Grinding of the dynamic and static ring faces of mechanical seals

Grinding of moving ring and static ring end face of mechanical seal

22/09/27 11:12:09

As we all know, there are two types of mechanical seals, the dynamic ring and the static ring. During use, in order to ensure the efficiency of the seal, it is necessary to perform grinding operations on the end faces of the dynamic and static rings. Many users do not understand the specific operation requirements and steps, so A detailed introduction is given below.

1. After the moving ring is disassembled, after grinding, rough grinding is carried out first, then fine grinding is carried out, and polishing can be carried out if conditions permit.

2. For coarse grinding, use abrasives with a particle size of 80 to 160#, and grind away the processing marks first. Then it can be finely ground with abrasives above 160# to make the brightness meet the design requirements. Carbide or ceramic moving rings need to be polished with a polishing machine after fine grinding. The strength of the polishing machine can choose M28 ~ M5 boron carbide. After polishing, it reaches the mirror surface. The ceramic ring can be finely ground with M5 agate powder and then polished with chromium oxide.

3. The graphite-filled PTFE static ring, because the material is soft, can be lapped with kerosene, gasoline or water without adding abrasives. It can also be self-developed during the running-in process, so the brightness requirement is not too high.

4. Grinding method, if there is a grinder, you can grind it on the grinder, if you don’t have a grinder, you can use the 8-shaped manual grinding method on the flat glass.

The above is about the grinding operation steps and standards of the end faces of the moving ring and the static ring of the mechanical seal. According to the introduction, the accuracy of the grinding operation can be ensured and help for later use.