Osaka, Keihan Main Line, Takii Station (in front of), Nikko Metal Engraving Co., Ltd.| Introduction of hardened type direct engraving and electric discharge machining of carbide material"

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Direct engraving is possible for heat-treated materials depending on the material, quenching hardness, and processing shape.
We challenge ourselves to use direct engraving instead of electrical discharge machining when possible, which leads to shorter processing time and cost reduction.
We process carbide parts and engrave letters on cemented carbide using electrical discharge machining.

Cutting

Direct engraving of convex letters on the mold instead of using the EDM

EDM

The mold for a battery cell with a diameter of Φ7. The material is carbide. The height of the characters "JAPAN" is 0.55 mm.
The electrode material is tungsten-copper. The tool used has a 20° taper and a tip diameter of Φ0.06.

Difficult-to-cut materials

Engraving on tungsten, a difficult-to-cut material. Fine engraving was performed on a Φ4 tungsten round bar using a small-diameter tool.

Direct carving of high-hardness materials from solid block.
Material: SKD11HRC60
Processing range: 92X30X14.5(mm)
Tools used: 1. Roughing R3 ball 2. Medium rough R2 ball 3. Finishing R1.5 ball 4. Finishing R1 ball