1. Quality standards
The quality standards of stainless steel balls mainly involve the following aspects:
1) Chemical composition: The chemical composition of stainless steel balls should meet relevant national standards, the main components of which are chromium, nickel and molybdenum and other elements, which can ensure the corrosion resistance and wear resistance of stainless steel balls.
2) Mechanical properties: stainless steel balls need to undergo a series of processing and treatment in the production process, including heat treatment, cold working and welding, etc., which will have an impact on the mechanical properties of the ball. Therefore, the mechanical properties such as hardness, tensile strength, impact toughness and other mechanical properties of the ball are also an important part of the quality standard.
3) Surface quality: The surface quality of stainless steel balls is an important factor that directly affects its service life and effect. Before leaving the factory, it is necessary to test the surface roughness, flatness, finish and roundness of the sphere, and meet the relevant standard requirements.
4) Dimensional accuracy: stainless steel balls need to be used with other parts in many occasions, so dimensional accuracy has also become one of the important indicators of quality standards. Before leaving the factory, it is necessary to strictly inspect the dimensional parameters such as diameter, roundness, surface parallelism and other dimensional parameters of the ball, and meet the requirements of relevant standards.