Water curtain argon integrated welding protection device in high frequency longitudinally welded pipe

Abstract

The present invention provides a water curtain argon integrated welding protection device in a high frequency longitudinally welded pipe. Inner burr mandrels, a first water curtain protection water inlet, an arbor impedance upper part slag cleaning water pipe and an argon inlet are fixed to the arbor of the device through screws. A first water curtain protection is connected to the inner burr mandrels respectively, a second high temperature cotton protection is fastened at the periphery of the inner burr mandrels through a sealant, and the first water curtain protection and the first water curtain protection water inlet are fixedly connected through a bolt. The device has the advantages that the device is suitable for the high frequency longitudinally welding production of a large span pipe diameter stainless steel with the diameter of 108mm to 660mm, a high silicon pipe line steel and other material, the argon directly acts the inside of a pipe body, and the utilization rate is high. According to the device, the consumption of a protection gas is 1/4 of an original consumption, the replacement frequency of the protection gas is reduced, since the protection gas is expensive, the production cost is greatly reduced, and when a production pipe diameter is larger, the cost reduction is more obvious.

Description

technical field [0001] The invention relates to a welding protection device, in particular to a high-frequency straight seam welded pipe inner water curtain argon comprehensive welding protection device. Background technique [0002] With the continuous improvement of the quality of high-frequency longitudinally welded pipes, due to their high efficiency and energy-saving characteristics, some difficult-to-weld materials have gradually produced high-frequency longitudinally welded pipes, such as stainless steel, high-silicon pipeline steel and other materials. Since the oxidation process of these materials is different from that of ordinary carbon steel, it is difficult to effectively control the oxidation of the welding process and ensure the quality of the weld. [0003] In the high-frequency straight seam welding production of traditional stainless steel, high-silicon pipeline steel and other materials, the entire extrusion welding frame is protected by argon gas, and the...

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Problems solved by technology

[0004] In view of the structural deficiencies in the prior art, the purpose of the present invention is to provide a comprehensive welding protection device for water curtain and argon gas in the high-frequency straight seam welded pipe, so as to solve the problem of argon gas protection for large-diameter steel pipes with diameters of 159mm and 355mm. welding

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