Radyne provides stress relief prior to Pipe-End Swaging
Posted on Tuesday, November 17, 2009
Radyne IHWT is a world leader in the design and manufacture of Induction Heating equipment serving a multitude of applications within the Oil and Gas sector worldwide, both onshore and offshore.
One such application where Radyne engineers have considerable experience is in the field of onshore induction heating of pipe-ends, prior to the swaging process. It is well known that the operating service life for a length of drill pipe can be extended by improving both the torsional and the bending strengths in the swaged area of the pipe.
By using fast and efficient induction heating, residual stresses in the pipe can be removed prior to swaging, enhancing the overall quality of the product. Precision induction heating is carried out using a concentrically aligned induction coil that moves along the pipe axis to pre-heat in accordance with the customer’s specific requirements. Induction heating is also cleaner and better for the environment than conventional heating by gas.
Induction heating also greatly assists the precision swaging of pipe-end sections prior to threading. Stress relieving a pipe-end section is essential if the exact pipe dimensions or geometry need to be free from distortion, enabling precision threading of the pipe to be achieved.