How to check the equality and roughness of end face of KCB g

How to check the parallelism, perpendicularity and surface roughness of the front and rear end faces of the pump?

Answer: 1) the flatness of the end face is 0.0006-0.0009mm for the liquid medium and 0.0001-0.0004mm for the gas medium;

2) Balance tolerance: the parallelism deviation of the sealing end facing the sealing ring contact surface is generally less than or equal to 0.04mm.

The parallelism deviation of the two ends of the inlaid ring (ceramic ring and carbide ring) should be less than or equal to 0.03mm;

3) perpendicularity tolerance;

The vertical deviation of the center line of the outer diameter at the installation of the sealing ring should be less than or equal to 0.03mm in full diameter;

4) Surface roughness:

Seal face hard material (get) using the method of removing material dark glossy surface (grinding), soft materials (get) using the method of removing material invisible processing traces, the distinguishing processing direction (grinding, fine cars), contact with the auxiliary seal ring for invisible (get) using the method of removing material processing, the distinguishing processing direction (grinding, fine cars),

The rest were obtained by means of material removal. Small marks were obtained by means of knife wringing and finishing.

Author: Botou oil pump