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Process for producing copper alloy wire containing active element

A technology of active elements and manufacturing methods, which is applied in the field of copper alloy wire manufacturing, can solve the problems of severe oxidation loss, unstable quality, and difficulty in increasing the pulling speed of ingots, and achieve the effect of stable casting

Active Publication Date: 2012-09-19
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the graphite mold itself is in contact with the hot molten copper, oxidation losses become severe
In addition, when using a heated mold, it is difficult to increase the pulling speed of the ingot, so there is a problem that the production efficiency cannot be improved.
Furthermore, in this Patent Document 4, since the ingot is pulled out in a substantially horizontal direction, there is also a problem that the quality is unstable due to the influence of gravity.

Method used

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  • Process for producing copper alloy wire containing active element
  • Process for producing copper alloy wire containing active element
  • Process for producing copper alloy wire containing active element

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Experimental program
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Effect test

Embodiment Construction

[0047] Hereinafter, an embodiment of a method for manufacturing an active element-containing copper alloy wire according to one aspect of the present invention will be described with reference to the drawings.

[0048] The active element-containing copper alloy wire produced in the production method of this embodiment contains Cr, Zr, Si, etc. as active elements highly reactive with graphite (graphite) constituting the graphite sleeve 31 described later. Furthermore, an element having high reactivity with graphite (graphite) refers to an element having a low standard free energy of carbide formation and having a more stable carbide-formed substance than elemental elements.

[0049] In this embodiment, the active element-containing copper alloy wire is composed of Cr: 0.25% by mass to 0.45% by mass, Zr: 0.05% by mass to 0.15% by mass, Si: 0.01% by mass to 0.05% by mass, and the remainder Composed of Cu-Cr-Zr-Si alloy containing Cu and unavoidable impurities.

[0050] In additi...

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Abstract

Disclosed is a process for producing a copper alloy wire containing an active element, the process comprising: a molten-copper formation step in which a raw copper material is melted to form molten copper; an active-element addition step in which an active element is added to the molten copper; a holding step in which the molten copper is held in a casting furnace; and a casting step in which a cast is continuously produced with a casting die connected to the casting furnace. The casting die has been connected to the casting furnace through a heat insulation member on the vertically lower side of the casting furnace. In the casting step, a pressure is applied toward the inside of the casting die to supply the molten copper to the casting die, and the molten copper is cooled and solidified in the casting die.

Description

technical field [0001] The present invention relates to a method for producing a high-strength copper alloy wire material composed of a copper alloy containing Cr, Zr, Si, etc., and used for trolley wires for electric vehicles and the like. [0002] this application claims priority based on Japanese Patent Application No. 2010-14397 for which it applied to Japan on January 26, 2010, The content is used here. Background technique [0003] Conventionally, copper wire materials such as pure copper or copper alloys containing Sn have been widely used as raw materials for trolley wires for electric vehicles and the like. These copper wires are manufactured using the continuous casting machines shown in patent document 1 and patent document 2, for example. In the continuous casting machines disclosed in Patent Document 1 and Patent Document 2, the casting furnace is directly connected to the mold, and the ingot solidified in the mold is pulled out horizontally, vertically upward,...

Claims

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Application Information

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IPC IPC(8): B22D11/00B22D11/041B22D11/055B22D11/103C22C9/00
CPCC22C9/00B22D11/004C22C1/02B22D11/055B22D11/059B22D11/041B22D11/103
Inventor 小出正登大乐和之高木贤一
Owner MITSUBISHI MATERIALS CORP