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Low-carbon steel high-speed MAG welding active agent and using method thereof

An active agent and low-carbon steel technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of poor weld formation, etc., to eliminate weld undercut, promote popularization and application, and improve wettability and spreading sexual effect

Active Publication Date: 2019-04-05
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of high-speed MAG welding, the present invention aims to provide an activator for low-carbon steel high-speed MAG welding and its use method, to solve the problem of poor formation of low-carbon steel high-speed MAG welding seam, and to realize low-carbon steel in 1000mm / min~1500mm / min under the condition of high-speed MAG welding seam shape optimization, improve welding production efficiency

Method used

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  • Low-carbon steel high-speed MAG welding active agent and using method thereof
  • Low-carbon steel high-speed MAG welding active agent and using method thereof
  • Low-carbon steel high-speed MAG welding active agent and using method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] Welding steps in this embodiment: Step 1: Use an electronic scale to carry out activator batching according to the weight ratio to make an activator for low-carbon steel high-speed MAG welding, wherein the components are distributed by weight percentage, respectively CaF 2: 40%, MgF 2 : 20%, SiO 2 : 5%, TiO 2 : 25%, Cr 2 o 3 : 6%, CeO 2 : 4%, the powder particle size of each component is less than 200 mesh. Put the powders of each component together in a ball mill for 30 minutes to make them fully mixed and become the activator powder for high-speed MAG welding of low-carbon steel;

[0036] Step 2: The base material is a low-carbon steel workpiece with a thickness of 3 mm. Before welding, the surface of the low-carbon steel workpiece is mechanically polished until a metallic luster appears, and the surface of the low-carbon steel workpiece is wiped with acetone to remove surface oil stains;

[0037] Step 3: Mix the activator powder prepared in the first step for h...

Embodiment 2

[0043] Welding steps in this embodiment: Step 1: Use an electronic scale to carry out activator batching according to the weight ratio to make an activator for low-carbon steel high-speed MAG welding, wherein the components are distributed by weight percentage, respectively CaF 2 : 35%, MgF 2 : 17%, SiO 2 : 8%, TiO 2 : 27%, Cr 2 o 3 : 8%, CeO 2 : 5%, the powder particle size of each component is less than 200 mesh. Put the powders of each component together in a ball mill for 30 minutes to make them fully mixed and become the activator powder for high-speed MAG welding of low-carbon steel;

[0044] Step 2: The base material is a low-carbon steel workpiece with a thickness of 3 mm. Before welding, the surface of the low-carbon steel workpiece is mechanically polished until a metallic luster appears, and the surface of the low-carbon steel workpiece is wiped with acetone to remove surface oil stains;

[0045] Step 3: Mix the activator powder prepared in the first step for ...

Embodiment 3

[0048] Welding steps in this embodiment: Step 1: Use an electronic scale to carry out activator batching according to the weight ratio to make an activator for low-carbon steel high-speed MAG welding, wherein the components are distributed by weight percentage, respectively CaF 2 : 30%, MgF 2 : 15%, SiO 2 : 10%, TiO 2 : 30%, Cr 2 o 3 : 9%, CeO 2 : 6%, the powder particle size of each component is less than 200 mesh. Put the powders of each component together in a ball mill for 30 minutes to make them fully mixed and become the activator powder for high-speed MAG welding of low-carbon steel;

[0049] Step 2: The base material is a low-carbon steel workpiece with a thickness of 3 mm. Before welding, the surface of the low-carbon steel workpiece is mechanically polished until a metallic luster appears, and the surface of the low-carbon steel workpiece is wiped with acetone to remove surface oil stains;

[0050] Step 3: Mix the activator powder prepared in the first step for...

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Abstract

The invention relates to a low-carbon steel high-speed MAG welding active agent and a using method thereof. The active agent is composed of CaF2 powder particles, MgF2 powder particles, SiO2 powder particles, TiO2 powder particles, Cr2O3 powder particles and CeO2 powder particles of which the powder sizes are all smaller than 200 meshes. The active agent comprises the components of, by weight, 30-40% of CaF2, 15-20% of MgF2, 5-10% of SiO2, 25-30% of TiO2, 6-9% of Cr2O3 and 4-6% of CeO2, and all the components are uniformly and sufficiently mixed into active agent powder; the surface of a low-carbon workpiece is polished through a mechanical method till metallic luster occurs, and wiped with acetone so that greasy dirt on the surface can be removed; the prepared active agent powder is mixedwith the appropriate amount of acetone to form slurry convenient to paint, and then, the slurry is uniformly brushed on the surface of a to-be-welded weld pass of the low-carbon workpiece; and afterthe coating layer is dried, high-speed MAG welding is conducted. The weld width of a welded seam is increased, hump weld passes, welded seam undercuts and other welding defects are eliminated, and thewelded seam forming quality and the welding efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of welding, and relates to an activating agent for high-speed MAG welding of low-carbon steel and a using method. Background technique [0002] The actual welding speed of MAG welding is generally 300-500mm / min. When the welding speed exceeds a certain critical value, weld forming defects such as hump bead and undercut will appear, and the quality of the weld cannot meet the production requirements. When the welding speed is greater than 1000mm / min, when the high-speed welding level is reached, the problem of poor weld formation is more serious. The incompatibility of MAG welding to high-speed welding makes it difficult to improve its welding efficiency. MAG welding is the main welding method used in automatic arc welding. In order to fully exploit the potential of automatic welding and greatly improve welding efficiency, it is very necessary to improve the adaptability of MAG welding to high-speed welding....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173B23K35/36B23K35/40
CPCB23K9/173B23K35/3605B23K35/40
Inventor 杨宗辉陆李和倪程陆峰李晓泉王玉文
Owner NANJING INST OF TECH
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