Drying method

A method for welding hygroscopic plastics parts (1), preferably pipeline components, by means of a butt-welding machine, comprising wherein the two plastics parts (1) are clamped and fixed in a coaxial position in relation to one another by means of a clamping device, wherein the mutually opposite end faces of the plastics parts (1) are planed flat by means of a planer which can be brought in between them, and the ends of the plastics parts (1) are melted by means of a heating mirror (2) that can be brought between them, wherein the heating mirror (2) is disposed at a spacing (3) from the end faces of the ends of the plastics parts (1), in order to achieve the required heat for the melting operation, wherein the ends of the plastics parts (1) are joined together after the melting operation, wherein the ends of the plastics parts (1) are dried while the plastics parts are being fixed on the butt-welding machine, wherein the drying is performed by the heating mirror (2) disposed between the ends of the plastics parts (1).