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Home > News > Industry news > Causes of defects and defects .....
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Causes of defects and defects of several common aluminum sheets 2

  • Author:Dong Xing
  • Source:aluminummanufacturerchina.com
  • Release on :2017-11-21
2 dimensions:

(1) thickness tolerance: less than 1 tolerance tolerance + 1%, more than 1 + 5%, single error *2 times;

(2) width tolerance: less than 3.2MM + 0.1MM, above 3.2MM is + 0.2MM;

(3) length tolerance: +5-3MM. The cause of thickness tolerance, the problem of thickness gauge, the cause of width tolerance, the improper adjustment of disc shear, the cause of length tolerance and the problem of adjustment of shearing machine.  Harbin Dong Xing Aluminum Co., Ltd is a competent and reliable Aluminum sheet wholesales

3, surface aspects:

(1) embossing: due to the strip wrinkle, broken belt and other reasons, the irregular aberration of the roll surface in the rolling process is periodically printed to the surface of the strip color difference phenomenon.

(2) scratch: the surface of aluminum sheet is a bundle wound. The reason is: mechanical or artificial aluminum plate between the layer and layer of the move.
(3) curling: the edge of the strip is raised after being rolled or sheared. Harbin Dong Xing Aluminum Co., Ltd could provide you with Aluminum sheet 2024.

(4) corrosion: spot or flake white spot or black spot on the surface of aluminum plate. Causes: production, packaging, transportation, storage process into the acid-base or water.

(5) surface oil pollution: the surface is dirty. Causes: dirty cooling oil, poor ventilation.

(6) scratch: the scar on the surface of the aluminum plate is lined with lines. Cause: a rolling guide plate or a convex or glued aluminum; scratch shearing process; artificial lift check on improper.

(7) side bending: the longitudinal side of the plate and belt presents a non straight state bending to one side. The reasons are: the reduction of the ends of the mill is not the same; the thickness of both sides of the plate and strip is inconsistent.

(8) black spots on the surface: needle like black spots on the surface of aluminum plates. The reason is that the furnace fluid is not clean.

These are some of the reasons I have introduced about aluminum plate problems, I hope to be able to help you. If you want to get more information about Harbin Dong Xing Aluminum Co., Ltd, please click Aluminum sheet manufacturer china.