Copper/rare-earth oxide/carbon contact and method for producing same

A technology of rare earth oxides and production methods, which is applied in the direction of contact materials, etc., can solve the problems of weak anti-oxidation and anti-arc burning ability, affecting the promotion and application of copper-based contacts, and high production costs of silver-based contacts. Anti-oxidation ability, good effect, and stable contact resistance

Active Publication Date: 2005-03-16
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

However, the production cost of silver-based contacts is high, and my country is a big country short of silver. Therefore, it is an inevitable development trend to research and develop copper-based contacts to replace silver-based contacts.
At present, there are many types of copper-based contact materials produced, but they all have their limitations. The main disadvantage is that the ability to resist oxidation and arc burnout is weak, which affects the popularization and application of copper-based contacts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A copper / rare earth oxide / carbon contact, the composition ratio of its material is (weight percent): carbon 2.0, diytterbium trioxide 15, tin 1.0, cadmium 1.0, copper balance.

[0036] Its production steps are as follows:

[0037] (1) Preparation of electroplating solution: preparation of 10 liters of electroplating solution—cyanide copper plating solution needs to be prepared under ventilated conditions. When preparing, weigh 1400 grams of potassium cyanide and dissolve it in warm water, weigh 1000 grams of cuprous cyanide and slowly add it to the potassium cyanide solution under constant stirring, and control the temperature so that the temperature of the solution will not rise above 60 °C . Weigh 40g of potassium hydroxide and dissolve in distilled water. After both are dissolved, they are miscible with each other. Add water to the specified liquid level and stir, filter, analyze and adjust before use.

[0038](2) Electroplating: passivate the 0.5-1.0mm stainless...

Embodiment 2

[0045] A copper / rare earth oxide / carbon contact, the composition ratio of its material is (weight percent): carbon 0.1, diytterbium oxide 0.1, zirconium 0.02, cadmium 0.02, aluminum 0.01, tin 0.02, lanthanum 0.02, copper quantity.

[0046] Its production steps are as follows:

[0047] (1) Powder mixing: mix Dy 2 o 3 After dispersing C and C in an ultrasonic device with alcohol, add it to the weighed 200-mesh electrolytic copper powder, stir while adding, and perform initial mixing, then mix in the powder mixer for 2 hours, pour it out and carry out wet powder passing through 100 Mesh sieve, then add zirconium cadmium aluminum tin lanthanum copper alloy powder, mix in the powder mixer for 2 hours, pour it out and dry it in an oven at 60-80°C, pass through an 80-mesh sieve for later use;

[0048] (2) Compression: select the appropriate mold to press into the corresponding workpiece, the pressing density is 7.15 ~ 7.25g / cm 3 ;

[0049] (3) Initial firing: Mix the workpiece w...

Embodiment 3

[0053] A copper / rare earth oxide / carbon contact, the composition ratio of its material is (weight percent): carbon 1.0, samarium trioxide 8.0, zirconium 0.05, cadmium 0.2, aluminum 0.05, tin 0.05, lanthanum 0.05, copper surplus quantity.

[0054] Its production steps are as follows:

[0055] (1) Powder mixing: mix Sm 2 o 3 After dispersing C and C in an ultrasonic device with alcohol, add it to the weighed 200-mesh electrolytic copper powder, stir while adding, and perform initial mixing, then mix in the powder mixer for 2 hours, pour it out and carry out wet powder passing through 100 Mesh sieve, then add zirconium cadmium aluminum tin lanthanum copper alloy powder, mix in the powder mixer for 2 hours, pour it out and dry it in an oven at 60-80°C, pass through an 80-mesh sieve for later use;

[0056] (2) Ingot making:

[0057] a. Cold isostatic ingot pressing: put the powder evenly in a rubber sheath, seal it and press it in a cold isostatic press with a pressing pressure...

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Abstract

A copper / rare earth oxide / carbon aontact, whose material composite ratio(mass percentage) is: carbon 0.1-2.0, ytterbium trioxide or samarium trioxide 0.1-15, alloy 0.05-2.0 and copper the other, uses method of powder metallurgy and electroplating sediment to produce and the contact produced has excellent resistance to oxidation and electric arc burnt.

Description

1. Technical field [0001] The invention relates to a copper-based contact used in low-voltage electrical appliances such as contactors and circuit breakers and a production method thereof. 2. Background technology [0002] In the field of low-voltage electrical appliances, contacts are often made of silver-based materials, such as silver / nickel contact materials, silver / oxide contact materials, silver / carbon contact materials, etc. However, the production cost of silver-based contacts is high, and my country is a big country short of silver. Therefore, it is an inevitable development trend to research and develop copper-based contacts to replace silver-based contacts. At present, there are many types of copper-based contact materials produced, but they all have their limitations. The main disadvantage is that the resistance to oxidation and arc burnout is weak, which affects the popularization and application of copper-based contacts. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00H01H1/02
Inventor 陈少贤陈克
Owner 浙江帕特尼触头有限公司
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