A kind of production method of ultra-low hydrogen flux-cored welding wire

A technology of flux-cored welding wire and production method, which is applied in the direction of welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems of high diffusible hydrogen content, high cost of seamless flux-cored welding wire, easy moisture absorption, etc., and achieve The process is flexible and controllable, the heating speed is fast, and the hydrogen removal effect is strong

Active Publication Date: 2022-03-04
TIANJIN YONGCHANG WELDING WIRES
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  • Abstract
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  • Claims
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Problems solved by technology

However, due to the existence of the internal powder, the traditional seamed flux-cored wire is easy to absorb moisture after being placed for a long time, which will lead to high diffusible hydrogen content, and the cost of seamless flux-cored wire is too expensive. How to produce ultra-low hydrogen flux-cored wire Recognized challenges in the wood industry

Method used

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  • A kind of production method of ultra-low hydrogen flux-cored welding wire

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Embodiment 1

[0030] Strip thickness: 1.0mm

[0031] Steel strip composition (mass percentage): C≤0.05% Mn≤0.3% P≤0.02% S≤0.02% Other trace elements are excluded, and the balance is Fe element

[0032] Flux core components: flux core accounts for 10% to 20% of the total mass of the welding wire; TiO 2 : 35% to 50%, SiO 2 : 3% to 10%, Al 2 o 3 : 1 to 4%, ZrO 2 Manganese metal: 10% to 20%, ferrosilicon alloy: 1% to 5%, magnesium powder: 4% to 8%, and the balance is iron powder.

[0033] Before the annealing process, the diameter of the thinly drawn welding wire is 1.65mm, and the wire take-up speed is selected as 3m / s.

[0034] Process parameters of annealing process: running speed 3m / s, heating current 200A, heating temperature 550°C, effective heating length 800mm. When the temperature rises, the welding wire is heated instantaneously as a conductor current, and the temperature rises to 550 °C. When the temperature is lowered, the welding wire is wound on the water-cooled tank for 5 t...

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Abstract

The invention provides a production method of ultra-low hydrogen flux-cored welding wire, which sequentially includes the processes of powder filling, rolling forming, wire thinning, annealing, coating drawing, and layer winding; wherein, in the annealing process, the heating temperature is 500-600 ℃; in the annealing device, the running speed of the welding wire is less than or equal to 8m / s, the actual length of the heating section is 800-1000mm, and the heating current is less than or equal to 300A. After passing through the water cooling tank in the device, the welding wire is cooled. After cooling for 2-5 seconds, Lower to 80-150°C; the coating drawing process is carried out in the coating drawing die, which contains hydrogen-free anti-rust oil, and the temperature of the anti-rust oil is 60-80°C. The production method described in the invention has flexible and controllable technology and strong adaptability, can produce ultra-low hydrogen flux-cored welding wires of various types and specifications, and has continuous production process and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of welding wire production, and in particular relates to a production method of ultra-low hydrogen flux-cored welding wire. Background technique [0002] In recent years, flux-cored wire has been widely used in various projects due to its excellent process performance, high deposition efficiency, less spatter, and good forming. However, due to the existence of the internal powder, the traditional seamed flux-cored wire is easy to absorb moisture after being placed for a long time, which will lead to high diffusible hydrogen content, and the cost of seamless flux-cored wire is too expensive. How to produce ultra-low hydrogen flux-cored wire Recognized problems in the material industry. Contents of the invention [0003] In view of this, the present invention aims to propose a production method of ultra-low hydrogen flux-cored welding wire to overcome the deficiencies of the prior art and be applicable to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40B23K35/02
CPCB23K35/40B23K35/0266
Inventor 张洋曹涛李华军郎鹤磊
Owner TIANJIN YONGCHANG WELDING WIRES
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