How to solve it Four column hydraulic press Can't the pressure go up? What is the reason why the pressure of four column hydraulic press does not go up? Today, let's take you to know:
1. 1000 tons hot forging four column hydraulic press belongs to the problem of hydraulic pump, so the solution is to repair or replace the hydraulic pump.
2. When the valve seat is damaged and the pilot valve is worn or seriously strained, it should be replaced or repaired by grinding to make it close.
3. Properly increase the diameter of damping hole of main valve core. The diameter of damping hole of domestic relief valve is 0, 8-15 mm, which can be changed to 1, 5-1, 8 mm. This allows the lag time to be significantly reduced and the pressure can rise rapidly. But it can't be changed too much.
4. Dismantle and wash the main valve and pilot valve, and poke the damping hole of the main valve core with 0.8-10 m steel wire, or blow through with compressed air, which can eliminate the fault of slow pressure rise in most cases.
5. Reduce the lifting height of the main valve core. For example, the upper end of the main valve core of y1-10b valve is covered with a gasket with thickness of 3-4 and 5mm. The lag time can be reduced from 2s to 0 or 4S. In addition, it is better to select two concentric relief valves in this respect.
Four column hydraulic press
6. Remove the burr on the sharp edge of groove of main valve core and valve body with nylon brush to ensure that the fit clearance between main valve core and valve hole can move flexibly within the range of 0, 008-0 and 015 mm. For relief valve with large diameter, the matching clearance can be appropriately larger.
7. The plate valve should not be over tightened according to the screw and the pipe joint of the pipe type valve, so as to prevent the deformation of the valve hole.
8. The missing, wrong and broken springs of the 1000 ton hot forging four column hydraulic press should be replaced or replaced.
9. When remote control is not required, the remote control port should be blocked or plugged with a rosette.
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