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How to remove mildew on the surface of die-casting aluminum

  • Author:June
  • Source:www.xy-global.com
  • Release on:2022-03-15
How to remove mildew on the surface of die-casting aluminum? Let's take a brief look at it:

1. Shot blasting method, shot blasting is a cold treatment process, which is divided into shot blasting finishing and shot blasting strengthening. The surface of the workpiece is strengthened by the continuous charging of the projectile, which forces the surface and surface of the target to undergo the following transformations during the cyclic deformation process: 1. The microstructure is modified;

2. The non-uniform plastic deformation outer layer introduces residual compressive stress, and the inner surface layer produces residual tensile stress;

3. The outer surface roughness changes. However, the shot blasting sensitivity is poor, and due to the limitation of the place, there is some confusion when arranging the workpiece. The structure of the equipment is complex, and there are many wearing parts. The unique is that the blades and other parts wear quickly, the maintenance man-hours are long, the cost is high, and the one-time investment is large.

2. Sandblasting method, using sandblasting for surface treatment of die-casting aluminum, the process of finishing and roughening the surface of the substrate by using the charging action of high-speed sand flow. The compressed air is used as the driving force to cause the high-speed radiation beam to radiate the spray material (copper ore, quartz sand, emery, iron sand, Hainan sand) to the surface of the workpiece to be treated at a high speed, so that the surface or form of the workpiece changes, and the impact force is large. The finishing effect is obvious. However, the treatment of thin-plate workpieces by sandblasting can easily deform the workpiece, and the steel shot hits the surface of the workpiece to deform the metal substrate. Sandblasting cannot be completely eliminated.