| 摘要 |
PURPOSE:To obtain a thermosetting resin pipe provided with a flange, whose bending strength and shearing strength of a flange joining part are both high, by a method wherein molten resin is piled up on an angular corner between the outside of a pipe and the outside of the flange. CONSTITUTION:A pipe body 1 is supported coaxially with a flange member 2.. An end surface 11 of the pipe body 1 and a joint surface 23 of the flange member 2 are molten by heating them. A surface temperature range of 200-220 deg.C and heating time range of 60-90 seconds are preferable as a heating condition at this time. Immediately after the heating, the end surface 11 of the pipe body 1 and joint surface 23 of the flange member 2 are confronted with each other, a load is applied to them in an axial direction and they are pushed against each other. The molten resin is piled up on an angular corner between the outside of the pipe body and the outside of a surplus thickness part 22 of the flange member 2. Consequently, the angular corner is reinforced and the flange member 2 and pipe body 1 are joined firmly to each other. Although the molten resin is piled up also on the inside of the pipe body 1, since a chamfering 12 is provided on the pipe body 1 and a chamfering 24 is provided on a flange member 2, the molten resin is not ejected through inner wall surface of the thermoplastic resin pipe 1. |
