Chromium bronze alloy material and preparation method thereof

A technology of bronze alloy and copper rod, which is applied in the field of chromium bronze alloy materials and its preparation, can solve the problems of poor elastic recovery ability, influence on power development, large grain size, etc., and achieve good elastic recovery ability, long service life, crystal Effects of Small Granularity

Inactive Publication Date: 2010-06-02
甘肃大鑫铜业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, all kinds of chromium bronze alloys sold on the market have good electrical conductivity, and are the excellent materials for making electrodes and commutators in the electrical industry. However, with practical applications, the current products have poor elastic recovery ability and large grain size. The biggest defect of the material seriously affects the development of electric power

Method used

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  • Chromium bronze alloy material and preparation method thereof
  • Chromium bronze alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Choose No. 1 electrolytic copper 1000 kg, chromium 10 kg, tin 2 kg, titanium 1 kg, and rare earth 0.6 kg into a 1 ton intermediate frequency electric furnace for smelting. The electric furnace power is 500 kilowatts and the smelting temperature is 1340 ℃. The electrolytic copper is first melted to form liquid metal. , Then add chromium, tin, titanium and rare earth to homogenize and stir, check the chemical composition, and adopt semi-automatic continuous vibration casting. The casting temperature is 1280℃, the casting speed is 4.6m / h, and the casting water pressure is 0.5kg at the beginning. / cm 2 , 1.0kg / cm in normal 2 , Forging into a copper ingot with a specification of Ф145×L (mm), and then covering the copper ingot with dry soot as a covering agent to prevent oxidation, and then sawing with a 350mm band saw, and sawing into a semi-finished product with a specification of Ф175×L mm For copper ingots, put the semi-finished copper ingots into a 500-kilowatt intermediat...

Embodiment 2

[0062] Choose 900 kilograms of No. 1 electrolytic copper, 9 kilograms of chromium, 1.8 kilograms of tin, 0.9 kilograms of titanium, and 0.05 kilograms of rare earths into a 1 ton intermediate frequency electric furnace for smelting. The electric furnace power is 500 kilowatts and the melting temperature is 1340 ℃. , Then add chromium, tin, titanium and rare earth to homogenize and stir, check the chemical composition, and adopt semi-automatic continuous vibration casting. The casting temperature is 1280℃, the casting speed is 4.6m / h, and the casting water pressure is 0.5kg at the beginning. / cm 2 , 1.0kg / cm in normal 2 , Forging into a copper ingot with a specification of Ф175×L (mm), and then covering the copper ingot with dry soot as a covering agent to prevent oxidation, and then sawing with a 350mm band saw, and sawing into a semi-finished product with a specification of Ф175×L mm For copper ingots, put the semi-finished copper ingots into a 500-kilowatt intermediate frequen...

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Abstract

The invention discloses a chromium bronze alloy material and a preparation method thereof. The chromium bronze alloy material consists of chromium, tin, titanium, 0.006 to 0.012 percent of rare earth and 98.518 to 99.394 percent of copper. The preparation method for the chromium bronze alloy material comprises the manufacturing steps of batching, smelting, casting, extruding, stretching, straightening and finished product inspection and detection. Through the chromium bronze alloy material and the preparation method thereof, the prepared chromium bronze alloy material has good elastic recovery capability and smaller grain size; and because of the adoption of an advanced process method in the process, the quality of the chromium bronze alloy material is greatly improved, and meanwhile the service life of processing equipment is prolonged.

Description

Technical field [0001] The invention belongs to the field of alloy material manufacturing, and particularly relates to a chromium bronze alloy material and a preparation method thereof. Background technique [0002] Chrome bronze alloy is a contact element widely used in the fields of high voltage, ultra high voltage, and UHV power. Since 2007, my country has entered the "golden year" of UHV construction. It is expected that my country will arrive in the "Eleventh Five-Year" period. At the beginning of the "Twelfth Five-Year Plan" period, my country will build a double-circuit million-volt transmission channel running through the north and south, and build 20 million-volt substations, which will greatly promote the development of the alloy manufacturing industry. At present, various chromium bronze alloys sold on the market have good electrical conductivity and are excellent materials for making electrodes and commutators in the electrical industry. However, with practical applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00B22D11/16C22F1/08
Inventor 周尚智张玉武郝发强朱志良张静包仲奇
Owner 甘肃大鑫铜业有限责任公司
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