Binciken abubuwan da aka haɗa na ciminti carbide sakawa

Kamar yadda yake tare da duk samfuran da mutum ya yi, masana'antar simintin ƙarfe mai nauyi yanke ruwan wukake yakamata ya fara magance matsalar albarkatun ƙasa, wato, ƙayyade abun da ke ciki da dabarar kayan ruwan. Yawancin ruwan wukake na yau an yi su ne da siminti carbide, wanda galibi ya ƙunshi tungsten carbide (WC) da cobalt (Co). WC barbashi ne mai wuya a cikin ruwa, kuma ana iya amfani da Co azaman ɗaure don siffanta ruwa.

Hanya mai sauƙi don canza kaddarorin simintin carbide ita ce canza girman hatsin barbashi na WC da aka yi amfani da su. Babban nau'in ƙwayar cuta (3-5 μ m) Taurin kayan carbide da aka yi da siminti wanda aka shirya ta barbashi na WC tare da C% yana da ƙasa da sauƙin sawa; Karamin girman barbashi (＜ 1 μm) ɓangarorin WC na iya samar da kayan gami mai ƙarfi tare da tauri mafi girma, mafi kyawun juriya, amma kuma mafi girma ga ɓarna. Lokacin da ake sarrafa kayan ƙarfe tare da taurin gaske, yin amfani da simintin siminti mai ƙyalƙyali na iya samun kyakkyawan sakamako na inji. A daya hannun, da m hatsi cemented carbide kayan aiki yana da mafi kyau aiki a cikin tsaka-tsaki yankan ko wasu machining cewa bukatar mafi girma taurin na kayan aiki.

Wata hanya don sarrafa halaye na siminti carbide abun ciki shine canza rabon WC zuwa abun ciki na Co. Idan aka kwatanta da WC, taurin Co ya fi ƙasa da ƙasa, amma taurin ya fi kyau. Saboda haka, rage abun ciki na Co zai haifar da mafi girma taurin ruwa. Tabbas, wannan ya sake haifar da matsalar ma'auni - mafi girma taurin ruwan wukake yana da mafi kyawun juriya, amma gaɓoɓin su kuma ya fi girma. Dangane da takamaiman nau'in sarrafawa, zaɓar girman hatsin WC da ya dace da rabon abun ciki na Co yana buƙatar ilimin kimiyya da ya dace da ƙwarewar sarrafawa.

Ta amfani da fasaha na kayan ƙwalƙwalwa, ana iya kaucewa sasantawa tsakanin ƙarfi da taurin ruwa zuwa wani wuri. Wannan fasaha, wacce manyan masana'antun kera kayan aiki na duniya suka yi amfani da ita sosai, ta hada da amfani da ma'aunin abun ciki na Co mafi girma a saman bakin ruwa fiye da na ciki. Musamman ma, ɓangaren waje na ruwa (kauri 15-25 μ m) Ƙara abun ciki na Co don samar da aiki mai kama da "yankin buffer", don haka ruwa zai iya tsayayya da wani tasiri ba tare da fashewa ba. Wannan yana bawa jikin kayan aiki damar samun kyawawan kyawawan kaddarorin da za'a iya samu kawai ta amfani da carbide da aka yi da siminti tare da ƙarfi mafi girma.

Da zarar girman barbashi, abun da ke ciki da sauran sigogin fasaha na kayan albarkatun ƙasa an ƙaddara, ana iya fara aiwatar da ainihin masana'anta na yankan abubuwan da aka saka. Da farko, sanya foda na tungsten, carbon foda da cobalt foda a cikin injin niƙa wanda ya kai girman injin wanki, a niƙa foda zuwa girman da ake buƙata, sannan a haɗa kowane nau'in kayan daidai gwargwado. A lokacin aikin niƙa, ana ƙara barasa da ruwa don shirya baƙar fata mai kauri. Sa'an nan kuma a saka slurry a cikin na'urar busar da guguwa, kuma ruwan da ke cikin slurry yana ƙafe don samun lumpy foda da adana.

A cikin tsarin shirye-shiryen na gaba, ana iya samun samfurin ruwan wukake. Na farko, an haɗa foda da aka shirya tare da polyethylene glycol (PEG). A matsayin filastik, PEG na iya haɗa foda na ɗan lokaci kamar kullu. Ana danna kayan a cikin siffar ruwa a cikin mutu. Dangane da hanyoyin latsa ruwa daban-daban, ana iya amfani da latsa axis guda ɗaya don latsawa, ko kuma ana iya amfani da latsa axis da yawa don danna siffar ruwan daga kusurwoyi daban-daban.

Bayan samun matsi maras kyau, an sanya shi a cikin babban tanderun da aka yi amfani da shi kuma an yi shi a babban zafin jiki. A cikin aikin sintering, PEG yana narkar da shi kuma a fitar da shi daga cakuda billet, yana barin simintin carbide da aka kammala. Lokacin da PEG ya narke, ruwan ruwa yana raguwa zuwa * girmansa na ƙarshe. Wannan matakin aiwatarwa yana buƙatar ingantaccen lissafin lissafi, saboda raguwar ruwan wukake ya bambanta bisa ga nau'ikan kayan abu daban-daban da ma'auni, kuma ana buƙatar juriyar juzu'in samfurin da aka gama a cikin microns da yawa.