Pickling is mainly suitable for metal pipes
such as steel pipes and cast iron pipes. It can effectively remove impurities
and rust on the inner wall of the pipe, making its surface smoother and more
delicate, and improving the efficiency of the pipeline to transmit liquid. The hydraulic
pipes are pipes used to transport liquid or convert liquid into mechanical
energy. Hydraulic pipe is one of the seamless
steel pipe. Hydraulic pipes must be pickled before use, because pickling
can effectively remove impurities and rust on the inner wall of the pipe,
ensuring the cleanliness and service life of the pipe.
The process of pickling hydraulic pipes
During the production process of hydraulic
pipes, due to material reasons or friction during processing, there will be
some impurities such as rust, steel slag, and scrap iron on the surface of the
pipe. These impurities will have a certain impact on the service life and use
effect of the pipe, so the pipe needs to be pickled.
The process of pickling hydraulic pipes
includes the following steps:
1. Cleaning: First clean the surface of the
hydraulic pipe with clean water or cleaning agent to remove most of the dust
and impurities.
2. Pickling: In a specific acidic
environment, soak the hydraulic pipe for a period of time so that the rust,
steel slag, scrap iron and other impurities on the surface of the pipe are
dissolved and removed by acid.
3. Cleaning: After pickling, the hydraulic
pipe needs to be thoroughly cleaned with clean water, and alkali solution is
used to neutralize the residual acidity to avoid affecting the service life of
the pipe.
The role of hydraulic pipe pickling
The main role of hydraulic pipe pickling is
to remove impurities on the surface of the pipe, improve the smoothness and
roughness of the pipe surface, reduce the resistance inside the pipe, and thus
improve the use effect and service life of the hydraulic pipe.
In addition, the hydraulic pipe treated
with pickling also has the following characteristics in the later use process:
1. The surface of the pipe is smooth, and
it is not easy to adhere to dirt and impurities, which is convenient for
cleaning and maintenance.
2. The inner wall of the pipe is smooth and
the friction coefficient is small, which can effectively reduce the pressure
loss and energy consumption of the pipe.
3. The flatness and straightness of the
pipe surface are increased, which can ensure the smooth and stable flow of
liquid or gas, and is conducive to industrial automation control.
The necessity of pickling hydraulic
pipes
1. Ensure the normal operation of the
hydraulic system: The low finish of the inner wall of the pipe will have a
great impact on the operation of the hydraulic system. For example, sediments
will increase the friction resistance of the pipe, reduce the transmission
flow, and even cause the pipe to be blocked; while oxides will damage the
structure of the pipe and cause leakage.
2. Extend the service life of the hydraulic
system: The inner wall of the pipe treated with pickling is smoother, which can
prevent scale, corrosion and rust, thereby extending the service life of the
pipe.
The impact of not pickling the pipe
1. Increased resistance: Impurities and
rust on the inner wall of the pipe without pickling are difficult to remove,
which will increase the resistance of the pipe and reduce the efficiency of
transmitting fluid.
2. Leakage: The unpickled part of the inner
wall of the pipe is prone to oxides and rust, which may cause the pipe to age
and crack, thus causing leakage.
Conclusion
Hydraulic pipes must be pickled before use.
Only by thoroughly cleaning the impurities and rust on the inner wall of the
pipe can the finish and smoothness of the pipe be guaranteed, and the
efficiency of transmission flow and fluid can be improved, thereby ensuring the
normal operation of the hydraulic system and extending its service life.