Sinker EDM Finishing Processes / /
To customize a sinker EDM part, finishing processes may be needed. Finishing services offered by Fathom include:
The painting process adds color, varnish or ink to a part using powder coating, liquid coating, or e-coating. During powder coating, an electrostatically charged powder is used, resulting in a scratch-resistant and uniform coat. Liquid coating is when wet paint is applied to a surface. E-coating is the process of dipping a metal part into a bath of paint. The part and paint are electrified, and the paint adheres to the part.
Transferring adds a design or label to a part. During transfer, a heated press transfers the design to the workpiece. The design may later be engraved onto the part.
When a final product must be constructed from smaller parts, assembly is required. Fasteners or bonding procedures may be used to fuse the parts together. The part may be permanently or temporarily bonded with other parts.
The drilling process adds a round hole to a part using different types of drills. Depending on the type of mark that must be made, a spotting drill, peck drill, drill presses, tapping, or milling machine may be used.
Unwanted raised edges or material is removed from parts during the deburring process. Excess material is also known as burrs. Deburring may be achieved using several methods, including electrochemical deburring, thermal deburring, and abrasive flow deburring. Electrochemical deburring uses an anodic metal dissolution to remove unwanted material. During thermal deburring, a combustible gas is added to a pressurized chamber to deburr a part. Abrasive flow deburring uses an abrasive slurry to deburr the part.