Detailed introduction of the difference between shot blasting and sand blasting (ii)

In this article, we introduce the differences between shot blasting and sand blasting (I) in detail. In the following part, we introduce the differences between shot blasting and sand blasting in detail.

Shot blasting is to drive the impeller to rotate by the motor, and by the action of centrifugal force, the ball with diameter between 0.2 and 3.0 (stainless steel ball with casting shot cutting shot, etc.) is thrown to the surface of the workpiece to make the surface of the workpiece reach a certain roughness, to make the workpiece beautiful, or change the welding tensile stress of the workpiece to compressive stress, so as to improve the service life of the workpiece. Shot blasting is used in most fields of machinery, such as building and building MIM car parts, aircraft parts, gun and tank surfaces, Bridges, steel structures, glass, steel plates, pipes, etc. Sand blasting (shot) is to use compressed air as power to spray the sand with diameter of 40~120 or about 0.1~2.0 on the surface of the workpiece, so that the workpiece can achieve the same effect. Pellets of different size, achieve a different treatment effect. Dahong new materials to highlight: shot peening can also play a role in strengthening. Now the domestic equipment has entered a mistake, thought only throws the pill to be able to achieve the strengthened goal. In the United States and Japan, the enterprise used to strengthen is the jet-shot use, each has its own advantages. For example, powder metallurgy miniature gear, powder metallurgy small module gear, such as the workpiece, the shot out Angle can not be changed, can only be used to change the initial speed. But it is a large amount of processing speed, and the shot peening is just the opposite, the shot peening effect is not as good as the shot peening effect.

Sand blasting is a method of cleaning the surface of parts by blowing out quartz sand at high speed with compressed air. Metal powder injection molding factory is also called blowing sand, not only to rust, but also by the way to remove oil, very useful for painting. Usually used for parts surface derusting; (this is the use of small wet sandblasting machines sold on the market. Sand grains are usually corundum and the medium is water.) In steel structure, it is an advanced method to use high-strength bolts to connect. Since high-strength connection USES friction between joint surfaces to transfer force, high quality requirements for the joint surface are very high. At this time, it is necessary to treat the joint surface with sandblasting.

Sand blasting is used for complex shape, easy to remove rust by hand, low efficiency, poor site environment, uneven removal. General sandblasting machine has a variety of specifications of sandblasting guns, as long as the box is not particularly small, can put the gun into clean.

Sand blasting is also one of the most common processes in surface processing of MIM products. Dahong new material has a kind of processing is USES the water as the carrier, drives the emery to process the part, is a kind of sandblasting.

Both shot blasting and sand blasting can play the purpose of cleaning and decontamination of the workpiece. The purpose is to prepare for the subsequent process, that is, the roughness requirements of the next process should be ensured. In addition, in order to achieve the consistency of the surface, shot blasting can strengthen the workpiece, so the sand spraying is not obvious. Generally, shot blasting is a small steel ball, sand blasting is quartz sand. According to different requirements, subtotal. Precision casting almost every day in sandblasting, blasting.

The above information is about the difference between shot blasting and sand blasting, and more about other polishing methods. Welcome to consult the professional team of MIM injection molding technology of guangdong da-hong new material.