Grey Iron Casting Machinery Part by Investment Casting

Short Description:

Cast Steel: Grey Cast Iron, GG20/EN-GJL-200

Casting Process: Lost Wax Investment Casting + Machining

Unit Weight of Casting: 21.60 kg

Available Surface Treatment: Painting, Anodizing, Passivation, Electroplating, Zinc-plating, Hot-Zinc-Plating, Polishing, Electro-Polishing, Nickel-Plating, Blackening, Geomet, Zintek

Heat Treatment: Quenching, Tempering, Normalizing, Carburization, Nitriding

China OEM custom gray cast iron casting machinery part produced by lost wax investment casting with CNC machining and surface treatment services. We could provide 3.1 Material Certificate of the casting metal according to EN 10204 if you need. Available inspection methods: dimension testing by CMM, non-destructive testing, chemical composition, mechanical properties, hardness testing, static balancing, dynamic balancing, air pressure and water pressure.

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China OEM custom gray iron castings produced by lost wax precision investment casting process.

What Are The Investment Castings Used For?
Investment castings are widely used in pumps and valves, automobile, trucks, hydraulics, forklift trucks and many other industries. Because of their exceptional casting tolerance and exellent finish, the lost wax castings are used more and more. Especially, the stainless steel investment castings play a vital important role in the shipbuilding and boats because they have strong anti-rust performance.

Casting Tolerance Could Reached by Investment Casting:
According to the different binder materials used for making the shell, the investment casting could be divided into silica sol casting and water glass casting. The silica sol investment casting process have better Dimensional Casting Tolerances (DCT) and Geometrical Casting Tolerances (GCT) than water glass process. However, even by same casting process, the Tolerance Grade will be different from each cast alloy due to their various castability. Our foundry would like to talk with you if you have special request on the required tolerances. Here in the following are the general tolerances grade we could reach both by silica sol casting and water glass casting processes separately:
✔ DCT Grade by Silica Sol Lost Wax Casting: DCTG4 ~ DCTG6
✔ DCT Grade by Water Glass Lost Wax Casting: DCTG5 ~ DCTG9
✔ GCT Grade by Silica Sol Lost Wax Casting: GCTG3 ~ GCTG5
✔ GCT Grade by Water Glass Lost Wax Casting: GCTG3 ~ GCTG5

Gray Iron Material Grades
Country	Standard	Equivalent Grades of Grey Iron (Gray Cast Iron)
ISO	ISO 185	100	150	200	250	300	350
China	GB 9439	HT100	HT150	HT200	HT250	HT300	HT350
USA	ASTM A48	-	NO.20	NO.30	NO.35	NO.40	NO.50
USA	ASTM A48	-	NO.25	NO.30	NO.35	NO.45	NO.50
Germany	DIN 1691	GG10	GG15	GG20	GG25	GG30	GG35
Austria	DIN 1691	GG10	GG15	GG20	GG25	GG30	GG35
European	EN 1561	EN-GJL-100	EN-GJL-150	EN-GJL-200	EN-GJL-250	EN-GJL-300	EN-GJL-350
Japan	JIS G5501	FC100	FC150	FC200	FC250	FC300	FC350
Italy	UNI 5007	G10	G15	G20	G25	G30	G35
France	NF A32-101	-	FGL150	FGL200	FGL250	FGL300	FGL350
UK	BS 1452	100	150	200	250	300	350
India	IS 210	-	FG150	FG200	FG260	FG300	FG350
Spain	UNF	-	FG15	FG20	FG25	FG30	FG35
Belgium	NBN 830-01	FGG10	FGG15	FGG20	FGG25	FGG30	FGG35
Australia	AS 1830	-	T150	T220	T260	T300	T350
Sweden	SS 14 01	O110	O115	O120	O125	O130	O135
Norway	NS11 100	SJG100	SJG150	SJG200	SJG250	SJG300	SJG350
Min. Tensile Strength (Mpa)		100	150	200	250	300	350
RMC, a China iron foundry, is producing various grey iron casting products for overseas customers in USA, Australia, UK, Spain, Germany, Norway, Finland, Russia and Italy. Production according to standards ASTM A48, A536; DIN 1691, 1693; ISO 185, 1083; EN 1561, 1563; DIN 1691, 1693; AS 1830, 1831; JIS, UNI, NF, BS, UNF, NBN, AS, SS, NS. Material grades including:ISO185: 100 150 200 250 300 ASTM A48: NO.20 NO.25 NO.30 NO.35 NO.40 NO.45 DIN 1691: GG10 GG15 GG20 GG25 GG30 EN 1561: EN-GJL-100 EN-GJL-150 EN-GJL-200 EN-GJL-250 EN-GJL-300 BS 1452: 100 150 200 250 300 AS 1830: T150 T220 T260 T300Production Process: Sand Casting, Automatic Molding, Machine Molding, Shell Molding, Green Sand Casting, Resin Sand Casting
Gray Iron Applications
The following is the common application for each degree of grey cast iron for your reference.
HT100 (GG10, EN-GJL-100):
For small loads, the friction and wear no special requirements for important castings, such as protective cover, cover, oil pan, hand wheels, frame, floor, hammer, small handle, etc.
HT150 (GG15, EN-GJL-150):
Under moderate load of castings, such as the base, frame, box, knife, bed, bearing seat, table, wheels, cover, pump, valve, pipe, flywheel, motor blocks and other
HT200 (GG20, EN-GJL-200):
Requirements withstand greater load and a certain degree of tightness or corrosion resistance of the more important castings such as cylinder, gear, base, flywheels, bed, cylinder block, cylinder liner, piston, gear box, brake wheel, coupling Plate, medium pressure valve, etc.
HT300 (GG30, EN-GJL-300):
Under high load, wear and high air tightness important castings, such as heavy machine tools, shears, presses, automatic lathe bed, frame, frame, high-pressure hydraulic parts, piston rings, force larger gear, Cams, bushings, large engine crankshaft, cylinder block, cylinder liner, cylinder head, etc.