Hydraulic Tube Pressing Method

The basic principle of hydraulic tubes pressing

Hydraulic tube pressing is a processing method that produces metal cold flow quenching between the hydraulic tube and the joint. The basic principle of hydraulic tube pressing is that under the extrusion force of the pressing head, the metal at the end of the hydraulic tube undergoes plastic deformation, fills the joint groove, and forms a mechanical lock. During the cold extrusion process, the metal structure undergoes a quenching effect at the joint, which not only improves the interface strength but also ensures good sealing. Hydraulic tubes usually use the seamless pipe as the base material. The material has good toughness and high tensile strength. Therefore, they need to be pressed to ensure their safe and reliable pressure resistance.

Benefits of hydraulic tube pressing

1. Improve pressure resistance

Ensure that the hydraulic tube does not leak or break under high pressure.

2. Enhance connection reliability

Form a uniform and dense connection between the pipe and the joint to improve the safety of the overall system.

3. Extend service life

Reasonable pipe pressing can reduce early wear or damage caused by installation problems.

Tools for hydraulic tube pressing

Hydraulic tube pressing requires the use of pressing tools. The specifications of the pressing tools are determined by the outer diameter and thickness of the pipe. The more commonly used tools are:

1. Hydraulic tube pressing machine

Commonly used for pressing large-diameter (≥1″) hydraulic tubes. It is easy to operate and efficient. Suitable for large-scale processing on industrial production lines and occasions with high requirements for pressing precision.

2. Manual crimper

Commonly used for pressing small-diameter (≤1″) hydraulic tubes. The price is relatively economical, but it requires high operating skills and patience. Suitable for on-site maintenance or small-batch production, as well as occasions with low equipment investment requirements.

Operation steps for hydraulic tube pressing

1. Select a pressing head of appropriate size, loosen the pressing port, insert the pressing port into the center hole of the pressing head, and tighten it with a screw.

2. Align the pressing port with the end of the hydraulic tube, pinch it tightly at the appropriate position with your hand, and gradually insert the hydraulic tube into the center hole of the pressing head.

3. After inserting the hydraulic tube to a certain depth, quickly clamp the pipe pressing head, start the pipe pressing machine or rotate the manual pipe pressing device clockwise to perform the pipe pressing operation.

4. When pressing the pipe, pay attention to keeping the straight line and the right angle position of the pressing port to avoid sliding. The lower end of the pressing port falls into the slot to complete the pipe pressing operation.

Precautions for hydraulic tube pressing

1. When pressing the pipe, lubricant should be properly processed to avoid excessive friction causing premature wear of the hydraulic tube

2. The pipe pressing head and the end of the hydraulic tube must be aligned to avoid deviation during sliding.

3. The pipe pressing depth should be determined by careful measurement. Too deep or too shallow may cause the pressure port to break or the hydraulic tube to melt.

FAQ

Q: What should I do if the hydraulic tube is damaged during the hydraulic tube pressing?

A: During the pipe pressing process, the technical specifications should be strictly followed to ensure that the pipe pressing head and the end of the hydraulic tube are aligned. If damage has occurred, it is recommended to replace the hydraulic tube before pressing the pipe.

Q: How to judge whether the hydraulic tube has been tightened?

A: You can observe the contact surface between the hydraulic tube head and the end of the hydraulic tube. If the contact surface is uniform and no bubbles are generated, it means that it has been pressed tightly and can be used normally.

Summary

In short, in practical applications, hydraulic tube pressing technology is used in many fields. Its sealing and pressure resistance are crucial in the matching use with valves and other pipe fittings. Hydraulic tube pressing needs to be combined with the correct process and professional tools to ensure the installation quality and long-term use benefits of hydraulic tubes, and provide strong support for the efficiency improvement and safety of hydraulic systems.

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