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Factory Supply Bronze Investment Casting - Copper Alloy Investment Casting Product – RMC Foundry

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Factory Supply Bronze Investment Casting - Copper Alloy Investment Casting Product – RMC Foundry Detail:

Investment casting, which is also known lost wax casting or precision casting, refers to the formation of ceramic around the wax patterns to create a multi or single part mold to receive molten metal. This process utilizes an expendable injection molded wax pattern process to achieve complex forms with exceptional surface qualities. To create a mold, a wax pattern, or cluster of patterns, is dipped into ceramic material several times to build a thick shell. De-wax process is then followed by the shell dry process. The wax-less ceramic shell is then produced. Molten metal is then poured into the ceramic shell cavities or cluster, and once solid and cooled, the ceramic shell is broken off to reveal the final cast metal object. Precision investment castings can achieve exceptional accuracy for both small and large casting parts in a wide range of materials.

The Steps of Investment Casting Process:
During the investment casting process, a wax pattern is coated with a ceramic material, which, when hardened, adopts the internal geometry of the desired casting. In most cases, multiple parts are cast together for high efficiency by attaching individual wax patterns to a central wax stick called a sprue. The wax is melted out of the pattern – which is why it is also known as the lost wax process – and molten metal is poured into the cavity. When the metal solidifies, the ceramic mold is shaken off, leaving the near net shape of the desired casting, followed by finishing, testing and packaging.

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.

There are several reasons to choose RMC investment casting foundry as your source for investment castings, these include:
- Engineering centric with a metal casting focus
- Extensive experience with complex geometries and hard-to-manufacture parts
- A broad range of materials, including ferrous and non-ferrous alloys
- In-house CNC machining capabilities
- One-stop solutions for investment castings and secondary process
- Consistent quality guaranteed
- Teamwork including toolmakers, engineers, foundryman, machinist and production technicians.

As the copper-based alloys, brass and bronze can be formed into highly complex parts, making them ideal for the investment casting process. Constant cost fluctuations can make these materials very price sensitive, making waste very costly, especially when considering CNC machining and/or forging as a manufacturing process to produce your casting parts. Pure copper is not usually cast. 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 forming 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.

Brass is an alloy composed of copper and zinc. Brass composed of copper and zinc is called ordinary brass. If it is a variety of alloys composed of more than two elements, it is called special brass. Brass is a copper alloy with zinc as the main element. As the zinc content increases, the strength and plasticity of the alloy increase significantly, but the mechanical properties will decrease significantly after exceeding 47%, so the zinc content of brass is less than 47%. In addition to zinc, cast brass often contains alloying elements such as silicon, manganese, aluminum, and lead.

Casting brass has higher mechanical properties than bronze, but the price is lower than bronze. Cast brass is often used for general purpose bearing bushes, bushings, gears and other wear-resistant parts and valves and other corrosion-resistant parts. Brass has strong wear resistance. Brass is often used to make valves, water pipes, connecting pipes for internal and external air conditioners, and radiators.

 

