Matching welding device and system of hot and cold welding wire for oil and gas transmission steel pipe
A technology of welding device and hot welding wire, applied in welding equipment, welding accessories, arc welding equipment, etc., to achieve the effects of increasing cooling speed, reducing heat input, and reducing cladding
Active Publication Date: 2022-07-01
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
[0003] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the prior art how to reduce the cladding amount of the base metal metal during welding of the steel pipe with large diameter and large wall thickness during welding, increase the cooling rate of the weld seam, improve the structure of the weld seam, Improve performance issues
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[0035] In order to make the embodiments, technical solutions and advantages of the present invention more obvious, the technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of them. Example. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.
[0036] One aspect of the present invention provides a matching welding device for hot and cold welding wires for oil and gas conveying steel pipes, the device includes a main body structural part, and the main structural part is provided with a wire conveying mechanism, a first welding device and a second welding device;
[0037] The welding wire conveying mechanism is used for convey...
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The invention belongs to the technical field of welding, and in particular relates to a matching welding device for cold and hot welding wires of oil and gas transmission steel pipes, and aims to solve the problem of how to reduce the cladding amount of base metal metal during welding of large-diameter and large-wall thickness oil and gas transmission steel pipes in the prior art. Increase the cooling rate of the weld, improve the structure of the weld, and improve the performance. The welding device of the present invention includes a wire conveying mechanism for conveying the first welding wire and the second welding wire at the same time, and the first welding wire / the second welding wire can be conveyed by the welding wire conveying mechanism to be connected with the first welding device / the second welding device respectively; Both a welding device and a second welding device include a welding wire tracking mechanism and a welding gun, the welding wire conveying mechanism is used to drive the first welding wire / second welding wire to pass through the welding wire tracking mechanism and move towards the welding gun, and the welding wire tracking mechanism is used to adjust the first welding wire and the second welding wire. The relative pose between the two welding wires. The present application can increase the cooling rate of the welding seam, improve the structure and improve the performance.
Description
technical field [0001] The invention belongs to the technical field of welding, and in particular relates to a matching welding device and system for cold and hot welding wires of oil and gas conveying steel pipes. Background technique [0002] With the construction of long-distance and large-capacity pipelines, the diameter and wall thickness of steel pipes for oil and gas transportation are getting larger and larger. With the increase of wall thickness, the amount of cladding metal of the base metal increases, and the energy input of the weld line increases. The heat affected zone of the weld is overheated, the structure is coarse, the toughness is reduced, and the inherent quality of the steel pipe is reduced. How to reduce the cladding amount of the base metal during welding of large-diameter and large-wall thickness oil and gas transmission pipes, increase the cooling rate of the weld, improve the structure of the weld, and improve the performance is one of the keys to...
Claims
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IPC IPC(8): B23K9/133B23K9/32
CPCB23K9/133B23K9/32
Inventor 赵波王勇王斌赵与越侯永高王友生
Owner BC P INC CHINA NAT PETROLEUM CORP