Na Mea Magnetic Hao Hoohinahina

Hoʻohālikelike Hao Hina				Microstructure (Nā Haʻawina Nui)
Kina（GB/T 9439)	ISO 185	ASTM A48/A48M	EN 1561	Hoʻokumu ʻia matrix
HT100 (HT10-26)	100	No.20 F11401	EN-GJL-100	Pearlite: 30-70％, nā ʻōpala maloʻo; Ferrite: 30-70％; Binary Phosphorus Eutectic: ＜7％
HT150 (HT15-33)	150	No.25A F11701	EN-GJL-150	Pearlite: 40-90％, nā ʻāpana liʻiliʻi; Ferrite: 10-60％; Binary Phosphorus Eutectic: <7％
HT200 (HT20-40)	200	No.30A F12101	EN-GJL-200	Pearlite: ＞95％, nā ʻāpana liʻiliʻi; Ferrite＜5％; Binary Phosphorus Eutectic＜4％
HT250 (HT25-47)	250	No.35A F12401 No.40A F12801	EN-GJL-250	Pearlite: ＞98％ nā ʻāpana lahilahi; Binary Phosphorus Eutectic: <2％
HT300 (HT30-54)	300	No.45A F13301	EN-GJL-300	Pearlite: ＞98％ nā ʻāpana lahilahi; Binary Phosphorus Eutectic: <2％
HT350 (HT35-61)	350	No.50A F13501	EN-GJL-350	Pearlite: ＞98％ nā ʻāpana lahilahi; Binary Phosphorus Eutectic: <1％

 

ʻOkoʻa nui nā waiwai magnetic o ka hao hoʻoheheʻe hina, mai ka haʻahaʻa haʻahaʻa a me ka ikaika coercive kiʻekiʻe i ka permeability kiʻekiʻe a me ka ikaika coercive haʻahaʻa. Aia kēia mau hoʻololi i ka microstructure o ka hao hina hina. ʻO ka hoʻohui ʻana i nā mea hoʻohui i mea e loaʻa ai nā waiwai magnetic i koi ʻia e loaʻa ma ka hoʻololi ʻana i ke ʻano o ka hao hina hina.

Loaʻa i ka Ferrite ke kiʻekiʻe magnetic permeability a me ka nalowale hysteresis haʻahaʻa; ʻO ka pearlite ka mea kū'ē, he haʻahaʻa haʻahaʻa magnetic a me ka poho hysteresis nui. Hoʻokumu ʻia ʻo Pearlite i ferrite e ka annealing heat treatment, hiki ke hoʻonui i ka permeability magnetic i ʻehā mau manawa. Hiki i ka hoʻonui ʻana i nā hua ferrite ke hōʻemi i ka nalowale o ka hysteresis. ʻO ka hele ʻana o ka cementite e hōʻemi i ka nui o ka flux magnetic, permeability a me remanence, ʻoiai e hoʻonui ana i ka permeability a me ka hysteresis loss. ʻO ka loaʻa ʻana o ka graphite coarse e hōʻemi i ka remanence. ʻO ka hoʻololi ʻana mai ka graphite A-type (kahi graphite ʻano flake i puʻunaue like ʻole ʻia me ka ʻole o ke kuhikuhi) i kahi graphite D-type (kahi graphite wili liʻiliʻi me ka hāʻawi kuhikuhi ʻole ma waena o nā dendrites) hiki ke hoʻonui nui i ka induction magnetic a me ka ikaika koi. .

Ma mua o ka hōʻea ʻana i ka wela koʻikoʻi non-magnetic, hoʻonui nui ka piʻi ʻana o ka mahana i ka permeability magnetic o ka hao hina hina. ʻO ka lae Curie o ka hao maʻemaʻe ka mahana hoʻololi α-γ o 770°C. Inā he 5% ka pākēneka nui o ke silikoni, e piʻi ka lae Curie i 730°C. He 205-220°C ka mahana o ke kiko Curie o ka cementite me ka silika.

ʻO ke ʻano matrix o nā māka i hoʻohana maʻamau ʻia o ka hao hina hina ka nui o ka pearlite, a ʻo ko lākou permeability kiʻekiʻe ma waena o 309-400 μH/m.

 

Na Pono Magnetic o ka hao hina hina
Code of Grey Iron	Ka Hui Kemika (%)
	C	Si	Mn	S	P	Ni	Cr
A	3.12	2.22	0.67	0.067	0.13	<0.03	0.04
B	3.30	2.04	0.52	0.065	1.03	0.34	0.25
C	3.34	0.83 - 0.91	0.20 - 0.33	0.021 - 0.038	0.025 - 0.048	0.04	<0.02
Na Mea Magnetic		A		B		C
		ʻO ka pele	Ferrite	ʻO ka pele	Ferrite	ʻO ka pele	Ferrite
Kāpena Carbide w(%)		0.70	0.06	0.77	0.11	0.88	/
Remanence / T		0.413	0.435	0.492	0.439	0.5215	0.6185
Puali Koi / A•m-1		557	199	716	279	637	199
Nalo Hīkini / J•m-3•Hz-1 (B=1T)		2696	-696	2729	1193	2645	938
Ka ikaika o ke kahua mākēneki / kA•m-1 (B=1T)		15.9	-5.9	8.7	8.0	6.2	4.4
Max. Māmā Mākēneki / μH•m-1		396	1960	353	955	400	1703
ʻO ka ikaika o ke kahua mākēneki ke loaʻa ʻo Max. Mākēneki Permeability / A•m-1		637	199	1035	318	1114	239
Kū'ē / μΩ•m		0.73	0.71	0.77	0.75	0.42	0.37

 

Eia ma lalo iho nei nā ʻano mekini o ka hao hina hina.

Na Mea Mekanika o ka Hao Hoolei Hina
Mea e like me DIN EN 1561	Ana	Unite	EN-GJL-150	EN-GJL-200	EN-GJL-250	EN-GJL-300	EN-GJL-350
			EN-JL 1020	EN-JL 1030	EN-JL 1040	EN-JL 1050	EN-JL 1060
Ikaika U'i	Rm	MPA	150-250	200-300	250-350	300-400	350-450
0.1% Ka ikaika hua	Rp0,1	MPA	98-165	130-195	165-228	195-260	228-285
Ka ikaika elongation	A	%	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8
Ka ikaika hoʻopili	σdB	MPa	600	720	840	960	1080
0,1% Ka ikaika hoʻopili	σd0,1	MPa	195	260	325	390	455
Ikaika Flexural	σbB	MPa	250	290	340	390	490
Schuifspanning	σaB	MPa	170	230	290	345	400
ʻOkoʻolua Shear	TtB	MPa	170	230	290	345	400
Nā modula o ka elasticity	E	GPa	78 – 103	88 – 113	103 – 118	108 – 137	123 – 143
Helu Poisson	v	–	0,26	0,26	0,26	0,26	0,26
ʻO Brinell paʻakikī		HB	160 – 190	180 – 220	190 – 230	200 – 240	210 – 250
ʻO ka ductility	σbW	MPa	70	90	120	140	145
Hoʻololi ka manaʻo a me ke kaomi	σzdW	MPa	40	50	60	75	85
Ikaika Haʻihaʻi	Klc	N/mm3/2	320	400	480	560	650
ʻO ka mānoanoa		g/cm3	7,10	7,15	7,20	7,25	7,30