Maganin Zafin Carbon Karfe

Hanyoyin maganin zafi da aka saba amfani da su don simintin ƙarfe na carbon sune: annealing, normalizing ko normalizing + tempering. Ana nuna tasirin waɗannan hanyoyin magance zafi guda uku akan kayan aikin simintin ƙarfe na simintin ƙarfe a cikin hoton da ke ƙasa.

Zazzabi da Taurin Karfe na Carbon Karfe
Matsayin Karfe Karfe	Abubuwan Carbon / %	Yanayin zafi / ℃	Rike Lokaci		Hanyar sanyaya	Hardness / HBW
			Kaurin bango / mm	Lokaci / h
Saukewa: ZG200-400	0.10 - 0.20	910-880	30	1	Cooling zuwa 620 ℃ a cikin tanda sannan sanyaya a cikin iska	115-143
Saukewa: ZG230-450	0.20 - 0.30	900-870				133-156
Saukewa: ZG270-500	0.30 - 0.40	890-860				143-187
Saukewa: ZG310-570	0.40 - 0.50	870-840	30 - 100	ƙara 1 hour / 30 mm		156-127
Saukewa: ZG340-640	0.50 - 0.60	860-830				187-230

 

Abubuwan injuna na simintin gyaran ƙarfe na yau da kullun sun ɗan yi girma fiye da na simintin ƙarfe. Kamar yadda mataki na rashin sanyi a lokacin canjin tsarin yana da girma sosai, taurin zai zama mafi girma, kuma aikin yankewa ya fi kyau.

Daidaitawa da Taurin Simintin Karfe na Carbon Karfe
Matsayin Karfe Karfe	Abun Carbon (%)	Daidaita Zazzabi / ℃	Haushi		Hardness / HBW
			Zazzabi / ℃	Hanyar sanyaya
Saukewa: ZG200-400	0.10 - 0.20	930-890	540-610	a cikin tanderu ko iska	126-149
Saukewa: ZG230-450	0.20 - 0.30	930-890	540-610	a cikin tanderu ko iska	139-169
Saukewa: ZG270-500	0.30 - 0.40	890-860	550-620	a cikin tanderu ko iska	149-187
Saukewa: ZG310-570	0.40 - 0.50	890-850	550-650	a cikin tanderu ko iska	163-217
Saukewa: ZG340-640	0.50 - 0.60	870-830	550-650	a cikin tanderu ko iska	187-228

 

Don simintin gyare-gyaren ƙarfe na carbon tare da babban abun ciki na carbon da hadaddun siffofi, don kawar da saura danniya da inganta tauri, ana iya aiwatar da maganin zafin jiki bayan daidaitawa. The tempering zafin jiki ne kullum 550 ℃-650 ℃, sa'an nan sanyi a cikin iska.

Lokacin da abun cikin carbon ya fi 0.35%, sassan ƙarfe na simintin carbon kuma za'a iya kashe su kuma a kashe su (wanda aka kashe + zafin jiki mai zafi). Kananan simintin gyare-gyare na carbon karfe za a iya kashe su kai tsaye kuma a huce su a cikin yanayin simintin; Ya kamata a kashe simintin gyare-gyaren ƙarfe babba ko hadaddun simintin carbon da kuma fushi bayan daidaitawa.

 

Ƙunƙarar Da Zazzabi da Zazzabi da Taurin Simintin Karfe na Carbon Karfe
Abun Carbon %	Zazzabi / ℃	Zazzabi / ℃	Taurin Bayan Zazzaɓi / HBW
0.35 - 0.45 (Ƙananan Batch)	850 - 830 (Cooling cikin Ruwa)	300-400	364-444
		400-450	321-415
		510-550	241-286
		540-580	228-269
		580-640	192-228
0.45 - 0.55 (Ƙananan Batch)	830 - 810 (Sannan a Ruwa ko Mai)	550-630	220-240
		450	≈ 269
		550	≈ 248
		650	≈ 228
0.30 - 0.40 (Mass Batch)	840 - 880 (Canjin cikin Ruwa ko Mai)	520-550	229-269
		530-560	217-255
		540-570	207-241
		550-580	187-229
0.40 - 0.50 (Mai Girma)	820 - 840 (Sannan a Ruwa ko Mai)	530-560	229-269
		550-580	217-255
		560-590	207-241
		570-600	187-229