High elasticity and high conductivity beryllium-free copper alloy material and processing technique

Abstract

The invention provides a high-elasticity high-conductivity beryllium-free copper alloy material and a machining process thereof. The alloying components in weight percentage of the material are divided into two groups as follows: (1) determined components: 90 to 97 percent of Cu, 1.8 to 7.0 percent of Ni, 0.20 to 1.8 percent of Si, 0.20 to 0.40 percent of Zn, and the balance being inevitable impurities, wherein the sum of the weight percentages of the alloying components is 100 percent; and (2) mutually replaceable components: 0.05 to 0.30 percent of Mg or 0.05 to 0.20 percent of Al, 0.05 to 2 percent of Cr or 0.05 to 2 percent of Ti or less than or equal to 0.5 percent of B or 0.05 to 0.2 percent of P or less than or equal to 0.3 percent of one or more than one among La, Ce and Nd, and the balance being inevitable impurities, wherein the sum of the weight percentages of the alloying components is 100 percent. A process flow adopts the following working procedures of proportioning, melting, casting, heating, hot-rolling, dissolving solids, milling surface, blooming, thermally treating deformation, finishing, checking and packaging. The machine process is characterized in the working procedures of proportioning, melting-casting, heating, dissolving solids and thermally treating deformation.

Description

technical field [0001] The invention belongs to the field of nonferrous metal processing, and in particular relates to a high-elasticity and high-conductivity beryllium-free copper alloy material and a processing technology. Background technique [0002] Beryllium bronze 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 bronze are relatively low It is an important elastic copper alloy material with the best comprehensive performance. However, the strength required by beryllium bronze must be obtained through aging heat treatment, and the consistency of aging treatment is poor, and the material becomes brittle when it is not handled properly; the stress release generated during long-term storage of the product causes changes in the performance parameters of elastic...

AI Technical Summary

Problems solved by technology

However, the strength required by beryllium bronze must be obtained through aging heat treatment, and the consistency of aging treatment is poor, and the material becomes brittle when it is not handled properly; the stress release generated during long-term storage of the product causes changes in the performance parameters of elastic components, which cannot meet reliable contact requirements. And the requirements of the specified life; from the perspective of environmental protection, the smoke, vapor and dust of beryllium and its compounds are harmful to human health; in addition, the price of beryllium is expensive, which makes the production cost of beryllium bronze higher, and only high-end products will be considered. , so its production and use are greatly restricted