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WZA Bearing Production: 

With international advanced technology and sufficient equipment, WZA strictly controls the quality of every bearing from the first step drawing design to the last step products delivery, accompany with 100% test right to ensure every bearing perfect, concise and accurate.

Drawing

First of all,optimization of drawing design is based on customer’s requirements, bearing application fields and bearing working condition.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Material

WZA adopts high-quality Chrome steel with high purity and conducts rigorous tests to verify the quality.

Forging

USE dedicated forging equipment, in which the steel bar is heated through intermediate frequency inductance and the thermometer is used to measure temperatures of different parts of the bar. After heating and hydraulic hot shearing, the products are forged to meet requirements of rolling. After that, in order to ensure to products to achieve excellent tolerance performance in size and geometric shape, rolling with executed through CNC ring rolling machine.

Heat treatment annealing 

Spheroid zing annealing is adopted for all WZA products, which is characterized by product temperature uniformity and good internal structure, laying a good foundation for the next process of turning and hardening.

Turning 

CNC equipment is adopted to ensure the intricate refinement and rigorous test.

Heat treatment hardening and tempering 

Adopt advanced Bainite heat treatment

Rough grinding 

Lay a good foundation for fine grinding,and strict control of precision in di mension and geometry.

Stable tempering

Eliminate stress and stabilize dimensional and geometric accuracy.

Ground finish Inner ring 

CNC is used for fine grinding to ensure that the product can reach up to P6 level in geometric precision and accuracy.

Ground finish Outer ring 

CNC is used for fine grinding to ensure that the product can reach up to P6 level in geometric precision and accuracy.

Fault detection 

100% detection is executed for cracks flaw in components of bearings.

Demagnetization

Eliminate the residual magnetism of the bearing parts to remove the possible hazards.

Online monitoring and testing

Make continuous improvement in accordance with quality system requirements.