Explaining the electrolytic etching process

Electrolytic etching begins with the creation of an image on a stencil. The image is then transferred to a metal surface with an electrolyte and an electric current. The electric current passes through the openings in the stencil. The electrolyte allows the image of the stencil to be transferred onto the base metal.

The basic equipment includes a power unit, which provides the voltage and current required to make the mark. The size of the power unit depends on the area that needs to be marked and the speed of the marking process.

Most power units on the market today range from 5 Volts to 40 Volts and have an ampere output from 0 to 40 amps. All electrolytic etching power units have an On-Off switch and an AC-DC switch to produce an AC mark or a DC etch. (The reverse is true in Aluminum).

Most power units have a rheostat to regulate the output voltage. The required current is produced automatically unless it exceeds the output of the power unit, in which case a fuse or circuit breaker will blow. All units contain banana or polarity receptacles for making contact through cord sets.

A wide variety of materials can be marked with bvar
the electrolytic etching process

Automation and semi-automation electrolytic etching

Both semi-automatic or completely automatic marking systems can be used, depending on the required production speed.

Extra long life stencils, electrolyte pumps and self cleaning electrolytes make it possible to mark almost any metal at any production line speed. It is also possible to adapt to adapt to any line operation and/or relocated electrolytic etching equipment in a matter of minutes.

Key advantages of semi-automatic electromarking machines

  • With a small amount of inexpensive tooling, the parts to be marked can be positioned exactly under the marking head to ensure each part is marked identically.
  • Each time the marking head comes down on the piece to be marked, it applies the same pressure and dwell time, thus assuring identical marks
  • When set in automatic mode, the marking head to move up and down at a predetermined rate, which can help increase production speeds.

Air operated automatic units, a low-cost versatile option, are available as a kit or completely assembled. With proper tooling, these units can provide up to 20,000 marks per eight hour shift; low cost, versatile automation.

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