42crmo sumul karfe bututu
Takaitaccen Bayani:
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Gabatarwar samfur:
Manufar 42crmo sumul karfe bututu: musamman karfe ga gada ne "42crmo", da musamman karfe ga mota girder ne "42CRmo", da musamman karfe jirgin ruwa jirgin ruwa ne "42Crmo".Irin wannan ƙarfe shine dogara ga daidaitawar abun ciki na carbon (C) don inganta kayan aikin injiniya na karfe, sabili da haka, bisa ga abun ciki na carbon na babba da ƙananan, irin wannan karfe za a iya raba zuwa: ƙananan ƙarfe na carbon - carbon. abun ciki gabaɗaya ƙasa da 0.25%, kamar 10, 20 karfe, da sauransu;Matsakaici carbon karfe - carbon abun ciki ne kullum tsakanin 0.25 ~ 0.60%, kamar 35, 45 karfe, da dai sauransu High carbon karfe - carbon abun ciki kullum fi 0.60%.Ba a saba amfani da irin wannan ƙarfe don yin bututun ƙarfe ba.
Ƙayyadaddun tsari:
Bayanin aiki mai zafi
Zazzabi mai zafi 1150 ~ 1200 ° C, farawa zafin jiki 1130 ~ 1180 ° C, zazzabi na ƙarshe> 850 ° C, φ> 50mm, jinkirin sanyaya.
Daidaita ƙayyadaddun ƙayyadaddun bayanai
Normalizing zafin jiki 850 ~ 900 ° C, daga cikin tanda iska sanyi.
Ƙayyadaddun yanayin zafi mai girma
Zazzabi zafin jiki 680 ~ 700 ° C, daga cikin tanda iska sanyi.
Ƙayyadewa don quenching da tempering
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.
Ƙayyadaddun ƙayyadaddun ƙaƙƙarfan ƙarfi da ƙarfi a ƙarƙashin - kashe zafin jiki
Quenching zafin jiki 900°C, zafin jiki 560°C, taurin (37±1) HRC
Ƙayyadaddun ƙayyadaddun ƙaddamarwa don hardening induction da tempering
Quenching zafin jiki 900 ° C, tempering zafin jiki 150 ~ 180 ° C, taurin 54 ~ 60HRC.
