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Why do these grinding balls look bright and smooth

Update:08-07-2021
Summary:

Many surfaces of the grinding balls we see every day ar […]

Many surfaces of the grinding balls we see every day are bright, and even have the effect of a mirror surface, which is due to the mirror reflection.

When light travels to the surface of an object, it will reflect. Reflection is divided into specular reflection, diffuse reflection and target reflection.
1. Mirror reflection: If the surface of the object is smooth, when the parallel light shines on the smooth surface, the reflected light is also parallel, which is called mirror reflection.

2. Diffuse reflection: If the surface of the object is rough, the parallel light illuminates the rugged surface, Roll On Hollow Ball and the reflected light illuminates each target, which is called diffuse reflection.

3. Target reflection: The reflection between diffuse reflection and specular reflection is called target reflection, also known as non-Lambertian reflection, which is reflected in all directions with uneven intensity.

It can be seen from the above that the factor that determines whether there is light on the surface of the grinding ball is the flatness of the spherical surface; the smoother the spherical surface, the better the mirror effect; the rougher the spherical surface, the worse the mirror effect. There are many factors that affect the flatness of the spherical surface, and the focus is divided into: the internal structure of the raw material and the processing level of the spherical surface. Among them, the outside processing of the spherical surface is relatively simple, such as the newly sintered grinding ball, the spherical surface is matte, and the spherical surface may have a mirror effect after being polished. The internal structure of the raw material includes: pores, crystal grain size and liquid equivalent.