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Copper-tin composite material preparation process

A composite material and preparation technology, applied in the direction of cleaning methods using liquids, cleaning methods and appliances, roller electrodes, etc., can solve problems such as poor conductivity, easy damage of copper-tin composite materials, and reduced service life, and achieve accurate positioning , 100% welding, improve conductivity and service life

Active Publication Date: 2021-09-28
东莞市中一合金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two welding methods have the following disadvantages: for the copper-tin composite material obtained by resistance welding, the welding area of ​​the copper strip and the tin strip can only reach 80%, and the copper strip and the tin strip cannot be 100% welded together. Increasing the welding pressure, time, etc. to increase the welding area of ​​copper strip and tin strip will cause obvious deformation of the finished product (such as figure 1 As shown, the label 1 refers to the copper strip, and the label 2 refers to the tin strip), which leads to the copper-tin composite material not only has high resistance (that is, poor conductivity), but also has poor bonding force between the copper strip and the tin strip, and the service life of the copper-tin composite material is low. The welding method of high-temperature welding, the copper strip and the tin strip are directly placed in the high-temperature furnace without any positioning device. During the high-temperature welding process, the copper strip and the tin strip are prone to offset, and the final copper-tin composite There is misalignment between the copper and tin strips (such as figure 2 As shown, the label 1 refers to the copper strip, and the label 2 refers to the tin strip), which causes the copper-tin composite material to be easily damaged when used in a switch or a temperature controller, greatly reducing the service life and having a certain impact on the electrical conductivity

Method used

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  • Copper-tin composite material preparation process
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  • Copper-tin composite material preparation process

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preparation example Construction

[0037] A kind of preparation technology of copper-tin composite material of the present invention, such as Figure 4 shown, including the following steps in order:

[0038] (1) Select copper strip 1 and tin strip 2 as raw materials

[0039] The tin strip 2 selected in the present invention has a width of 1-10 mm and a thickness of 0.1-2 mm; a copper strip 1 has a width of 1-100 mm and a thickness of 0.2-2 mm. In the actual production process, copper strips 1 and tin strips 2 of appropriate sizes can be selected according to needs.

[0040] (2) Ultrasonic degreasing, water rinsing and drying

[0041] In the present invention, the current for ultrasonic degreasing of tin strip 2 is 0.5A-3.2A, and the drying temperature after rinsing with clear water is 45-70°C; The drying temperature is 45 ~ 70 ℃. The current and time of ultrasonic degreasing, drying temperature and time can be selected appropriately, as long as the tin strip and copper strip can be cleaned.

[0042] (3) Un...

Embodiment 1

[0059] A kind of preparation technology of copper-tin composite material, such as Figure 4 shown, including the following steps in order:

[0060] Select a tin strip 2 with a width of 5mm and a thickness of 1mm, and a copper strip 1 with a width of 50mm and a thickness of 1.2mm as raw materials;

[0061] Ultrasonic degreasing is performed on the tin strip 2 with a current of 1.5A, and the drying temperature after rinsing with clean water is 60°C; the current for ultrasonic degreasing of copper strip 1 is 4A, and the drying temperature after rinsing with clean water is 55°C;

[0062] Place the cleaned tin strip 2 on the tin strip unwinding machine, place the cleaned copper strip 1 on the copper strip unwinding machine, and then adjust the tension of the tin strip 2 and the copper strip 1 through the tension wheel, wherein the tin strip tension wheel 3 Control the tension of the tin strip 2 to 3N, and the copper strip tension wheel 4 controls the tension of the copper strip 1 ...

Embodiment 2

[0069] A kind of preparation technology of copper-tin composite material, such as Figure 4 shown, including the following steps in order:

[0070] Select a tin strip 2 with a width of 1mm and a thickness of 0.1mm, and a copper strip 1 with a width of 1mm and a thickness of 0.2mm as raw materials;

[0071] Ultrasonic degreasing is performed on tin strip 2 with a current of 0.5A, and the drying temperature after rinsing with clean water is 45°C; the current for ultrasonic degreasing of copper strip 1 is 1.0A, and the drying temperature after rinsing with clean water is 45°C;

[0072] Place the cleaned tin strip 2 on the tin strip unwinding machine, place the cleaned copper strip 1 on the copper strip unwinding machine, and then adjust the tension of the tin strip 2 and the copper strip 1 through the tension wheel, wherein the tin strip tension wheel 3 Control the tension of the tin strip 2 to 1N, and the copper strip tension wheel 4 controls the tension of the copper strip 1 t...

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Abstract

The invention relates to the technical field of metal composite material preparation, in particular to a copper-tin composite material preparation process which comprises the steps of raw material selection, deoiling and cleaning, discharging, positioning, electric resistance welding, high-temperature welding, cooling, shaping and rolling. The preparation process can guarantee accurate copper strip and tin strip positioning, realizes 100% welding, avoids the problems of deformation and the like, obviously improves the conductivity and the service life of the copper-tin composite material.

Description

technical field [0001] The invention relates to the technical field of metal composite material preparation, in particular to a preparation process of copper-tin composite material. Background technique [0002] Metal composite materials refer to the composite materials formed by metallurgical bonding of various metals with different chemical and mechanical properties on the interface by using composite technology, which greatly improves the thermal expansion, strength, fracture toughness, impact toughness, and durability of single metal materials. Abrasiveness, electrical properties, magnetic properties and many other properties are widely used in petroleum, chemical, shipbuilding, metallurgy, mining, machinery manufacturing, electric power, water conservancy, transportation, environmental protection, pressure vessel manufacturing, food, brewing, pharmaceuticals and other industries field. [0003] Copper-tin composite materials are often used in switches or temperature co...

Claims

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Application Information

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IPC IPC(8): B21C37/02B21D1/02B08B3/12B23K11/30
CPCB21C37/02B21D1/02B08B3/12B23K11/3036
Inventor 游浩东陈进亿
Owner 东莞市中一合金科技有限公司