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a kind of agsno 2 Preparation method of multi-core composite wire

A composite wire and composite rod technology, which is used in cable/conductor manufacturing, electrical components, circuits, etc., can solve the problems of poor uniformity, poor plasticity and ductility, and difficult processing of electrical contact materials, and achieve stable structure and improved electrical conductivity. , Excellent effect of preparation environment

Active Publication Date: 2016-08-24
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to AgSnO 2 The plasticity and ductility of the material are poor, which makes the processing extremely difficult. It is not easy to deform and break the wire during the production process. AgSnO prepared by traditional preparation methods such as: melting casting method, chemical co-precipitation method, mechanical powder mixing method, etc. 2 The uniformity of electrical contact materials is poor and the hardness is low. At present, my country's electrical contact materials are in the stage of upgrading and conforming to international standards. The development of new electrical contact materials and their manufacturing processes is crucial to promoting the development of my country's environment-friendly electrical contact materials. of great significance

Method used

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  • a kind of agsno <sub>2</sub> Preparation method of multi-core composite wire

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment includes the following steps:

[0031]Step 1, put the tin bar into the first silver sheath to obtain a single-core composite sheath; the mass content of the tin bar in the single-core composite sheath is 89.7%, and the balance is silver; the mass content of the tin bar The purity is 99.95%, the cross-sectional diameter is 39 mm, the outer diameter of the first silver sheath is 45.0 mm, and the inner diameter is 40.0 mm;

[0032] Step 2, using a vacuum electron beam welder to respectively carry out vacuum electron beam welding to the two ends of the single-core composite sheath described in step 1;

[0033] Step 3, heat-extrude the single-core composite sheath welded and sealed in step 2 for 6 hours at a temperature of 150° C. to obtain a single-core composite rod with a cross-sectional diameter of 14.36 mm; The extrusion ratio of the extrusion treatment is 9.8;

[0034] Step 4. The single-core composite rod described in step 3 is drawn for 43 passes to...

Embodiment 2

[0043] This embodiment includes the following steps:

[0044] Step 1, put the tin rod into the first silver sheath to obtain a single-core composite sheath; the mass content of the tin rod in the single-core composite sheath is 82.3%, and the balance is silver; the mass content of the tin rod The purity is 99.95%, the cross-sectional diameter is 28 mm, the outer diameter of the first silver sheath is 32.0 mm, and the inner diameter is 30.0 mm;

[0045] Step 2, using a vacuum electron beam welder to respectively carry out vacuum electron beam welding to the two ends of the single-core composite sheath described in step 1;

[0046] Step 3, heat-extrude the single-core composite sheath welded and sealed in step 2 for 4 hours at a temperature of 200° C. to obtain a single-core composite rod with a cross-sectional diameter of 10.67 mm; The extrusion ratio of the extrusion treatment is 9;

[0047] Step 4. The single-core composite rod described in step 3 is drawn 36 times to obtai...

Embodiment 3

[0055] This embodiment includes the following steps:

[0056] Step 1, put the tin rod into the first silver sheath to obtain a single-core composite sheath; the mass content of the tin rod in the single-core composite sheath is 90.7%, and the balance is silver; the mass content of the tin rod The purity is 99.95%, the cross-sectional diameter is 27 mm, the outer diameter of the first silver sheath is 33.0 mm, and the inner diameter is 30.0 mm;

[0057] Step 2, using a vacuum electron beam welder to respectively carry out vacuum electron beam welding to the two ends of the single-core composite sheath described in step 1;

[0058] Step 3, heat-extrude the single-core composite sheath welded and sealed in step 2 for 2 hours at a temperature of 220° C. to obtain a single-core composite rod with a cross-sectional diameter of 11.22 mm; The extrusion ratio of the extrusion treatment is 8.65;

[0059] Step 4. The single-core composite rod described in step 3 is drawn 48 times to ob...

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Abstract

The invention discloses a preparation method of an AgSnO2 multi-core composite wire rod. The method comprises the following steps: step 1, preparing a single-core composite sheath; step 2, soldering and sealing; step 3, carrying out hot extrusion treatment; step 4, drawing and acquiring a single-core composite wire rod; step 5, straightening, sizing, cutting off, carrying out acid pickling and drying; step 6, bundling and assembling the single-core composite wire rod, repeating processing technologies of the step 2, the step3 and the step 4 and acquiring a n-core composite wire rod; step 7, bundling and assembling the n-core composite wire rod, repeating the processing technologies of the step 2, the step3 and the step 4 and acquiring a n2-core composite wire rod; step 8, bundling and assembling the n2-core composite wire rod, carrying out the hot extrusion treatment and acquiring a n3-core composite wire rod whose cross section is round; step 9, drawing and acquiring the AgSnO2 multi-core composite wire rod. Through multiple times of bundling and assembling processes, uniform distribution of core threads and stability of an organization structure in the AgSnO2 multi-core composite wire rod are realized. An average size of the core threads is about dozens of nanometers. Combined with the heat treatment, a good Ag / SnO2 interface combination effect is formed.

Description

technical field [0001] The invention belongs to the technical field of electrical contact material processing, in particular to an AgSnO 2 A method for preparing a multi-core composite wire. Background technique [0002] Silver and silver alloys have become the leading materials for electrical contact materials due to their excellent electrical conductivity, good processability and oxidation resistance. Because the hardness of pure silver electrical contact material is not high, the melting point is low and the wear resistance is poor, if it has a vulcanization tendency under the action of high current, and it is easy to weld, so silver alloy is often used instead of pure silver as the electrical contact material. Adding a small amount of other elements (such as Cu, Cd, Pd, Zn, Mg, In, V, As and other metals and their metal oxides) to the electrical contact material can overcome the defects of pure silver electrical contact materials and improve the mechanical properties of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00
Inventor 王鹏飞梁明徐晓燕焦高峰段颖李成山
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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