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Cleaning environment-friendly type copper-base contact material for low-voltage electrical apparatus and its contact preparing method

A clean, environmentally friendly, low-voltage electrical technology, applied in contacts, circuits, electrical switches, etc., can solve the problems of poor high temperature performance, short electrical life, poor anti-oxidation performance, etc., and achieve the effect of good anti-oxidation performance and long electrical life.

Active Publication Date: 2006-05-03
浙江帕特尼触头有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the contact material widely used at home and abroad is silver-based material, and the cost is high
Although there are some copper-based contact materials, their oxidation resistance is poor and their electrical life is short
The main reason for the analysis is that the high temperature performance of the material is poor, and the added anti-breaking ability is unstable under the action of the arc, and it is easy to decompose or react with oxygen (such as carbon, carbide, ordinary oxide) and then form a common oxide with copper. Thereby making the contact material fail during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A clean and environment-friendly copper-based contact material for low-voltage electrical appliances: its material composition ratio is (weight percent): 5% of dysprosium trioxide, 0.15% of lanthanum, 0.15% of zirconium, and the balance of copper.

[0028] Contacts are prepared as follows:

[0029] 1. Disperse dysprosium trioxide powder, add copper powder and copper alloy powder of lanthanum and zirconium in proportion, and mix evenly in the powder mixer.

[0030] 2. Press the billet into a billet of appropriate size according to the requirements on the press.

[0031] 3. Put the ingot into a protective atmosphere furnace for sintering at 850°C-1100°C.

[0032] 4. Recompress the billet on the press, and the recompressed density should be greater than or equal to 95% of the theoretical density.

[0033] 5. Extrude the ingot into a sheet or wire of a specified size on an extruder, with an extrusion temperature of 600°C-900°C and an extrusion ratio of 10-40.

[0034] 6....

Embodiment 2

[0038] A clean and environment-friendly copper-based contact material for low-voltage electrical appliances: its material composition ratio is (weight percent): 10% of dilanthanum trioxide, 1.5% of lanthanum, 0.15% of silicon, and the balance of copper.

[0039] Contacts are prepared as follows:

[0040] 1. Add internally oxidized copper lanthanum trioxide powder, copper powder and copper alloy powder of lanthanum and silicon in proportion, and mix them evenly in the powder mixer.

[0041] 2. Press the billet into a billet of appropriate size according to the requirements on the press.

[0042] 3. Put the ingot into a protective atmosphere furnace for sintering at 850°C-1100°C.

[0043] 4. Recompress the billet on the press, and the recompressed density should be greater than or equal to 95% of the theoretical density.

[0044] 5. Extrude the ingot into a sheet or wire of a specified size on an extruder, with an extrusion temperature of 600°C-900°C and an extrusion ratio of ...

Embodiment 3

[0049] A clean and environmentally friendly copper-based contact material for low-voltage electrical appliances: its material composition ratio is (weight percent): rare earth oxide containing 7.5% of lanthanum, dysprosium, yttrium, europium, ytterbium, holmium, and cerium, 0.1% of aluminum, 0.15% of silicon, and 0.5% of mixed rare earth %, copper balance.

[0050] Contacts are prepared as follows:

[0051] 1. Add internally oxidized copper oxide rare earth powder, copper powder and copper alloy powder with the third phase in proportion, and mix them evenly in the powder mixer.

[0052] 2. Press the billet into a billet of appropriate size according to the requirements on the press.

[0053] 3. Put the ingot into a protective atmosphere furnace for sintering at 850°C-1100°C.

[0054] 4. Recompress the billet on the press, and the recompressed density should be greater than or equal to 95% of the theoretical density.

[0055] 5. Extrude the ingot into a sheet or wire of a spec...

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Abstract

The invention relates to a low-voltage electrical apparatus used cleanliness environment-friendly type copper touching bar material and the method for preparing the touching point. The material forming (by weight ratio) is that the first phase conducting core is copper allowance, the second phase anti-analyzing material is pure rear-earth oxide or mixed rear-earth oxide 0.1%-0.5%, the third phase blending agent is anti-oxidant and arc blow-out function alloy elements 0-5úÑ.

Description

1. Technical field [0001] The invention relates to a copper-based contact material and a contact preparation method thereof, in particular to a copper-based contact material for low-voltage electrical appliances and a contact preparation method thereof. 2. Background technology [0002] Contact materials are the key materials of various switches, relays, contactors and other electrical appliances, which play the role of connecting, breaking and transmitting current. At present, the contact material widely used at home and abroad is silver-based material, and the cost is high. Although there are some copper-based contact materials, their oxidation resistance is poor and their electrical life is short. The main reason for the analysis is that the high temperature performance of the material is poor, and the added anti-breaking ability is unstable under the action of the arc, and it is easy to decompose or react with oxygen (such as carbon, carbide, ordin...

Claims

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Application Information

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IPC IPC(8): H01H1/021
Inventor 陈少贤
Owner 浙江帕特尼触头有限公司
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