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US 12,521,944 B2Granted
Drying method
AssigneeGeorg Fischer Rohrleitungssysteme AG
InventorsEdin Hasific, Juergen Roesch, Mariano Gutierrez, Benedikt Engesser
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Abstract
A method for welding hygroscopic plastics parts, preferably pipeline components, by means of a butt-welding machine, wherein the two plastics parts are clamped and fixed in a coaxial position in relation to one another by means of a clamping device.
Claims9
A method for welding hygroscopic plastic parts, comprising:
- clamping two hygroscopic plastic parts and fixing the two plastic parts in a coaxial position in relation to one another with a clamp of a butt-welder,
- planing mutually opposed end faces of the two plastic parts with a planer positioned between the end faces such that the end faces are flat after planing,
- drying the end faces with a heating mirror disposed between the end faces while the two plastic parts are fixed in the butt-welder,
- melting the end faces with the heating mirror positioned between the end faces, wherein the heating mirror is disposed at a spacing from each of the end faces in order to provide required heat for melting, and
- joining the ends of the plastic parts together after the step of melting.
2 more elements
Dependencies are inferred from the claim text.