What are the requirements for surface roughness in Dalian shot blasting processing? How to conduct surface quality inspection?

Dalian shot blasting is a commonly used surface treatment method, which generates a large amount of impact force on the surface of the workpiece through high-speed rotating shot blasting, removes surface impurities, improves surface quality, and improves material hardness and wear resistance. Shot blasting is widely used in fields such as automobiles, aerospace, mechanical manufacturing, construction, and rail transit, and is of great significance in improving product quality and working environment. With the development of technology and industrial progress, shot blasting processing technology will continue to innovate and progress, providing more and better solutions for various industries.

One of the advantages of shot blasting is its ability to completely remove stains and impurities from metal surfaces, especially for surfaces that are difficult to clean, such as welded joints, oxide layers, and casting sand, which have good cleaning effects. At the same time, shot blasting can also provide roughness and surface treatment for subsequent coating, coating, and coating adhesion. Another advantage is that shot blasting can improve the strength and wear resistance of metal surfaces. During the spraying process, metal particles impact the metal surface at high speed, thereby improving its surface hardness and wear resistance. This is of great significance for high-strength metal parts in fields such as mechanical manufacturing, automotive, and aerospace.

What are the requirements for surface roughness in Dalian shot blasting processing? How to conduct surface quality inspection?

When conducting surface quality testing, we can use various methods to evaluate surface roughness. The following will introduce several common surface quality testing methods:

Visual inspection: Conduct a preliminary evaluation of the unevenness of the surface of an object through visual observation. This method is simple and intuitive, but not precise enough.

Touch detection: By touching the surface of an object, one can sense its unevenness. This method requires some experience and professional knowledge, and the evaluation of subtle differences may not be accurate enough.

Instrument measurement: Use surface roughness measurement instruments such as Raman spectroscopy, scanning electron microscopy, etc. to perform high-precision measurements on the surface of objects. This method can provide accurate numerical results, but requires professional equipment and operational skills.

Optical measurement: Utilizing optical principles to measure surface roughness through reflection and diffraction of light. This method can provide a more accurate evaluation of surface quality, and common optical measurement devices include laser triangulation instruments, surface profilers, etc.

The principle of shot blasting processing is to use the rotating shot blasting wheel in the shot blasting equipment to cast the shot while rotating at high speed, and achieve surface treatment through the impact between the shot blasting and the surface of the workpiece. The shot blasting wheel is filled with shot blasting material composed of high-strength and wear-resistant shot blasting particles. When the shot blasting wheel rotates at high speed, the shot blasting material forms a dense layer along the inner wall of the wheel shell. Through the rotation and thrust of the shot blasting wheel, the shot blasting material is ejected from the shot blasting wheel. After being accelerated by the accelerator, the shot blasting material collides with the surface of the workpiece to remove impurities on the surface.

Shot blasting can also improve the roughness and appearance of metal surfaces. By selecting different sandblasting materials and parameters, different surface quality and texture effects can be obtained to meet the surface treatment needs of different industries.