Ku zo ku koyi game da HSS
Karfe mai sauri (HSS) ƙarfe ne mai ƙarfi, juriyar lalacewa da kuma juriyar zafi, wanda kuma aka sani da ƙarfe mai iska ko ƙarfe mai kaifi, ma'ana yana taurare ko da lokacin da aka sanyaya shi a cikin iska yayin kashewa kuma yana da kaifi. Ana kuma kiransa farin ƙarfe.
Karfe mai sauri ƙarfe ne mai haɗakar ƙarfe mai hadaddun sinadarai wanda ke ɗauke da abubuwan da ke samar da carbide kamar tungsten, molybdenum, chromium, vanadium da cobalt. Jimillar abubuwan da ke haɗa ƙarfe ya kai kimanin 10 zuwa 25%. Yana iya riƙe tauri mai yawa a ƙarƙashin zafi mai zafi (kimanin 500℃) a cikin yankewa mai sauri, HRC na iya kaiwa sama da 60. Wannan shine mafi mahimmancin halayyar HSS - tauri mai ja. Kuma ƙarfe na kayan aikin carbon ta hanyar kashewa da rage zafin jiki, a zafin ɗaki, kodayake akwai tauri mai yawa, amma lokacin da zafin ya fi 200℃, tauri zai ragu sosai, a cikin 500℃ tauri ya faɗi zuwa irin wannan matakin tare da yanayin annealed, ya rasa ikon yanke ƙarfe gaba ɗaya, wanda ke iyakance kayan aikin yanke ƙarfe na kayan aikin carbon. Kuma ƙarfe mai sauri saboda kyakkyawan tauri mai ja, don rama ƙarancin ƙarancin ƙarfe na kayan aikin carbon.
Ana amfani da ƙarfe mai saurin gudu musamman don ƙera kayan aikin yanke ƙarfe masu sirara da juriya ga tasiri, amma kuma don ƙera bearings masu zafin jiki da kuma fitar da mashinan fitar da sanyi, kamar kayan aikin juyawa, injinan haƙa rami, murhu, ruwan wukake na injin da kuma mashinan da ake buƙata.
Ku zo ku koyi game da ƙarfe na tungsten
Karfe mai suna Tungsten (carbide) yana da jerin kyawawan halaye kamar tauri mai yawa, juriyar lalacewa, ƙarfi da tauri mafi kyau, juriyar zafi, juriyar tsatsa, da sauransu. Musamman ma ƙarfin tauri da juriyar lalacewa ba sa canzawa ko da a zafin jiki na 500℃, kuma har yanzu yana da tauri mai yawa a 1000℃.
Karfe mai suna Tungsten, wanda manyan abubuwan da ke cikinsa su ne tungsten carbide da cobalt, ya kai kashi 99% na dukkan abubuwan da ke cikinsa da kuma kashi 1% na sauran karafa, don haka ana kiransa da karfe mai suna tungsten, wanda aka fi sani da simintin carbide, kuma ana ɗaukarsa a matsayin haƙoran masana'antar zamani.
Karfe na Tungsten wani abu ne mai haɗakar sintered wanda ya ƙunshi aƙalla haɗin carbide na ƙarfe ɗaya. Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, da tantalum carbide sune abubuwan da aka fi amfani da su a cikin ƙarfe na tungsten. Girman hatsi na ɓangaren carbide (ko mataki) yawanci yana tsakanin microns 0.2-10, kuma ana haɗa ƙwayoyin carbide tare ta amfani da maƙallin ƙarfe. Karafan da ke haɗa gabaɗaya ƙarfe ne na rukuni na ƙarfe, galibi cobalt da nickel. Don haka akwai ƙarfe na tungsten-cobalt, ƙarfe na tungsten-nickel da ƙarfe na tungsten-titanium-cobalt.
Yin amfani da tungsten sinter shine a matse foda a cikin billet, sannan a cikin tanda mai yin sintering don dumama shi zuwa wani zafin jiki (zafin sintering) sannan a ajiye shi na wani lokaci (lokacin riƙewa), sannan a sanyaya shi don samun kayan ƙarfe na tungsten tare da kaddarorin da ake buƙata.
①Tungsten da cobalt carbide mai siminti
Babban sinadarin shine tungsten carbide (WC) da binder cobalt (Co). Matsayin ya ƙunshi "YG" ("mai tauri, cobalt" a cikin Hanyu Pinyin) da kuma kashi na matsakaicin abun ciki na cobalt. Misali, YG8, wanda ke nufin matsakaicin WCo = 8% kuma sauran shine carbide mai siminti na tungsten carbide.
②Tungsten, titanium da cobalt carbide mai siminti
Manyan abubuwan da aka haɗa sune tungsten carbide, titanium carbide (TiC) da cobalt. An haɗa darajar "YT" ("mai tauri, titanium" a cikin Hanyu Pinyin) da matsakaicin abun ciki na titanium carbide. Misali, YT15, yana nufin matsakaicin TiC=15%, sauran shine tungsten carbide da kuma abun ciki na cobalt na tungsten titanium cobalt carbide.
③Tungsten-titanium-tantalum (niobium) carbide
Manyan abubuwan da aka haɗa su ne tungsten carbide, titanium carbide, tantalum carbide (ko niobium carbide) da cobalt. Wannan nau'in carbide ana kuma kiransa da carbide na gama gari ko carbide na duniya baki ɗaya. Matsayin ya ƙunshi "YW" ("mai tauri" da "miliyan" a cikin Hanyu Pinyin) tare da lamba mai jere, kamar YW1.
Karfe mai suna Tungsten yana da jerin kyawawan halaye kamar ƙarfin tauri, juriyar sawa, ƙarfi da tauri mafi kyau, juriyar zafi, juriyar tsatsa, da sauransu. Musamman ma ƙarfin tauri da juriyar sawa ba sa canzawa ko da a zafin jiki na 500℃, kuma har yanzu yana da ƙarfin tauri mai yawa a 1000℃. Ana amfani da simintin carbide a matsayin kayan aiki, kamar kayan aikin juyawa, kayan aikin niƙa, injinan haƙa, kayan aiki masu ban sha'awa, da sauransu. Saurin yanke sabon carbide ɗin ya yi daidai da ɗaruruwan sau na ƙarfen carbon.
Lokacin Saƙo: Fabrairu-21-2023
