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(1)Depth of casting hole
 | Through Hole 2mm≤D＜4mm H≤2D 4mm≤D＜8mm H≤4D D≥8mm H≤5D |  | Blind Hole 2mm≤D＜4mm L≤D 4mm≤D＜8mm L≤2D D≥8mm L≤2.5D Dmin﹦2mm |
The scope can be enlarged by the use of pre-formed ceramic cores at additional cost,only economical for large quantities
(2)Minimum wall thickness：2mm(1mm for small area)
(3)Radius of Rounds and fillest
(4)Surface Roughness：Ra1.6-3.2
(5)Casting Weight：2g-50kg
(6)Annual output：600 tons
 | R≥0.3mm |  | R≥0.5mm |
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Equalize wall thickness | Avoid sharp change in thicknes |
 |  |
Avoid sharp angle | Avoid sharp angle |
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Avoid sharp angle | Avoid cross section |
Linear Tolerance
Nominaldimension (mm) | Length，width，height (mm) | Centre line distances (mm) | ||||||||
D1 | D2 | D3 | D1 | D2 | ||||||
From | To | Tolerance | Field | Tolerance | Field | Tolerance | Field | Tolerance | Tolerance | |
0 | 6 | 土0.10 | 0.2 | 土0.08 | 0.16 | 土0.06 | 0.12 | 土0.25 | 土0.16 | |
6 | 10 | 土0.12 | 0.24 | 土0.10 | 0.2 | |||||
10 | 14 | 土0.15 | 0.3 | 土0.12 | 0.24 | 土0.09 | 0.18 | |||
14 | 18 | 土0.20 | 0.4 | 土0.14 | 0.28 | |||||
18 | 24 | 土0.25 | 0.5 | 土0.17 | 0.34 | 土0.12 | 0.23 | 土0.32 | 土0.20 | |
24 | 30 | 土0.30 | 0.6 | 土0.20 | 0.4 | 土0.14 | 0.27 | |||
30 | 40 | 土0.37 | 0.74 | 土0.25 | 0.5 | 土0.17 | 0.33 | 土0.50 | 土0.30 | |
40 | 50 | 土0.44 | 0.88 | 土0.30 | 0.6 | 土0.20 | 0.39 | |||
50 | 65 | 土0.52 | 1.04 | 土0.38 | 0.76 | 土0.23 | 0.46 | 土0.71 | 土0.45 | |
65 | 80 | 土0.60 | 1.2 | 土0.46 | 0.92 | 土0.27 | 0.53 | |||
80 | 100 | 土0.68 | 1.38 | 土0.53 | 1.06 | 土0.30 | 0.6 | 土0.90 | 土0.60 | |
100 | 120 | 土0.76 | 1.52 | 土0.60 | 1.2 | 土0.33 | 0.66 | |||
120 | 140 | 土0.84 | 1.68 | 土0.65 | 1.3 | 土0.36 | 0.71 | 土1.15 | 土0.85 | |
140 | 160 | 土0.92 | 1.84 | 土0.72 | 1.44 | 土0.38 | 0.76 | |||
160 | 180 | 土1.02 | 2.04 | 土0.80 | 1.6 | 土0.42 | 0.81 | |||
180 | 200 | 土1.12 | 2.24 | 土0.88 | 1.76 | 土0.43 | 0.86 | 土1.80 | 土1.00 | |
200 | 225 | 土1.28 | 2.56 | 土0.95 | 1.9 | 土0.47 | 0.93 | |||
225 | 250 | 土1.44 | 2.88 | 土1.05 | 2.1 | 土0.51 | 1.02 | |||
250 | 280 | 土1.64 | 3.28 | 土1.15 | 2.3 | 土0.56 | 1.12 | 土2.20 | 土1.25 | |
280 | 315 | 土1.84 | 3.68 | 土1.25 | 2.5 | 土0.63 | 1.26 | |||
315 | 355 | 土2.10 | 4.2 | 土1.40 | 2.6 | 土0.71 | 1.42 | 土2.60 | 土1.60 | |
355 | 400 | 土2.40 | 4.8 | 土1.60 | 3.2 | 土0.80 | 1.6 | |||
D1: General dimension tolerances
D2: Applicable to important dimensions requiring close tolerances
D3: Premium tolerances require additional operations at extra cost,
Only applied to a few special dimensions
Angle Tolerance: 土0.5° to土1°
Straightess:0.005”per inch
If you are looking for a silica sol investment casting manufacturer to produce various construction and hardware-related accessories for you. Then we are your best choice.
To improve our services of investment castings and deliver finished products to our customers, apart from producing blank casting parts , we can also supply value-added services in below:
Machining is the process used to cut and manipulate raw material (blank investment casting parts) of a finished product to ensure precision for unique shapes. Cutting, drilling, forming, grinding, and more are used to create final machined investment castings.
Heat Treatment is a method of controlled heating and cooling of metals to alter their mechanical and physical properties without changing the product shape.
Products produced by silica sol investment casting technology have the advantages of complex shapes, high dimensional accuracy, surface finish and high dimensional accuracy. If products need extra surface Treatment,we can supply Polished galvanized, nickel-plated, electroplated, chrome-plated,Surface grinding, sandblasting, powder coating,Anodizing, acid treatment, polishing, DACROMET and so on .
Silica sol investment casting is the most common production method in modern industry. It can cast all kinds of complex and Precision casting. The common assembly services mainly for automobile parts, engineering components and other precision metal cast parts.
If need testing ,we can supply all kinds of quality testings according to your needs ,includeHardness Testing,Mechanical Testing,Magnetic Particle Inspection,X-Ray Testing,Leak Testing,Ultrasonic Inspection etc.
