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EDM Wire / Cutting precision
- Machine Model： SEIBU MM 500
- Workpiece Material： SKD-11
- Workpiece Thickness： 50mm
- Number of Cut： 6
- Cutting Time： 80hr
- Wire Diameter： 0.20mm ( YFW-20H. Cu/Zn 40)
- Perpendicularity： 2μm
- Surface Finish： Ra 0.2
- Machine Model： AGIE AC Progress V3
- Material： SKD11
- Workpiece Thickness： 150 m/m
- Number of Cut：21 hr
- Cutting Time： 5
- Wire Diameter： 0.25 mm (YFW-25H. Cu/Zn 40)
- Perpendicularity： 2μ
- Surface roughness： 0.27Ra
Compared the Wire Cost, Added Value and Net Profit
| Item to compare between | Normal brass wire | YFW | Coated Wire |
|---|---|---|---|
| 1 rough Cut, 5 Finished | non | yes | yes |
| Surface Roughness - Ra (μ) | > 0.3 | ~0.27 | ~0.27 |
| Cutting Speed (mm2/min) ( Out-put) | A | A*1.15 | A*1.15 |
| Auto Threading Achievement(%) | ~80 | ~97 | ~97 |
| Wire Unit cost USD6.-/kg , (B) | B | (B+2) | (B+3)*2.1 |
| Day: Wire Cost per day (USD8.-/kg*5kg/d) | 30 | 40 | 55.5 |
| Added Value per day(USD8.-/hr*20hr./d) | 160 | 184 | 184 |
| Net Profit per day (USD/d) | 130 | 144 | 128.5 |
| Month: Wire Cost per month (USD/d*25d/m) | 750 | 1000 | 1387.5 |
| Added Value per Month (USD/d*20d/m) | 3200 | 3680 | 3680 |
| Net Profit per month (USD/m) | 2450 | 2680 | 2292.5 |
| Year: Wire Cost per month (USD/m*12m/y) | 9000 | 12000 | 16650 |
| Added Value per Month(USD/m*12m/y) | 38400 | 44160 | 44160 |
| Net Profit per year (USD/y) | 29400 | 32160 | 27510 |
Remark: 0.25 m/m by Agie-Progress V3 for SKD11 thickness 150 m /m, testing at MASSLOAD, ChangHua /Taiwan
2009/3/26