(1) Manually operated mechanical polishing: It is a polishing method that obtains a smooth surface by removing the polished protrusions by cutting and plastic deformation of the surface of the material. Generally, you use whetstone strips, wool wheels, sandpaper, etc., mainly manual operations, special parts Such as the surface of the rotating body, you can use auxiliary tools such as a turntable, the surface quality requirements can be used ultra-precise grinding method. The ultra-precise grinding polishing adopts a special grinding tool. In the grinding polishing liquid containing abrasives, it is pressed against the surface of the workpiece to be processed for high-speed rotation.

(2) mirror polishing of the mold using a plane grinder

To be able to use a surface grinder for abrasive tool polishing, certain conditions must be met: make sure that the processing surface is purely flat (a little arc can be used), the diameter or diagonal of the workpiece is ≤470mm, and the thickness is ≤200mm; you can use a surface grinder for polishing; simple In other words, it satisfies the planar polishing conditions. The advantages of this polishing method are: fast polishing speed, high yield, suitable for mass production. Take polishing mold steel as an example. The specific method steps are a bit complicated. For details, please refer to mold steel mirror polishing.

The mold steel mirror polishing process is usually divided into three steps: rough grinding, rough polishing and fine polishing. If the flatness of the workpiece itself is good, you can skip the rough grinding step. The choice of grinding fluid is critical.

If the flatness of the product is poor, if the flatness of the product is poor, you need to grind off a certain size to reach a flat surface. This adds to the difficulty, so there are a few points to consider in the selection of the synthetic iron plate. The reason why the disc has higher hardness and better cutting force.

This process is mainly a process of rough throwing and leading angle through white skin. There are three points to note in this process:

The first is the weight. The weight is too light, and the marks on the iron plate cannot be thrown away. The specific weight depends on the hardness of the workpiece.

The second is that this product needs a guide angle, so you need to place a soft leather under the white cloth, which will help the guide angle, but the soft leather should not be too soft, and too soft to have no cutting force. The third is the choice of liquid. The quality of liquids provided by many manufacturers is too ordinary, and it is impossible to achieve good results in a short period of time. This process is also the top priority. Polishing this process is successful. The steps are also speeded up ...

Although fine polishing is not too difficult, it is not easy to ignore. First, this process is prone to minor product scratches, so the quality of the polishing leather and polishing liquid must be guaranteed, and the second is sanitary conditions, requiring employees to do good maintenance.