A wide range of carbon steel, low alloy steel and Stainless Steel are available on Customer’s specifications.
Casting materials being processed | Material standards | Materials category | C | Si | Mn | P≤ | S≤ | Cr | Ni | Mo | Cu | Nb |
CF-8(304) | USA ASTM A743 A743M-93a | Austenitic Stainless Steel | ≤0.08 | ≤2.0 | ≤1.5 | 0.04 | 0.04 | 18.0-21.0 | 8.0-11.0 | |||
CF-8M(316) | USA ASTM A743 A743M-93a | Austenitic Stainless Steel | ≤0.08 | ≤2.0 | ≤1.5 | 0.04 | 0.04 | 18.0-21.0 | 9.0-12.0 | 2.0-3.0 | ||
CF-3M(316L) | USA ASTM A743 A743M-93a | Austenitic Stainless Steel | ≤0.03 | ≤1.5 | ≤1.5 | 0.04 | 0.04 | 17.0-21.0 | 9.0-13.0 | 2.0-3.0 | ||
1.4581 | Germany DIN EN 10283 | Austenitic Stainless Steel | ≤0.07 | ≤1.5 | ≤1.5 | 0.04 | 0.03 | 18.0-20.0 | 9.0-12.0 | 2.0-2.5 | ≥8*C,≤1.0 | |
CF-16F(303T) | Special For Customer | Austenitic Stainless Steel | ≤0.15 | ≤1.0 | ≤2.0 | 0.03 | 0.08-0.13 | 17.0-19.0 | 8.0-10.0 | ≤0.6 | ||
SCS14 | Japan JIS G5121 1991 | Austenitic Stainless Steel | ≤0.08 | ≤2.0 | ≤2.0 | 0.04 | 0.04 | 17.0-20.0 | 10.0-14.0 | 2.0-3.0 | ||
CB7Cu-1 (17-4PH) | USA ASTM A743 A743M-93a | Precipitation-hardening Stainless Steel | ≤0.07 | ≤1.0 | ≤0.7 | 0.035 | 0.03 | 15.5-17.7 | 3.6-4.6 | 2.5-3.2 | 0.15-0.35 | |
430 | USA AISI | Ferritic Stainless Steel | ≤0.12 | ≤1.0 | ≤1.0 | 0.04 | 0.03 | 16.0-18.0 | ||||
CA-40(2Cr13) | USA ASTM A743 A743M-93a | Martensitic Stainless Steel | 0.20-0.40 | ≤1.5 | ≤1.0 | 0.04 | 0.04 | 11.5-14.0 | ≤1.0 | |||
1.4059 | Germany DIN EN 10283 | Martensitic Stainless Steel | 0.2-0.27 | ≤1.0 | ≤1.0 | 0.045 | 0.03 | 15.0-17.0 | 1.25-2.5 | |||
IC 1020 | USA ICI | Carbon Cast Steel | 0.15-0.25 | 0.2-1.0 | 0.2-0.6 | 0.04 | 0.045 | ≤0.35 | ≤0.5 | ≤0.25 | ||
IC 1030 | USA ICI | Carbon Cast Steel | 0.25-0.35 | 0.2-1.0 | 0.7-1.0 | 0.04 | 0.045 | ≤0.35 | ≤0.5 | |||
IC 1040 | USA ICI | Carbon Cast Steel | 0.35-0.45 | 0.2-1.0 | 0.7-1.0 | 0.04 | 0.045 | ≤0.35 | ≤0.5 | |||
IC 1050 | USA ICI | Carbon Cast Steel | 0.45-0.55 | 0.2-1.0 | 0.7-1.0 | 0.04 | 0.045 | |||||
IC 4140 | USA ICI | Alloy Cast Steel | 0.35-0.45 | 0.2-0.8 | 0.7-1.0 | 0.04 | 0.045 | 0.8-1.1 | ≤0.5 | 0.15-0.25 | ||
IC 4150 | USA ICI | Alloy Cast Steel | 0.45-0.55 | 0.2-0.8 | 0.75-1.0 | 0.04 | 0.04 | 0.8-1.1 | 0.15-0.25 | |||
IC 4340 | USA ICI | Alloy Cast Steel | 0.35-0.45 | 0.2-0.8 | 0.7-1.0 | 0.04 | 0.045 | 0.7-0.9 | 1.65-2.00 | 0.2-0.3 | ||
IC 8620 | USA ICI | Alloy Cast Steel | 0.15-0.25 | 0.2-0.8 | 0.65-0.95 | 0.04 | 0.045 | 0.4-0.7 | 0.4-0.7 | 0.15-0.25 | ||
GS-25CrMo4 | Germany DIN 17182-85 | Alloy Cast Steel | 0.22-0.29 | 0.3-0.5 | 0.5-0.8 | 0.035 | 0.035 | 0.9-1.2 | ＜0.3 | 0.15-0.3 | ||
ZGMn13-2 | China GB5680-1998 | High-Mn Wear- resistantCast Steel | 1.0-1.4 | 0.3-1.0 | 11.0-14.0 | 0.09 | 0.05 | |||||
1.4136 | Germany DIN 17465-77 | Wear-resistant Cast Steel | 0.5-0.9 | ≤2.0 | ≤1.0 | 0.045 | 0.03 | 27.0-30.0 | 2.0-2.5 | |||
CS-2 | USA ASTM A597-93 | Alloy Tool Cast Steel | 0.45-0.55 | 0.9~1.2 | ≤0.75 | 0.03 | 0.03 | 0.4-0.6 | ||||
CS-7 | USA ASTM A597-9３ | Alloy Tool Cast Steel | 0.50-0.60 | ≤1 | 0.5-0.8 | 0.03 | 0.03 | 3.0-3.5 | 1.2-1.6 |