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[Chemical Knowledge]：Manufacturing method and process of PE pipe

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The manufacturing method
of PE pipe
1. Introduction

Polyethylene (PE) pipe is widely used in chemical production, transmission water pipes, gas pipelines and other fields because of its excellent properties, such as corrosion resistance, low temperature resistance, high strength, light weight, etc. This article will introduce the manufacturing method of PE pipe in detail.

2. material preparation

The main raw material for the manufacture of PE pipe is polyethylene resin, and it is usually necessary to add some additives, such as antioxidants, ultraviolet absorbers, color agents, etc. The selection and ratio of these raw materials should be determined according to product standards and production processes.

3. mixing

add polyethylene resin and additives to the mixer in proportion, and mix thoroughly to ensure the uniform distribution of raw materials.

4. extrusion molding

the mixed raw materials are plasticized and molded by an extruder. The extruder is composed of a screw, a barrel, a mold and other parts. The raw materials are subjected to high temperature and high pressure in the extruder to form a uniform melt, and then extruded through the mold.

5. cooling and setting

the pipe just extruded from the die has a high temperature, and it needs to be rapidly cooled by a cooling device to set and maintain the shape and size of the pipe.

6. traction cutting

After cooling and shaping the pipe is led out by the traction equipment, and cut according to a certain length to form a certain length of the finished pipe.

7. quality inspection
PE pipes made of
need quality inspection, including appearance inspection, size measurement, pressure test, etc., to ensure that the products comply with relevant standards and regulations.

8. packaging warehousing

qualified PE pipe packaging, and then warehousing waiting for shipment.

The above is the basic manufacturing method of PE pipe. The specific process parameters and operation details need to be adjusted and optimized according to the actual production situation. At the same time, in order to ensure product quality and production efficiency, the following points need to be paid attention to:

1. Strictly control the quality of raw materials to ensure the purity and uniformity of raw materials;
2. Regularly maintain and overhaul production equipment to ensure the normal operation of equipment;
3. Strengthen the quality monitoring in the production process, find and solve problems in time;
4. Do a good job in cleaning and sanitation of the production environment, avoid contamination by dust and impurities.

In short, the manufacture of PE pipes requires strict control of all process links to ensure product quality and performance.

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