Ku zo ku fahimci karfe mai saurin gudu
Karfe mai saurin gudu (HSS) wani karfen kayan aiki ne mai tsayin daka, juriya mai tsayi da juriya mai zafi, wanda kuma aka sani da karfen iska ko karfen gaba, wanda ke nufin ana iya taurare shi ko da an sanyaya shi a cikin iska yayin kashewa, kuma yana da kaifi sosai. Ana kuma kiransa farin karfe.
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Ƙarfe mai saurin gudu wani ƙarfe ne mai haɗaɗɗiya, yana ɗauke da abubuwa masu ƙirƙirar carbide kamar tungsten, molybdenum, chromium, vanadium, da cobalt. Jimlar adadin abubuwan haɗakarwa shine kusan 10-25%. Har yanzu yana iya kula da tsayin daka a ƙarƙashin yanayin zafi mai zafi da aka haifar ta hanyar yankewa mai sauri (kimanin 500 ℃), kuma HRC na iya zama sama da 60. Wannan shine mafi mahimmancin halayen ƙarfe mai sauri - ja taurin. Bayan quenching da ƙananan zafin jiki, carbon Tool karfe yana da babban tauri a dakin da zafin jiki, amma lokacin da zafin jiki ya wuce 200 ° C, taurin ya ragu sosai, kuma taurin ya ragu zuwa wani matakin kama da na annealed jihar a. 500°C. , Gaba ɗaya ya rasa ikon yanke ƙarfe, wanda ke iyakance amfani da kayan aikin carbon don yankan kayan aiki. Ƙarfe mai sauri yana yin ƙarancin ƙarancin ƙarancin ƙarfe na kayan aikin carbon saboda kyakkyawan taurinsa.
An fi amfani da ƙarfe mai sauri don kera ƙwanƙwasa ƙwanƙwasa bakin ciki da kayan aikin yankan ƙarfe masu tasiri, da zafin zafin jiki da ƙarancin sanyi ya mutu, kamar kayan aikin jujjuyawa, raƙuman ruwa, hobs, injin gani ruwan wukake, da buƙatun ƙira.
▌ Bari mu koyi game da tungsten karfe
Tungsten karfe (tungsten carbide) yana da jerin kyawawan kaddarorin irin su babban taurin, sa juriya, ƙarfi mai kyau da tauri, juriya na zafi da juriya na lalata, musamman ma girman taurin sa da juriya, har ma a zazzabi na 500 ° C. Ya rage. m ba canzawa, kuma har yanzu yana da babban taurin a 1000 ° C.
Karfe na Tungsten, manyan abubuwan da ake amfani da su shine tungsten carbide da cobalt, wanda ke da kashi 99% na dukkan kayan aikin, kuma kashi 1% na sauran karafa ne, don haka ake kiransa karfen tungsten, wanda aka fi sani da siminti carbide, kuma ana daukarsa a matsayin hakori na zamani. masana'antu.
Tungsten karfen sintered abu ne mai hade da akalla karfe daya na carbide. Tungsten carbide, cobalt carbide, niobium carbide, titanium carbide, da tantalum carbide sune abubuwan gama gari na ƙarfe tungsten. Girman hatsi na bangaren carbide (ko lokaci) yawanci yana tsakanin 0.2-10 microns, kuma ana gudanar da hatsin carbide tare ta amfani da abin ɗaure ƙarfe. Ƙarfe-ƙarfe gabaɗaya ƙarfe rukuni ne na ƙarfe, waɗanda aka saba amfani da su sune cobalt da nickel. Saboda haka, akwai tungsten-cobalt gami, tungsten-nickel gami da tungsten-titanium-cobalt gami.
Ƙarfin tungsten shine a danna foda a cikin billet, sa'an nan kuma sanya shi a cikin tanderun wuta zuwa wani zafin jiki (zazzabi mai zafi), ajiye shi na wani lokaci (lokacin riƙewa), sannan a kwantar da shi don samun. kayan karfe tungsten tare da abubuwan da ake buƙata.
① Tungsten-cobalt cemented carbide
Babban abubuwan da aka gyara sune tungsten carbide (WC) da kuma binder cobalt (Co). Makinsa ya ƙunshi “YG” (baƙaƙen pinyin na Sinanci na “hard, cobalt”) da adadin matsakaicin abun ciki na cobalt. Misali, YG8 yana nufin cewa matsakaicin WCo = 8%, sauran kuma shine tungsten-cobalt simintin carbide na tungsten carbide.
②Tungsten-titanium-cobalt siminti carbide
Babban abubuwan da aka gyara sune tungsten carbide, titanium carbide (TiC) da cobalt. Matsayinsa ya ƙunshi "YT" (baƙaƙen pinyin na Sinanci na "hard, titanium") da matsakaicin abun ciki na titanium carbide. Misali, YT15 yana nufin cewa matsakaicin TiC=15%, sauran kuma shine tungsten carbide da cobalt tushen tungsten-titanium-cobalt siminti carbide.
③Tungsten-titanium-tantalum (niobium) - tushen simintin carbide
Babban abubuwan da aka gyara sune tungsten carbide, titanium carbide, tantalum carbide (ko niobium carbide) da cobalt. Irin wannan nau'in simintin carbide kuma ana kiransa babban siminti carbide ko simintin carbide na duniya. Matsayinsa ya ƙunshi "YW" (baƙaƙen pinyin na Sinanci na "hard" da "wan") da lambar jeri, kamar YW1.
Tungsten karfe yana da jerin kyawawan kaddarorin irin su babban taurin, sa juriya, ƙarfi mai kyau da tauri, juriya mai zafi da juriya na lalata, musamman ma girman taurin sa da juriya, wanda a zahiri ya kasance baya canzawa ko da a zazzabi na 500 ° C. Har yanzu yana da babban taurin a 1000 ° C. Ciminti carbide ana amfani da ko'ina a matsayin abu, kamar juya kayan aikin, milling cutters, drills, m kayan aiki, da dai sauransu The yankan gudun sabon siminti carbide ne daruruwan sau na carbon karfe.
Lokacin aikawa: Agusta-09-2023
