High-elasticity stress relaxation-resistant beryllium-copper alloy and its preparation and processing method

A technology of beryllium copper alloy and processing method, applied in the field of high elastic stress relaxation resistance beryllium copper alloy and its preparation and processing, can solve the problems affecting safety, reliability, stress relaxation of alloy materials, etc., and achieve high fatigue resistance, resistance to The effect of good heat and good electrical conductivity
CN102899518AInactive Publication Date: 2013-01-30有研科技集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
有研科技集团有限公司
Publication Date
2013-01-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-elasticity stress relaxation-resistant beryllium-copper alloy and its preparation and processing method. The alloy comprises the following basic components by mass: 0.2-0.7% of Be, 0.5-2.0% of Co, 0.2-2.0% of Ni, and the balance Cu. The components of the copper alloy need to satisfy that: (a) the total content of Ni and Co is greater than or equal to 0.7% and less than or equal to 4%; and (b) the ratio of the sum of Ni and Co to Be is greater than or equal to 2 and less than or equal to 7. The preparation and processing method consists of: a. batching according to the mass percentage, charging, smelting and casting; b. surface milling; c. hot rolling; d. solid solution treatment; e. first cold rolling; f. first aging; g. second cold rolling; and h. second aging. The copper alloy provided in the invention has tensile strength sigmaB of 600-800MPa, plastic elongation delta of 4-10%, and electric conductivity of 35-50%IACS, and can be widely used in various elastic reeds, electrical contacts, spot welding poles, explosion-proof tools, electrical contact components, plug-in components and other occasions.
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Description

technical field

[0001] The invention relates to a highly elastic stress-relaxation-resistant beryllium copper alloy and a preparation and processing method thereof, belonging to the field of nonferrous metal processing. Background technique

[0002] Beryllium copper has high elasticity, strength, and excellent thermal conductivity, electrical conductivity, corrosion resistance, wear resistance, and fatigue resistance. The elastic hysteresis, elastic aftereffect, and elastic incompleteness of elastic elements made of beryllium copper are relatively low It is an important elastic copper alloy material with the best comprehensive performance. In particular, the characteristics of fatigue resistance and no sparks during impact are unmatched by other conductive elastic materials, and can be called the "ace card" of conductive elastic materials. Therefore, it is widely used to manufacture elastic components in electronics, electricity, communications, instruments, meters, telecom...

Claims

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