Test the hydraulic cylinder of the four-column hydraulic press

The structure of the four-column hydraulic press we use is very simple and convenient to operate, the failure rate is also very low, its noise is also low, and the maintenance cost is low. How many methods are there for testing the hydraulic cylinder? Here are several methods of testing hydraulic cylinders for four-column hydraulic presses.

First, the hydraulic cylinder no load test, the maximum stroke of the piston rod of the four-column hydraulic press is the reciprocating uniform movement, the piston of the O shape, Y shape or U shape fabric seal ring is selected, the resistance is <0.3Ma; Piston with V-shaped fabric seal ring, resistance <0.5MP; z Choose piston ring, resistance <0.5MP.

Second, the test of leakage in the hydraulic cylinder, the experimental hydraulic cylinder under additional pressure, with another high-pressure hydraulic cylinder beyond the experimental hydraulic cylinder extra to do the driving force experiment, the hydraulic cylinder piston rod within 10min allowed to accompany the interval shall not exceed 0.5mm.

The buffering experiment of the hydraulic press, the hydraulic cylinder under additional pressure, the piston rod full stroke rapidly reciprocating, at the end of the two ends there is an obvious buffering throttling effect, no impact on the front and back end covers, and the reversing start is stable.

Fourth, the piston rod reciprocating speed difference test, hydraulic cylinder under additional pressure, hydraulic piston rod plus the maximum operating load, the live base rod slow full stroke reciprocating operation, reciprocating speed difference (double piston rod hydraulic cylinder) shall not be greater than 10%.

5. Piston rod no load test. When the hydraulic cylinder is loaded, the piston is running at a constant speed on the full stroke, and the movement should be smooth and flexible, without blocking the heavy and heavy phenomenon, and the commutation is smooth and agile.

Six, the four-column hydraulic press piston rod under additional pressure test, hydraulic cylinder under additional pressure, the piston rod plus the maximum operating load, the piston xuan in repeated reciprocating operation stable movement, block or crawling phenomenon, the related parts have no lasting segment shape and abnormal phenomenon.