| Patent Number |
Title Of Patent |
Date Issued |
| 7416622 |
Method and system for thermal treatment of rails |
August 26, 2008 |
| In order to obtain a fine-lamellar perlite structure in the edge region of the heads of rails (1), especially hot-rolled rails for carriageways or railways, by specific thermal treatment during cooling from the rolling heat without the formation of bainite, precooling (12) occurs in orde |
| 7340932 |
Wire-rolling apparatus |
March 11, 2008 |
| A rolling-mill cooling unit has a cooling-unit conveyor transporting fanned-out loops of wire in a transport direction toward a coiler spaced downstream from the cooling-unit conveyor and serving to organize the fanned-out loops of wire into coils or bundles. A feeder conveyor extend |
| 7241086 |
Apparatus for machining pipe ends, especially for cutting connecting threads |
July 10, 2007 |
| A thread cutter for pipe ends has a tool head rotating coaxially with respect to a fixedly clamped pipe end and provided at tool holders in the form of radial sliders. Actuators which are parallel to the rotation axis are mounted on a frame shiftable with respect to the head for sync |
| 7188502 |
Method and device for changing the rolls of a tube welding stand |
March 13, 2007 |
| The invention relates to a method for changing sets of top rolls, lateral rolls, and a bottom roll, and mounted in chocks of a welding stand of a continuously operating longitudinal tube welding machine. The inventive method enables the rolls to be changed faster, using less appliances. |
| 7159435 |
Apparatus for straightening pipe |
January 9, 2007 |
| A straightening apparatus for large diameter thick wall pipe has an expander head at one end of a beam inserted into the pipe and having a radially displaceable saddle positionable at any selected location along the beam. The saddle may be shifted along the beam by a linear actuator |
| 7150851 |
Powder press |
December 19, 2006 |
| An apparatus for pressing a mass into a coherent workpiece has a mold body defining a chamber and a mold liner in the chamber having a generally cylindrical pressing surface centered on an axis, directed in one radial direction, and defining a mold cavity and an opposite surface directed |
| 7116428 |
Method and device for measuring wall thickness of a pipe in a pipe-rolling mill |
October 3, 2006 |
| A method and device for measuring the wall thickness of a pipe in a pipe-rolling mill wherein a Fabry-Perot interfero-meter has its mirror spacing set by providing an input to a linear activity for one of the mirrors from a controller receiving an input from a photodiode at the outpu |
| 7096706 |
Drawing apparatus and method of operating same |
August 29, 2006 |
| A single carriage of the drawing apparatus for pulling a continuous metal workpiece through a drawing die is displaceable back and forth by a linear electronic motor drive. A coil forms a supply upstream of the die which can pay off a length of the workpiece to form a loop adapted to be |
| 7082799 |
Drive system for a rolling mill |
August 1, 2006 |
| The invention concerns a drive system (1) for a rolling mill, especially for a cold pilger rolling mill with at least one roll frame (1) movable back and forth, at least one crank drive (3) which has a crank arm (4) with a counterweight (5) for at least partial compensation of the in |
| 7073362 |
Drive for cold pilger rolling stand |
July 11, 2006 |
| A drive for reciprocating a roll stand of a pilger cold-rolling system has a crank rotatable about an axis transverse to a reciprocation direction of the stand and a tie rod having an outer end journaled on the stand and an inner end eccentrically journaled on the crank so that rotation |
| 7062946 |
Guide roller system for guiding the rods between the finishing stands of rod rolling mills |
June 20, 2006 |
| A roller guide for the guidance of the wire or rod between the finish rolling mill stands of a wire or rod rolling line. The guide has a guide roller pair which are mutually juxtaposed and journaled on free ends of pivot arms of double arm levers. The lever journals are connected with a |
| 7043953 |
X-H rolling method for parallel-flange steel sections (supports) |
May 16, 2006 |
| A method of X-H rolling of a parallel flange steel structural shape or beam with an H cross section using a compact rolling group. In the first universal mill frame the vertical roll have roll surfaces inclined to one another at an angle up to 10.degree. whereas in the second universal m |
