Technical Parameters1.Linear Tolerance(mm) | 2.Limit Dimension for Cast Holes | |||||
Dimensions | Normal | Premium | Diagram | Hole Dia (mm) | L/D | |
0-10 | ±0.12 | ±0.10 |
| Φ2-Φ3 | L/D≤2 | |
11-15 | ±0.20 | ±0.13 | ||||
16-20 | ±0.25 | ±0.15 | Φ4-Φ7 | L/D≤5 | ||
21-30 | ±0.30 | ±0.20 | ||||
31-50 | ±0.40 | ±0.25 | ≥Φ8 | L/D≤10 | ||
51-75 | ±0.50 | ±0.35 | ||||
76-100 | ±0.65 | ±0.45 |
| Φ2-Φ3 | L/D≤1 | |
101-125 | ±0.80 | ±0.60 | ||||
126-150 | ±1.00 | ±0.70 | Φ4-Φ7 | L/D≤2.5 | ||
151-175 | ±1.20 | ±0.80 | ||||
176-200 | ±1.50 | ±0.90 | ≥Φ8 | L/D≤3.5 | ||
201-250 | ±1.80 | ±1.10 | Deeper holes can be casted by using soluble cores and ceramic cores. | |||
>250 | ±0.8% | ±0.5% | ||||
3. Angle Tolerance | ||||||
Angle Type |
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Normal | ±1º | ±2º | ||||
Premium | ±0.5º | ±1º | ||||
4.Tolerance for Flatness, Straightness and Roundness | 5.Size and weight range | |||||
Cast Dimension(mm) | Normal | Premium | Items | Size | Premium | |
0-25 | 0.2 | 0.1 | Outline Dimension | 1000X900X600 | <500 | |
26-50 | 0.3 | 0.2 | Weight(KG) | 0.005-120 | 0.5-5.0 | |
51-100 | 0.5 | 0.3 | Min. Wall thickness(mm) | 0.3 | 8-15 | |
101-150 | 0.8 | 0.4 | ||||
6.Surface Roughness(Ra/µm) | ||||||
Rough Castings | Weight>5KG | 6.3 | The surface finish for the casting we can provide with are as the following: Blacking, Zinc plating,Chrome plating and Nickel plating for the carbon steel and the low alloy steel castings; Tumbling, Dull polishing, Mirror polishing, Electrolytic polishing and Passivation treatment for the stainless steel castings. | |||
Weight≤5KG | 3.2 | |||||
Finished Castings | 0.8-1.6 | |||||
