Cause Analysis of Damage to Hydraulic Cylinder of Single Column Hydraulic Press

Cause Analysis of Damage to Hydraulic Cylinder of Single Column Hydraulic Press

The working cylinder of the single-column hydraulic press has heavy load and frequent work, which often causes premature damage due to improper design, manufacture or use. Therefore, it is very necessary for us to understand its damage and reasons.

1. Damaged parts and characteristics of hydraulic cylinders

Most of the damaged parts of the hydraulic cylinder of the single-column hydraulic press are in the arc part connecting the flange and the cylinder wall, followed by the arc part where the cylinder wall transitions to the bottom of the cylinder, a few cracks occur in the cylinder wall, and some are damaged due to serious cavitation. of.

(1) The cylinder wall. Generally, cracks first appear on the inner wall and gradually develop outward. The lines develop outward, and the cracks are mostly distributed longitudinally, or at an angle of 40 degrees to the busbar of the cylinder wall.

(2) The flange part of the cylinder. First of all, row lines appear on the outer surface of the cylinder flange at the excessive arc, and gradually expand to the circumferential direction and the inner wall, and finally crack, or the crack expands to the nail hole, causing the flange to partially fall off. In some serious cases, it may even follow the transition circle. The flange at the arc is cracked and dropped off.

(3) At the bottom of the cylinder, first, circumferential cracks begin to appear on the inner surface of the transition arc at the bottom of the cylinder, and gradually expand to the outer wall and even crack.

(4) Cavitation, the hydraulic cylinder of the hydraulic press is also damaged by honeycomb pitting caused by cavitation, especially in the inner wall of the entry hole, which is prone to cavitation!

2. Analysis of the damage causes of the hydraulic cylinder of the single-column hydraulic press

There are many factors that affect the working life of hydraulic cylinders. It must be analyzed in combination with the specific situation, but it can be summed up in the following aspects.

(1) Design reasons. The structural size design is unreasonable, such as the flange height is too small or the flange outer diameter is too large, so that the composite should be too high and damaged.

(2) Reasons for processing and manufacturing.

(3) Reasons for installation and use. This article is from the official website of the manufacturer WORLD Press Machine www.pressmachine-world.com, please indicate the source for reprinting!

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