What is the manufacturing process of high-pressure hose? below Shandong hose The factory editor gives a detailed introduction.

1. The calender presses the middle glue sheet, adds the release agent to roll it up and cuts it to the specified width according to the process requirements

2. The inner layer rubber, middle layer rubber and outer layer rubber are mixed with a mixer according to the formula; Extrude the inner oil pipe with an extruder and wrap it on the soft core or hard core coated with mold release agent (the pipe core can also be omitted for liquid nitrogen freezing method)

3. Wrap or braid the inner oil pipe containing the pipe core on the winding machine or braiding machine with copper plated steel wire or copper plated steel wire rope. At the same time, synchronously wind the middle layer of glue sheet between every two layers of copper plated steel wire or copper plated steel wire rope on the winding machine or braiding machine, and bind the beginning and end of the winding steel wire (some early winding machines need to pre stress the copper plated steel wire)

4. Wrap the outer layer of rubber on the extruder again, and then wrap the lead or cloth vulcanization protective layer

5. Vulcanization by autoclave or salt bath

6. Finally, remove the vulcanization protective layer, pull out the pipe core, buckle the pipe joint, and conduct sampling and pressure inspection.

Shandong hose The small editor of the factory summarized that there are many equipment, many kinds of raw materials and complex production processes for manufacturing high-pressure oil pipes. However, in recent years, the production process of hydraulic tubing with plastic or thermoplastic elastomer as the main raw material can be properly simplified, but the raw material price is high, and the rubber raw material is still the main raw material.