How to eliminate surface scratches on extruded aluminum profiles?

The surface of the aluminum profile extruded product has rough longitudinal or horizontal grooves, scratches, and scratches that are recessed from the surface are mostly caused by foreign objects stuck in the mold, or rough processing at the empty knife. There is also a raised scratch at the corner of the product, which is caused by a crack in the extrusion die. The lateral scratches or scratches are mainly due to the hard objects protruding from the sliding bed to the finished sawing table when the products are transported laterally to the finished sawing table, and the products are scratched, and some are caused by loading and transportation.The scratches are aluminum profiles Common surface defects in the extrusion process. So is there any way to eliminate scratches?

1. The working belt of the extrusion die should be smooth and smooth, and the empty knife of the extrusion die should also be smooth.

2. Carefully check when installing the mold to prevent the mold with small cracks from being used. When designing the mold, pay attention to the fillet radius.

3. Regularly check the cooling bed and the finished product storage platform to prevent scratches from the product with hard protrusions.

4. When loading, the partitions that are softer than the product should be placed, and the transportation and lifting should be stable and careful.