| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 072069000 | With modification or control of temperature of work, tool or machine, or with lubrication thereof | 7 |
| 20080302154 | Stir Forming Apparatus - An apparatus for forming a workpiece to a desired, non-planar configuration are provided. At least one friction stir forming tool, having a shoulder and a pin, is used to urge the workpiece to the desired configuration and friction stir form the workpiece. The forming tool can urge the workpiece against a contour surface of a die or a shoulder that is opposite the structural member from the tool. Thus, the forming tool plasticizes a portion of the workpiece and urges the workpiece to the desired configuration. In addition, the material properties of the workpiece can be improved by the friction stir processing. | 12-11-2008 |
| 20100000281 | Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel - a billet made of high Cr-high Ni alloy, which contains, by mass percent, 20 to 30% of Cr, 30 to 50% of Ni, and at least one element selected from Mo and W with a value “Mo+0.5W” of 1.5% or more is heated under conditions satisfying the following formula (1), and then the billet is pierced and rolled using an inclined roll type piercing mill with a roll gouge circumferential speed of 2.28 m/sec or higher. This prevents melted rash on the inner surface and lengthens the plug life. | 01-07-2010 |
| 20110302980 | CHARGING DEVICE FOR A BUSH EXPANDER FOR PUNCHED BUSH BLANKS MADE OF STEEL, FOR EXAMPLE, AND METHOD FOR FORGING PUNCHED BUSH BLANKS - The invention relates to a charging device for a bush expander for punched bush blanks, having a charging weight of, in the warm state, many hundreds of tonnes, for example 200 to 800 tonnes, preferably 200 to 600 tonnes, and to a method for forging punched bush blanks. | 12-15-2011 |
| 20120017662 | METHOD FOR PRODUCING SEAMLESS STEEL TUBE AND PRODUCTION FACILITY THEREFOR - In the production of a seamless steel tube by piercing-rolling a heated billet with a piercing machine to form the billet into a hollow blank, and without reheating the hollow blank, by successively subjecting the hollow blank to elongation-rolling with an elongation-rolling mill and diameter-adjusting rolling by a diameter-adjusting rolling mill, it is made possible to prevent non-uniform longitudinal temperature distribution from occurring in a steel tube after diameter-adjusting rolling and enable energy saving to be accomplished by including a step 1 of measuring a temperature of the hollow blank along a longitudinal direction at the exit of the elongation-rolling mill; and a step 2 of spraying water onto the hollow blank to cool the hollow blank at the entrance of the diameter-adjusting rolling mill according to a measured longitudinal temperature distribution of the hollow blank, whereby the longitudinal temperature distribution of the hollow blank becomes uniform. | 01-26-2012 |
| 20120279268 | Forging of an Annular Article with Electric Induction Heating - Roll forging of an annular article of manufacture is accomplished with electric induction heating of the workpiece simultaneously during the roll forging process as required to keep the workpiece at optimum forging temperature during the roll forging process. | 11-08-2012 |
| 20130074563 | TUBE ROLLING PLANT - The present invention teaches rolling a seamless tube, typically with a large diameter. The system comprises a furnace for heating billets produced by continuous casting. The system comprises a piercing mill for longitudinally piercing the heated billets to obtain a pierced blank. The system comprises an expanding-elongating mill for expanding the pierced blank diameter and for elongating the pierced blank to obtain a semi-finished tube. The system comprises a continuous main rolling mill with adjustable rolls for mandrel-rolling a semi-finished tube. The system comprises a fixed-roll extracting-reducing mill positioned downstream of the main rolling mill. The extracting-reducing mill extracts the semi-finished tube from the mandrel, reducing the diameter to a predetermined value close to that desired for the finished tube. The system comprises an adjustable-roll sizing mill to adjust the radial position of the rolls and define the diameter of the outgoing tube. | 03-28-2013 |
| 20160074922 | METHOD AND DEVICE FOR FORMING A WORKPIECE | 03-17-2016 |
