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3. Influential factors
3.1 Welding parameters
It is essential to control welding machines either by controlling pressures or by adjusting strokes.
Pressure control is reserved for large weld areas of over 300 mm 2 and wall thicknesses of at least 2 mm.
Stroke adjustment is useful for thin wall thicknesses and small surfaces, but especially for materials with high melt viscosity, such as most crystalline polymers.
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The Ultimate Scientific and Technical Reference
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Material processing - Assembly
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Influential factors
Bibliography
Standards and guidelines
DVS Verlag
- Calculation of thermoplastic tanks and apparatus. Welded joints (1975) - DVS 2205-3 -
- Welding of thermoplastics ; extrusion welding for panels and pipes (1993) - DVS 2207-4 -
- Faults in welded joints in Thermoplastics (1998) - DVS 2202-2 -
Machinery and process suppliers
Mecasonic http://www. mecasonic.com
Branson http://www.bransonultrasonics.com
Rinco http://www.rinco-france.com
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Resource centers
Pôle de plasturgie de l'Est http://www.ppe.asso.fr
Institut de soudure http://www.isgroupe.com
TWI (The Weldind Institute) http://www.twi.co.uk
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