Port | NINGBO |
Packaging | customized |
Lead Time | 60 |
AAK
hydraulic valve block is
manufactured strictly in accordance with AAK's
own 5 processing procedures to ensure at least 7H screw
hole machining accuracy requirements; the roughness of mounting
hole should be at least Ra0.8; the geometric tolerance is
0.005-0.01MM at most; the surface roughness of 0-ring groove is
at least Ra3.2, and the surface roughness of flow channel is at
least Ra12.5.
The importance of hydraulic valve block in hydraulic system has
been recognized by more and more people, and its application
scope is more and more extensive. The use of hydraulic valve
block can not only simplify the design and installation of
hydraulic system, but also facilitate the integration and
standardization of hydraulic system, reduce the manufacturing
cost and improve the accuracy and reliability.
However, with the increase of complexity of hydraulic system and
difficulty of the design of hydraulic valve block, it also causes
a series of problems, such as the raise of complexity of
manufacturing process, the increase of processing cost and so on.
Today, we will learn about the manufacturing process of AAK
hydraulic valve block through the following
introduction:
1) Pretreatment.
The material used for valve block progressing should be compact
in internal structure, free from interlayer, trachoma and other
defects. If necessary, the roughcast should be detected for
defects. Cast iron blocks and larger steel blocks should go
through aging treatment and pretreatment before
processing.
2) Machining.
After rough machining such as milling and planning the valve
block roughcast,
bench workers use scriber to mark lines,
the allowance for final fine grinding should be
reserved.
The surface roughness of valve block must meet the design
requirements, especially the installation surface of hydraulic
valve, flange and pipe joint, which should be free of marking
marks and other defects, otherwise leakage will be
caused.
3) Deburring.
After the machining of valve block, it is necessary to chamfering
and deburring. All flow channels in the valve block, especially
the intersection of intersecting flow channels, must be
thoroughly deburred, which is closely related to the reliability
of the whole hydraulic system, hence must not be
ignored.
4) Cleaning.
The valve block must be thoroughly cleaned before assembly, and
special cleaning equipment should be set. The cleaning fluid
should be antirust cleaning fluid, kerosene or engine oil is also
OK. When flushing, it is better to have a certain pressure. All
flow channels, especially blind holes, must be cleaned without
any iron filings, dirt and debris. After cleaning, the valve
block should be assembled immediately, otherwise it should be
coated with anti rust oil. Besides, the oil port should be
covered to prevent corrosion and secondary
pollution.
5) Assembly.
Before assembling the valve block, check again whether the
connection of the orifice is consistent with the schematic
diagram, check all the components and parts to be assembled, and
ensure that the assembled components, seals and other parts are
qualified products. The screw plug on the valve block should be
sealed with anaerobic glue. Before using the anaerobic glue, the
oil dirt on the joint surface must be removed. After gluing, the
screw plug must be tightened. Oil can only be filled after 24
hours.
All screw holes on AAK hydraulic valve block should have
machining accuracy requirements, generally 7H, or customized
according to customers. The machining accuracy of screw cartridge
valve mounting holes should meet the requirements of product
samples, and the roughness of cartridge valve mounting holes 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 surface roughness of general runner is
Ra12.5.
Those are detailed manufacturing processes of AAK hydraulic valve
block. Why are you hesitating? Come to order and have a
try!
Room 904, 9F Bona Business Building, No. 456 Taikang Middle Road, Yinzhou, Ningbo, China