440 karfe - bakin karfe. Karfe 440: halaye

Karfe kira wani fili na baƙin ƙarfe , da carbon. Nau'in daga cikin kayan ba m ta hanyar da rabo daga asali aka gyara, da kuma a kan tushen da impurities da Additives ganawarku samfurin daban-daban dũkiyarsu da kuma halaye.

Nau'in na karfe, bisa ga farashin manufofin za a iya raba subgroups, cheap, m da tsada. A duk ya dogara a kan manufar da kayan matsaloli ta samar. Haka kuma, babu wani nagari ko mugu uniquely gami, kamar yadda aiki kayan qunshi wani hadadden na halaye da saduwa wasu yanayi. Musamman, ana iya gani idan muka yi la'akari da, misali, 440 karfe.

karfe aka gyara

Quality karfe kamata a halin lokaci guda sa juriya, tauri, elasticity, ductility, tauri, jimiri da kuma lalata ikon wasa. A yi, kusan dukkan wadannan kaddarorin ne saba wa juna. Daya daga cikin manyan abubuwa na gami, shi ne alhakin taurin da kuma rigidity, shi ne carbon. Domin mahadi tare da babban abun ciki na shi sun hada da waɗanda a cikin abin da taro na wani ba sinadari ne mafi girma daga 0.5%. Sa juriya dukiya da kuma low propensity ga lalata anka Chrome karfe. Idan matakin ne mafi girma daga 13%, wannan bakin karfe kayayyakin.

Hatsi size, ƙarfi, stiffness bada gami da manganese. Ana amfani da a cikin mataki na ƙirƙira da kuma mirgina. Wannan ake kira kashe karfe.

Don da samfurin daga wannan abu ba gaggautsa da kuma m, kuma duk da haka ne resistant don zafi, a fili yake kara molybdenum. A wannan yanayin, gami da aka kira iska-huce ba.

Ya taimaka rage hadarin lalata da kuma bada taurin nickel. Property sansanin soja na samar da kayan silicon. Tungsten da vanadium gami bada ƙarfi ne, kuma karko.

Features karfe sa 440

440 dangantaka da bakin karfe kayan. Ana amfani da yafi ga yi na wukake, gini Tsarin. The bayãnin hukuncin alama ce ta wannan gami shi ne resistant zuwa lalata da kuma high ƙarfi. Har ila yau a cikin wannan jerin ne da amfani da juriya ga muhalli dalilai, ruwa, abinci, da rauni acid da kuma alkalis.

Karfe sa 440 hada subspecies 440A, 440B, 440C, kuma 440A jerin - sauran softer kuma 440C - wuya. Duk da haka, da drawback ne fragility na 440C kuma mun gwada low jure tsatsa dangane da 440A, kuma 440B. Sai dai itace cewa lalata iya faruwa a kan shafe tsawon lamba tare da danshi ko m kafofin watsa labarai. Ko da yake ƙarin Properties, tsatsa m, ya ba da wannan gami saboda da m goge surface.

An ba da shawarar yin amfani da 440 karfe a zazzabi fi da zafi a lokacin tafiya, tun a cikin wannan harka inji Properties na gami da aka rasa.

A sunadarai abun da ke ciki na karfe 440

Karfe 440, da halaye na waxanda suke tsaye dogara a kan sinadaran abun da ke ciki, bisa ga jerin, yana dauke da abubuwa dauke a cikin tebur a kasa.

Kamar yadda tebur nuna, mafi ƙasƙanci carbon abun ciki na 440A jerin, mafi girma - 440C, cewa shi ne, sabuwar alama karfi fiye da duk, da kuma na farko shi ne mafi resistant zuwa lalata. Ko da yake duk jerin daga cikin iri fairly high quality, kuma mai kyau kaya canja wuri.

The jiki Properties da kuma thermal jiyya na bakin karfe 440

Karfe 440 jiki halaye sigogi ga jerin A, B da C yana da wadannan:

• material yawa - 7650 kg / cu. m.
• modulus - 200 GPA.
• thermal watsin - 242 W / m kbp.;
• takamaiman zafi damar - 460 J / kg.kb.;
• lantarki resistivity - 600.

Taurin karfe 440 dabam a cikin 56-58 raka'a.

A talakawan thermal fadada coefficient, wanda aka auna a mm / m / digiri centigrade a 440A jerin - 10.1. 440B - 10.3. 440C - 11,7.

Zafi magani na wannan abu ya wuce ta da wadannan matakai:

• annealing.
• quenching.
• vacation.

Annealing faruwa a zazzabi na + 850-900 digiri Celsius, bi da akai rage zuwa _600. Sanyaya auku da iska hanya. Sa'an nan - hanya damped annealing a 735-785 darajõji, kuma sanyaya a cikin gagarumar wuta.

Tempering ne da za'ayi a + 1010-1065 digiri Celsius. Quenching - ta amfani da dumi man ko iska.

Vacation wuce a + 150-370 digiri, haka da cewa abu ne da aka ba da zama dole taurin. Daga cikin irin abu kamar karfe 440, da halaye na inji mataki a cikin mafi kyau sa 440C. Wannan gami shi ne mafi m da kuma abin dogara. Yana ma'anar da kayayyakin ingancin misali.

Aikace-aikace Karfe 440

440 bakin karfe mafi yawa amfani ga yi na wukake. Hayan ba gami domin gina kayayyakin da ake welded ko wasu mahadi.

Zanen gado na ƙãre kayayyakin ake samar da kauri daga 4 zuwa 50 mm. 440 karfe ba ya bukatar ƙarin dumama da kuma zafi magani a lokacin ta waldi. M ne kuma abin dogara gami da samar da bearings, guda na bututu kayan aiki.

440A daga cikin iri samar mafi m wukake, ciki har da karkashin ruwa, farauta. The ruwan wukake da 440C jerin suna da kyau kwarai sabon dũkiyarsu da kuma mai kyau daukan hotuna na wasa, don haka wannan karfe an yi amfani da samar da wadataccen sabon kayan aikin.

Kana bukatar ka sani a lokacin da sayen wuka suna "440" da ake amfani da maras tsada gami - 440A. A cikin hali na fi tsada mahadi 440B da 440C masana'antun ko da yaushe kula da shi.

madadin alama

Akwai da dama daga madadin brands, wanda za a iya maye gurbinsu da wannan gami. Alal misali, a jerin 440A / B mallaka ƙarin fasali da inganta lalata juriya. Karfe 440F yana da mafi girma Sannan ina a irin wannan karfin. Baya ga nasu halaye ga taurin sa 420. 416 jerin yana da babban Sannan ina amma ƙananan AMINCI.

Idan ka yi wuƙaƙe daga 440A iri da kuma ta analogs, wadannan kayayyakin su dace da amfanin yau da kullum. Ko da yake, yana da daraja la'akari da ingancin quenching. To tabbatar da wannan tsari m Kor. Kamfanin "Randall" yafi samar karfe ruwan wukake 440B.