 |
|
| Type |
Factor |
Criteria |
Tools |
| Materials |
Contents |
Cu:
63-65%,
Pb: Up to 0.005%, Fe: Up to 0.005%
|
Mill Sheet |
| Diameter |
+0, -0.002mm
|
Micrometer |
| Tensile
Strength |
Up
to 50kg/mm2
|
Tension
Tester |
| Elongation
Rate |
More
than 20%
|
Tension
Tester |
Surface
Finish |
Non
of scratch
|
Microscope |
| Color |
Non
of sign of corrosion or oxidation
|
Naked eye |
| EDM와이어 |
Diameter |
+0, -0.002mm
|
Micrometer |
| Tensile
Strength |
Based
on tensile strength table
|
Testing
Tool |
| Elongation
Rate |
Hard
Wire: More than or equal 0.4%
Soft Wire: More than or equal 15%
|
Tension
Tester |
| Straightness |
Diameter
up to 0.25mm: 10cm/1m
Diameter more than 0.25mm: 5cm/1m
|
Test Board |
Surface
Finish |
No
debris on the surface
|
Naked eye
|
| Spooling |
Flat
surface and overlapping
|
Naked eye
|
|
|
Quality Control Criteria of EDM Wire
