| 摘要 |
Thermo plastic pipe or tubing is flared into the outer member or nut of a flare fitting of the type in which the flare is interlocked with an annular recess of greater diameter than the threads. The flaring is accomplished by first assembling the nut on the pipe and then assembling on the pipe a spinning tool locally contacting the pipe end to be flared and rotated and axially advanced about the axis of the pipe. As the tool is rotated, the plastic is locally deformed both axially and radially and at the end of the flaring operation is squeezed into the annular recess so that the nut is permanently attached to the pipe by the flare.
|
