A DEVICE FOR LUBRICATING AN ANNULAR SPACE BETWEEN A MANDREL AND A HOLLOW BILLET DURING THE MANUFACTURING PROCESSES OF SEAMLESS STEEL TUBES

摘要

The invention relates a device for lubricating an annular space between a mandrel and a hollow billet during the manufacturing processes of seamless steel tubes, comprising :a tank (1) accommodating lubricant; a pipeline (7) for transferring the lubricant from the tank (1); a hot metal detector acquiring temperature data when a hollow billet (7) placed on the crimping line; a first solenoid valve (6) actuable based on the feed back data from the hot metal detector such that the lubricant is sprayed onto the hollow billet (7) through a nozzle; and a mandrel (10) advancing into the hollow billet (7) upon completion of spraying of the lubricant.