ciki na sassa ana sarrafa ta lokaci dauki motsin rai a hydrogen da yanayi matsa lamba. Dayan kuma shi ne vacuum sintering, wanda ke amfani da yanayi mara kyau ko ragi. Matsin iskar gas yana sarrafa simintin carbide abun da ke ciki ta hanyar rage jinkirin motsin motsi.

Sai kawai lokacin da ma'aikata ke sarrafa kowane mataki a hankali, samfuran ƙarshe na tungsten carbide za su iya samun microstructure da abubuwan sinadaran da ake so. Wasu pores na iya wanzuwa bayan sintiri. Ɗaya daga cikin mahimman dalilai shine game da zafin jiki na sintering. Idan yanayin zafi ya tashi da sauri, ko kuma zafin zafin jiki ya yi yawa, haɓakar hatsi da motsi za su kasance marasa daidaituwa, yana haifar da haɓakar pores. Wani dalili mai mahimmanci shine wakilin kafa. Dole ne a cire abin da aka ɗaure kafin sintering. In ba haka ba, wakili mai kafa zai yi rauni a lokacin karuwar zafin jiki, wanda zai haifar da pores.

Idan kuna sha'awar samfuran carbide tungsten kuma kuna son ƙarin bayani da cikakkun bayanai, zaku iya tuntuɓar mu ta waya ko wasiƙa a hagu, ko Aika wasiƙun Amurka a kasan shafin.