TPT November 2013

Technology News

Quick-change tube mill T&H Lemont has shipped and commissioned a WU35M-11 quick- change, high frequency tube mill to a customer currently operating other T&H Lemont tube mills. pin socket is supplied and mounted on each upper and lower roll stand roll shaft inboard input stub.

shaft position of the third stand to match the inboard stand. With this feature the set of sub-plates can be set up off-line. The second feature designed for this mill is the AutoSet System, for precise, automated roll adjustment. The system is designed to minimise set-up times. Using encoder and drive technology, the time required for roll adjustment on a new set-up is reduced and can be accomplished from the operator station without the use of hand tools. Utilising AC vector drives, a PLC, absolute position encoders and a colour touch-screen interface, the mill can be programmed to have the rolls automatically return to a predetermined location. In addition to complete production systems, T&H Lemont provides a variety of components and services to the tube, pipe and roll-forming industries. Services include tube and pipe roll design, mill alignment and operational consulting. Components offered include cut-offs, entry equipment, accumulators, seam orientation stands, weld boxes, edge conditioners, bead scarfing systems, straightening systems, single point adjustment systems, dedimplers, rolls, blades, jaws and shafts.

In mill run mode, each mill section sub-plate is securely locked and held in position by the quick change mechanical and hydraulic cylinder system. Hydraulic pressure maintains sub-plate position against the rear alignment blocks and held down by four locking bars and posts. During change-over the hydraulic cylinders push the sub-plates forward away from the stop blocks several inches to disengage the third stand adapter sleeves. Once clear of sleeve engagement, an overhead crane is attached to the sub-plate to vertically lift and remove the sub-plate from the mill. The new sub-plates are positioned and placed over the mill base locking posts. The hydraulic cylinders are then used to pull the sub-plates back against the mill base stop blocks and are locked in run position. While the sub-plates are being pulled back, the adapter sleeve spring loaded detent drive pins depress. Once the sub-plates are hydraulically secured, the mill drive is jogged and all of the spring-loaded detent pins align with the inboard drive pin socket slots, and snap into place. After final set-up checks, the mill is ready to run. Air cylinders and stop blocks will be utilised to locate the upper and lower roll

The mill was designed to form and weld carbon steel and alloys up to 6" OD x 0.312" wall standard pipe sizes, as well as tube sizes up 6.5" OD x 0.125" wall, with material yields up to 150,000psi. For this quick mill, a second set of sub-plates is designed to run a heavier wall tube. This flexibility in mill design allows the customer to serve a number of markets, from standard pipe to high yield tubing. T&H Lemont designed and built the mill with two features to decrease change-over time and increase productivity. The first feature was the design and construction of the mill with the Third Stand Quick Change System. This system couples and connects the mill line universal drive shafts with the mill stand drive shafts while providing a quick release feature when making tube size changeovers. Each third stand is supported and mounted to the mill base in back of the inboard roll stand. Quick-change third stands are equipped with universal drive stud supported in slide blocks which house tapered roller bearings. Each sleeve is assembled with a spring-loaded detent drive pin and is connected to the mill side universal joint bolt style flange. A drive

T&H Lemont – USA Fax: +1 708 482 1801

Email: sales@thlemont.com Website: www.thlemont.com

The next Generation of Carbide Tipped Tube Mill Saws have arrived.

Special engineered carbide tipped saw blades for orbital cutting of API casing and Line pipe on ERW mills. • GPX300 is the right choice for sawing API 5CT J55 to P110. • GPX400 is the right choice for sawing API 5L tubes X42 to X100. • GPX100 is the right choice for sawing Structural ASTM tubes. Blades in stock for OTO MILLS, MTM, KUSAKABE, NAKATA, LINSINGER, THERMATOOL. Worldwide Sales • Worldwide Service. Tru-Cut Saw A Leading Manufacturer In Sawing Technology www.trucutsaw.com

Phone: 330.225.4090 • Toll Free: 800.878.8761 • Fax: 330.225.4741 • E-mail: trucutsaw@trucutsaw.com

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N ovember 2013