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First of all, we must understand the manufacturing process of quenched and tempered piston rod. It is formed by rolling. A cold hardening layer is formed on the surface of the rolling surface, which helps to reduce the elastic and plastic deformation of the contact surface of the grinding pair, improve the wear resistance of the surface of the cylinder rod, and avoid the burns caused by grinding.

In order to avoid the above phenomena, the piston rod must have sufficient strength and stiffness, and light weight. However,

The electroplating treatment of piston rod is not simple, but also requires a higher technical content, it is necessary to remind everyone about this.

Firstly, the small machining allowance is used to shorten the processing time and reduce the cost of parts manufacturing. Secondly, sufficient machining allowance should be ensured,

Auscultation method of long shaft pump deep well pump with the normal operation of the long shaft, accompanied by sound has always been a certain rhythm and rhythm.