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Method for preparing new copper-iron welding wires

A copper-iron and welding wire technology, applied in welding equipment, manufacturing tools, welding media, etc., can solve problems such as large differences in expansion coefficient, large welding residual stress and deformation of welded joints, and complicated welding, so as to achieve uniform overall structure of the alloy, Guaranteed no doping of impurities and high purity

Active Publication Date: 2020-10-09
SIRUI ADVANCED COPPER ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical composition and thermal physical properties of copper and steel are quite different, and defects such as pores and cracks are particularly easy to form. The difference in thermal physical properties will lead to inconsistent melting and solidification processes, which will directly affect the thermal cycle process in the welding process. , crystallization conditions, etc.; the large difference in linear expansion coefficient between copper and steel will cause large welding residual stress and deformation in the welded joint
Therefore, welding of dissimilar alloys is more complicated and difficult than welding of the same material
[0003] At present, the different welding methods for copper and steel include laser welding technology, friction stir welding technology, plasma welding technology, and electron beam welding technology. These technical methods use expensive equipment and high cost, and cannot meet the development of industrialization.

Method used

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  • Method for preparing new copper-iron welding wires
  • Method for preparing new copper-iron welding wires
  • Method for preparing new copper-iron welding wires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: a kind of preparation method of novel copper-iron welding wire is characterized in that, specifically comprises:

[0032] Step 1: Ingredients

[0033] In terms of percentage content, the percentage content of Fe element in the raw material is 5%, and the remainder is Cu element; the Fe element is added in the form of CuFe master alloy, and the remaining Cu element is added in the form of electrolytic copper plate;

[0034] Step 2: Smelting

[0035] Vacuum smelting is used for smelting; the specific steps of smelting are: put the prepared raw materials into the vacuum smelting furnace, when the vacuum degree reaches 2Pa, heat up, increase the heating power to 20KW, keep warm for 3min; then use 1KW Raise the heating power to 40KW at a rising rate of / s, and keep it warm for 12 minutes; then raise the heating power to 80KW at a rising rate of 2KW / s, and keep it until the raw materials in the crucible are uniform up and down, reduce the power to 10KW, and ope...

Embodiment 2

[0046] Embodiment 2: a kind of preparation method of novel copper-iron welding wire, is characterized in that, specifically comprises:

[0047] Step 1: Ingredients

[0048] In terms of percentage content, the percentage content of Fe element in the raw material is 10%, and the remainder is Cu element; the Fe element is added in the form of CuFe master alloy, and the remaining Cu element is added in the form of electrolytic copper plate;

[0049] Step 2: Smelting

[0050] Vacuum smelting is used for smelting; the specific steps of smelting are: put the prepared raw materials into the vacuum smelting furnace, when the vacuum degree reaches 4Pa, heat up, increase the heating power to 30KW, keep warm for 4min; then use 1KW Raise the heating power to 50KW at a rising rate of / s and keep it warm for 15 minutes; then raise the heating power to 90KW at a rising rate of 2KW / s and keep it until the raw materials in the crucible are evenly up and down, then reduce the power to 20KW and ...

Embodiment 3

[0061] Embodiment 3: This embodiment is basically the same as Embodiment 1, the difference is:

[0062] Step 2: Smelting

[0063] Vacuum smelting is used for smelting; the specific steps of smelting are: put the prepared raw materials into the vacuum smelting furnace, when the vacuum degree reaches 2Pa, heat up, increase the heating power to 20KW, and keep warm for 5min; then heat Increase the power to 40KW and keep it warm for 5 minutes; then increase the heating power to 60KW and keep it until the raw materials in the crucible are uniform up and down, then reduce the power to 5KW, open the inert gas valve, and then slowly fill the furnace with inert gas. When it rises to 0.08Mpa, close the inert gas valve, increase the power to 70KW±5KW, and refine for 1min; among them, the inert gas uses high-purity argon with a concentration of 99.999%;

[0064] Step Three: Casting

[0065] Reduce the power of the vacuum melting furnace from 70KW±5KW to 40KW±5KW, keep it for 20s and then...

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Abstract

The invention provides a method for preparing new copper-iron welding wires. The method specifically comprises the following steps of preparing ingredients: in terms of percentage content, the percentage of Fe in the raw material is 5-15%, and the remainder is Cu; smelting by a method of vacuum melting; casting and taking out of the furnace, wherein the casting speed is first slow, then appropriately accelerated, and finally slowed down; hot forging and machining an excircle; hot rolling and coiling; drawing and intermediate annealing; and straightening, cutting and slitting. The copper-iron welding wires prepared by the invention are fibrous in the iron phase, evenly distributed in a copper matrix, and have uniform overall structure of the alloy. The prepared copper-iron welding wires contains both copper and iron components at the same time, which can well meet the requirements of welding between copper materials and iron materials.

Description

technical field [0001] The invention relates to the technical field of CuFe alloy preparation technology, in particular to a preparation method of a novel copper-iron welding wire. Background technique [0002] With the development of the industrialization process, the use of engineering structural parts has also developed from the original welded structural parts of the same alloy to welded structural parts of dissimilar alloys. Copper and steel dissimilar alloy composite components can not only combine the advantages of copper and steel, but also save precious metals and reduce costs. However, the chemical composition and thermal physical properties of copper and steel are quite different, and defects such as pores and cracks are particularly easy to form. The difference in thermal physical properties will lead to inconsistent melting and solidification processes, which will directly affect the thermal cycle process in the welding process. , crystallization conditions, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/302B23K35/40
Inventor 周斌郭创立孙君鹏苟锁王群李潇王沛梁建斌张青队
Owner SIRUI ADVANCED COPPER ALLOY CO LTD
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