APPARATUS FOR REMOVAL OF INTERNAL FLASH FROM ELECTRIC-WELDED PIPES
摘要
<p>APPARATUS FOR REMOVAL OF INTERNAL FLASH FROM ELECTRIC WELDED PIPES An apparatus for internal flash removal is intended for use in pipe manufacture and comprises a hollow supporting bar inserted into a pipe being welded and carrying an oxygen duct with a main nozzle and a cooled ferrite-holder. An additional nozzle having an oxygen conduit common with the main nozzle is arranged downstream of the main nozzle in the direction of welding. The main and the additional nozzles have oval outlets of different clear openings and are arranged at different acute angles to the weld in the same plane passing through the pipe axis and the weld. The apparatus ensures a quality weld surface finish inside the pipe.</p>
