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EDT obrada teksture površine radnih valjaka
EDT obrada (Electrical Discharge Texturing) predstavlja proces obrade metala promenom njegove teksture, odnosno površinske strukture materijala radnog predmeta (radnog valjka sa završnih Valjačkih linija) pomoću kontrolisanih električnih pražnjenja kojima se stvaraju električni impulsi između elektroda i radnog valjka, što izaziva formrianje mikronskih krateri i udubljenja na njegovoj površini.
Tehnički podaci EDT mašine E-TEXT 650.21
| Mechanical Data | approx. dimensions (L x W x H) | 8.5m x 3.0m x 3.2m |
| approx. footprint (L x W) | dependent on local conditions and safety fence | |
| approx. weight (excl. dielectric oil) | 35 t | |
| Dimensions | max. roll length | 5500 mm |
| max. barrel length | 2440 mm | |
| max. roll weight | 10 t | |
| max. roll diameter | 650 mm | |
| min. roll diameter | 320 mm | |
| No. of texturing units | 21 | |
| angle of texturing units from vertical | 35° | |
| Head Stock Drive | max. speed | 70 rpm |
| max. torque at roll connection | 3000 Nm | |
| Travel | Head Stock | 300 mm |
| Carriage for eroding units | 6500 mm | |
| Eroding Units | 410 mm | |
| Roll oscillation stroke | 0 mm | |
| Steady Rests | 5000 mm | |
| Electrical Data | Supply Voltage | 500 VAC ±10%, 50 Hz ±2% |
| Control Voltage | 24V DC | |
| Power Consumption | max. 75 kW | |
| Power Infeed fuse | customer |
| Compressed Air | Air Pressure | 4,5 to 7,0 bars |
| Air Quality | dry, free of dust | |
| Dielectric Oil | Size of dielectric oil tank (without roll inside) | approx. 5100 lit. |
| recommended dielectric oil | Shell Macron EDM110 | |
| Environmental Conditions | Ambient air temperature during operation | 10 to 35°C |
| Air temperature storage | 20°C | |
| rel. humidity during operation | 30 to 95% | |
| Electrode head | For insert of 45mm / 50mm electrodes | 50 – 150 mm |
| Electrode | Cu 45 x 12; hollow | |
| No. of Electrodes | 21 | expandable to max. 30 |
| Emissions | Noise level | < 85 ± 2dB(A) |
| EMC | according to EMC regulations for industrial environments |