JPS609577B2 - Electrode materials for electrical processing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrode material for electrical machining such as electrical discharge machining and electrolytic machining.

Copper has been mainly used as an electrode material for electrical discharge machining. In particular, only copper was used for the wire electrodes. However, as an electrode material with improved machinability and good durability, we have improved workability.
There have been proposals to maintain machining accuracy and reliability and to improve the amount of machining per amount of wear. The present invention aims to overcome the drawbacks of these conventional electrodes.

Another object of the present invention is to provide an electrode with low electrode consumption and good durability. Another object of the present invention is to provide an electrode with improved heat resistance. Another object of the present invention is to provide an electrode that improves machinability, improves machining accuracy and reliability, and provides good workability. Next, an outline of the present invention will be described.

The present invention uses a first composition material having a composition in which tellurium is dispersed in copper in an amount of 0.1 to 1%. In addition, the first composition material includes at least one of zinc, zirconium, aluminum oxide, zirconium dioxide, yttrium, and graphite.
A second composition is used in which at least one species is dispersed and the content of each component is at most 1% or less and the total amount is 3% or less. These compositions are used by forming an electrical discharge machining electrode into a predetermined shape and size, for example, a wire. Next, the present invention will be described with reference to some embodiments.

Example 1: [11 Tellurium 0.5%, zirconium 0
．． 5%, balance steel, (2} tellurium 0.

5%, zirconium 0.5%, yttrium 0.8%,
Balance copper, '3} Tellurium 0.5%, zirconium dioxide 0.2%, balance copper, ■ Tellurium 0.5%, aluminum oxide 0.2%, balance steel, [5} Tellurium 0.5%, zinc 1%, Yttrium 0.2%, residual steel, '6} Tellurium 0
．． 5%, zinc 1%, zirconium 0.6%, residual steel, {7
1 tellurium 0.5%, graphite 1%, yttrium 0
．． 2%, residual steel, supra 1}~ (These are exemplary compositions of the first and second composition materials of the present invention.

At least one or more components are dispersed and contained in copper such that each component is 1% or less and the total amount is 3% or less. It has been found that when a wire containing the above-mentioned components is used as a processing electrode, the amount of wear is extremely small.
FIG. 1 shows the change in tensile strength versus temperature for the exemplary composition of the present invention.

Conventional copper electrodes, as shown in curve CI, are 200-30
Although it decreased rapidly in the range of 0 ○, m~{ of the present invention
The characteristics of the skin improved as shown by curves 1 to 7. Also,
As shown in Figure 2, when the amount of electrode consumption for a given processing amount is displayed as E/W, in the case of conventional copper, as shown in the AI group in the figure, 0.6-1
．． However, in the case of the present invention, as shown in group A2 in the figure, it was 0.01 to 0.6%, confirming a significant improvement. In the above embodiment, the processing pulses are Ton600As, Toff200s, lp
This was the result of conducting the test at Cape 2. As already mentioned, the composition of the present invention can be used in electrodes for electrical discharge machining, and can be used to reduce electrode wear and improve heat resistance compared to conventional electrodes.
It has improved machinability, improved machining accuracy and reliability, and has therefore significantly improved workability and reliability.

Depending on the processing method, the composition of the present invention can be molded into an electrode of a predetermined shape and size under appropriate conditions to produce good effects. It is also highly effective as an electrode in applications other than electrical discharge machining.

[Brief explanation of drawings]

FIG. 1 is a graph showing the relationship between temperature and tensile strength of the first and second composition materials of the present invention. FIG. 2 is an exemplary graph showing the electrode wear. Figure 1 Figure 2

Claims (1)

[Claims] 1. Electrode materials for electrical processing, consisting of copper as a main component and at least 0.1% and at most 1% of tellurium dispersed therein, and zinc, zirconium, aluminum oxide, zirconium dioxide, yttrium, graphite, etc. It is characterized by containing at least one element or compound dispersedly, and the amount of each component element or compound making up the composition is at most 1% or less (not including 0), and the total amount is 3% or less. Electrode material for electrical processing.