Cutting wire for low-magnesium unidirectional wire running and manufacturing method thereof

Abstract

The invention discloses a cutting wire for one-way wire traveling of low magnesia and a manufacturing method thereof. The core comprises the following materials: 75-85 percent of copper, 0.0005-0.50 percent of magnesium, 0.001-0.03 percent of boron, 0.0005-0.02 percent of RE, 0.05-1.0 percent of other elements, less than 0.5 weight percent of inevitable impurities and the balance of zinc, wherein the other elements are at least two of titanium, iron, silicon, nickel, manganese, aluminum, tin and phosphorus. The surface layer comprises the following materials: 35-45 percent of copper, 0.0005-3.0 percent of oxygen, 0.0005-0.25 percent of manganese, 0.005-0.01 percent of RE, less than 0.5 percent of inevitable impurities and the balance of zinc. The core is subjected to upward continuous casting smelting, plastic processing and re-crystallization annealing, the surface layer is thermally treated, and a master blank is generated; the master blank is subjected to continuous drawing and continuous annealing processing to generate the cutting wire. A material piece of which the thickness is greater than 80 mm can be cut by the cutting wire, and the straightness, the dimensional accuracy, the surface smoothness and the cutting speed are high.

Description

technical field [0001] The invention relates to a low-magnesium (magnesium: 0.0005-0.50wt%) oxygen unidirectional wire electric discharge machining (electro discharge machining) cutting wire and a manufacturing method thereof. Background technique [0002] The unidirectional wire electric discharge machining method is a precision machining method developed rapidly in recent years. EDM technology was first invented by former Soviet scholars Lazarenko and his wife in 1943, and then developed rapidly with the improvement of pulse power supply and control system. EDM is a special processing method that uses the electric erosion effect produced by the pulse discharge between the two electrodes immersed in the working fluid to etch away the conductive material. [0003] According to the form of the tool electrode and the characteristics of the relative movement between the workpiece and the workpiece, the EDM methods can be divided into five categories: EDM wire cutting; EDM form...

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Problems solved by technology

On the other hand, because the zinc content in the γ phase is relatively high, and the electrolytic corrosion rate of zinc will be relatively fast, zinc will be consumed rapidly during the cutting process. Similarly, when this cutting wire cuts a material with a thickness of 80 mm, Frequent disconnection or disconnection

[0014] 6. Composite phase cutting wire: The surface of this cutting wire contains both β phase and γ phase, so it is also called composite phase cutting wire. This cutting wire combines the advantages of β-type cutting wire and γ-type cutting wire to make The cutting speed and cutting precision are improved at the same time. Only a few industrially developed countries in the world can produce this kind of cutting wire at the same time, because the mixture of β phase and γ phase must be produced at the same time, so its manufacturing cost will be relatively high. Now this kind of wire Because of the cost of cutting wire, almost no manufacturers use it

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