Re heat the steel grit until uniform, and then quench it. Quenched steel grit is dried in an oven and reheated to achieve the appropriate hardness. Tempered steel grit is screened through mechanical screens used in steel grit equipment to meet SEA requirements. Products with different particle sizes and hardness are used for different processes, such as rust removal, surface hardening, etc. Please make a small amount of effort when adding new steel grit.
Steel grit is currently mainly used in metal abrasives for sand cleaning of large and medium-sized castings, removal of oxide scales on forgings and heat-treated parts, rust removal and surface strengthening of steel plates, sections and steel components. Steel grit is made by crushing high carbon cast steel pellets into sand particles, and then tempering them into three different hardness levels (gh, GL, GP) to meet different needs. The processed Shandong steel sand has been selected into 10 grades that meet SAE standards to meet the needs of sandblasting. Products of different sizes and hardness are used for different occasions, such as cylindrical carving, granite cutting, etc. The raw materials for Shandong steel sand are high carbon steel or alloy steel scrap.
The size, shape, and orientation of steel grit have a significant impact on abrasive wear. They affect the load and stress from elastic contact to plastic contact, and cause changes in the critical fracture indentation size and groove size.
On the other hand, if the load and hardness remain constant, the contact area is also constant, depending on the size and shape of the abrasive. When the vertex angles of pyramids, cones, and spheres decrease, the d/A value increases. That... the 4/4 value of a sphere is usually smaller than that of a pyramid or cone, so the wear rate of sharp abrasive particles is higher than that of circular blunt abrasive particles, especially because the indentation depth f of a cone is larger, which can easily exceed t (critical indentation depth), leading to the appearance and propagation of cracks. Steel grit is widely used due to its convenient use, high work efficiency, and long service life. The main function of Shandong steel sand is to help remove rust and clean metal surfaces. The main reason why steel grit can produce this effect is that the surface of the steel grit is not smooth, but very rough. Only by achieving roughness can it have good results. In addition, we also need to take a look at its overall quality.