Part nine:Die line,extrusion defect analysis and quality control method

Part nine:die line,extrusion defect analysis and quality control method

Die line,extrusion defect analysis and quality control method

Extrusion die line causes and solutions

Extrusion die line

A longitudinal depression or protrusion formed on the surface of extruded profiles.

Die lines are present to some degree in all extrusions and are caused by a roughening of the die bearing.

The main causes of die line:

The main reason: the die land cannot achieve absolute smoothness.

Solutions for die line:

1. Ensure that the surface of the die land is clean, smooth and without sharp edges;

2. Reasonable nitriding treatment to ensure high surface hardness;

3. Correctly modify the dies;

4. Design the die land reasonably, and the die land should not be too long.

Our aluminum profile surface defects brushing and cleaning machine, aluminium profiles polishing machine and aluminum profiles shot blasting machine can remove the die lines effectively, which can increase your profit and reduce NG rate. 

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