High-intensity creep-resistant and low-copper alloy material and application thereof

A copper alloy, creep-resistant technology, applied in metal/alloy conductors, contact parts, etc., can solve the problems of less than 25%, high level, shortage of copper resources, etc., and achieve good plasticity, creep resistance improvement, and excellent creep resistance. The effect of changing performance

Active Publication Date: 2014-10-01
NINGBO POWERWAY ALLOY MATERIAL
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Problems solved by technology

Although the demand for copper is strong, there is a serious shortage of copper resources in my country, the domestic resource supply rate is less than 25%, and copper prices continue to remain high
Although the zinc alloys given by the above two patents have certain creep resistance properties, their strengths are only 280MPa and 230MPa respectively, which are far from meeting the needs of replacing brass.

Method used

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  • High-intensity creep-resistant and low-copper alloy material and application thereof
  • High-intensity creep-resistant and low-copper alloy material and application thereof
  • High-intensity creep-resistant and low-copper alloy material and application thereof

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] 25 example alloys and 2 comparative alloys were selected (comparative example 1 was alloyed according to ZL201010246298.6, and comparative example 2 was alloyed according to ZL201010245802.0), and the same process was used to process them into Ф11.3 Finished products: cast slabs are made by continuous casting or die casting, hot extruded into rods at a temperature of 180°C-380°C, and finally finished by cold drawing to make a finished product of Ф11.3.

[0026] The SEM picture of the typical as-cast state structure of the low copper alloy material of the present invention is as figure 1 (×600) and figure 2 As shown in (×2500), the as-cast structure contains matrix Zn, equiaxed chrysanthemum CuZn 5 Zn-Cu-Ti-Mg-Mn compound of phase and ribbon network, the energy spectrum analysis result of Zn-Cu-Ti-Mg-Mn compound is as follows image ...

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Abstract

The invention discloses a high-intensity creep-resistant and low-copper alloy material. The material comprises the following components in percentage by weight: 4 to 10wt% of Cu, 0.01 to 0.5wt% of Mg, 0.01 to 2.0wt% of Mg, 0.01 to 1.0wt% of Ti, and the balance of Zn and inevitable impurities; and the phase composition of an as-cast structure of the low-copper alloy material includes a substrate Zn, an equiaxial chrysanthemum shaped CuZn5 phase and a belt-shaped network type Zn-Cu-Ti-Mg-Mn compound. The alloy is outstanding in creep resisting performance, the creeping rate reaches (1.18-8.87)*10<-6>s<-1>, the elongation is 10 to 20%, the tensile strength is 400-550MPa, and the hardness HV5 is 100 to 150 under the conditions that the temperature is 100 DEG C and the creeping loading stress is 100MPa. The alloy can be used as a substitute of lead brass in the communication connector industry, and can also be applied to other industries to replace some copper alloy parts.

Description

technical field [0001] The invention relates to the technical field of low-copper alloy materials, in particular to a high-strength, creep-resistant low-copper alloy material and its application. The alloy material can be used in the communication connector industry. Background technique [0002] Copper and copper alloys are one of the most widely used non-ferrous metals, accounting for more than half of the amount used in the electrical and electronic industry. Although the demand for copper is strong, there is a serious shortage of copper resources in my country, the supply rate of domestic resources is less than 25%, and copper prices continue to remain high. Moreover, the copper content of copper alloys is relatively high, generally above 55%, and the price of copper raw materials usually accounts for 85-90% of the selling price of copper alloys. Therefore, copper prices have a serious impact on the capital flow of copper processing enterprises and the relationship betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/02H01B1/02H01R13/03
CPCC22C18/02H01B1/02H01R13/03
Inventor 孙文声陈永力许丁洋周宏渤张明
Owner NINGBO POWERWAY ALLOY MATERIAL
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