| Patent Number |
Title Of Patent |
Date Issued |
| 6666929 |
Process for the improvement of the magnetic characteristics in grain oriented electrical silicon |
December 23, 2003 |
| It has been found out that in the laser treatment for the control of the magnetic domain sizes in grain oriented electrical silicon steel sheets, by optimizing some essential parameters of the treatment such as specific radiation energy, the distance among the scribed traces, the scannin |
| 6568462 |
Austenitic stainless steel strips having good weldability as cast |
May 27, 2003 |
| A process for the production of austenitic stainless steel strips having as case a good weldability, comprising the operations of: solidification in a mold of a continuous casting apparatus with twin counterrotatng rolls, a strip having a thickness comprised between 1 to 5 mm and having |
| 6554908 |
Process for pickling stainless steel in the absence of nitric acid and in the presence of chlori |
April 29, 2003 |
| Process for pickling stainless steel carried out at a temperature of between 20.degree. and 70.degree. C., with the use of a pickling solution containing the following basic ingredients: H.sub.2 SO.sub.4 (free acid): 50 to 200 g/l HF (free acid): 0 to 60 g/l F.sup.- anion (total): 5 |
| 6502626 |
Continuous casting process for producing low carbon steel strips and strips so obtainable with g |
January 7, 2003 |
| A process for the production of low carbon steel strips having a good combination of strength an formability, as cast, and a good weldability after the pickling by usual processes, comprising the following steps: casting, in a twin rolls continuous casting machine (1) comprising pinch |
| 6500328 |
Method for pickling steel products |
December 31, 2002 |
| Method for pickling products made of steel, characterized in that within the pickling bath Fe.sup.3+ is present, directly added in a controlled concentration, or produced in the pickling bath itself by adding an oxidizing agent such as hydrogen peroxide, ozone, permanganates. persulp |
| 6491088 |
Method and device for continuously casting thin metal strips |
December 10, 2002 |
| A disadvantage of continuously casting thin metal strips in a continuous casting plant (1) wherein the casting strand (7) exits the mould (2) in a downward direction and is guided in a vertical strand guide (3) with the help of pairs of driver rolls (4, 5) for supporting and conveying th |
| 6488784 |
Process for the production of grain oriented electrical steel strips |
December 3, 2002 |
| By forming, after the annealing of the continuously cast body, a limited number of precipitates apt to the control of the grain growth, and utilising a cold rolling reduction ratio of at least 70%, it is possible to obtain in a subsequent step of continuous nitriding the direct forma |
| 6471787 |
Process for the production of oriented-grain electrical steel sheet with high magnetic character |
October 29, 2002 |
| A process for the production of oriented-grain electrical steel sheet with high magnetic characteristics, and more precisely a process in which the slab obtained from continuous casting is continuously nitrided by a reaction between aluminium and nitrogen is described. Amount, size and |
| 6431256 |
Surface of a cooling roll for continuous casting machines |
August 13, 2002 |
| A cooling roll having superficial dimples, for continuous casting machines with a pair of counterotating rolls in contact with the cast metal is characterized by the fact that it presents the surface that comes to contact with the cast metal provided with a first and a second dimensional |
| 6406557 |
Process for the treatment of grain oriented silicon steel |
June 18, 2002 |
| During the treatment of electrical steel, a careful combination of heat treatment of the slab with a specific primary recrystallization and nitriding treatment allows for control of the distribution, quantity and dimensions of precipitates in order to obtain a homogeneous precipitation |
| 6390176 |
Funnel geometry of a mold for the continuous casting of metal |
May 21, 2002 |
| A funnel geometry of a mold for the continuous casting of metal, wherein the mold has a pouring portion with cooled long side walls and short side walls, wherein the pouring portion becomes narrower in the shape of a funnel in the casting direction until it reaches the size of the cast |
| 6363998 |
Method for swaying a continuous casting mold |
April 2, 2002 |
| A process for producing the oscillation of a continuous casting mold, especially with the use of a hydraulically driven lifting device. So that the heat transfer to the mold and the formation of the casting shell can be effectively controlled, it is proposed that, for any given strand |
| 6361621 |
Process for the inhibition control in the production of grain-oriented electrical sheets |
March 26, 2002 |
| The production of grain-oriented electrical steel sheets is disclosed wherein grain growth in the steel is inhibited by a method comprising the regulation of the content of sulfur and manganese in the steel strp and the cold rolled strip is continuously nitrided at high temperature. |
| 6361620 |
Process for the inhibition control in the production of grain-oriented electrical sheets |
March 26, 2002 |
| In the production of grain-oriented electrical steel strip, the grain growth inhibition is controlled by balancing the copper, aluminum and carbonium content in order to control the type and quantity of precipitated second phases and obtain optimum grain dimensions during the decarbu |
| 6354365 |
Method for the continuous casting of thin metal products, and apparatus for carrying out the sam |
March 12, 2002 |
| A method for continuously casting thin metal products, the method comprising the operations of pre-heating a pair of refractory plates (7) for the lateral containment of a bath of molten metal constituted of a pair of counter-rotating rolls (1, 2) and of abutting said pair of plates |
| 6341722 |
Feeder of molten metal for moulds of continuous casting machines |
January 29, 2002 |
| The present invention provides a feeder of molten metal for moulds of continuous casting machines comprising a cylindrical body (1) within which a main outflow duct (5) of the molten metal coming from the tundish is formed to which the cylindrical body (1) is connected by means of a |
| 6325866 |
Process for the production of grain oriented silicon steel sheet |
December 4, 2001 |
| A process for the production of grain oriented silicon steel sheet which provides an optimization of the production of conventional, grain oriented silicon steel strips, by the use of an appropriate synergistic combination of the composition levels of some elements and appropriate treatm |
| 6296719 |
Process for the production of grain oriented electrical steel strip having high magnetic charact |
October 2, 2001 |
| In the production of high permeability electrical steel, the control of condition of thin slab continuous casting allows to obtain advantageous solidification structures and precipitates. This, in turn, allows to decritize the process for controlling the grain dimensions and to add n |
| 6221234 |
Method for pickling products of a metal alloy in absence of nitric acid and for recovering exhau |
April 24, 2001 |
| A method for pickling products in a metal alloy containing iron, and products in titanium and alloys thereof, in the absence of nitric acid as an oxidizing agent, and for the recovery of the exhausted solutions, characterized in that the recovery of the exhausted solutions deriving f |
| 6210558 |
Steel pickling process in which the oxidation of the ferrous ion formed is carried out electroly |
April 3, 2001 |
| Stainless steel pickling process in which a pickling solution containing HF and Fe.sup.3+ ions as essential components is used, and wherein the oxidation to Fe.sup.3+ of the Fe.sup.2+ formed during the process in order to maintain the Fe.sup.3+ concentration to the predetermined value, i |
| 6186220 |
Funnel geometry of a mold for the continuous casting of metal |
February 13, 2001 |
| A mold for the continuous casting of metal includes a pouring portion with cooled long side walls and short side walls, wherein the pouring portion becomes narrower in the shape of a funnel in the casting direction until it reaches the size of the cast strand. In the funnel portion, the |
