Crack and pore detection in rolling mill rolls, etc.

摘要

Process comprises rotation during submerged arc welding at above the Curie point in the paramagnetic field generated by a dipole. To increase efficiency, this latter is fired decentrally at the top at an angle of 10 deg. to the vertical axis of the roll and contrary to the direction of rotation. - The alloys used can include chemicals such as phosphorus, silicon, boron and lithium.