Kalmomin Hard Alloy (2)

Decarbonization

Bayan sikerar da siminti carbide, abun cikin carbon bai isa ba.

Lokacin da samfurin ya ƙare, nama yana canzawa daga WC-Co zuwa W2CCo2 ko W3CCo3. Madaidaicin abun ciki na carbon tungsten carbide a cikin siminti carbide (WC) shine 6.13% ta nauyi. Lokacin da abun cikin carbon ya yi ƙasa da ƙasa, za a sami tsarin ƙarancin carbon a cikin samfurin. Decarburization yana rage ƙarfin simintin carbide tungsten kuma yana sa shi da ƙarfi.

Carburization

Yana nufin wuce haddi na carbon bayan sintering da siminti carbide. Madaidaicin abun ciki na carbon tungsten carbide a cikin siminti carbide (WC) shine 6.13% ta nauyi. Lokacin da abun ciki na carbon ya yi girma sosai, tsarin da aka bayyana carburized zai bayyana a cikin samfurin. Za a sami gagarumin wuce haddi na carbon kyauta a cikin samfurin. Carbon kyauta yana rage ƙarfi da juriya na carbide tungsten. Nau'in nau'in C a cikin gano lokaci-lokaci yana nuna matakin carburization.

Tilastawa

Ƙarfin tilastawa shine ragowar ƙarfin maganadisu da aka auna ta hanyar magnetizing kayan maganadisu a cikin siminti mai siminti zuwa cikakken yanayin sa'an nan kuma lalata shi. Akwai dangantaka kai tsaye tsakanin matsakaicin girman barbashi na simintin carbide lokaci da kuma tilastawa. Mafi kyawun matsakaicin girman barbashi na lokacin magnetized, mafi girman ƙimar coercivity.

Magnetic jikewa

Cobalt (Co) magnetic ne, yayin da tungsten carbide (WC), titanium carbide (TiC), da tantalum carbide (TaC) ba su da ƙarfi. Sabili da haka, ta hanyar auna ma'aunin magnetic saturation na cobalt da farko a cikin wani abu sannan kuma kwatanta shi da daidaitaccen ƙimar samfurin cobalt mai tsabta, tunda magnetic jikewa yana shafar abubuwan alloying, ana iya samun matakin alloying na lokaci mai ɗaure cobalt. . Ana iya auna kowane canje-canje a lokacin ɗaure. Tun da carbon yana taka muhimmiyar rawa wajen sarrafa abun da ke ciki, ana iya amfani da wannan hanyar don tantance karkacewa daga ingantaccen abun ciki na carbon. Ƙananan ƙimar jikewar maganadisu suna nuna ƙarancin abun ciki na carbon da yuwuwar lalatawar. Babban ƙimar jikewar maganadisu suna nuna kasancewar carbon ɗin kyauta da carburization.

Cobalt Pool

Bayan an daidaita ma'aunin ƙarfe na cobalt (Co) da kuma tungsten carbide, za a iya samar da ƙarin cobalt, wanda wani lamari ne da aka sani da "cobalt pooling". Wannan shi ne yafi saboda yayin aikin HIP (Pressure Sintering), yanayin zafin jiki ya yi ƙasa da ƙasa kuma kayan suna haifar da ƙarancin yawa, ko kuma an cika pores da cobalt. Ƙayyade girman tafkin cobalt ta hanyar kwatanta hotunan ƙarfe. Kasancewar tafkin cobalt a cikin siminti carbide yana rinjayar juriya da ƙarfin kayan.

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.