Haɓaka da samar da kayan da ba na maganadisu ba su ne mahimman abubuwan da ke nuna sabbin kayan gami mai wuya.Hard alloy ana yin shi ta hanyar sintering da refractory karfe carbides na IV A, VA, da VI A kungiyoyin a lokaci-lokaci tebur na abubuwa (kamar tungsten carbide WC), da kuma miƙa mulki karfe kungiyar (cobalt Co, nickel Ni, iron Fe) azaman lokacin haɗin gwiwa ta hanyar masana'antar ƙarfe ta foda.Carbide tungsten da ke sama ba maganadisu ba ne, yayin da Fe, Co, da Ni duk magnetic ne.Yin amfani da Ni a matsayin mai ɗaure abu ne mai mahimmanci don samar da allunan da ba na maganadisu ba.
Akwai hanyoyi masu zuwa don samun jerin WC Ni wadanda ba na maganadisu ba:1.Tsananin sarrafa abun cikin carbon
Kamar WC Co gami, abun ciki na carbon shine babban abin da ke shafar ingantaccen ƙarfin maganin W a cikin lokacin haɗin gwiwa na WC Ni gami.Wato, ƙananan abubuwan da ke cikin carbon na lokacin fili na carbon a cikin gami, mafi girman ƙarfin bayani mai ƙarfi na W a cikin lokacin haɗin gwiwa na Ni, tare da bambancin kewayon kusan 10-31%.Lokacin da m bayani na W a cikin Ni bonded lokaci ya wuce 17%, da gami ya zama demagnetized.Mahimmancin wannan hanyar shine samun abubuwan da ba na maganadisu ba ta hanyar rage abun ciki na carbon da haɓaka ingantaccen bayani na W a lokacin haɗin gwiwa.A aikace, WC foda tare da abun ciki na carbon da ke ƙasa da abubuwan da ake amfani da su na carbon da aka saba amfani da su, ko kuma ana ƙara W foda a cikin cakuda don cimma burin samar da ƙananan ƙwayoyin carbon.Koyaya, yana da matukar wahala a samar da allunan da ba na maganadisu ba kawai ta hanyar sarrafa abun cikin carbon.
2. Ƙara chromium Cr, molybdenum Mo, tantalum Ta
Babban carbon WC-10% Ni (wt% ta nauyi) gami yana nuna feromagnetism a zafin jiki.Idan sama da 0.5% Cr, Mo, da 1% Ta an ƙara su cikin nau'in ƙarfe, babban gami da carbon zai iya canzawa daga feromagnetism zuwa rashin magnetism.Ta hanyar ƙara Cr, abubuwan magnetic na gami sun kasance masu zaman kansu daga abun ciki na carbon, kuma Cr shine sakamakon babban adadin ingantaccen bayani a cikin tsarin haɗin gwiwa na gami, kamar W. Alloy tare da Mo da Ta na iya canzawa kawai zuwa wanda ba Magnetic alloy a wani carbon abun ciki.Saboda ƙarancin ingantaccen bayani na Mo da Ta a cikin lokacin haɗin gwiwa, yawancinsu kawai suna ɗaukar carbon a cikin WC don samar da daidaitattun carbides ko ingantaccen mafita.A sakamakon haka, abun da ke ciki na gami yana motsawa zuwa gefen ƙananan carbon, wanda ya haifar da karuwa a cikin ingantaccen bayani na W a lokacin haɗin gwiwa.Hanyar ƙara Mo da Ta ita ce samun abin da ba na maganadisu ba ta hanyar rage abun cikin carbon.Kodayake ba shi da sauƙin sarrafawa kamar ƙara Cr, yana da sauƙin sarrafa abun cikin carbon fiye da tsantsar WC-10% Ni gami.An faɗaɗa kewayon abun ciki na carbon daga 5.8-5.95% zuwa 5.8-6.05%.
Imel:oiltools14@welongpost.com
Tuntuɓi: Grace Ma
Lokacin aikawa: Oktoba-09-2023
