Technical advantages of high-frequency resistance welded steel pipe (ERW steel pipe) Forming roller column the following:
(1) Reduce the number of roughing molding, reduce the cost of roll and roll replacement time. Rough roll forming machine roll forming technology generally consists of two horizontal roller frame, the inner and outer rollers for all pipe size range of products, the first rack roller is usually only one, but in the second rack roller And roll need to have a few sets. Compared with the number of rollers, the roller molding machine investment has been reduced.
(2) improve the quality of the pipeline. By a number of small-diameter discharge roller roll forming machine instead of large-diameter roller surface speed to reduce the difference and improve the edge of the steel stretch to improve the quality of the side part of the pipe.
(3) reduce roll replacement time and increase productivity. Although there are several groups of rough forming rolls and rolls, they are not enough to replace tubes with different diameters. The replacement of each roll is necessary. Precision machines and sizing machines are widely used, so the rigid frame and quick-change device, roll change greatly shortened from the original 1 minute to 2 minutes and tens of minutes of time. Roll change time is shortened and production increases, so roll forming technology is not only gaining popularity in pipe production, but production in small diameter pipe is also being promoted. It can be said that after the mid-1980s, a row of roll forming technology development period.
