Device for pipe annealing and using method

Abstract

The invention provides a device for pipe annealing and a using method. The device comprises a nitrogen heating furnace assembly, an annealing furnace assembly, a fixed guide assembly and a pipe, wherein nitrogen heating furnaces are located on the two sides of an annealing furnace box body, n gas pumps and automatic flow control valves are arranged between the nitrogen heating furnaces and the annealing furnace box body, the gas pumps are connected to the automatic flow control valves through gas conveying pipelines, the two ends of the gas conveying pipeline are connected to the nitrogen heating furnaces and the annealing furnace box body correspondingly, the nitrogen heating furnaces, the gas pumps, the automatic flow control valves and the annealing furnace box body form n channels, a flow guide cylinder, a fixing frame and loading frames are located inside an annealing furnace inner container correspondingly, pipes are placed on all layers of the loading frames, a plurality of pipes can be placed on each loading frame, and two temperature sensors are installed on the top of each pipe. According to the device for the pipe annealing and the using method, the annealing temperature is strictly controlled in the pipe annealing process, the phenomenon that the local temperature is too high or too low is avoided, the pipe annealing temperature is evenly increased, and the mechanical property of the pipes reaches a better standard.

Description

technical field [0001] The invention relates to the technical field of heat treatment, in particular to a device and method for annealing pipes. Background technique [0002] In the process of manufacturing pipes, taking aluminum alloy pipes as an example, it is usually necessary to anneal the aluminum alloy pipes to eliminate residual stress, stabilize dimensions, reduce deformation and cracks, and improve the mechanical properties of aluminum alloy pipes. Annealing treatment methods are mainly divided into induction heating annealing and flame annealing. Flame annealing will pollute the environment, and it is very energy-consuming, and it will generate open flames and cause poor safety. Induction heating annealing can avoid the disadvantages of flame annealing, has the advantages of energy saving, environmental protection, safety, etc., and has high work efficiency, so induction heating annealing is widely used. The mechanical properties of the aluminum alloy tube are clo...

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Problems solved by technology

[0003] The patent No. CN107164627B discloses a furnace for circulating annealing treatment equipment for aluminum alloy tubes. The two-way air pump works in positive and negative directions through an electrical control circuit to realize nitrogen reuse and save energy. However, the device cannot accurately control the annealing temperature of the tube, and cannot Ensure uniform heating of the pipe during the annealing process

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