Multi-stranded welding wires

A multi-strand stranded welding wire, welding wire technology, applied in welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problem of coilability, poor rigidity, inconvenient welding of large metal components, and difficulty in ensuring welding quality and other problems, to achieve the effect of strong coilability, high deposition efficiency and large melting width.

Inactive Publication Date: 2009-10-21
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the diameter of traditional flux-cored welding wire is small (1.2mm~6.0mm mostly), which is not convenient for welding large metal components. If the diameter of traditional flux-cored welding wire is further increased, its coilability and rigidity will deteriorate. , it is difficult to guarantee the welding quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment one, figure 1 Shown is a cross-sectional view of an example of a three-strand stranded welding wire, which is twisted together by three flux-cored welding wires (2), which are called peripheral wires, and a solid-cored welding wire or a flux-cored welding wire can be selected as the core wire in the middle according to needs. The chemical composition of the three flux-cored wires is the same, the main components are carbon (C) 0.04%, nitrogen (N) 0.12%, manganese (Mn) 1.2%, silicon (Si) 0.7%, nickel (Ni) 4.0%, chromium (Cr ) 12.5%, molybdenum (Mo) 0.4%, iron (Fe) balance. The diameters of the three strands of flux cored wire are the same. When the diameter of each strand is: 4.8mm, 5.0mm and above, the diameter of the core wire can be: 0.7mm, 0.8mm and above, and the diameter after stranding can reach 10.4mm, 10.8mm and above. above.

Embodiment 2

[0012] Embodiment two, figure 2 Shown is a cross-sectional view of an example of a five-strand stranded welding wire, which can be divided into core wire and peripheral wire from the structural point of view. The core wire is a solid core wire (1), and its main chemical composition is carbon (C) 0.5%, Vanadium (V) 0.5%, manganese (Mn) 1.5%, silicon (Si) 1.0%, tungsten (W) 1.5%, chromium (Cr) 7.0%, molybdenum (Mo) 1.5%, iron (Fe) balance. The peripheral wire is four strands of flux-cored welding wire (2), and the chemical composition of each two strands of welding wire is the same, wherein: the main chemical composition of flux-cored welding wire 2a is carbon (C) 0.45%, vanadium (V) 1.2%, tungsten (W) 1.5% , chromium (Cr) 5.5%, molybdenum (Mo) 1.1%, iron (Fe) balance; the main chemical composition of flux cored wire 2b is carbon (C) 0.45%, vanadium (V) 2.7%, tungsten (W) 2.0 %, chromium (Cr) 3.1%, molybdenum (Mo) 2.0%, iron (Fe) balance. The diameter of the core wire is smal...

Embodiment 3

[0013] Embodiment three, image 3 Shown is a cross-sectional view of an example of a seven-strand stranded welding wire, which can be divided into a core wire and a peripheral wire in terms of structure. The core wire is a single flux-cored wire (2), and the peripheral wire is a three-strand flux-cored wire (2) and three Solid wire (1). Among them, the chemical composition of the three strands of solid wire is the same, and the chemical composition is mainly carbon (C) 2.0%, manganese (Mn) 1.0%, silicon (Si) 2.0%, chromium (Cr) 13.0%, molybdenum (Mo) 1.0%, iron (Fe) balance; the chemical composition of the other four strands of flux cored wire is mainly carbon (C) 0.5%, tungsten (W) 1.2%, chromium (Cr) 6.0%, molybdenum (Mo) 1.1%, iron (Fe) balance . According to actual needs, the chemical composition of the three strands of solid wire can be different. The diameters of the seven welding wires are the same, and the diameter of each strand can be: 1.2mm, 1.4mm, 1.6mm and abov...

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Abstract

The invention relates to multi-stranded welding wires, comprising solidwires and flux-cored wires; stranded solidwires and flux-cored wires are twisted and stranded to form an integral part or multistrand flux-cored wires are twisted to form an integral part; wherein, welding wires positioned in the center are called core wires; the other welding wires twisted around the core wires in the center are called peripheral wires. The invention resolves the defects of the traditional flux-cored wires such as small diameter, difficult swirling when the diameter of the traditional flux-cored wires is increased, poor rigidity and the like; the diameter of the stranded flux-cored wires has a wide variation range, thus obtaining larger weld depth, weld width or wider deposited layer which are in favor of the welding of large scale metal construction. Stranded flux-cored wires feature deep weld depth, large weld width, high deposition efficiency, simple process, high efficiency, strong swirling and good rigidity, thus being capable of obtaining larger weld depth, weld width or wider deposited layer and has a larger application range.

Description

technical field [0001] The invention relates to a welding wire, which is especially suitable for metal welding or surface overlay welding with deep penetration and large penetration width. Background technique [0002] Flux-cored welding wire appeared in the United States in the early 1970s. In the past 30 years, both the output and the variety have tended to continue to develop. It is widely used in metallurgy, steel structures, roads, railways, bridges and other fields. It has the advantages of high deposition rate, large penetration depth, good manufacturability and good mechanical properties. However, the diameter of traditional flux-cored welding wire is small (1.2mm~6.0mm mostly), which is not convenient for welding large metal components. If the diameter of traditional flux-cored welding wire is further increased, its coilability and rigidity will deteriorate. , it is difficult to guarantee the welding quality. Contents of the invention [0003] The purpose of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/16B23K35/30
Inventor 高顶阿兰·托马斯·麦尔郝锋
Owner CHINA UNIV OF MINING & TECH
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