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How are Stainless Steel balls produced?

Update:11-08-2021
Summary:

  At present, the main industrial steel balls on t […]

 

At present, the main industrial steel balls on the market are: nylon balls, copper balls, carbon steel balls, ceramic balls, stainless steel balls, alloy balls, and steel balls for bearings.

The quality of the bearing mostly depends on the accuracy of its components (inner, outer ring, cage, steel balls), but there are many cases of poor bearing quality due to the quality of the steel balls in the components. Therefore, steel ball manufacturers are now paying more and more attention to steel With the improvement of ball quality, we look forward to manufacturing high-precision steel balls that are infinitely close to the real ball!

At present, steel balls are used more in daily life, and there will be very strict technical requirements in terms of production technology. I believe that many people have many problems with the production of steel balls
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1. Material:

Through the multi-dimensional inspection of the surface quality of raw materials, metallographic structure, decarburization layer, chemical composition, tensile strength, etc., the use of vacuum deoxidation treatment, non-metallic medium and other impurities, and high cleanliness materials are used.

2. Sphere forming (cold heading):

In the ball molding machine, the wire is cut into a certain length, and the ball is formed after compression by the female and male molds on the hemispherical ball seats on both sides. (Under normal temperature conditions, the wire is cut to a specific length, and plastically deformed by the cold heading machine to form a ball billet)

3. Polishing:

The forged steel ball is sandwiched between two hard casting discs, and pressure is applied to rotate it to remove burrs and surface bands, and at the same time increase the surface roughness of the steel ball to make it preliminary spherical.

4. Heat treatment:

The steel ball is carburized in the heat treatment furnace and then quenched and then tempered so that the ball has a certain carburized layer, hardness, toughness and crushing load. At present, some technologically advanced manufacturers use mesh belt heat treatment lines to effectively control the process parameters of quenching and tempering time and temperature through various instruments to ensure the stability and controllability of product quality.

5. Strengthen:

A processing method in which steel balls collide with each other through a strengthening machine to make the surface of the steel ball plastically strengthened to increase the compressive stress and surface hardness of the steel ball.

6. Hard grinding:

The surface quality and shape of the steel ball are further improved by grinding the iron plate and rotating the grinding wheel plate under a certain pressure.