No pressure in the press

2025,04,01

1. Appropriately increase the diameter of the damping hole of the main valve core. Under normal circumstances, the diameter of the damping hole of the domestic standard overflow valve is 0.8-1.5mm, which can be changed to 1.5-1.8mm. This does not have much effect on the static characteristics, but the lag time can be greatly reduced and the pressure can rise quickly.

2. Disassemble and clean the main valve and pilot valve, and use a 0.8-1.0m steel wire to pass the damping hole of the main valve core, or blow it through with compressed air, which can eliminate the fault of slow pressure rise in most cases.

3. Reduce the lifting height of the main valve core. For example, a 3-4.5mm thick gasket is placed on the upper end of the main valve core of the y1-10b valve. The lag time can be reduced from 2s to about 0.4s. In addition, choosing a two-section concentric overflow valve is better in this regard.

4. Use a nylon brush to remove burrs on the sharp edges of the main valve core and the groove of the valve body, and ensure that the clearance between the main valve core and the valve hole can move flexibly within the range of 0.008-0.015mm. For overflow valves with large diameters, the clearance can be appropriately larger.

5. The screws of the plate valve and the pipe joints of the tubular valve should not be tightened too much to prevent the deformation of the valve hole. If the valve seat is damaged, it will cause the cone valve to wear and seriously strain. It should be replaced or repaired by grinding to make it fit tightly. If it is a hydraulic pump problem, the hydraulic pump should be repaired or replaced.

6. Missing, wrongly installed and broken springs should be reinstalled or replaced; when remote control pressure regulation is not required, the remote control port should be blocked or plugged with a plug.

Dongguan Shengshi Weiye Machinery Technology Co.The main equipment produced are: Liquid Die Forging Machine, low-pressure Casting Machine, Gravity Casting Machine, cold forging machine, hot forging machine, etc

Author:

Ms. Hu

E-mail:

dgliheng168@163.com

Phone/WhatsApp:

+86 13509684273