Typical Defects And Causes Of Aluminium Profile System-1

High Quality Lean Coated Tube Supplier explains the typical flaws and causes of the Aluminium Profile System.

1. Aluminum alloy aluminum profiles are bent and twisted, waves

Due to the unreasonable design of the die hole, the extrusion speed is too fast, the die hole lubrication is not appropriate, the guide path is not suitable or the guide is not installed.

2. Bubble and peeling

Due to the excessive wear of the inner diameter of the extrusion cylinder, the gap between the extrusion pad and the cylinder is too large; the extrusion cylinder and the extrusion pad adhere to the oily sewage; the surface of the ingot has pores, blisters, oil stains and the surface of the ingot is too rough; The temperature and the temperature of the ingot are too high, and the filling is too fast; the mold is greased during extrusion.

3. Squeeze crack

Because the temperature of the extruded ingot is too high, the extrusion speed is too fast; the ingot blank is not well processed; the mold design is unreasonable, so that the center-to-edge flow velocity difference is too large, causing cracks in the Aluminium Profile System.

4. Pitting or pockmark

Because the temperature of the barrel and the ingot is too high, the extrusion speed is too fast or uneven; the mold working belt is stuck with metal, not smooth; the hardness of the mold table is not enough or the working belt is wide; the ingot is too long.

5. Scratches and ribs

Due to defects or ribs in the mold work, the mold empty knife has sharp edges and is not smooth; the work surface has foreign matter and is not clean; the hard inclusions in the ingot are blocked in the mold hole and the like.