The application of end mills in surface treatment after Electrical discharge machining

End mills mainly undertake tasks such as finishing, mirror finishing, matte surface treatment, repair and strengthening in surface treatment after electrical discharge machining. They achieve dimensional correction, roughness optimization and functional strengthening of the surface after electrical discharge machining through high-precision cutting. The following is the specific analysis:

Electrical discharge machining features high energy density and non-contact processing. It is suitable for processing complex shapes and hard and brittle materials. However, after processing, there may be problems such as microscopic unevenness and deteriorated layers on the surface. As a mechanical cutting tool, end mills can further process the surface after electrical discharge machining through their high-precision cutting capabilities, optimizing surface quality or correcting dimensions.

Application scenarios

Fine machining and dimensional correction

After electrical discharge machining, there may be residual electrical erosion marks or dimensional deviations on the surface of the workpiece. End mills can precisely remove excess material, correct dimensional tolerances and reduce surface roughness through high-speed rotation cutting. For instance, in mold manufacturing, after electrical discharge machining of the cavity, using end mills to perform fine machining on key parts can ensure that the cavity dimensions meet the design requirements.

Mirror surface processing

For surfaces that require high gloss (such as automotive exterior parts and notebook shell molds), further polishing is still needed after electrical discharge machining. End mills can achieve a mirror-like finish through ultra-precision cutting, combined with appropriate cutting parameters and tool paths, reducing the workload and cost of manual polishing.

Matte surface treatment

Some products (such as mobile phones and household appliances) require a matte surface to enhance the visual effect and hand feel. Electrical discharge machining can form uniform discharge marks on the cavity surface. End mills can further adjust the surface roughness by controlling the cutting depth and path to achieve the desired matte effect.

Surface repair and strengthening

After electrical discharge machining, there may be microcracks or residual stresses on the surface of the workpiece. End mills can remove the surface deterioration layer through micro-cutting, and at the same time, in combination with surface strengthening processes (such as electrical discharge surface strengthening), form a high-hardness and wear-resistant strengthening layer on the workpiece surface, thereby extending the service life of the workpiece.

Advantage

High precision: End mills can achieve micron-level cutting, meeting the requirements of high-precision processing.

Flexibility: By adjusting cutting parameters and tool paths, it can adapt to different surface treatment requirements.

Efficiency improvement: Compared with manual polishing, end mills have higher processing efficiency and are suitable for mass production.

Stable quality: Mechanical processing can reduce the impact of human factors on surface quality and improve product consistency.