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What are the common defects of the aluminum plate?

  • Author:Dong Xing
  • Release on :2017-12-26
I believe that the aluminum plate enterprises that just started are not very familiar with the common defects of aluminum plates. Here are some common aluminum plate defects for you to avoid causing unnecessary trouble for enterprises due to their carelessness. Harbin Dong Xing Aluminum Co., Ltd is a competent and reliable Aluminum sheet manufacturer china.

1.Plate shape aspect:
(1): Cuoceng strip between the layers and irregular surface dislocation caused by uneven surface. The reasons are as follows: the blank is not smooth, the rolling and coiling tension of the rolling mill is not properly controlled, and the adjustment of the leveling roll is unsuitable.

(2) sloughing: the core is seriously deformed and the roll is not round. Cause: unsuitable tension in the process of curling; external force oppression.

(3) lateral bending: showing the bending of a plate to one side. Cause: the leveling machine is not enough pressure. Harbin Dong Xing Aluminum Co., Ltd could provide you with Aluminum marine sheet

(4) wave: the general name of various unevenness of aluminum and aluminum strips due to uneven deformation. The waves generated by plates and edges are called edge waves. The waves generated in the middle are called intermediate waves. The waves between the middle and the sides, which are neither in the middle nor on the sides, are called the two rib waves, and the smaller and generally round waves are called breaking waves. The reasons are: uneven adjustment of roll gap, unreasonable roll shape control, uneven lubrication, uneven deformation of aluminum plate, unreasonable distribution of channel pressure and so on.
2.Surface aspects:
(1) embossing: due to the reasons of strip wrinkle and broken strip, the irregular chromatic aberration of roller surface is periodically printed to the chromatic aberration of strip surface during rolling process.

(2) bruise: the appearance of the surface of the aluminum plate is a fascicular wound. Cause: mechanical or artificial cause the aluminum plate to produce the fault between the layer and the layer.

(3) edge: after rolling or cutting, the edge of the strip is warped.

(4) corrosion: a spot or flaky white spot or black spot on the surface of an aluminum plate. Cause: production, packaging, transportation, storage process into acid or alkali or water.

(5) surface oil pollution: manifested as surface dirty. Cause: the cooling oil is dirty, and the blow is weak.

(6) scratch: the appearance of the surface of the aluminum plate with a line of the wound. Cause: a rolling guide plate or a convex or glued aluminum; scratch shearing process; artificial lift check on improper.

(7) side side bending: the longitudinal side of the plate and belt presents a nonflat state bending to one side. Cause: the rolling mill is different at both ends of the rolling mill, and the thickness of the two sides of the plate and the material is not consistent.

(8) there is a black spot on the surface: there is a needle like black spot on the surface of the aluminum plate. Cause: the furnace liquid is not clean.

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