Kalmomin Hard Alloy (1)

Don inganta fahimtar rahotanni da rubuce-rubucen fasaha game da kayan aiki mai wuyar gaske, daidaita ma'anar kalmomi, da kuma bayyana ma'anar kalmomin fasaha a cikin labaran, muna nan don koyon sharuɗɗan gami.

Tungsten Carbide

Tungsten carbide yana nufin abubuwan da aka haɗa da su waɗanda suka ƙunshi carbides na ƙarfe masu jujjuyawar da masu ɗaure ƙarfe. Daga cikin carbides na ƙarfe da ake amfani da su a halin yanzu, tungsten carbide (WC), titanium carbide (TiC), da tantalum carbide (TaC) sune abubuwan da aka fi sani da su. Karfe na Cobalt ana amfani da shi sosai wajen samar da simintin carbide a matsayin mai ɗaure. Don wasu aikace-aikace na musamman, ana iya amfani da abubuwan ɗaure ƙarfe kamar nickel (Ni) da baƙin ƙarfe (Fe).

Yawan yawa

Maɗaukaki yana nufin ma'auni-zuwa-girma na abu, wanda kuma ake kira takamaiman nauyi. Ƙarfinsa kuma ya ƙunshi ƙarar pores a cikin kayan. Tungsten carbide (WC) yana da nauyin 15.7 g/cm³ kuma cobalt (Co) yana da nauyin 8.9 g/cm³. Sabili da haka, yayin da abun ciki na cobalt (Co) a cikin tungsten-cobalt alloys (WC-Co) ya ragu, gabaɗayan yawa zai ƙaru. Ko da yake yawan adadin titanium carbide (TiC) bai kai na tungsten carbide ba, bai wuce 4.9 g/cm3 kawai ba. Tare da wasu nau'o'in sinadarai na kayan, karuwa a cikin pores a cikin kayan yana haifar da raguwa a cikin yawa.

Tauri

Taurin yana nufin iyawar abu don tsayayya da nakasar filastik.

Vickers hardness (HV) ana amfani da shi sosai a duniya. Wannan hanyar auna taurin tana nufin ƙimar taurin da aka samu ta amfani da lu'u-lu'u don shiga saman samfurin don auna girman shigar a ƙarƙashin wani yanayin kaya. Rockwell hardness (HRA) wata hanyar auna taurin da aka saba amfani da ita. Yana amfani da zurfin shigar madaidaicin mazugi na lu'u-lu'u don auna taurin. Dukansu taurin Vickers da taurin Rockwell za a iya amfani da su don auna taurin simintin carbide, kuma ana iya canza su biyu zuwa juna.

Karfin lankwasawa

Ƙarfin lanƙwasawa kuma ana saninsa da ƙarfin karyewar juyi ko ƙarfin sassauƙa. Ana ƙara daɗaɗɗen ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan tallafi mai sauƙi a kan pivots biyu, sa'an nan kuma an yi amfani da kaya zuwa tsakiyar layi na biyu har sai daɗaɗɗen alloy ya rushe. Ana amfani da ƙimar da aka ƙididdige daga ma'aunin iska don nauyin da ake buƙata don karya, da kuma ɓangaren ɓangaren samfurin. A cikin tungsten-cobalt alloys (WC-Co), ƙarfin juzu'i yana ƙaruwa tare da abun ciki na cobalt (Co) a cikin tungsten-cobalt gami, amma ƙarfin flexural ya kai matsakaicin lokacin da abun ciki na cobalt (Co) ya kai kusan 15%. Ana auna ƙarfin sassauƙa ta hanyar ma'auni da yawa. Wannan darajar kuma za ta bambanta tare da lissafi na samfurin, yanayin yanayin (latsi), damuwa na ciki, da lahani na ciki na kayan. Sabili da haka, ƙarfin gyare-gyare shine kawai ma'auni na ƙarfin, kuma ba za a iya amfani da ƙididdiga masu ƙarfi a matsayin tushen zaɓin kayan aiki ba.

Porosity

Carbide da aka yi da siminti ana samar da shi ta hanyar aikin ƙarfe na foda ta hanyar latsawa da sintiri. Saboda yanayin hanyar, adadin porosity na iya zama a cikin tsarin ƙarfe na samfurin.

Ragewar porosity na iya inganta ingantaccen aikin samfurin gaba ɗaya. Matsa lamba sintering tsari ne mai tasiri wajen rage porosity.