Steel grit and steel shot are commonly used grinding, polishing and cleaning materials in modern industry and are widely used in many fields. They play a vital role in many manufacturing and processing processes due to their high strength, hardness and wear resistance. The following are several typical application cases of steel grit and steel shot:
#### 1. **Casting surface cleaning**
In the foundry industry, steel sand and steel shot are widely used for surface cleaning of castings. During the casting process, the metal liquid flows into the mold to form a casting, but there are usually gating systems, scale or other impurities on the surface. Steel sand and steel shot as cleaning media can effectively remove these impurities and improve the surface quality of castings. Especially during the post-processing of steel and aluminum castings, the resilience and moderate hardness of steel shot make it an ideal cleaning material.
**Application Case**: A machinery manufacturing plant used steel sand to clean steel castings. After several cleanings, the surface of the castings had no pores and was smooth and flat. Subsequent processing was smoother and production efficiency was significantly improved.
#### 2. **Metal surface shot blasting**
In the field of metal surface treatment, steel grit and steel shot are used to remove rust, scale and other contaminants from metal surfaces. Through shot blasting, not only can the metal surface be effectively cleaned, but also the adhesion of the metal surface can be improved, providing a better foundation for subsequent processing such as coating and plating.
**Application Case**: An automobile manufacturer uses steel shot for surface treatment of body frames. After multiple shot blasting treatments, the surface of the car body shows uniform roughness, and the coating adhesion is greatly improved, which greatly improves the anti-rust effect and extends the service life of the vehicle.
#### 3. **Concrete surface strengthening**
The applications of steel grit and steel shot are not limited to metal surface cleaning, they are also used to strengthen concrete surfaces. Spreading steel sand or steel shot on the concrete surface and spraying it with high-pressure air or machine can effectively improve the wear resistance and compressive strength of the concrete surface. The resilience of steel shot can effectively improve surface strength, making concrete structures more durable.
**Application Case**: A large bridge construction project uses steel shot for surface strengthening during concrete pavement construction. After steel shot blasting treatment, the road surface not only greatly improves its wear resistance, but also resists the impact of heavy traffic on the bridge structure, ensuring the long-term stability of the project.
#### 4. **Stress relief of welded parts**
During the welding process, due to temperature changes and cooling processes, the welded parts often generate internal stress. By spraying steel sand or steel shot on the welded parts, the surface and internal stress can be eliminated, thereby reducing welding deformation and improving the mechanical properties of the welded parts. Steel grit and steel shots help distribute stress and prevent cracks and deformation through impact and compressive stress.
**Application Case**: A shipbuilding company uses steel shot for stress relief after the hull welding is completed. After treatment, the surface of the weldment is smooth, no cracks occur, and the overall structure of the hull is stronger.
#### 5. **Surface finishing of precision parts**
Steel shot can be used not only for rough machining, but also for surface finishing of precision parts. In industries such as aerospace and electronic components, the surface finish of precision parts is extremely demanding. During the polishing process, steel shot can remove small surface defects and improve the appearance and functionality of parts.
**Application Case**: An aerospace company uses steel shot to surface polish aircraft engine parts. After treatment, the surface of the parts is smooth and scratch-free, which enhances the corrosion resistance and durability of the parts.
#### Conclusion
Steel grit and steel shot are important industrial materials, and their application in surface treatment, cleaning and strengthening has penetrated into all walks of life. By rationally selecting the appropriate type and particle size of steel sand or steel shot, processing efficiency can be effectively improved, product quality can be improved, and the service life of the product can be extended. With the continuous advancement of technology, the application prospects of steel sand and steel shot in more industrial fields will also be broader.