Application of Coil Preparation Stand to Two-step Pipe Welding Process

Described in the paper are the main aspects of the coil preparation stand integrated in the two-step pipe welding operation line, including equipment configuration and structure characteristics, and work principle and work process.Also analyzed is the effect by the dimensional accuracy of the head-end of the coil on the oblique cut amount.The analysis reveals that the side-bending amount imposes rather obvious effect on the oblique cut amount.In this case, if the bending range of the steel "sickle" is controlled within 6 mm/5 m, the butting-edge-milling speed shall be increased, and thus the butting time shall be shortened, and the output enhanced.The actual operation result shows that the coil preparation stand is capable of reliable operation, and is quite satisfactory to the need by the production.