Recombination line

Abstract

The invention relates to a composite wire which includes a core material and a surface metal layer. The alloy composition of the core material is (weight percentage): 59.0 to 65.0 percent of copper and 0.005 to 0.1 percent of other elements, the other elements include titanium, iron, silicon, tin, phosphorus, two elements in the rare earth metal, the content of unavoidable impurity is less than 0.3 percent and the rest is zinc, wherein, the content of lead, bismuth and antimony in the unavoidable impurity is less than 0.05 percent; the alloy composition of the metal surface layer is (weight percentage): 48.0 to 52.0 percent of copper, 0 to 0.4 percent of rare earth, 0 to 0.2 percent of silver, the content of unavoidable impurity elements is less than 0.3 percent and the rest is zinc. The mechanical property of the composite wire is improved, which is helpful to cut materials with high hardness and the cut materials have good surface smoothness; the washing effect during discharging is improved and the cutting speed and the surface quality of cutting workpieces are improved.

Description

technical field [0001] The present invention relates to a composite wire. Background technique [0002] The development of the mechanical processing industry is inseparable from the development of high-precision machining technology. The development and application of a new processing method is inseparable from the simultaneous improvement of efficiency and quality. Slow-moving wire EDM is a part of mechanical processing. In recent years, with the development of machining technology, it has also been advanced by leaps and bounds. The development of slow wire cutting technology is inseparable from the simultaneous development of wire electrode technology. The design concept of slow wire machine tools popular in the world is based on the performance of electrode wire, and the breakthrough of electrode wire technology often drives A revolution in wire cutting machine design. From the initial use of oxygen-free copper wire cutting to the current composite wire cutting, the dev...

AI Technical Summary

Problems solved by technology

However, because the core material is oxygen-free copper or ordinary brass, its toughness and tensile strength will be limited, and the copper and zinc annealed on the surface will also affect special processing due to the limitation of electrical conductivity.

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