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Method for continuously extruding and compositing laminar composite electric contact material

An electrical contact material and layered composite technology, which is applied in the direction of metal extrusion control equipment, metal extrusion, metal processing equipment, etc., to achieve uniform structure and performance, improve composite interface quality, and good smoothness

Active Publication Date: 2013-09-18
WENZHOU HONGFENG ELECTRICAL ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processes are not suitable for the preparation of layered composite electrical contact materials

Method used

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  • Method for continuously extruding and compositing laminar composite electric contact material
  • Method for continuously extruding and compositing laminar composite electric contact material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In Example 1, the operation steps for preparing the mosaic layered composite element by using the continuous extrusion composite technology are as follows:

[0026] I), the material composition of the layered composite electrical contact

[0027] The material composition of the laminated composite electrical contact is mainly pure silver and pure copper, in which the width of the silver strip is 4mm×1mm, and the width of the special-shaped copper strip is 10mm×4mm.

[0028] II)、Continuous extrusion compound equipment and mould

[0029] The contact element is a double-layer inlaid composite, therefore, a single-wheel continuous extrusion composite machine is used to prepare the layered composite electrical contact material. The extrusion die material designed according to the contact element is H13 steel (ie 4Cr5MoSiV1), and the main parameters of the die structure are as follows:

[0030] Diversion angle

Compound deformation zone length

Sizing belt length

45°

5mm

5mm

...

Embodiment 2

[0038] The difference from Example 1 is that: Example 2 uses silver-based composite electrical contact material AgNi10 and pure copper metal as raw materials, and performs partial surface-to-surface composite through continuous extrusion composite to prepare a layered composite contact material.

[0039] The basic operation steps for preparing the layered composite electrical contact in Example 2 are as follows:

[0040] I), the material composition of the layered composite electrical contact

[0041] The material composition of the laminated composite electrical contact is mainly AgNi10 and copper. The width of the AgNi10 strip is 4mm×2mm, and the width of the copper strip is 10mm×5mm. The shape and size of AgNi10 and copper strip are relatively accurate, and the surface cleanliness is also better.

[0042] II)、Continuous extrusion compound equipment and mould

[0043] The contact is partially double-sided. Therefore, the single-wheel continuous extrusion compound machine is used to p...

Embodiment 3

[0052] The difference from Example 1 is that: Example 3 uses silver alloy and iron metal as raw materials, and performs surface-to-surface composite through continuous extrusion composite to prepare a layered composite contact material.

[0053] The basic operation steps for preparing the layered composite electrical contact contact of Example 3 are as follows:

[0054] I), the material composition of the layered composite electrical contact

[0055] The material components of the laminated composite electrical contact are mainly silver alloy and iron metal. The width and thickness of the silver alloy strip is 10mm×2mm, and the width and thickness of the iron strip is 10mm×5mm. The shapes and sizes of the silver alloy and the iron metal strip are compared. Accurate, surface cleanliness is also good.

[0056] II)、Continuous extrusion compound equipment and mould

[0057] The contact is double-sided, so the single-wheel continuous extrusion laminating machine is used to prepare the layer...

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Abstract

The invention relates to a method for continuously extruding and compositing a laminar composite electric contact material. The method comprises the following steps of: firstly, selecting precious-cheap metal combination, pretreating, and compositing a precious metal blank with a cheap metal blank in the sate of semi-fusion under the drive of a frictional force of an extruding wheel to obtain a composite product with high interface combination quality, so as to obtain a required electric connect component. After the method provided by the invention is used, the laminar compositing of the electric contact material can be realized according to the continuously extruding and compositing, so that the precious metal can be saved, the combination property of the material can be further improved, the product with high interface combination quality and high size precision can be produced, and the serialization, the short technological process and the near net shape can be further realized; therefore, the method is novel and used for preparing the laminar composite electric contact material.

Description

Technical field [0001] The invention relates to a preparation technology of a layered composite electrical contact material of precious and cheap metals, specifically, it is a method for producing a layered composite electrical contact material of expensive and cheap dissimilar metals by using continuous extrusion composite technology to compound double or multilayer metal materials method. Background technique [0002] Cost reduction is an important part of the current electrical contact material industry. For this reason, two-layer or multi-layer contact materials have become a hot spot in people's research due to their small amount of precious metals, good overall performance, and low price. In recent years, the United Kingdom, Japan, Germany and other countries have vigorously carried out research on composite technology and multi-layer technology. At present, the methods of manufacturing layered composite electrical contact materials mainly include rolling composite, explo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/22B21C29/00B21C31/00
Inventor 陈乐生刘伟利陈晓孙增耀祁更新
Owner WENZHOU HONGFENG ELECTRICAL ALLOY
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