Extrusion International 6-2024-USA

45 Extrusion International 6/2024 mers, regardless of whether they are filled with talcum, barium sulphate or fibres such as carbon or glass fibres, a special wear protection finish makes sense. CONEX - TRU offers a wide range of metal variants, as shown in the table. For corrosive melts with fluoropolymers or polyamides, additional corrosion protection is recom- mended, which is usually achieved by a stainless-steel screw with a nickel-chromium-molybdenum coating in combination with a bimetallic cylinder. Individuality right to the end CONEXTRU also offers several options for controlling the extruder. Relay control remains available, which may be sufficient for colour strip extruders. Alterna - tively, microprocessor-controlled equipment exists with hardware and software components from ABB. CON- EXTRU made a conscious decision in favour of ABB, as worldwide service is guaranteed for all customers. The complete package from ABB includes an air-cooled frequency inverter, motor, the CP 610 PLC with 10.1" touchscreen and HMI. Simplicity is ensured by clear design and limitation to the basic functions of operation, heating programme, production memory and energy measurement. The heating of the pipe head is visualised using CAD draw- ings and integrated into the control system, preventing incorrect assignments. If required, additional functions can be integrated into the control system. These addi- tional functions include: the gravimetric dosing device with output or weight per metre control; synchronisa- tion with coextruders in multilayer systems; vacuum control for cross extrusion heads; melt pump control; vacuum and temperature control of the vacuum tank (for single and double strand extrusion) and finally the integration of haul-offs and saws from other manufac- turers. Needless to say, CONEXTRU control solutions are Industry 4.0-compatible and integrable into the proces- sor's own structures. Replacing processing units as a good alternative to new investment In addition to its own C-series extruders, CONEXTRU offers processors the opportunity to optimise existing extruders, regardless of the machine manufacturer, with new processing units. To do this, the expert views existing solutions on site and records technical data of the extruder in order to measure all relevant dimensions so that he can precisely design and build the new plas- ticising unit. "We have already carried out this type of optimisation many times. We use the frame, the exist- ing motor-gearbox installation and rebuild the entire processing unit according to the processor's individual specifications. The focus is usually on saving energy or increasing performance." In some cases, new process- ing units also make sense if a processor wishes to ex- pand the extruder's area of application or switch to a different material. Josef Dobrowsky believes in the in- creasing importance of AI-supported models and their assistance in extruder design, where he looks forward to contributing his expertise. CONEXTRU GmbH Klosterstr. 19, 3011 Irenental, Austria www.conextru.eu; Dobrowsky.j@conextru.eu Standard execution Wear resistance execution Corrosion resistance execution Screw Base steel Feed section unit end of feed zone Remaining body Option 1/8509, 38CrMoAla, Quenching and tempering HB260~290 Hard facing on screw flights with Colmonoy#56 nitride, alloy depth 1.0mm~1.5mm, about HRC60 full chrome plated 34CrAlNi7, 1/8550, Quenching and tempering HB260~290 Tungsten carbide coating, at root and flight diameter on top of flight nitride, alloy depth 1.0mm~1.5mm, about HRC60 1/4542, stainless steel hard able or as alternative 2/7819 Hastelloy - Nickel-Chrome-Molybdenum- alloy with Wolfram Hard facing on screw flights with Colmonoy#56 Feedbush Feedbush housing Grooved feedbush 1/8509, 38CrMoAla, Quenching and tempering: HB260~290 nitride layer: 0.4-0.7mm, hardness: HV950 1/8509, 38CrMoAla, Quenching and tempering: HB260~290 1/8509, 38CrMoAla, Quenching and tempering HB260~290 nitride, nitrating layer: 0.4-0.7mm, hardness: HV950 1/2344 - X40CrMoV5-1 - H13 - T20813, SDK 62 , Quenching and tempering HB260~290, nitride, Hardness: ≥900HV 1/8509, 38CrMoAla, Quenching and tempering HB260~290 nitride, nitrating layer: 0.4- 0.7mm, hardness: HV950 1/2344 - X40CrMoV5-1 - H13 - T20813, SDK 62 , As an alternative 2/4856 – INCONEL Barrel Base material Liner 1/7225, 40Cr, Quenching and tempering: HB260~290 Bimetallic liner 3mm, Hardness: 58~62HRC 1/7225, 40Cr, Quenching and tempering: HB260~290 Bimetallic-liner 3 mm, Nickel based Tungsten carbide, 25% tungsten carbide, HRC58~63 1/7225, 40Cr, Quenching and tempering: HB260~290 2/4856 Bimetallic-liner 3 mm, INCONEL, With option to add 5 – 25% Tungsten carbide www.smart-extrusion.com