FIELD: calibration of rolls of pilger mills for rolling thin-wall tubes, possibly in tube rolling plants with pilger mills.
SUBSTANCE: roll of pilger mill for rolling thin-wall tubes has along circumference of its barrel round cross section groove with outlets portions. Said groove is restricted along its length by successively arranged striker formed by increasing radius of ridge of roll; polishing portion; lengthwise outlet portion and idle portion. Polishing portion has increasing radius of its ridge. Conicity degree of polishing portion in groove development is equal to that of mandrel and it has opposite direction.
EFFECT: lowered degree of lengthwise wall thickness difference, reduced quantity of tubes suitable for using after first production process, lowered metal consumption factor of ingot-tube conversion and cost of such conversion.
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| Title | Year | Author | Number |
|---|---|---|---|
| ROLL OF PILGRIM MILL FOR ROLLING OF THIN-WALLED PIPES FROM COLD-RESISTANT AND CORROSION-RESISTANT GRADES OF STEEL | 2012 |
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