Materials for Investment Casting Process at RMC Foundry
Category China Grade US Grade Germany Grade
Ferritic Stainless Steel 1Cr17, 022Cr12, 10Cr17, 430, 431, 446, CA-15, CA6N, CA6NM 1.4000, 1.4005, 1.4008, 1.4016, GX22CrNi17, GX4CrNi13-4
Martensitic Stainless Steel 1Cr13, 2Cr13, 3Cr13, 4Cr13, 410, 420, 430, 440B, 440C 1.4021, 1.4027, 1.4028, 1.4057, 1.4059, 1.4104, 1.4112, 1.4116, 1.4120, 1.4122, 1.4125
Austenitic stainless steel 06Cr19Ni10, 022Cr19Ni10,
06Cr25Ni20, 022Cr17Ni12Mo2, 03Cr18Ni16Mo5
302, 303, 304, 304L, 316, 316L,   329, CF3, CF3M, CF8, CF8M, CN7M, CN3MN 1.3960, 1.4301, 1.4305, 1.4306, 1.4308, 1.4313, 1.4321, 1.4401, 1.4403, 1.4404, 1.4405, 1.4406, 1.4408, 1.4409, 1.4435, 1.4436, 1.4539, 1.4550, 1.4552, 1.4581,
1.4582, 1.4584,
Precipitation Hardening Stainless Steel 05Cr15Ni5Cu4Nb, 05Cr17Ni4Cu4Nb 630, 634, 17-4PH, 15-5PH,  CB7Cu-1 1.4542
Duplex Stainless Steel 022Cr22Ni5Mo3N, 022Cr25Ni6Mo2N A 890 1C, A 890 1A, A 890 3A, A 890 4A, A 890 5A,
A 995 1B, A 995 4A, A 995 5A, 2205, 2507
1.4460, 1.4462, 1.4468, 1.4469, 1.4517, 1.4770
High Mn Steel ZGMn13-1, ZGMn13-3, ZGMn13-5 B2, B3, B4 1.3802, 1.3966, 1.3301, 1.3302
Tool Steel Cr12 A5, H12, S5 1.2344, 1.3343, 1.4528, GXCrMo17,   X210Cr13, GX162CrMoV12
Heat Resistant Steel 20Cr25Ni20, 16Cr23Ni13,
45Cr14Ni14W2Mo
309, 310, CK20, CH20, HK30 1.4826, 1.4828, 1.4855, 1.4865
Nickle-base Alloy HASTELLY-C, HASTELLY-X,  SUPPER22H, CW-2M, CW-6M, CW-12MW, CX-2MW, HX(66Ni-17Cr), MRE-2, NA-22H, NW-22,  M30C, M-35-1, INCOLOY600,
INCOLOY625
2.4815, 2.4879, 2.4680
Aluminum
Alloy
ZL101, ZL102, ZL104 ASTM A356, ASTM A413,  ASTM A360 G-AlSi7Mg, G-Al12
Copper Alloy H96, H85, H65, HPb63-3,
HPb59-1, QSn6.5-0.1, QSn7-0.2
C21000, C23000, C27000, C34500, C37710, C86500,  C87600, C87400, C87800,  C52100, C51100 CuZn5, CuZn15, CuZn35, CuZn36Pb3, CuZn40Pb2, CuSn10P1, CuSn5ZnPb, CuSn5Zn5Pb5
Cobalt-base Alloy UMC50, 670, Grade 31 2.4778

precision lost wax casting foundry

 

INVESTMENT CASTING TOLERANCES
Inches Millimeters
Dimension Tolerance Dimension Tolerance
Up to 0.500 ±.004″ Up to 12.0 ± 0.10mm
0.500 to 1.000” ±.006″ 12.0 to 25.0 ± 0.15mm
1.000 to 1.500” ±.008″ 25.0 to 37.0 ± 0.20mm
1.500 to 2.000” ±.010″ 37.0 to 50.0 ± 0.25mm
2.000  to 2.500” ±.012″ 50.0 to 62.0 ± 0.30mm
2.500 to 3.500” ±.014″ 62.0 to 87.0 ± 0.35mm
3.500 to 5.000” ±.017″ 87.0 to 125.0 ± 0.40mm
5.000 to 7.500” ±.020″ 125.0 to190.0 ± 0.50mm
7.500 to 10.000” ±.022″ 190.0 to 250.0 ± 0.57mm
10.000 to 12.500” ±.025″ 250.0 to 312.0 ± 0.60mm
12.500 to 15.000 ±.028″ 312.0 to 375.0 ± 0.70mm

custom precision investment casting parts

Custom Precision Lost Wax Casting Products


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Factory Supply Bronze Investment Casting -
 Copper Alloy Investment Casting Product – RMC Foundry detail pictures


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  • The company can think what our think, the urgency of urgency to act in the interests of our position, can be said this is a responsible company, we had a happy cooperation!
    5 Stars By Ingrid from Auckland - 2017.08.28 16:02
    In China, we have purchased many times, this time is the most successful and most satisfactory, a sincere and realiable Chinese manufacturer!
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