UNyango loBushushu lweCarbon Steel Castings

Iindlela zokunyanga ubushushu zihlala zisetyenziselwa ukuphoswa kwentsimbi yekhabhoni zezi: annealing, normalizing okanye normalizing + tempering. Impembelelo yezi ndlela zintathu zonyango lokushisa kwiipropati zemishini ye-carbon steel cast iboniswe kumzobo ongezantsi.

Iqondo lobushushu eliAnealing kunye noBulukhuni beCarbon Steel Castings
IBanga leCarbon Steel	Umxholo weCarbon / %	Iqondo lobushushu elihonjisiweyo / ℃	Ukubamba ixesha		Indlela yokupholisa	Ukuqina / HBW
			Ukutyeba kodonga / mm	Ixesha / h
ZG200 - 400	0.10 - 0.20	910 - 880	＜ 30	1	Ukupholisa ukuya kuma-620℃ kwiziko kwaye emva koko kuphole emoyeni	115 - 143
ZG230 - 450	0.20 - 0.30	900 - 870				133 - 156
ZG270 - 500	0.30 - 0.40	890 - 860				143 - 187
ZG310 - 570	0.40 - 0.50	870 - 840	30 - 100	ukwandisa iyure eyi-1 / 30 mm		156 - 127
ZG340 - 640	0.50 - 0.60	860 - 830				187 - 230

 

Iipropathi zoomatshini zentsimbi yentsimbi eqhelekileyo ziphezulu kancinane kunezo zentsimbi ephosiweyo. Njengoko iqondo le-undercooling ngexesha lokuguqulwa kwesakhiwo likhulu kakhulu, ubunzima buya kuba buphezulu, kwaye ukusebenza kwayo kokusika kungcono.

UkuQiniswa kunye noBulukhuni beCarbon Steel Castings
IBanga leCarbon Steel	Umxholo weCarbon (%)	Ubushushu obuqhelekileyo / ℃	Ukufudumeza		Ukuqina / HBW
			Ubushushu / ℃	Indlela yokupholisa
ZG200 - 400	0.10 - 0.20	930 - 890	540 - 610	eziko okanye emoyeni	126 - 149
ZG230 - 450	0.20 - 0.30	930 - 890	540 - 610	eziko okanye emoyeni	139 - 169
ZG270 - 500	0.30 - 0.40	890 - 860	550 - 620	eziko okanye emoyeni	149 - 187
ZG310 - 570	0.40 - 0.50	890 - 850	550 - 650	eziko okanye emoyeni	163 - 217
ZG340 - 640	0.50 - 0.60	870 - 830	550 - 650	eziko okanye emoyeni	187 - 228

 

Kwi-carbon steel castings enomxholo ophezulu wekhabhoni kunye neemilo eziyinkimbinkimbi, ukwenzela ukuphelisa uxinzelelo olushiyekileyo kunye nokuphucula ukuqina, unyango oluvuthayo lunokwenziwa emva kokuqhelekileyo. Ubushushu bobushushu buqhele ukuba yi-550℃-650℃, kwaye emva koko buphole emoyeni.

Xa umxholo wekhabhoni uphezulu kune-0.35%, iindawo zentsimbi zekhabhoni nazo ziyakwazi ukucinywa kwaye zihluthwe (zicinywe + ukushisa okuphezulu). I-carbon steel castings encinci inokucinywa ngokuthe ngqo kwaye ihlanjululwe kwimeko ye-as-cast; ezinkulu okanye ezintsonkothileyo-ezimile carbon steel castings kufuneka zicinywe kwaye inomsindo emva kokuqheleka.

 

Ukucinywa kunye noBubushushu boBubushushu kunye noBulukhuni beCarbon Steel Castings
Umxholo weCarbon %	Ukucima Ubushushu / ℃	Ubushushu bobushushu / ℃	Ukuqina emva kokucaphuka / HBW
0.35 - 0.45 (Iqela elincinci)	850 - 830 (Ukupholisa emanzini)	300 - 400	364 - 444
		400 - 450	321 - 415
		510 - 550	241 - 286
		540 - 580	228 - 269
		580 - 640	192 - 228
0.45 - 0.55 (Iqela elincinci)	830 - 810 (Ukupholisa emanzini okanye kwi-oyile)	550 - 630	220 - 240
		450	≈ 269
		550	≈ 248
		650	≈ 228
0.30 - 0.40 (Iqela leMisa)	840 -880 (Ukupholisa emanzini okanye kwi-oyile)	520 - 550	229 - 269
		530 - 560	217 - 255
		540 - 570	207 - 241
		550 - 580	187 - 229
0.40 - 0.50 (Iqela lobunzima)	820 - 840 (Ukupholisa emanzini okanye kwi-oyile)	530 - 560	229 - 269
		550 - 580	217 - 255
		560 - 590	207 - 241
		570 - 600	187 - 229