investment castings (lost wax process) Tolerance
Casting Quality
Technical Data For Design Reference
1. Linear Tolerance (mm)
|
Dimension (mm)
|
≤10
|
10～25
|
25～50
|
50～75
|
75～100
|
100～150
|
150～200
|
200～250
|
＞250
|
|
Normal (mm)
|
±0.15
|
±0.25
|
±0.35
|
±0.50
|
±0.65
|
±1.00
|
±1.50
|
±1.80
|
±1.00%
|
|
Premium (mm)
|
±0.10
|
±0.15
|
±0.25
|
±0.40
|
±0.50
|
±0.75
|
±1.00
|
±1.20
|
±0.60%
|
2. Tolerance for Flatness, Straightness, Roundness
|
Dimension(mm)
|
0～25
|
25～50
|
50～100
|
100～150
|
|
Tolerance(mm)
|
0.2
|
0.4
|
0.6
|
0.8
|
3. Surface Roughness (Ra/μm)
|
Ra6.3～3.2
|
4. Limit Dimension for Casting Hole and Slots
|
Items
|
Diameter of Hole(φmm)
|
Length or Diameter of Hole (L/D)
|
|
|
φ2～φ3
|
L / D ≤ 1
|
|
φ4～φ7
|
L / D≤ 2
|
|
|
≥φ8
|
L / D ≤ 2.5
|
|
|
|
φ2～φ3
|
L / D ≤ 2
|
|
φ4～φ7
|
L / D≤ 4
|
|
|
≥φ8
|
L / D ≤ 5
|
5. Size and Weight Range
|
Items
|
Max
|
Min
|
Best
|
|
Outline Dimensions (mm)
|
1000×300×300
|
20×10×10
|
＜150×100×100
|
|
Weight (Kg)
|
40
|
0.015
|
0.2～5
|
|
Minimum Wall Thickness (mm)
|
─
|
1.0
|
5～15
|
6. Suggestion for Structure Design
|
√
|
|
|
|
|
|
╳
|
|
|
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