An fi amfani da ƙarfe mai ɗaukar nauyi don kera abubuwa masu jujjuyawa da zoben birgima.Saboda ɗaukar nauyi ya kamata ya kasance yana da tsawon rayuwa, daidaitaccen ƙima, ƙarancin zafi mai ƙarfi, babban saurin gudu, tsayin daka, ƙaramin ƙara, juriya mai ƙarfi, da sauransu, ƙarfe mai ɗaukar nauyi ya kamata ya kasance: babban taurin, taurin uniform, babban iyaka na roba, babban gajiyar lamba. Ƙarfi, mahimmancin tauri, wasu taurin, juriya na lalata a cikin man shafawa a cikin yanayi.Don saduwa da buƙatun aikin da ke sama, abubuwan da ake buƙata don daidaituwar nau'ikan sinadarai na ƙarfe mai ɗaukar nauyi, abun ciki da nau'in abubuwan da ba na ƙarfe ba, girman da rarraba carbides, da decarburization suna da tsauri.Baƙin ƙarfe gabaɗaya yana haɓaka zuwa babban inganci, babban aiki da nau'ikan iri.An rarraba ƙarfe mai ɗaukar nauyi zuwa babban ƙarfe na chromium mai ɗaukar ƙarfe, ƙarfe mai ɗaukar ƙarfe, ƙarfe mai ɗaukar zafi mai ƙarfi, ƙarfe mai ɗaukar nauyi da kayan haɓaka na musamman bisa ga halaye da yanayin aikace-aikacen.Don saduwa da buƙatun zafin jiki mai girma, babban sauri, babban nauyi, juriya na lalata da juriya na radiation, ana buƙatar haɓaka jerin sabbin ƙarfe masu ɗaukar nauyi tare da kaddarorin musamman.Domin rage iskar oxygen na karfen da ke dauke da karfe, an samar da fasahohin narka karafa irinsu vacuum smelting, electroslag remelting, electron biam remelting.An samar da narkewar ƙarfe mai yawa daga murhun wutar lantarki mai narkewa zuwa nau'ikan tanda na farko na farko da tace tanderun waje.A halin yanzu, ana amfani da ƙarfe mai ɗaukar nauyi fiye da ton 60 + LF / VD ko RH + ci gaba da simintin gyare-gyare + ci gaba da birgima don samar da ƙarfe mai ɗaukar nauyi don cimma manufar inganci, inganci mai ƙarfi da ƙarancin kuzari.Dangane da tsarin kula da zafi, an ɓullo da murhun ƙasan mota da tanderun murhu a cikin tanderun da ke ci gaba da sarrafa yanayin zafi don maganin zafi.A halin yanzu, nau'in wutar lantarki mai ci gaba da zafi yana da matsakaicin tsayi na 150m, kuma tsarin nodular na ƙarfe mai ɗaukar nauyi yana da kwanciyar hankali da daidaituwa, Layer na decarburization yana da ƙananan, kuma amfani da makamashi yana da ƙasa.

Bearing karfe ya kamata yana da wadannan kaddarorin:

1. Ƙarfin gajiya mai girma.
2. Babban juriya na abrasion.
3. Babban iyaka na roba da ƙarfin yawan amfanin ƙasa.
4. High da uniform taurin.
5, wani tasiri mai ƙarfi.
6. Kyakkyawan kwanciyar hankali.
7, kyakkyawan aikin hana lalata.
8. Kyakkyawan tsarin aiki.

Ƙarfe na gama gari:

Zaɓin kayan aikin ƙarfe kuma yana buƙatar takamaiman sayan.Don ɗaukar kayan da ke aiki a ƙarƙashin yanayi na musamman, bisa ga ƙayyadaddun buƙatun su, ya kamata su kasance suna da kaddarorin na musamman waɗanda suka dace da yanayinsu, kamar: juriya mai ƙarfi, ƙarancin zafin jiki, juriya na lalata, Anti-radiation, anti-magnetic da sauran halaye.

Cikakkun ƙarfe mai ƙarfi mai ƙarfi shine babban ƙarfe na chromium na carbon, kamar GCr15, wanda ke da abun ciki na carbon kusan 1% da abun ciki na chromium kusan 1.5%.Domin inganta taurin, sa juriya da taurin, wasu silicon, manganese, molybdenum, da sauransu, irin su GCr15SiMn, ana ƙara su daidai.Irin wannan nau'in karfe yana da mafi girman fitarwa, wanda ya kai fiye da kashi 95% na duk kayan da aka fitar.

Carburizing bearing karfe shine chromium, nickel, molybdenum gami da tsarin karfe tare da abun ciki na carbon na 0.08 zuwa 0.23%.Fuskar sashin da ke ɗauke da carbonitrided ne don inganta taurinsa da sa juriya.Ana amfani da wannan ƙarfe don kera Manyan bearings waɗanda ke ɗaukar nauyin tasiri mai ƙarfi, kamar manyan ƙwanƙolin niƙa, ƙwanƙolin mota, ɗaukar injin ma'adinai, da abubuwan hawan jirgin ƙasa.

Bakin ɗaukar karafa sun haɗa da manyan ƙarfe na ƙarfe na chromium mai ɗaukar nauyi, irin su 9Cr18, 9Cr18MoV, da matsakaicin ƙarfe na chromium mara ƙarfi, irin su 4Cr13, da sauransu, waɗanda ake amfani da su don yin bakin karfe da lalata.

Ana amfani da ƙarfe mai ɗaukar nauyi mai zafi a babban zafin jiki (300 ~ 500 ℃).Ana buƙatar cewa karfe yana da ɗan taurin ja kuma ya sa juriya a yanayin zafin amfani.Yawancinsu suna amfani da kayan aikin ƙarfe mai sauri, kamar W18Cr4V, W9Cr4V, W6Mo5Cr4V2, Cr14Mo4 da Cr4Mo4V.