Port | NINGBO |
Packaging | customized |
Lead Time | 60 |
After the previous article talking about the manufacturing
process
of hydraulic valve block,
we received many customers' message on our website. The new
customers have not purchased our AAK hydraulic valve block yet,
so it is understandable to have worries. In order to further
clarify the quality advantages of AAK
hydraulic valve block,
I will talk about some production precautions of AAK in the
production process of hydraulic valve block, as
follows:
1. The surface roughness of the valve and flange installed on the
hydraulic valve block shall reach Ra0.4, and the surface
roughness of the sealing surface of the end pipe joint shall
reach Ra3.2. In addition, the tolerance of perpendicularity
between the screw hole of pipe joint and its outer joint surface
shall be at least Grade 8.
2. In the design of hydraulic valve block, the oil circuit should
be as simple as possible, and the deep hole, inclined hole and
process hole should be reduced as far as possible. The hole
diameter in the valve block should match with the flow rate,
especially the through hole must have enough flow area, the
direction and position of the oil inlet and outlet should match
with the general layout of the system and the connection form of
the pipeline, and the process of installation operation should be
considered. The components with vertical or horizontal
installation requirements must meet the requirements after
installation.
3. All screw holes on the valve block should have machining
accuracy requirements. Generally, 7h is selected. The machining
accuracy of the mounting holes of threaded cartridge valves meets
the requirements of product samples. The roughness of the
mounting holes of cartridge valves is Ra0.8. In addition, there
are also dimensional tolerance and geometric tolerance
requirements. The surface roughness of 0-ring groove is Ra3.2,
and the surface roughness of general runner is
Ra12.5.
4. The high pressure valve block should be made of 35 forged
steel, and the general valve block should be made of A3 steel or
ductile iron. When cutting the valve block material from the
plate by gas cutting, enough machining allowance should be
reserved, and it is better to forge the blank of the valve block
before machining. The material for processing valve block shall
be compact in internal structure, free from interlayer, trachoma
and other defects, and the blank shall be detected if necessary.
Cast iron blocks and larger steel blocks should be aged and
pretreated before processing.
The important component of the hydraulic valve is the hydraulic
valve block, which plays an important role in controlling the
direction, pressure and flow of the liquid flow in the hydraulic
valve. AAK has its own proprietary technology, quality control
system, never careless. If you also need to purchase hydraulic
valve block, please contact us via [email protected].
Room 904, 9F Bona Business Building, No. 456 Taikang Middle Road, Yinzhou, Ningbo, China