High pressure solenoid hydraulic manifold block valves block

The design of hydraulic valve block mostly belongs to non-standard design, which needs targeted design according to different working conditions and use requirements. The design of valve block is roughly divided into the following steps: material selection, processing and heat treatment, deburring and cleaning, surface anti rust treatment and test.

1. Material selection: different materials determine different pressure levels. First of all, reasonable material selection should be made according to the use pressure. Generally speaking, the following principles should be followed: when the working pressure P < 6.3MPa, cast iron HT20-40 can be used for hydraulic valve block. Iron castings can be used for mass casting to reduce working hours and improve efficiency, especially for standardized valve blocks. When 6.3MPa ≤ P < 21MPa, the hydraulic valve block can be made of aluminum alloy forging, 20 forged steel or Q235; Low carbon steel has good welding performance, especially suitable for welding with non-standard hard pipe (many valve blocks need to be welded with hard pipe in use). When p ≥ 21MPa, the hydraulic valve block can be made of 35 forged steel. After forging, the HB200-240 is directly machined or machined after quenching and tempering. Usually, high pressure valve blocks are often subjected to flaw detection, machining and heat treatment cycles.