Spot garanti tallace-tallace na 42CrMo gami karfe bututu masana'antun
Manufar 42CrMo bututu maras nauyi: ƙarfe na musamman don gada shine "42CrMo", ƙarfe na musamman don girdar mota shine "42CrMo", kuma ƙarfe na musamman don jirgin ruwa shine "42CrMo". Irin wannan ƙarfe yana inganta kayan aikin ƙarfe ta hanyar daidaita abun ciki na carbon (c). Saboda haka, bisa ga abun ciki na carbon, irin wannan karfe za a iya raba zuwa: low carbon karfe - da carbon abun ciki ne gaba daya kasa da 0.25%, kamar 10 da 20 karfe; Medium carbon karfe - da carbon abun ciki ne kullum tsakanin 0.25 ~ 0.60%, kamar 35 da kuma 45 karfe; Babban carbon karfe - abun ciki na carbon gabaɗaya ya fi 0.60%. Ba a yawan amfani da irin wannan ƙarfe wajen kera bututun ƙarfe.
42CrMo wani nau'in karfe ne. Karfe da ake kira karfe. Ana kiran hanyar Q345B. Irin wannan kayan sune Q345A, Q345C da Q345E. Alamar ingancin darajar a, B, C, de bi da bi tana nuna cewa ba a buƙatar gwajin tasiri. Yawan zafin gwajin tasiri shine + 20 ° 0 ° zuwa 20 ° 40 ° ABCD yana nuna ingancin darajar Q235. An raba darajar darajar zuwa maki hudu A, B, C da D. daga a zuwa D yana nuna cewa ingancin yana daga ƙasa zuwa babba.
A - samar da s, P, C, Mn, Si sinadaran abun da ke ciki da kuma Fu, FY δ 5（ δ 10), 1800 sanyi lankwasawa gwajin za a iya bayar bisa ga mai saye ta bukatun, amma babu wani tasiri makamashi tsari, da kuma carbon abun ciki. kuma ba a ɗaukar abun ciki na manganese azaman yanayin bayarwa.
B - samar da s, P, C, Mn, Si sinadaran abun da ke ciki da kuma Fu, FY δ 5（ δ 10), sanyi lankwasa 180 'gwaji. Hakanan ana bayar da tasirin tasirin AK ≥ 27j a + 200C
C - ban da abubuwan da ake buƙata na aji B, ana ba da tasirin tasirin AK ≥ 27j a 00C.
D - ban da buƙatun matakin B, ana ba da tasirin tasirin makamashi AK ≥ 27j a - 200C. E - ban da buƙatun matakin B, ana bayar da tasirin tasirin AK ≥ 27j a - 400C. Bayanin aiki mai zafi
Zazzabi mai zafi shine 1150 ~ 1200 ° C, zafin farawa shine 1130 ~ 1180 ° C, kuma ƙarshen zafin jiki shine> 850 ° C, φ> Slow sanyaya a 50mm.
Matsakaicin zafin jiki na yau da kullun shine 850 ~ 900 ° C, kuma ana fitar da tanderun don sanyaya iska.
Ƙayyadaddun yanayin zafi mai girma
The tempering zafin jiki ne 680 ~ 700 ° C, da kuma tanderun da aka sallama ga iska sanyaya.
Preheating zafin jiki 680 ~ 700 ° C, quenching zafin jiki 840 ~ 880 ° C, mai sanyaya, tempering zazzabi 580 ° C, ruwa sanyaya ko man sanyaya, taurin ≤ 217hbw.
Ƙididdiga don ƙarfafawa da ƙarfafa jiyya ta hanyar rage zafin jiki
Quenching zafin jiki 900 ° C, zafin jiki na 560 ° C, taurin (37 ± 1) HRC
Ƙayyadewa don quenching induction da tempering
Quenching zafin jiki 900 ° C, tempering zazzabi 150 ~ 180 ° C, taurin 54 ~ 60HRC.
