Wedm-adapted wire electrode and method for manufacturing wedm-adapted wire electrode

A wire electrical discharge machining (WEDM)-adapted wire electrode, comprising:

• a core material composed of brass having a zinc concentration of greater than 40 mass %;
• and
• a coating layer covering a periphery of the core material,
• wherein the coating layer comprises an inner layer and an outer layer covering the inner layer,
• wherein the inner layer is composed of brass having a zinc concentration higher than the zinc concentration of the core material and lower than a zinc concentration of brass constituting the outer layer, and
• wherein a ratio of a thickness of the coating layer to a diameter of the WEDM-adapted wire electrode is 2% or more and 20% or less.

A method for manufacturing a wire electrical discharge machining (WEDM)-adapted wire electrode, comprising:

• applying heat treatment to a wire material having a core material composed of brass and a zinc film or a brass film having a higher zinc concentration than the core material around the core material, causing atomic diffusion to occur between the core material and the zinc film or the brass film, thereby forming a coating layer covering the core material;
• and
• drawing the wire material after the heat treatment to provide the WEDM-adapted wire electrode,
• wherein the WEDM-adapted wire electrode includes the core material composed of brass having a zinc concentration of greater than 40 mass %,
• wherein the coating layer is composed of brass having a zinc concentration higher than the zinc concentration of the core material and of 44 mass % or more and 50 mass % or less, and
• wherein a ratio of a thickness of the coating layer to a diameter of the WEDM-adapted wire electrode is 2% or more and 20% or less.

A method for manufacturing a wire electrical discharge machining (WEDM)-adapted wire electrode, comprising:

• applying heat treatment to a wire material having a core material 11 composed of brass and a zinc film or a brass film having a higher zinc concentration than the core material around the core material, causing atomic diffusion to occur between the core material and the zinc film or the brass film, thereby forming a coating layer covering the core material;
• and
• drawing the wire material after the heat treatment to provide the WEDM-adapted wire electrode,
• wherein the WEDM-adapted wire electrode comprises the core material composed of brass having a zinc concentration of greater than 40 mass %,
• wherein the coating layer comprises an inner layer and an outer layer covering the inner layer,
• wherein the inner layer is composed of brass having a zinc concentration higher than the zinc concentration of the core material and lower than a zinc concentration of brass constituting the outer layer, and
• wherein a ratio of a thickness of the coating layer to a diameter of the WEDM-adapted wire electrode is 2% or more and 20% or less.