How to ensure the accuracy of Hydraulic Cold Drawn Tube

- Oct 21, 2025-

1. Strictly control the quality of raw materials

Select raw materials with uniform texture and no impurities to ensure stable material properties and avoid affecting subsequent processing accuracy due to raw material defects. Conduct a comprehensive inspection of the raw materials to check for cracks, segregation and other problems to ensure that the chemical composition and mechanical properties of the materials meet the standards. The dimensional accuracy of the raw materials must be controlled within a reasonable range to provide a good foundation for subsequent processing.

2. Accurately debug processing equipment

Regularly maintain and calibrate the cold drawing equipment to ensure that all parts of the equipment are operating normally and reduce precision problems caused by equipment deviation. Adjust the clearance between the mold and the mandrel to ensure the dimensional fit and avoid excessive or insufficient clearance that affects the pipe forming accuracy. Check the equipment's guide device to ensure that the pipe is evenly stressed and operates smoothly during processing to reduce bending or deviation.

3. Optimize cold drawing process parameters​

According to the material and specifications of the pipe, formulate a reasonable cold drawing process plan and determine the appropriate drawing speed and deformation. Control the temperature changes during the drawing process to avoid changes in pipe performance and dimensional deviations due to excessively high or low temperatures. Rationally arrange the drawing passes and reduce the single deformation through multiple progressive processes to ensure the stability of the pipe dimensional accuracy.

4. Strengthening process monitoring

During the cold drawing process, the forming state of the pipe is observed in real time to promptly detect problems such as surface wrinkles and dimensional anomalies and adjust the process. Sampling and testing are carried out on each batch of products to measure key dimensional parameters and ensure that they meet the accuracy requirements before continuing production. Various data during the processing process are recorded to facilitate tracing the root cause of the problem and provide a basis for process optimization.

5. Improve finished product testing process

After the finished product is completed, it undergoes comprehensive dimensional testing, including key indicators such as diameter, wall thickness, and straightness, to ensure that the accuracy meets the standards. Professional testing tools are used to check the surface quality of the pipe to prevent surface defects from affecting the accuracy of use. Unqualified products are analyzed and processed, and the production process is continuously improved to continuously enhance the accuracy and stability of cold-drawn pipes.

If you are interested in learning more about St52 Cold Drawn Tubes, please contact Wuxi Hengtong Petroleum Machinery for more information. Our professional team is always ready to listen to your needs and provide you with tailored consultation and guidance.

 

 

You Might Also Like