Mai ɗaukar bututu wani nau'i nebututu mara nauyita zafi-birgima ko sanyi-birgima (sanyi zana), wanda aka yi amfani da shi don kera zoben ɗaure na yau da kullun.Matsakaicin diamita na bututu yawanci shine 25-180 mm kuma tare da kauri na bango na 3.5-20 mm.Ana amfani da ƙarfe mai ɗaukar nauyi don yin ball, abin nadi da zoben ƙarfe na ƙarfe.Bearings suna aiki ƙarƙashin babban matsi da gogayya, yana buƙatar ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙarfe da juriya, da babban iyaka na roba.Bearing karfe sinadaran abun da ke ciki uniformity, wadanda ba karfe hada abun ciki da kuma rarraba, rarraba carbides da sauran bukatun ne sosai stringent bukatun na duk karfe samar a daya daga cikin mafi wuya karfe maki.

Ƙarfe mai ɗaukar nauyi yana da buƙatun ingancin narkewa, a halin yanzu, kuma yana buƙatar kulawa mai ƙarfi na sulfur, phosphorus, abun ciki na hydrogen, da abubuwan da ba na ƙarfe ba da carbides na lamba, girma da rarrabawa, abubuwan da ba na ƙarfe ba da carbides azaman lambar, girman da girman. Rayuwar sabis ɗin rarrabawar ƙarfe mai ɗaukar nauyi babban tasiri, sau da yawa rashin gazawa yana cikin manyan abubuwan haɗin carbide ko ƙananan fashewar da aka haifar a kusa da tsawo zuwa.Abubuwan da aka haɗa da abun ciki na oxygen a cikin ƙarfe yana da alaƙa da alaƙa da mafi girman abun ciki na oxygen, yawan adadin abubuwan da aka haɗa, da ɗan gajeren rai.Kuma carbide inclusions ya fi girma barbashi size, mafi uniform rarraba, da ya fi guntu da sabis rayuwa, kuma su size , rarraba da kuma amfani da smelting tsari da smelting quality ne a hankali alaka da, yanzu qazanta karfe samar da kuma babban tsari shi ne ci gaba. simintin gyare-gyaren EAF + ESR, kazalika da ƙaramin adadin injin induction injin arc sau biyu ko + mai saurin amfani da injin da sauran fasaha don haɓaka ingancin ƙarfe mai ɗaukar nauyi.

Tun da bearing ya kamata a yi tsawon rai, high madaidaici, low zafi, high gudun, high rigidity, low amo, high lalacewa juriya da sauran halaye, don haka bukatar da hali bututu ya kamata a yi: high taurin, uniform taurin, high na roba iyaka, high. tuntuɓar ƙarfin gajiya, dole ne tauri, taurin dole ya kasance cikin juriya na lalata yanayi na mai mai.Don cimma waɗannan buƙatun aikin, abun da ke tattare da sinadaran karfe bearings homogeneity, wanda ba na ƙarfe hada abun ciki da nau'in, girman da rarraba carbides, decarburization bukatar.Overall hali karfe zuwa high quality-, high yi da Multi-iri shugabanci.Ƙarfe mai ɗaukar nauyi bisa ga halaye da yanayin aikace-aikacen sun kasu kashi: babban carbon chromium mai ɗaukar ƙarfe, ƙarfe mai ɗaukar ƙarfe, ƙarfe mai ɗaukar zafi mai zafi, bakin karfe da kayan ɗamara na musamman.Don saduwa da yanayin zafi mai girma, babban sauri, babban nauyi, lalata, buƙatun anti-radiation, buƙatar haɓaka jerin ayyuka na musamman na sabon ƙarfe mai ɗaukar nauyi.Domin rage iskar oxygen na karfe mai ɗaukar nauyi, haɓakar vacuum smelting, electroslag remelting, electron biam remelting bearing karfe smelting fasahar.Yawancin nau'ikan narkar da ƙarfe mai narkewa ta hanyar narkewar baka, don haɓaka zuwa kowane nau'in tanderun tace farkon Kanada.