- Basic machine (welding slide) including distance sensor and hose packet as a connection to the WIDOS CNC unit.
- Reducer inserts
- Planing tool
- Storage box for planing tool and heating element
- Heating element with anti-stick coating, electronical temperature control according to DVS rule 2208 and VDE with a second temperature sensor for checking and documentation purposes
- Combined hydraulic unit with built-in welding electronics programmed in accordance with DVS rule 2207, built-in dot matrix printer RAM memory, magnetic card reader and LCD indication.
The CNC unit includes the execution of the planing and welding program. Access to the welding program is only possible with the welder's magnetic identification card. The card warrants a secure welding process against unauthorized use. The planing tool and the heating tool are manually positioned due to the lack of space in trenches. The welding process is based on the values of DVS rule 2207; it is programmed according to pipe outside diameter, wall thickness and material. By using the general legitimacy card, the temperature is changeable in allowed tolerances and by using the legimitacy gas card the temperature constantly remains between 200° C and 220 °C based on the wall thickness. The welding run is only possible if each requirement, the nominal values and every working step according to DVS are observed.
If a programmed nominal value e.g. time, pressure or temperature is not observed, or a working step is not executed, the welding process is interrupted and logged by the printer and in the RAM memory. The actual position of the welding process and the order for the next step can be read in the LCD display. All welding data, nominal and actual values are written down by the integrated dot matrix printer and RAM memory considering the consecutive control number, the time, the date, the moving pressure, the nominal and actual pressure etc. That means that all parameters are documented which are important for checking the quality and executing the welding.
An optimal and continuous data recording and quality control is obtained by using the WIDOS CNC welding units for trenches according to DVS, DVGW and other controlling authorities. Pipe system users and pipe manufacturers have applied these for many years.