Metal-powder type stainless steel flux-cored wire

A technology for flux-cored welding wire and stainless steel, which is applied in the field of flux-cored welding wire and metal powder type stainless steel flux-cored welding wire, can solve the problems of unreasonable flux-cored powder compatibility, brittle change of weld metal, poor weld toughness, etc., so as to improve the smoke and dust. The effect of large, stable arc combustion and fast deposition speed

Inactive Publication Date: 2013-04-24
台州海翔焊接材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of this flux-cored wire solves the welding requirements for welding 2507 super duplex stainless steel, and the mechanical properties of the weld metal are also better, but it is only for the welding of 2507 super phase stainless steel, and its application range is relatively small, and there is no better solution. Solve the problem of poor weld toughness of the metal powder type stainless steel flux-cored welding wire used for welding steel and large smoke and dust generated due to high deposition speed during welding, and the unreasonable compatibility of the flux core powder may easily cause weld metal damage Fragile change

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The selected drug core is composed of the following components by weight:

[0032] Chromium powder: 15%; nickel powder: 10%; molybdenum powder: 0.5%; manganese powder: 0.2%; arc stabilizer: 1.0%; the balance is iron powder; the arc stabilizer is potassium fluoride. The selected powders and materials are put into the mixer and mixed evenly for later use;

[0033] A 308L stainless steel strip with a width of 12mm and a thickness of 0.4mm is selected as the sheath of the flux-cored welding wire of the present invention. After the selected stainless steel strip is derusted and degreasing, it is pressed into a U-shape by a forming machine; The drug core is filled into the U-shaped groove to make the filling rate 32.5%, and then the opening of the U-shaped groove is closed to form an O shape, so that the drug core is wrapped in it, and then it is drawn and reduced step by step through a wire drawing machine. Finally, the diameter is 1.0 mm to obtain the metal powder type stainles...

Embodiment 2

[0035] The selected drug core is composed of the following components by weight:

[0036] Chromium powder: 25%; nickel powder: 10%; molybdenum powder: 0.2%; manganese powder: 0.6%; arc stabilizer: 3.0%; slag remover: rare earth element (RE); the balance is iron powder; also includes 0.2 % Chromium nitride powder, the arc stabilizing agent is aluminum powder, the slag remover is rare earth element (RE), and the rare earth element (RE) is cerium, lanthanum, praseodymium, neodymium, scandium One; the addition of chromium nitride is beneficial to synergize with aluminum powder as a slag remover, so as to form a stable slag remover, and is also beneficial to improve the strength and toughness of the weld; the selected above The powder and materials are put into the mixer and mixed uniformly to obtain the drug core of the present invention, which is ready for use;

[0037] A 308L stainless steel strip with a width of 8mm and a thickness of 0.7mm is selected as the outer sheath of the fl...

Embodiment 3

[0039] The selected drug core is composed of the following components by weight:

[0040] Chromium powder: 22%; Nickel powder: 15%; Molybdenum powder: 0.1%; Manganese powder: 0.4%; Arc stabilizer: 2.0%; Deslagging agent: 0.5%; the balance is iron powder; the arc stabilizer It is a manganese-silicon alloy, the slag remover is rare earth element (RE), and the rare earth element (RE) is one of cerium, lanthanum, praseodymium, neodymium, and scandium; the selected powder materials Put them into the mixer and mix uniformly to obtain the drug core of the present invention, which is ready for use;

[0041] A 308L stainless steel strip with a width of 8mm and a thickness of 0.7mm is selected as the outer sheath of the flux-cored welding wire of the present invention. After the selected stainless steel strip is derusted and degreasing, it is pressed into a U-shape by a forming machine; The uniformly mixed drug core is filled into the U-shaped groove to make the filling rate 40%, and the op...

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Abstract

The invention relates to a metal-powder type stainless steel flux-cored wire and belongs to the technical field of welding materials. For the metal-powder type stainless steel flux-cored wire, a stainless steel belt serves as an outer skin, and a flux core is filled in the stainless steel belt at the filling rate of 30 to 40 percent to manufacture the flux-cored wire, wherein the flux core comprises chromium powder, nickel powder, molybdenum powder, manganese powder, an arc stabilizer, a deslagging agent and iron powder. The metal-powder type stainless steel flux-cored wire has the advantagesof reasonable compatibility, strong synergistic effect among components, good toughness, high metal strength and high corrosion resistance of a welded seam, stable combustion of the welding wire during welding, and low splattering; the welded seam is bright and elegant in molding; real production processes are simplified without subsequent acid-washing, grinding, polishing and the like; and industrialized production is more facilitated.

Description

Technical field [0001] The invention relates to a flux-cored welding wire, in particular to a metal powder type stainless steel flux-cored welding wire, belonging to the technical field of welding materials. Background technique [0002] Flux-cored welding wire is a new type of welding material that has developed rapidly in recent years, and it is the product with the highest technical content among the existing welding materials. Therefore, flux-cored welding wire is also widely used in the manufacture and repair of construction, bridges, chemical, metallurgy, electric power and industrial repair industries. [0003] Flux-cored wires can be classified according to different conditions. For example, according to different protection conditions, they can be divided into gas protection (CO 2 , Ar-rich mixed gas) and self-protection; according to the diameter of the welding wire, it can be divided into a diameter of less than 2.0mm and a thick diameter of more than 2.0mm; according to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30
Inventor 金鹏鲁永顺
Owner 台州海翔焊接材料有限公司
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