Class / Patent application number | Description | Number of patent applications / Date published |
072365200 | "Rolling" | 11 |
20090000346 | Shaped direct chill aluminum ingot - Method and apparatus for forming aluminum ingot having shaped ends to avoid alligatoring during rolling. | 01-01-2009 |
20090013750 | APPLICATION METHOD OF CR-PLATED MANDREL BAR FOR HOT ROLLING - The present invention provides an application method of a Cr-plated mandrel bar repeatedly used in mandrel mill rolling by the Mannesmann tube making process. A regeneration treatment is performed to use the mandrel bar again as a tool of like size when an opening width H of a surface defect generated on the mandrel bar by its use in the mandrel mill rolling is not less than 1.5 mm and a depth of the surface defect is in the range of 0.3 mm to less than 2.0 mm. Alternatively, a downsizing treatment is performed to use the mandrel bar again as a tool of a smaller size when the depth of the surface defect generated on the mandrel bar by its use in the mandrel mill rolling is not less than 2.0 mm. The regeneration treatment or downsizing treatment is performed according to conditions or a configuration of the surface defect to achieve repeated application to the mandrel mill rolling, allowing life-extension of the mandrel bar and improvement of cost performance thereof. | 01-15-2009 |
20100005848 | Method for producing duplex stainless steel pipe, method for straightening, method for regulating strength, and method for operating straightener - In straightening a duplex stainless steel pipe on a multi-roll pipe straightener, the value of A defined by the formula (1) is set to not more than 2.0% when it is not necessary to improve the mechanical strength of the pipe, and the value of A is set to more than 2.0% but not more than 3% when it is necessary to improve the mechanical strength of the pipe. Thereby, the mechanical strength of the duplex stainless steel pipe is regulated, | 01-14-2010 |
20100018281 | METHOD OF MANUFACTURING PLUG USED TO PIERCE AND ROLL METAL MATERIAL, METHOD OF MANUFACTURING METAL PIPE AND PLUG USED TO PIERCE AND ROLL METAL MATERIAL - A plug material having a prescribed shape is prepared, the prepared plug material is thermally treated in a heat treatment atmosphere that contains at least 1.0 vol. % oxygen at a heat treatment temperature of at least 950° C. and less than 1050° C. and thus a plug having an oxide scale layer | 01-28-2010 |
20100024513 | METHOD FOR PERFORMING TEMPER ROLLING ON STEEL STRIP AND METHOD FOR MANUFACTURING HIGH TENSILE-STRENGTH COLD ROLLED STEEL SHEET - Temper rolling at a total elongation percentage of 0.1% or more is performed on a steel strip using a temper rolling mill in which at least one roll stand having high roughness work rolls, the center-line averaged roughness Ra of which being in the range of 3.0 to 10.0 μm, is provided, or at least one roll stand having bright rolls is further provided downstream of the above roll stand, and as a result, a predetermined elongation percentage, flatness, and center- line averaged roughness can be imparted even to a steel strip having a yield strength of 340 MPa or more at a rolling load approximately equivalent to that for a mild steel without using a large facility and complicated control. In particular, a high tensile-strength cold rolled steel sheet having an Ra of 0.5 to 3.0 μm and superior die galling resistance is obtained. | 02-04-2010 |
20100031727 | PRODUCTION METHOD OF MULTI-GAUGE STRIPS - The present invention provides a method of producing a multi-gauge strip which has a thick portion and a thin portion which are continuously disposed along its length. The method of producing multi-gauge strips consisting of a relatively thick portion and a relatively thin portion formed along the widthwise direction while continuously transferring a strip material, is characterized by comprising the steps of: primarily forming a strip material by pressing the upper side thereof so as to make a groove in the lower side of the part where a thin portion is to be formed; and secondly forming the resulted strip by pressing the upper side of the primarily formed strip so as to form the part having a groove into a thin portion and the other part into a thick portion. | 02-11-2010 |
20100192660 | METHOD FOR ADJUSTING A STATE OF A ROLLING STOCK, PARTICULARLY A NEAR-NET STRIP - In a method and a control device for adjusting a state of a rolling stock, particularly a near-net strip, defined at least by an out-of-parallel condition and/or a curvature of the rolling stock, the rolling stock is transitioned from an initial into an intermediate state by a roll stand and by impressing a stress onto the rolling stock by an additional processing device, and the rolling stock is transitioned from the intermediate into a final state by at least one processing aggregate. By determining whether rolling stock should be fed into the at least one processing aggregate, the intermediate state requiring a non-zero out-of-parallel condition and/or curvature in order to achieve a predetermined final state, and the roll stand and/or the processing device are controlled and/or regulated as a function thereof to adjust the required intermediate state, the shape reliability of an ultimately parallel, non-curved rolling stock can be increased. | 08-05-2010 |
20100242566 | METHOD FOR A OPERATING A ROLLING MILL TRAIN WITH CURVATURE RECOGNITION - In a multi-stand rolling mill train, a strip successively runs through individual rolling stands. The strip—always as seen in relation to a rolling centre line—is threaded into each of the rolling stands with known respective head offset and inlet-side head pitch, and therefore a strip head emerges with the respective head offset, a respective outlet-side head pitch and a respective outlet-side head curvature. The respective outlet-side head pitch is determined on the basis of respective inlet-side head pitch and pass reduction which takes place in the respective rolling stand. The respective outlet-side head curvature of the strip is determined based on respective measured and further data. The respective outlet-side head curvature is used to determine a respective control intervention for the respective rolling stand and/or the one arranged directly downstream and to drive the corresponding rolling stand in accordance with the respective determined control intervention. | 09-30-2010 |
20120111081 | METHOD OF MANUFACTURING MAGNESIUM ALLOY PROCESSING MATERIALS WITH LOW CYCLE FATIGUE LIFE IMPROVED BY PRE-STRAINING - The present invention relates to a method of manufacturing magnesium alloy processing materials capable of improving low cycle fatigue life. The manufacturing method for magnesium alloy processing materials with improved low cycle fatigue life comprises pre-straining a magnesium alloy processing material which is processed. | 05-10-2012 |
20130067982 | APPARATUS FOR PRODUCING INSERTS FOR STEAM GENERATOR TUBES - An apparatus for producing inserts for steam generator tubes is provided. The apparatus is intended to allow a technically particularly simple production process, and consequently allow particularly high-speed production of inserts. For this purpose, the apparatus includes a winding head with a wire guiding pin, a guiding opening for a former shaft, provided with a number of spiral slots, and a pressure roller, the wire guiding pin, the guiding opening and the pressure roller being arranged in such a way that a tangent of the pressure roller and of a slot of the former shaft and the guiding axis of wire guiding pin substantially coincide. | 03-21-2013 |
072366200 | Between disclosed rollers | 1 |
20100319432 | Process for Producing a Profile from a Flat Metal Strip - The invention relates to a method for the manufacture a profile with a cross-section of different thicknesses from a flat metal strip ( | 12-23-2010 |