Grey Simẹnti Iron oofa Properties

Gray Iron lafiwe				Microstructure (Awọn ipin Iwọn didun) (）)
China (GB/T 9439)	ISO 185	ASTM A48/A48M	EN 1561	Matrix Be
HT100 (HT10-26)	100	No.20 F11401	EN-GJL-100	Pearlite: 30-70 , awọn iyẹfun isokuso; Ferrite: 30-70 ; Eutectic Phosphorus Alakomeji: ＜7％
HT150 (HT15-33)	150	No.25A F11701	EN-GJL-150	Pearlite: 40-90 , alabọde isokuso flakes; Ferrite: 10-60; Eutectic Phosphorus Alakomeji:
HT200 (HT20-40)	200	No.30A F12101	EN-GJL-200	Pearlite: 95 , awọn flakes alabọde; Ferrite 5; Eutectic phosphorus alakomeji
HT250 (HT25-47)	250	No.35A F12401 No.40A F12801	EN-GJL-250	Pearlite: 98 ％ awọn flakes tinrin alabọde; Eutectic Phosphorus Alakomeji: ＜2％
HT300 (HT30-54)	300	No.45A F13301	EN-GJL-300	Pearlite: 98 ％ awọn flakes tinrin alabọde; Eutectic Phosphorus Alakomeji: ＜2％
HT350 (HT35-61)	350	No.50A F13501	EN-GJL-350	Pearlite: 98 ％ awọn flakes tinrin alabọde; Eutectic Phosphorus Alakomeji: ＜1％

 

Awọn ohun-ini oofa ti irin simẹnti grẹy yatọ si lọpọlọpọ, lati kekere permeability ati agbara ipaniyan giga si ayeraye giga ati ipa ipalọlọ kekere. Awọn ayipada wọnyi ni pataki dale lori microstructure ti irin simẹnti grẹy. Ṣafikun awọn eroja alloying lati gba awọn ohun-ini oofa ti o nilo jẹ aṣeyọri nipasẹ yiyipada eto ti irin simẹnti grẹy.

Ferrite ni agbara oofa giga ati pipadanu hysteresis kekere; pearlite jẹ idakeji, o ni agbara oofa kekere ati pipadanu hysteresis nla. Pearlite ti wa ni akoso sinu ferrite nipasẹ annealing ooru itọju, eyi ti o le mu awọn se permeability nipa merin ni igba. Awọn irugbin ferrite ti o tobi si le dinku pipadanu hysteresis. Iwaju ti cementite yoo dinku iwuwo ṣiṣan oofa, permeability ati isọdọtun, lakoko ti o pọ si agbara ati pipadanu hysteresis. Iwaju graphite isokuso yoo dinku isọdọtun. Iyipada lati graphite A-type (graphite ti o ni irisi flake ti o pin ni iṣọkan laisi itọsọna) si graphite D-type (graphite ti o dara ti o dara pẹlu ipinfunni ti kii ṣe itọsọna laarin awọn dendrites) le ṣe alekun ifakalẹ oofa ati ipa ipaniyan ni pataki .

Ṣaaju ki o to de iwọn otutu to ṣe pataki ti kii ṣe oofa, iwọn otutu ga ni pataki mu agbara oofa ti irin simẹnti grẹy pọ si. Aaye Curie ti irin mimọ jẹ iwọn otutu iyipada α-γ ti 770°C. Nigbati ipin-ọpọlọpọ ohun alumọni jẹ 5%, aaye Curie yoo de 730°C. Iwọn aaye Curie ti cementite laisi silikoni jẹ 205-220°C.

Ẹya matrix ti awọn onipò ti o wọpọ ti irin simẹnti grẹy jẹ akọkọ pearlite, ati pe o pọju agbara wọn wa laarin 309-400 μH/m.

 

Awọn ohun-ini oofa ti Irin Simẹnti Grey
Code of Gray Iron	Iṣapọ Kemikali (%)
	C	Si	Mn	S	P	Ni	Cr
A	3.12	2.22	0.67	0.067	0.13	03.03	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
Awọn ohun-ini oofa		A		B		C
		Pearlite	Ferrite	Pearlite	Ferrite	Pearlite	Ferrite
Erogba Carbide w(%)		0.70	0.06	0.77	0.11	0.88	/
Iduroṣinṣin / T		0.413	0.435	0.492	0.439	0.5215	0.6185
Agbara ipa / A•m-1		557	199	716	279	637	199
Pipadanu Hysteresis / J•m-3•Hz-1 (B=1T)		2696	-696	2729	1193	2645	938
Agbara aaye oofa / kA•m-1 (B=1T)		15.9	-5.9	8.7	8.0	6.2	4.4
O pọju. Agbara oofa / μH•m-1		396	Ọdun 1960	353	955	400	Ọdun 1703
Oofa Field Agbara nigbati Max. Oofa Permeability / A• m-1		637	199	1035	318	1114	239
Resistivity / μΩ•m		0.73	0.71	0.77	0.75	0.42	0.37

 

Eyi ni atẹle ni awọn ohun-ini ẹrọ ti irin simẹnti grẹy:

Mechanical Properties of Gray Simẹnti Iron
Ohun kan ni ibamu si DIN EN 1561	Iwọn	Ẹyọ	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
Agbara fifẹ	Rm	MPA	150-250	200-300	250-350	300-400	350-450
0.1% Agbara Ikore	RP0,1	MPA	98-165	130-195	165-228	Ọdun 195-260	228-285
Agbara Ilọsiwaju	A	%	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8
Agbara titẹ	σdB	MPa	600	720	840	960	1080
0,1% Agbara titẹ	σd0,1	MPa	195	260	325	390	455
Agbara Flexural	σbB	MPa	250	290	340	390	490
Schuifspanning	σaB	MPa	170	230	290	345	400
Wahala rirẹ	TtB	MPa	170	230	290	345	400
Modulu ti elasticity	E	GPA	78 – 103	88 – 113	103 – 118	108 – 137	123 – 143
Nọmba oloro	v	–	0,26	0,26	0,26	0,26	0,26
Brinell líle		HB	160 – 190	180 – 220	190 – 230	200 – 240	210 – 250
Agbara	σbW	MPa	70	90	120	140	145
Ẹdọfu ati titẹ iyipada	σzdW	MPa	40	50	60	75	85
Fifọ Agbara	Klc	N/mm3/2	320	400	480	560	650
iwuwo		g/cm3	7,10	7,15	7,20	7,25	7,30