Manufacturing device and method for bimetal composite hot bend

Abstract

The invention discloses a manufacturing device and a method for a bimetal composite hot bend. The device comprises a thermal induction bend mechanism, an inert gas protecting system and an automatic control system, wherein the thermal induction bend mechanism comprises a rack, a hydraulic cylinder and a hydraulic control system, a rolling wheel, a heating inductor, a limiting stopper, a rotating clamp and a first cooler are arranged on the rack, the inert gas protecting system comprises a gas inlet end socket, an exhausting end socket and a gas circulating pipeline, and a gas inlet end valve, an exhausting end valve, a gas concentration tester, a gas motor and a second cooler are mounted on the gas circulating pipeline. The method includes the steps of intercepting a required bimetal composite pipe, sealing the bimetal composite pipe, installing the bimetal composite pipe on the thermal induction bend mechanism, connecting the inert gas protecting system and roasting and bending. The manufacturing device and the method for the bimetal composite hot bend are reasonable in design, high in intelligent degree, applicability, rate of finished products, product qualities and practicability, and convenient to popularize and apply.

Description

technical field [0001] The invention belongs to the technical field of pipeline connection, and in particular relates to a manufacturing equipment and a manufacturing method of a bimetallic composite hot-simmering bent pipe whose centerlines are not on a straight line. Background technique [0002] Bimetallic composite elbow is a pipe fitting that connects two bimetallic composite pipes that are not on the same straight line. It is one of the indispensable pipe fittings in various high and low pressure pipelines, and is also a basic element widely used in pipeline connections. However, at present, due to the difficulty in the connection technology of bimetallic composite elbows in China, the existing elbows basically use corrosion-resistant alloy pipes, such as titanium alloy steel pipes, nickel alloy steel pipes, etc. The main problems of these elbows are high price and high strength. It is lower than carbon steel pipes, and the corrosion resistance of carbon steel elbows i...

AI Technical Summary

Problems solved by technology

However, at present, due to the difficulty in the connection technology of bimetallic composite elbows in China, the existing elbows basically use corrosion-resistant alloy pipes, such as titanium alloy steel pipes, nickel alloy steel pipes, etc. The main problems of these elbows are high price and high strength. It is lower than carbon steel pipes, and the corrosion resistance of carbon steel elbows is difficult to meet the requirements

However, the bimetallic composite elbow prepared by the currently used manufacturing equipment and process methods is prone to wrinkling, oxidation and substrate separation due to the thinner lining pipe; for high-strength substrate pipes, if the induction heating temperature, cooling rate and The moving speed is not properly controlled, and its mechanical properties are difficult to guarantee. The existing manufacturing methods are difficult to meet the technical requirements of bimetallic hot-simmering elbows. Therefore, how to simply and conveniently manufacture bimetallic composite elbows that meet the technical requirements is crucial to It is extremely necessary to further apply pipes, prevent corrosion of pipelines in oil and gas fields, and reduce operating costs.

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