Why to weld and repair the top sealing cover of dowty retarder

In the process of using the dowty retarder, it is necessary to repair the seal cover, but it will cause a large number of seal covers to be scrapped, so it is necessary to weld and repair the seal cover of the dowty retarder.

After working for a period of time, the dowty retarder needs to be overhauled due to wear and other reasons. When repairing the sliding cylinder, it needs to be repaired. When repairing the sliding oil cylinder, it is necessary to screw off the sealing cover of the sliding oil cylinder, and then install it again after the maintenance. In order to prevent the leakage caused by the loosening of the seal cover of the sliding oil cylinder in the normal use, there is a φ 4mm small hole on the upper end of the original seal cover at an angle of 45 ° with the vertical direction for positioning. When the repair is completed and reassembled, the original small hole is difficult to return to its original position, so it needs to be re drilled, and the redundant small hole will cause leakage, resulting in a large number of scrapped sealing covers. Therefore, it is necessary to weld and repair the top sealing cover of dowty retarder .