METHOD OF FORMING A HIGH FRICTION JOINT

摘要

Method of forming a high friction joint between a first tubular metal body (1) and a second tubular metal body (2), the method comprising: selecting a first tubular metal body having a first outer face (3) at a first end portion (4) thereof and selecting a second tubular body having a second inner face (5) at a second end portion thereof, the first and second faces being capable of overlap to enable the first and second tubular metal bodies (1,2) to fit together; treating the first outer face (3) and/or the second inner face by introducing a friction enhancing agent to at least part of one or both thereof; inserting the first end portion of the first tubular metal body inside the second end portion of the second tubular metal body such as to form a low friction joint therebetween; and moving the first end portion of the first tubular body relative to the second end portion of the second tubular body to create rubbing at the first and second faces (3,5) to activate the friction enhancing agent and to thereby form said high friction joint.