This article mainly introduces:

Norway hydraulic cylinder,shearing machine cylinder manufacturer,shearing machine cylinder

(Norway shearing machine cylinder,produced by Hengyu Hydraulic Cylinder Factory）

shearing machine cylinder are widely used in Norway，because of long service life，smooth movement，high work efficiency.So our company has designed shearing machine cylinder for customers from Norway.

Introduction to shearing machine cylinder:

shearing machine cylinder is the most important part of construction machinery, the traditional processing method is: broaching shearing machine cylinder block - fine boring shearing machine cylinder block - grinding shearing machine cylinder block. The rolling method is: broaching shearing machine cylinder block - fine boring shearing machine cylinder block - rolling shearing machine cylinder block, the process is 3 parts, but the time is compared: grinding 1 meter of the shearing machine cylinder block is about 1-2 days, rolling 1 meter of the shearing machine cylinder block is about 10-30 minutes. Input comparison: grinding machine or quilting machine (tens of thousands - millions), rolling knife (ten thousand - tens of thousands). After rolling, the surface roughness of the hole decreases from RA3.2-6.3 μm before rolling to Ra0.4 ~ 0.8μm, the surface hardness of the hole increases by about 30%, and the fatigue strength of the inner surface of the shearing machine cylinder increases by 25%. If the shearing machine cylinder life is only considered, it is increased by 2 to 3 times, and the boring and rolling process is 3 times more efficient than the grinding process In particular, if you want to make high-quality shearing machine cylinders, you must take the rolling production process. After the shearing machine cylinder is rolled, there is no sharp tiny edge on the surface, and long-term motion friction will not damage the seal ring or seal, which is particularly important in the hydraulic industry.

If the seal of the shearing machine cylinder is abnormal wear, you can check whether the speed control valve is improperly adjusted, resulting in too high back pressure and improper installation of the seal or hydraulic oil contamination. The second is whether there is a foreign body entering the assembly and the quality of the sealing material is not good. The result is that the action is slow and weak, and in serious cases, it will cause damage to the piston and shearing machine cylinder, and the phenomenon of "pulling the shearing machine cylinder" appears. The treatment method is to adjust the speed control valve, and the necessary operation and improvement should be done according to the installation instructions.

After chrome plating of the piston rod of the shearing machine cylinder, the surface flatness is not fully treated: After chrome plating of the piston rod surface, the method of post-plating polishing should be changed to post-plating polishing. Although it is necessary to increase the thickness of the coating before grinding (generally increased by about 0.02 in the diameter direction), it can remove chrome plating defects well, and test the binding force of the coating. In addition, due to the micro-roughness of the grinding surface, the trough can store lubricating oil, which can improve the wear resistance and extend the service life.

Do not regularly check the damage of the chrome layer of the shearing machine cylinder: completely extend the shearing machine cylinder and carefully check whether there is any surface damage such as injury, strain, welding slag, such as the surface damage position, in the shearing machine cylinder block < 20cm, and the damage depth < 5mm, should be repaired in time to prevent long-term damage to the shearing machine cylinder seal. Welding slag is strictly prohibited on the surface of the shearing machine cylinder.

Answers to some questions about shearing machine cylinder:

Are hydraulic cylinders divided into oil cylinders and water cylinders? What's the difference between the two types?
There are oil cylinders and water cylinders. The two cylinders are used in different environments. Oil cylinders are generally used in places where there is less demand for media, which is our most common hydraulic cylinders. Water cylinders are mainly used for large tonnage presses. Because the equipment is too large, the use of hydraulic oil will cause a relatively large waste. However, water is not pure water, there are oil-in-water emulsion and water-in-oil emulsion. Water has another benefit: it's flame retardant. It is especially suitable for some flammable and explosive occasions. Or with water glycol. The use of pure water is very little, mainly because the seal is not good and easy to rust.

Is the hydraulic cylinder leaking because there is no pressure?
HC hydraulic cylinder common leakage reasons, first: most of the reasons are because the seal surface wear or aging leads to poor sealing, so there is no pressure to operate, as long as the piston seal can be replaced. Second: It may also be the piston rod strain, repair the piston rod is good. If it is because the piston strength is not enough and the playing time is long, it is necessary to replace the piston.