Investment Casting & Sand Casting Foundry

Castings of Stainless Steel, Alloy & Carbon Steel, Cast Iron, etc.

Custom Investment Casting of Ductile Cast Iron

Short Description:

Casting Metals: Ductile Cast Iron

Casting Manufacturing: Precision Lost Wax Investment Casting

Application: Pump Housing / Body

Weight: 21.60 kg

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

 

OEM custom investment casting pump housing from China casting manufacturer with OEM custom engineering services based on your requirements and drawings. Our engineering experts are happy to help you develop the optimum solutions for your company with Chinese price level but reliable quality.


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China OEM custom ductile cast iron castings by lost wax investment casting process. Ductile iron, which is also known as ducitle cast iron, nodular iron, spheroidal graphite iron, spheroidal graphite cast iron, or just SG iron for short. When graphite is present as small, round, and well-distributed particles, its weakening effect is small and such cast irons would have higher ductility. This type of cast iron is called ductile or nodular iron or spheroidal graphite or simply SG iron. This form of graphite can be achieved by adding elemental magnesium or cerium or a combination of the two elements to molten cast iron. Magnesium is added in quantities of 0.07 to 0. 10% followed by the addition of ferro-silicon to promote graphitization. During solidification, magnesium helps in the distribution of graphite throughout the metal.

Ductile iron has better strength-to-weight ratio, better machinability and higher impact value. Moreove, the ductile iron components are produced by casting process wherein better control of component shape can be achieved compared to drop forging. Thus, many a component such as crank shafts and connecting rods manufactured usually by drop forging is increasingly being replaced by ductile iron castings.

Ductile Iron Comparison  Chemical Composition(%) Matrix Structure
GB/T 1348-1988 ISO 1083:1987(E) ASTM A536-84(2004) EN 1563:-1997 ГОСТ7293 C Si Mn P         S         Mg Re others
QT400-18 400-18 60-40-18① F32800 GJS-400-18 JS1020 вч40 3.6-3.8 2.3-2.7 <0.5 <0.08 <0.025 0.03-0.05 0.02-0.03 Annealed Ferrite
QT400-15 400-15 60-42-10 F32900 GJS-400-15 JS1030 вч40 3.5-3.6 3.0-3.2 <0.5 <0.07 <0.02 0.04 0.02 Annealed Ferrite
QT450-10 450-10 65-45-12 F33100 GJS-450-10 JS1040 вч45 3.4-3.9 2.7-3.0 0.2-0.5 <0.07 <0.03 0.06-0.1 0.03-0.1 Annealed Ferrite
QT500-7 500-7 70-50-05 GJS-500-7 JS1050 вч50 3.6-3.8 2.5-2.9 <0.6 <0.08 <0.025 0.03-0.05 0.03-0.05 Pearlite + Ferrite
QT600-3 600-3 80-60-03② F34100 GJS-600-3 JS1060 вч60 3.6-3.8 2.0-2.4 0.5-0.7 <0.08 <0.025 0.035-0.05 0.025-0.045 Normalized Pearlite
QT700-2 700-2 100-70-03 F34800 GJS-700-2 JS1070 вч70 3.7-4.0 2.3-2.6 0.5-0.8 <0.08 <0.02 0.035-0.065 0.035-0.065 Mo0.15-0.4 Cu0.4-0.8 Mix Microstructure
QT800-2 800-2 - GJS-800-2 JS1080 вч80 3.7-4.0 <2.5 <0.5 <0.07 <0.03 Mo0.39 Cu0.82 Mix Microstructure
QT900-2 900-2 120-90-02 F36200 GJS-900-2 JS1090 вч90 3.5-3.7 2.7-3.0 <0.5 <0.08 <0.025 0.03-0.05 0.025-0.045 Mo0.15-0.25      Cu0.5-0.7 Lower Bainite
① from ASTM A716-2003.  ② from ASTM A476/A476M-2000。

Capabilities of Investment Casting Foundry:
• Max Size: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg - 100 kg
• Annual Capacity: 2,000 tons
• Bond Materials for Shell Building: Silica Sol, Water Glass and their mixtures.
• Tolerances: On Request.

Advantages of Investment Casting Components:
- Excellent and smooth surface finish
- Tight dimensional tolerances.
- Complex and intricate shapes with design flexibility
- Capability to cast thin walls therefore a lighter casting component
- Wide selection of cast metals and alloys (ferrous and non-ferrous)
- Draft is not required in the molds design.
- Reduce the need for secondary machining.
- Low material waste.

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

 

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

 

Investment Casting Technical Data

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Precision Investment Casting Products

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