Knowledge of die EDM machining method

Die processing method is a variety of, let's analyze the knowledge about EDM forming processing method. Edm machining is mainly used in the tool and the workpiece generated pulse spark discharge electrical corrosion phenomenon to corrode the excess metal, in order to achieve the technical requirements of the parts of the size, shape and surface quality.
1, die EDM forming processing method must meet three conditions:
0 A certain gap must be maintained between the tool electrode and the workpiece surface to be machined. Therefore, automatic feed and adjustment device of the tool electrode must be provided in EDM:
2. Spark discharge must be instantaneous pulse discharge, for which EDM must use pulse power supply
@ Spark discharge must be carried out in a liquid medium with certain insulating properties.
2, the factors affecting the corrosion rate of EDM forming: electrical gauge, polarity effect, thermal constants of metal materials, working fluid, chip removal conditions
3. Factors affecting the machining accuracy of EDM forming: various errors of machine tool itself, manufacturing accuracy of tool electrode, positioning and installation errors of workpiece and electrode, size and consistency of discharge gap, loss of workpiece electrode and processing stability
4, the electrode material requirements of EDM processing: small loss, stable processing process, high productivity, good machining performance, low price. Common materials: copper, graphite, cast iron, steel, yellow, with tungsten alloy, silver tungsten alloy.
Structural form
D Integral electrode
@ Mosaic electrode
@ Combination electrode.
5, EDM forming processing cavity die method :@ single electrode translational method @ multi electrode replacement method O decomposition electrode method

2023-01-18

The deformation caused by internal forces in die parts. There are only two approaches: stress relief and mechanical reprocessing or a combination of the two.

2023-01-18

2022-12-30

Use of flux

2022-12-30

Surface mount welding usually requires a small diameter tin wire, typically in the range of 0.50 to 0.75mm.

2023-01-18

Often, operators use too much flux. I'd rather use flux pens because they limit the amount of flux used.

2023-01-18

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