| 7024899 |
Roll assembly for a rolling mill |
April 11, 2006 |
| A roll shaft assembly especially for a planetary cross roll rolling mill for tubing and the like has the roll shaft and mill roll connected by a conical centering arrangement and a screw, preferably coaxial therewith with the torque transfer being effected by tooth rings on the ends of t |
| 7004005 |
Method and apparatus for producing pipe from metal plate |
February 28, 2006 |
| A bending press for bending metal plates for the production of large diameter pipe has an articulation for the upper die member which reduces bending moments as applied to the bending sword or ram. The articulation can be between the upper die and the foot of the bending sword and a |
| 6976377 |
Method of and apparatus for producing tubes of metal |
December 20, 2005 |
| In the planetary skew rolling blooms to form seamless metal tubing or pipe the internal tool is retracted at the leading and/or trailing end of the tubular bloom to allow the rolls to seal the end or ends and prevent coolant from entering the rolled tubing or bloom. The internal tool is |
| 6957567 |
Method and system for the controlled application of fluid pressure to a load, especially for pre |
October 25, 2005 |
| A method and system for the controlled application of fluid pressure of a load, such as a large pipe to be pressure tested utilized small pressure converters which are operated by a common controller at the hydraulic side to fill and pressurize the pipe. One pressure converter is deceler |
| 6945083 |
Method of and apparatus for determining the eccentricity of a hollow billet |
September 20, 2005 |
| The eccentricity of a hollow billet is measured at the outlet of an inclined-roll rolling mill by launching an ultrasonic pulse into the billet from a laser of a measuring device and measuring the transit time of an echo pulse also utilizing a laser and an optical analyzer. The measu |
| 6837090 |
Rolling line for the continuous rolling of strand-shaped products |
January 4, 2005 |
| A rolling train for the continuous rolling of strand shaped products has at each rolling location a pair of fixed stations which are closely spaced and have rails such that a mill stand at one station can be displaced away from the rolling line and be replaced at that location by a mill |
| 6810742 |
Method of and an apparatus for determining the speed of sound in a material |
November 2, 2004 |
| The speed of sound c is determined in a material as a function of the temperature T by heating an end of an elongated sample body of the material of the temperature and determining the time difference for the receipt of echoes from two reflective zones at the heated end. The opposite |
| 6715332 |
Method of drawing metal workpieces and drawing unit for a drawing machine |
April 6, 2004 |
| A drawing apparatus for drawing metal and articles has at last one drawing carriage and a linear motor complex which determines the pattern of movement of that carriage and hence of the drawing operation. |
| 6701766 |
Plate-stretching grip head |
March 9, 2004 |
| A metal-stretching grip head has a row of parallel upper plates wholly to one side of a plane and having front ends and rear ends and a row of parallel lower plates wholly to an opposite side of the plane and having front ends forming at the plane with the front ends of the upper plates |
| 6688152 |
Modular drawing apparatus and drawing |
February 10, 2004 |
| A drawing apparatus is assembled from modular units utilizing modular path-forming members and holder modules which can carry the drawing die and drawing carriages shiftable on the guide modules. The drives for the carriages are individual linear motors whose stationary components are th |
| 6684675 |
Drawing machine |
February 3, 2004 |
| An apparatus for drawing a strand has a frame extending in a longitudinal direction, a pair of substantially identical linear motors each having a primary fixed on the frame, and a movable secondary slidable along the respective primary in the direction. The primaries extend parallel to |
| 6651473 |
Cold-rolling seamless copper tubing |
November 25, 2003 |
| Seamless tubing of a nonferrous material is made by continuously and concomitantly advancing a tubular workpiece of the nonferrous material along an axis through a rolling station, radially squeezing the workpiece in the station between external rolls and an internal mandrel to radially |
