Hard grinding is one of the key processing technologies in steel ball production, which is mainly used to improve the dimensional accuracy of steel ball.

1. Process principle

Hard grinding is a precision grinding process in which the surface of the steel ball is deburred and the microscopic shape is corrected by the grinder under high pressure and high speed.

Main purpose:

Eliminate surface defects and microscopic irregularities.

Reduce ball diameter deviation and improve dimensional accuracy.

Principle: Steel ball in the hard grinding process through friction, the surface material is subjected to plastic deformation and micro removal, and finally achieve the ideal surface quality.

2. Process equipment

Hard grinding process equipment usually includes hard grinding machines, molds and auxiliary tools.

Main equipment:

Hard grinding machine: such as vertical or horizontal grinding machine, usually precision CNC equipment.

mould

Cooling lubrication system: To reduce heat accumulation and process deformation, provide coolant or abrasive fluid.

3. Process flow

The hard grinding process is roughly as follows:

Loading steel balls:

The steel ball is evenly placed in the working area of the hard grinding equipment to ensure the uniformity of processing.

Hard grinding:

The steel ball is hard ground to remove most burrs and surface defects, and the size is close to the final requirements.

Monitor the change of processing temperature and ball diameter, adjust the process parameters in time.

The ball diameter, roundness and surface roughness of the steel ball are tested to ensure that the quality requirements are met.

4. Process advantages

High precision: Hard grinding can significantly improve the size and surface accuracy of the steel ball, and the roundness deviation can be controlled within 0.001mm.

Enhanced performance: The surface hardening and finish are significantly improved, which improves the wear resistance and fatigue resistance of the steel ball.

Strong adaptability: suitable for a variety of materials of steel balls (such as stainless steel, bearing steel, carbon steel, etc.) finishing needs.

5. Process shortcomings

High processing cost:

The use of high precision equipment increases the cost of production.

The process is complex:

It is necessary to strictly control the temperature, pressure and processing time during processing, which increases the complexity of the process.

6.Summarize

As a key step in steel ball production, hard grinding plays an indispensable role in improving product quality. Although its cost and complexity are high, because it can significantly improve the accuracy of the steel ball, it is widely used in high-end bearings, precision machinery and aerospace and other fields.