Frequently Asked Questions about Oil Valves for Material Torsion Testing

The manufacturing of metal products is inseparable fromMaterial torsion test machineHowever, the poor quality problems caused by the finished product due to the testing machine inspection equipment are not uncommon. The following are the manufacturer's problems and solutions for the test oil valve:

1. The piston and piston sleeve in the oil supply valve are damaged or the spring becomes soft. In this way, the load that can be reached by each load remains unchanged at all, and the oil supply valve is noisy. When the load cannot rise again, the oil output of the oil supply valve return pipe is large. The piston and piston sleeve should be taken out and ground. If the damage is serious, the spring should be replaced.

2. The oil supply valve has low stiffness in the spring, or saves the needle cavity and has infarction. The first thing to do is to show: each load can only reach the inevitable load. When the load cannot rise again, the oil output of the return oil pipe is large. Cleaning method: Change the pressure-regulating spring with suitable stiffness or clean dirt.

3. The gap between the damping needle and the damping hole of the oil supply valve is too small. The first display is that each load can only reach the inevitable load. When the load cannot rise again, the oil output of the oil return pipe of the oil supply valve is large. Sweep method: Take out the damping needle and use a file to properly file a part along the axial direction of the damping needle.

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