42CrMo zafi birgima karfe sheet /bar

42CrMo4 karfe ne don quenching da tempering, wanda yana da kyakkyawar haɗuwa da ƙarfi da ƙarfi a cikin yanayin da aka kashe da zafi. Bayan an kashe mai, karfen zai kasance taurare har zuwa diamita sanduna ø60 mm. Ƙirƙirar ƙananan girma ba cikakke ba ne. Karfe yana da amfani ga tauraruwar induction. Taurin saman zai wuce min. 53 HRC. 42CrMo4 za a iya isar da M-magani don inganta injina.

Haɗin Sinadari
Karfe daraja	C	Si	Mn	P	S	Cr	Mo	Ku
35CrMo	0.38～0.45%	0.17～0.37%	0.50～0.80%	≤0.035%	≤0.035%	0.90～1.20%	0.15～0.25%	≤0.30%

Kayan aikin injiniya

Ƙarfin Haɓaka σs /MPa (>=)	Ƙarfin ƙarfi σb /MPa (>=)	Tsawaitawa δ5 /% (>>)	Ragewar yanki ψ/% (>=)	Tasiri tsoma makamashi Aku2/J (>=)	Hardness HBS 100 /3000 max
≥930(95)	1080 (110)	≥12	≥45	≥78(8)	Saukewa: 217HB

Domin ƙara yawan rayuwar mutun zuwa fiye da sau 800,000 na mutuwa, ana iya taurare karfen da aka rigaya ya rigaya ta hanyar quenching da ƙananan zafin jiki. A lokacin da quenching, preheat a 500-600 ℃ na 2-4 hours, sa'an nan kuma ajiye shi a 850-880 ℃ na wani lokaci (akalla 2 hours), sa'an nan kuma saka shi a cikin man fetur da sanyi zuwa 50-100 ℃ iska sanyaya, da taurin iya isa 50 bayan quenching -52HRC, domin ya hana fatattaka, 200 ℃ low zazzabi tempering jiyya ya kamata a za'ayi nan da nan. Bayan zafin jiki, ana iya kiyaye taurin sama da 48HRC.

42CrMo Karfe Zafin Jiyya

Annealing

Annealing a 760 ± 10 ℃, tanderun sanyaya zuwa 400 ℃ sa'an nan iska sanyaya.

Daidaitawa

Normalizing a 760 ± 10 ℃, iska sanyaya bayan fita daga tanderun.

Bayanan kula Game da Quenching da Maganin Zazzabi

Dole ne a kula da zafin jiki na mai sanyaya ruwa. Kuma dole ne a tabbatar da cewa babu gurbataccen mai ko wasu datti. In ba haka ba, taurin karfe ba zai isa ba ko daga ma'auni.

Quenching da tempering don billet karfe abu ba tare da aiki, to zai sami rashin Uniform taurin. Don haka sarrafa ƙirƙira ko niƙa ya zama dole kafin Q+T.