Continuous fiber reinforced pipe butt joint method
A fiber-reinforced and continuous technology, applied in the field of plastic pipe welding, can solve the problems of high cost, continuous fiber-reinforced pipes cannot be welded with ordinary plastic pipes, complex process procedures, etc., and achieve low-cost and low-cost docking , The effect of simple process
Active Publication Date: 2018-02-13
四川高德特科技有限公司
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Problems solved by technology
Due to the special structure of the continuous fiber reinforced pipe, the physical properties (melting point etc.) ; At present, the butt joint method of continuous fiber reinforced pipe can only adopt the expensive electrofusion pipe fitting socket or the flange butt joint with complicated process procedures
Method used
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Embodiment
[0035] Select a continuous fiber-reinforced pipe of DN110mm and wall thickness of 5.3mm, cut a 10m pipe so that the end face is perpendicular to the axis; mark the outer wall of the pipe 80mm away from the end face of the pipe, and heat the heating sleeve to 400°C at the same time, then Insert the end of the pipe into the heating sleeve horizontally along the axial direction to the marked position. The distance between the outer circumferential wall of the inserted part of the pipe and the inner wall of the heating sleeve is 10 mm. After heating for 6 minutes, take the pipe out of the heating sleeve and pass The clamping part 3 fixes the pipe on the machine base, starts the hydraulic transmission device 1, and applies a force of 1600N to the top plate 11 until the annular pressure plate 31 contacts the top of the protrusion 25, then closes the hydraulic transmission device 1, and waits for the pipe to be flanged and partially cooled After curing, remove the pipe; use the same s...
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Abstract
The invention discloses a continuous fiber-reinforced pipe butt joint method. The continuous fiber-reinforced pipe butt joint method mainly includes the steps that a, the ends of pipes are subjected to thermal treatment; b, the ends of the pipes are subjected to flanging treatment; and c, hot melting butt joint is carried out. In the step a, by means of control over factors such as the heating temperature, the heating time and the distance between the circumferential outer walls of the parts, extending into a heating sleeve, of the pipes and the inner wall of the heating sleeve, the ends of the pipes are heated to a semi-molten state, and it is guaranteed that continuous fiber-reinforced bands are always located in the positions of middle interlayers of the pipes, so that integral property of the continuous fiber-reinforced pipes is guaranteed. In the step b, by means of control over extrusion force, it is guaranteed that phenomena of pipe expanding and cracking or unfulfilled forming are avoided during forming of pipe flangings, the pipe flangings are formed in a forming cavity formed by matching of a flanging mould with an annular pressing plate on the end face of a clamping part, and the flanging forming quality is guaranteed. In the step c, by means of control over the heating temperature, the heating time and exerted external force during butt joint of the to-be-jointed pipes, the quality of pipe butt joint is guaranteed.
Description
technical field [0001] The invention relates to a continuous fiber reinforced pipe butt joint method, which belongs to the technical field of plastic pipe welding. Background technique [0002] Continuous fiber-reinforced pipe is a high-pressure plastic composite pipe whose inner and outer layers use thermoplastics as the matrix material, and the middle layer uses continuous fiber composite material as the reinforcement belt. It is usually used as buried water supply pipes or gas pipes. Its ring stiffness , strength and other properties are far superior to ordinary plastic pipes. [0003] The existing connection methods of plastic pipes mainly include electric fusion pipe fitting socket connection, socket type rubber ring connection, electric fusion belt welding, flange butt joint, hot melt butt joint and so on. The use of electrofusion pipe fittings is only suitable for small-diameter pipe connections, and the cost of electrofusion pipe fittings is high; the cost of socket...
Claims
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IPC IPC(8): B29C69/00B29C65/18B29C57/08B29C57/00
CPCB29C57/00B29C57/08B29C65/18B29C69/00
Inventor 王庆昭陈作伟
Owner 四川高德特科技有限公司