News & Events at T&H Lemont
January 2014 - T&H Lemont Completes Commissioning of Welded Carbon Tube Mill
T&H Lemont has recently commissioned a Model WU35M-11 High Frequency Welded mechanical tube mill for a repeat North American customer. T&H Lemont was chosen for this project based on successful installation and commissioning of other mills for this customer over the last 20 years. The WU35M tube mill has a tube size range of 2.000" OD to 6.625" OD round tube at yields up to 65,000 psi. The gauge ranges for these sizes is from .090" to .250". In addition, the mill is designed to form and weld 5.750" OD X .375" wall tubing for a custom application. The mill will produce product at speeds up to 300 fpm.
For reduced change-over times, the mill includes a number of quick-change features. The design of the mill includes a permanent third stand to minimize the time required for sub-plate rermoval and replacement. When a change-over is required, the sub-plates are disconnected from the universals utilizing a hydraulically operated disconnect. The sub-plates can then be removed with an overhead crane. When the second set of sub-plates are installed, the sub-plates are moved into position and located to the universals utilizing the same hydraulic system.
The weld box was designed with interchangeable back plates to lessen weld roll change time. Electric motors on the weld box allow roll adjustments to be made from the operator's station instead of manually.
A T&H Lemont Seam Orientation Stand is included in the mill to insure that the weld seam is maintained at top dead center for round tubes. However, if the specification for squares and rectangles calls for the weld seam to be moved from top dead center, this unit will give the customer the flexibility to move the weld seam. This option opens markets for customers that require the weld seam to be off center for fabrication or bending.
November 2013 - T&H Lemont Attends FABTECH 2013
Above, a photo of our Booth at Fabtech 2013.
October 2013 - T&H Lemont Attends 2 Trade Shows in Brazil
Above, a photo of our Booth at the 2013 TuboTech Trade Show.
A photo of our shared Booth with Camasi at the 2013 Corte & Conformção de Metals Trade Show.
Our presence was well received and both Shows proved to be very successful.
August 2013 - T&H Lemont Ships and Commisions New HF Tube Mill
T&H Lemont has recently shipped and commissioned a WU35M-11 Quick Change, High Frequency Tube Mill. The mill was purchased by a repeat customer who currently operates other T&H Lemont tube mills.
For this customer, 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.
The Third Stand Quick Change 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 pin socket is supplied and mounted on each upper and lower roll stand roll shaft inboard input stub.
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 (4) 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, a 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. Then the hydraulic cylinders are 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, then 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 setup checks, the mill is ready to run.
Air cylinders and stop blocks will be utilized to locate the upper and lower roll 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 by T&H Lemont is the AutoSet System of precise, automated roll adjustment. The System is designed to minimize set-up times. Using encoder and drive technology, the time required for roll adjustment on a new set-up is greatly reduced and can be accomplished from the operator station without the use of hand tools.
Utilizing AC vector drives, a PLC, absolute position encoders and a color touch screen interface, the mill can be programmed to have the rolls automatically return to a predetermined location.
March 2013 - T&H Lemont Acquires New Large Diameter 4 Axis Turning Center
T&H Lemont is pleased to announce the full production launch of its newly acquired Hwacheon Hi-Tech 850YMC CNC Turning Center. This addition continues to extend T&H Lemont's reach into large tool markets by expanding their overall diameter and length capabilities to hard turn and finish products up to 45" in diameter as well as products 100" in length.
The demand for turning and finishing these larger tooling items has been growing as customers expand production in SBQ Bars and into larger diameter tooling for API and Oil Country Tubular Products.
The Hwacheon Hi-Tech 850 CNC Lathes were developed to meet todays demands for superior turning center performance. Its distinctive design allows the Hi-Tech 850 to have the largest work capacity and spindle horsepower in its class. This extraordinarily large, well built lathe with multiple, powered 4th Axis machining turret stops has proven to make short work of large complex shafts, straightener rolls, as well as roll tooling for large diameter pipe mills. Programming the machine can be easily handled remotely with CAD/CAM interfaces or manually using conversational inputs.
February 2013 - T&H Lemont Ships 6-Inch Pipe Mill to Mexico
T&H Lemont has recently shipped a Model WU60-11 High Frequency Welded Pipe Mill to a major pipe producer in Mexico. The customer was looking to expand their capabilities in the API market and chose T&H Lemont based on engineering capabilities, manufacturing expertise and value. As an example,after careful engineering analysis, T&H Lemont determined that the existing inboard and outboard castings could be utilized on the new mill. Each driven stand was retrofitted with new shafts, bearings, bearing blocks and single point adjustment; in effect, providing virtually new driven stands throughout the mill at a significant savings to the customer.
The tube size range of the WU60 Mill is from 2.500" to 6.625" round tube with wall thickness ranging from .060" to .280", with material yields meeting API specifications. Along with round tubing, the mill is designed to add shaping capabilities at a later date. The mill is capable of producing pipe at speeds up to 200 feet per minute.
December 2012 - T&H Lemont Completes Shipment of a Coiled Tubing Mill
T&H Lemont has recently shipped a Model WU45-12 High Frequency Welded Coiled Tubing Mill for a customer in the United States. Our customer is a leading producer of Coiled Tubing for shipment worldwide. The end product is used for increasing productivity in existing oil and natural gas mills. The tube size range of the WU45 mill is from 1.750" to 4.500" OD round tubing. The customer had selected a 4.500" maximum OD to be prepared for any future expansion of coiled tubing specifications. With five breakdown stands, the mill is designed for high strength materials with maximum yields of 120,000 ksi. While the mill is designed to produce tubing at speeds of up to 200 feet per minute, actual production rates are limited by the auxilliary equipment. This is the second mill of this type purchased from T&H Lemont by this customer. His purchasing descision was based on the success and efficiency of the original mill.
Inductotherm Group offers advanced technology for the engineering, manufacturing and service of thermal processing equipment used in the melting, heating, heat treating, forging, galvanizing, coating, cutting and welding of metals. Bringing together 40 companies and 38 manufacturing facilities located in 19 countries, Inductotherm Group delivers innovative products throughout the world. Customers rely on T&H Lemont, Inductotherm, Inductoheat, Thermatool, Radyne, Consarc and other trusted brands in the Inductotherm Group to provide outstanding equipment and services.
Please check here for details
^Back to top