Fixed-length production heating technology of composite pipeline

Abstract

The invention relates to a fixed-length production heating technology of a composite pipeline. According to the technology, a metal pipe die is provided; when the outer surface of the metal pipe die is coiled with a non-metal composite material, the heating temperature at two ends of the metal pipe die is higher than the heating temperature in the middle; the metal pipe die is placed on two parallel rotating rollers and is driven by a rotating mechanism to rotate on the rotating rollers; heating devices are respectively arranged beside the two rotating rollers; the densities of the heating devices arranged at two ends of the metal pipeline are greater than the density of a heating device in the middle of the metal pipe die; the heating devices and the rotating rollers are positioned on the same horizontal plane, so that the temperatures of the rotating rollers are higher than the temperature of the metal pipe die. According to the technology, the temperature of the whole composite pipeline is consistent in a production process, so that the overall performance of a final product is stable.

Description

technical field [0001] The invention relates to a heating process for fixed-length production of composite pipes. Background technique [0002] The composite pipe is based on the metal pipe mold, and the outer surface is wound with fiber and thermoplastic composite material to form a high-strength composite pipe. The process is mainly to finely compound high-density fibers according to a certain cross helix angle, which has the proper mechanical properties of ordinary steel pipes, and has strong corrosion resistance, and the cost is lower than traditional steel pipes and plastic pressure pipes. At present, the production of thermoformed pipes adopts equal and constant temperature heating. The heating in sections and different temperatures is determined according to the particularity of the compounding process. In the existing composite pipe production process, especially when the outer surface of the metal pipe mold is wound with non-metallic composite materials, the heatin...

AI Technical Summary

Problems solved by technology

In the existing composite pipe production process, especially when the outer surface of the metal pipe mold is wound with non-metallic composite materials, the heating temperature for the metal pipe mold is the same along the direction of the pipe mold, and then the heat dissipation at both ends of the metal pipe mold is obvious. It is faster than the middle part. Using the same heating temperature for the whole pipe will often lead to low temperature at both ends. Use segmental non-isothermal heating to prevent the bonding effect of the two ends of the composite pipe from being as good as the middle part, making the performance of the whole composite pipe inconsistent and there are differences.

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