Extrusion roller hole pattern of high-frequency welded pipe rolling mill
A technology of high-frequency welded pipe and squeeze roller, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problems of uneven heating of steel pipe, poor welding quality of steel pipe, cracking of welding joint of steel pipe, etc., to achieve good welding quality, Good quality steel pipe and uniform heating effect
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[0010] Such as figure 1 As shown, the present invention is a squeeze roll pass of a high-frequency welded pipe rolling mill, which includes a pair of squeezing side rolls one, two squeezing side rolls 2 with the same structure and installed side by side. The upper roller 4, the squeezing upper roller 5, the squeezing side roller 1,2, the squeezing side roller 2 is installed on the side roller shaft 3 by a key, the squeezing upper roller 4, the squeezing The upper roller 2 5 is mounted on the upper roller frame shaft 6 through bearings. The inner arc radius of the hole pattern of the squeezing upper roller 4 and the squeezing upper roller 2 5 is R1. The inner arc radius of the pass of the second roller 2 is R2, the R1 is greater than R2, preferably the R1 is equal to 1.2 times R2, at this time, the inner arc radius R1 of the upper roller pass and the pass of the extrusion side roller The inner arc radius R2 has a certain amount of deviation, which makes the two ends of the stee...
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