Rafter Commissions RT-6000 Weld Box
PUBLISHED: 09 Dec 11
Rafter successfully commissioned a new RT-6000 weld squeeze box at a major North American DOM tubing producer
Rafter Equipment Corporation successfully commissioned a new RT-6000 weld squeeze box at a major North American DOM tubing producer. The installation took place over the recent US Thanksgiving Holiday weekend.
The 4-roll design is an upgrade of a previous Rafter 4-roll weld box. The new unit was needed to accommodate the increased wall thickness requirement of the line. It will allow the customer to run up to 5.000" OD x 0.500" wall (127.0 mm x 12.7 mm) and 6.625" OD x 0.345" wall (168.3 mm x 8.8 mm) steel tubes.
In addition, this mill typically produces 3.500" OD x 0.440" wall (88.9 mm x 11.2 mm) high-strength, low alloy steel tube.
The improved lower roll assembly utilizes a "dead shaft" design that puts the roll bearings within the roll tools. This arrangement allows for quick and easy inspection/replacement during routine roll changeovers. The new lower roll design also squeezes on the centerline of the tube thereby eliminating the cantilevered loads that were present on the previous design. Additionally, the lower roll squeeze adjustment was improved to make operator adjustments easier.
Rafter Equipment Corporation manufactures tube and pipe mills, roll forming machines, cutoff machines, auxiliary and other related tube and pipe mill machinery. Additional services include rebuilding and upgrading mill equipment. Originally started in 1917, the Rafter name is known for reliable, high-quality tube mill and roll forming equipment.
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