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Compact of common defects and the reasons
by：Waxing
2020-10-01
Compact of common defects and the reasons are as follows: (
1)
Density is not homogeneous.
Reasons are: 1)
Each part compression ratio is inconsistent;
2)
Mould finish low, increase the friction resistance;
3)
Insufficient lubrication;
4)
The size is not reasonable,
)
;
5)
Right way.
(
2)
Crack.
Reasons are: 1)
Uneven density;
2)
Poor formability, powder compact elastic aftereffect;
3)
Demoulding way is wrong;
4)
Mould rigidity is poor;
5)
Mould taper backwards.
(
3)
Edge drop horn.
Reasons are: 1)
Powder formability is poor;
2)
The compact density is low.
(
4)
Surface scratch.
Reasons are: 1)
The mold surface scratch;
2)
A tumor.
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