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Flow marks
the depth is not great than (mm) 0.07
The surface is not great than percent of the total surface 15
Cold flow marks
The depth is not great than (mm) 1/5 of the wall thickness
1. Can not allow to exist at the same place;
2. The length refer to the spreading length of the defect flow direction
The length is not great than the dimension of the cast max. contour line (mm) 1/10
The number on the surface is not great than 2
The distance to the cast edge is not less than (mm) 4
The distance between two cold flow marks is not less than (mm) 10
Surface cracks
The depth is not great than (mm) 0.10 T
he defect on the cast gate can be 0.20 or 10
The surface is not great than the percent of the total surface 5
Pits Sinking depth is not great than (mm) 0.30
Foreign material marks
The place on the total cast is not great than 1
The percent of the surface with the defect 5
Gas Hole (The average diameter is not great than 3mm)
The place in each 100cm2 surface is not great than 1
Small gas hole and big gas hole can exist in the same part, But the number of the big holes is not great than 3, the total number of the gas holes is not great than 10. The distance between the two gas holes is not less than 10mm.
The number in the total cast is not great than 3
The distance to the edge of the cast is not less than (mm) 3
The raised height of the gas hole is not great than (mm) 0.2
Gas Hole (The average diameter is) 3~6mm)
The place in each 100cm2 surface is not great than 1
The number in the total cast is not great than 1
The distance to the edge of the cast is not less than (mm) 5
The raised height of the gas hole is not great than (mm) 0.3
The defect depth in corner and line (mm)
The cast linear dimension is not great than 100mm 0.5
The defect length is not great than the 5 percent of the length
The cast dimension is great than 100mm 0.8
The total defect
The percent of the defect surface is not great than the total surface 30 |
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