PRODUCTS & EQUIPMENT
POLYSOUDE
delivery date and to finish the cladding of the 27 t valves on time. Based on an elaborate case study about the surfaces to be clad, their accessibility inside the valve bodies and the necessary workpiece position (Fig. 4) Polysoude proposed an overlay welding installation composed of:
• a column and boom device for the vertical and horizontal positioning of the equipment with additional cross-slides for precise movements of the welding tools (Fig. 5)
• a welding set of conventional and TIGer torches, mounted on corresponding welding lances
• two articulated TIG cladding lances with different lengths (Fig. 6)
• two articulated TIGer cladding lances with different lengths (Fig. 7)
• an SPX device (endless rotating collector with quick release connections to held the welding lance)
• the necessary ancillary equipment like power sources, cooling units, control cabinet etc.
The proposal was generally accepted by AER, but as subcontracting company they also voted to preserve all possibilities and options for the later use of their future equipment. So it was
Figure 7: Articulated TIGer cladding lance
agreed that the installation should come with a CNC control.
Figure 6: Articulated TIG cladding lance
Development and implementation of a suitable CNC control for the cladding installation CNC (Computer Numerical Control) is a versatile technique which has been mainly created for the automation of machine tools. Up to that time, Polysoude had delivered all welding installations with their proper control system, which, as result of many years
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of experience and continuous development, works safe and reliable. However, the flexible CNC command software had to be adapted to the specific needs of overlay welding equipment, an excellent opportunity to create a modern, suiting human-machine- interface. A close cooperation between Polysoude and AER should ensure that all necessary functions were arranged to support the operator in a user- friendly manner. The entire data for a welding
IMT December 2017 21
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