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Preparation method of casting blank for copper-silver alloy wire suitable for ultra-fine drawing

A copper-silver alloy, ultra-fine technology, applied in the direction of casting molding equipment, metal processing equipment, metal/alloy conductors, etc., can solve the problems of limited processing volume, limited outer diameter of billets, and reduction of pores, inclusions, and looseness of billets , to achieve the effect of reducing defects such as pores, inclusions and slag inclusions, and improving the uniformity of the structure and composition

Active Publication Date: 2022-07-15
INST OF APPLIED PHYSICS JIANGXI ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the casting slabs produced by the traditional continuous casting and rolling method, up-drawing continuous casting method, down-drawing continuous casting method and warm-type continuous casting method cannot effectively reduce the inclusion defects on the one hand, and on the other hand, the above-mentioned methods produce The outer diameter of the slab is limited, all less than 30mm, resulting in a limited amount of processing in the subsequent processing process, which is not conducive to further reducing the remaining defects such as pores, inclusions, and looseness in the slab
However, in the conventional vacuum melting casting method, the slag cannot be removed from the melt, and the scum is inevitably involved in the ingot during casting, forming casting defects such as inclusions

Method used

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  • Preparation method of casting blank for copper-silver alloy wire suitable for ultra-fine drawing

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Embodiment 1

[0029] The embodiment of the present invention provides a method for preparing a copper-silver alloy wire casting billet suitable for ultra-fine drawing, and the specific steps are as follows:

[0030] Step 1: Weigh the required raw materials according to the alloy mass percentage, and degreasing, cleaning, drying, and refining rare earth yttrium for impurity removal, weighing 0.06% of the total mass of copper and silver, in the form of copper-rare earth master alloy Add, the adopted raw material and its proportion are as shown in table 1:

[0031] Table 1: Raw materials and their proportions

[0032] raw material purity mass percentage pure copper ≥99.95％ margin Sterling silver ≥99.95％ 1.5％ Copper yttrium master alloy Contains Y: 12% 0.06% (based on Y content)

[0033] Step 2: Load the furnace, first load the silver nuggets, spread them to the bottom of the crucible, then load the electrolytic copper nuggets, and add the copper-rare ...

Embodiment 2

[0040] This embodiment provides another method for preparing a copper-silver alloy wire casting billet suitable for ultra-fine drawing, and the specific steps are as follows:

[0041] Step 1: Weigh the required raw materials according to the alloy mass percentage, and degreasing, cleaning, drying, and refining rare earth yttrium for impurity removal, weighing 0.04% of the total mass of copper and silver, in the form of copper-rare earth master alloy Add, the raw material adopted and its proportioning are as shown in table 2:

[0042] Table 2: Raw materials and their proportions

[0043] raw material purity mass percentage pure copper ≥99.95％ margin Sterling silver ≥99.95％ 4.5％ Copper yttrium master alloy Contains Y: 12% 0.04% (based on Y content)

[0044] Step 2: Load the furnace, first load the silver nuggets, spread them to the bottom of the crucible, then load the electrolytic copper nuggets, and add the copper-rare earth intermedi...

Embodiment 3

[0051] This embodiment provides another method for preparing a copper-silver alloy wire casting billet suitable for ultra-fine drawing, which specifically includes the following:

[0052] Step 1: Weigh the required raw materials according to the alloy mass percentage, and degreasing, cleaning, drying, refining the rare earth yttrium for removing impurities, weighing 0.02% of the total mass of copper and silver, in the form of copper-rare earth master alloy Add, the adopted raw material and its proportioning are as shown in table 2:

[0053] Table 3: Raw materials and their proportions

[0054] raw material purity mass percentage pure copper ≥99.95％ margin Sterling silver ≥99.95％ 8.5％ Copper yttrium master alloy Contains Y: 12% 0.02% (based on Y content)

[0055] Step 2: Load the furnace, first load the silver nuggets, spread them to the bottom of the crucible, then load the electrolytic copper nuggets, and add the copper-rare earth in...

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Abstract

The invention discloses a preparation method of a casting blank for a copper-silver alloy wire suitable for ultra-fine drawing, and particularly relates to the technical field of preparation of high-quality copper alloy casting blanks. Step 2, charging; step 3, vacuum melting; step 4, in-situ cooling of the melt; 5, scum is cut off; step 6, carrying out remelting treatment; and 7, casting. According to the method, the technical means of vacuum induction melting, trace rare earth refining, melt in-situ cooling, repeated remelting after scum on the surface layer of the blank is cut off and the like are adopted, so that the defects of impurities, inclusions, slag inclusions and the like in the copper-silver alloy casting blank can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of preparing high-quality copper alloy casting billets, and more particularly, the invention relates to a method for preparing billets for copper-silver alloy wires suitable for ultra-fine drawing. Background technique [0002] Copper-silver alloy has superior strength and electrical conductivity, and also has a high softening resistance temperature, and the addition of silver has little effect on the plasticity and electrical conductivity of copper. In recent years, copper-silver alloys have become the best candidates for the production of ultra-fine copper wire rods, which are widely used in the production of high-frequency data transmission / audio and video transmission wires and cables, robot cables, medical cables, automotive cables and micro motor coils Wait. At present, the drawing equipment and technology for drawing copper alloy ultra-fine wires of Φ0.03mm and below in my country are relatively matu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C9/00C22C1/06C22B9/00C22B9/04C22B9/16B22D27/04B22C9/06H01B1/02
CPCC22C1/03C22C9/00C22C1/06C22B9/003C22B9/04C22B9/16B22D27/04B22C9/065H01B1/026
Inventor 曾延琦余辉辉邹晋胡强姜江刘秋香胡晓娜刘琦郭玉松邱伊健胡超云丁增明
Owner INST OF APPLIED PHYSICS JIANGXI ACADEMY OF SCI
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