Hydraulic valve block processing process flow

How much do we know about hydraulic valve blocks? It is actually a control element in the hydraulic system, which is used to control the pressure, flow and flow direction of the fluid in the hydraulic system, so as to meet the requirements of different actions of various performance components. Because it has the advantages of compact structure, good sealing performance, easy maintenance and easy technical security, it is widely used in all kinds of hydraulic transmission systems. So do we know what the hydraulic valve block processing process is? If you don't know, take a look at the following Wuxi Maytek Precision Machinery Co., LTD

The valve block is first to be planned, and then processed after the end, the processing process is roughly as follows:

1, pre-processing: Processing valve block data need to ensure the internal arrangement of fine, no sandwich, trachoma and other shortcomings, should be processed before the blank inspection. Cast iron blocks and larger steel blocks should be aged and pre-treated before processing.

2, blanking: generally leave at least 2mm processing allowance on each side.

3, milling shape: milling valve block 6 faces, each side to leave 0.2-0.4mm rough grinding.

4, rough grinding: rough grinding valve block 6 faces, leaving 0.05 ~ 0.08mm grinding amount on each side, to ensure that the parallelism of each corresponding surface is less than 0.03mm, and the perpendicularity of two adjacent surfaces is less than 0.05mm.

5, marking: conditional can be directly used in the drilling machine with the center drill end.

6, drilling: the surface roughness of each hole is Ra12.5.

7, fine grinding: grinding valve block 6 sides, each surface grinding to roughness Ra0.4um.

For the components that need to be adjusted, the convenience of operation and investigation should be considered, such as the adjustable components such as the relief valve and the speed regulating valve should be set in the orientation that the adjustment handle can be easily adjusted. Proportional valves, servo valves and other components and key components that need frequent maintenance should be located above or outside the valve block for easy disassembly and installation. In addition, the valve block structure shall be provided with a sufficient number of pressure measuring points for debugging the valve block. Valve blocks weighing more than 30kg should be provided with lifting screw holes. However, in the case of satisfactory use requirements, the volume of the valve block is very small.