Chinese Professional Stainless Steel Lost Wax Casting - Gray Cast Iron Investment Casting – RMC Foundry

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Our business puts emphasis over the administration, the introduction of talented staff, plus the construction of employees building, striving hard to boost the standard and liability consciousness of staff members. Our corporation successfully attained IS9001 Certification and European CE Certification of Aluminium Casting , Steel Investment Casting Parts , Steel Investment Casting Supplier , We honor our core principal of Honesty in business, priority in service and will do our best to offer our customers with high quality products and excellent service.

Chinese Professional Stainless Steel Lost Wax Casting - Gray Cast Iron Investment Casting – RMC Foundry Detail:

Gray cast iron castings are usually produced by sand casting process, however, for some castings which require precision accuracy and have complex structure, the investment casting process is also a good choice.

When we cast the gray iron, we strictly follow the chemical composition and mechanical properties according to the stardards or requirements from the customers. Besides, we have the ability and equipment to test if there is casting defects inside the gray iron sand castings.

Though cast irons can have a carbon percentage between 2 to 6.67, the practical limit is normally between 2 and 4%. These are important mainly because of their excellent casting qualities. Gray iron is cheaper than ductile iron, but it has much lower tensile strength and ductility than ductile iron. Gray iron can not replace the carbon steel, while the ductile iron could replace the carbon steel in some situation due the high tensile strength, yield strength and elongation of ductile iron.

Investment (lost wax) casting is a method of precision casting complex near-net-shape details using replication of wax patterns. Investment casting or lost wax is a metal casting process that typically uses a wax pattern surrounded by a ceramic shell to make a ceramic mold. When the shell dries, the wax is melted away, leaving only the mold. Then the casting component is formed by pouring molten metal into the ceramic mold.

Silica sol casting process is the main investment casting process of RMC investment casting foundry. We have been developing new technology of adhesive material to achieve much more economical and effective adhesive material to build the slurry shell. It is a overwhelming trend that Silica sol casting process replaces the rough inferior water glass process, especially for stainless steel casting and alloy steel casting. Besides the innovated molding material, the silica sol casting process has also being innovated to much steadier and less heat expanding.

Item according to DIN EN 1561	Measure	Unit	EN-GJL-150	EN-GJL-200	EN-GJL-250	EN-GJL-300	EN-GJL-350
Item according to DIN EN 1561	Measure	Unit	EN-JL 1020	EN-JL 1030	EN-JL 1040	EN-JL 1050	EN-JL 1060
Tensile Strength	Rm	MPA	150-250	200-300	250-350	300-400	350-450
0.1% Yield Strength	Rp0,1	MPA	98-165	130-195	165-228	195-260	228-285
Elongation Strength	A	%	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8
Compressive Strength	σdB	MPa	600	720	840	960	1080
0,1% Compressive Strength	σd0,1	MPa	195	260	325	390	455
Flexural Strength	σbB	MPa	250	290	340	390	490
Schuifspanning	σaB	MPa	170	230	290	345	400
Shear Stress	TtB	MPa	170	230	290	345	400
Modules of elasticity	E	GPa	78 – 103	88 – 113	103 – 118	108 – 137	123 – 143
Poisson number	v	–	0,26	0,26	0,26	0,26	0,26
Brinell hardness		HB	160 – 190	180 – 220	190 – 230	200 – 240	210 – 250
Ductility	σbW	MPa	70	90	120	140	145
Tension and pressure change	σzdW	MPa	40	50	60	75	85
Breaking Strength	Klc	N/mm3/2	320	400	480	560	650
Density		g/cm3	7,10	7,15	7,20	7,25	7,30

gray iron castings

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We know that we only thrive if we can guarantee our combined price competiveness and quality advantageous at the same time for Chinese Professional Stainless Steel Lost Wax Casting - Gray Cast Iron Investment Casting – RMC Foundry, The product will supply to all over the world, such as: Hyderabad , Borussia Dortmund , America , Our advanced equipment, excellent quality management, research and development ability make our price down. The price we offering may not be the lowest, but we guarantee it is absolutely competitive! Welcome to contact us immediately for future business relationship and mutual success!

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Hope that the company could stick to the enterprise spirit of "Quality, Efficiency, Innovation and Integrity", it will be better and better in the future.