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JP3848401 |
To improve the control accuracy of a slab temp., in the temp. control in a continuous heating furnace. In the temp. control method in the continuous heating furnace 3 having plural continued control zones by using an evaluating function,...
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JP2006225734 |
To provide an apparatus for continuously induction-preheating an annular member in combination with a continuous heating furnace.This induction preheating apparatus comprises: a charging chamber 13 which has a function for controlling th...
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JP3832880 |
To obtain a device for driving a work and to allow this work to travel in such a manner as to obviate the occurrence of the deformation in a test at the time of subjecting a work to hardening with high efficiency and a method for control...
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JP2006183063 |
To provide a temperature control method by which in a heating furnace used for producing a steel forged product, desired temperature in the furnace over the wide temperature range such as 200-1,000°C is obtained and is easily and accura...
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JP2006183108 |
To provide a heat treatment apparatus for steel material and a method for producing the steel material using the heat treatment apparatus by which in the case of performing the heat treatment with induction-heating, such heat treatment a...
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JP3825187 |
To provide a solid wire for gas shielded arc welding with which stable arc is obtained in low current welding and which is also excellent in feed property. This wire consists of 0.02-0.12% C, 0.1-0.8% Si, 0.5-2.0% Mn and 0.0005-0.010% N ...
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JP2006152429 |
To provide a high frequency heat treatment method with which even in the case of changing the temperature at hardening timing side in every moment, the diffusion length of C can further accurately be obtained.This high frequency heat tre...
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JP2006152430 |
To provide a high frequency heat treatment method with which the hardening can be performed by satisfying the condition of solid solution quantity of C and residual austenite quantity at temperature control side can be estimated.This hig...
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JP2006144126 |
To provide a system for monitoring a high frequency hardening process.The system is composed of an induction coil 16, a control circuit 12, a monitoring circuit 14 and a quenching system 18. The induction coil heats a workpiece 22. The c...
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JP2006124791 |
To provide a high-frequency heat treatment method by which the quality of an article can be stabilized by accurately calculating diffused length of C while considering the change of austenizing temperature at the time of rapid heating.Th...
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JP2006125829 |
To provide a method for monitoring a furnace apparatus without needing stoppage of the furnace apparatus or waiting up to a PM (preventive maintenance) cycle while releasing an employee from a temperature rise rate during operation of th...
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JP3799656 |
To suitably execute the combustion control of a continuous heating furnace for a steel material having the projecting and the recessing shapes, such as a beam blank. At the time of predicting a steel material temp. with a steel material ...
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JP3796808 |
To optimize the combustion control in a continuous heating furnace at high accuracy while reducing calculating load at the time of minimizing the operational index, such as the unit requirement of a fuel, as a target. A steel material te...
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JP2006104490 |
To provide a combustion control method of a continuous heating furnace capable of controlling the combustion so that the heating furnace extraction temperature reaches a target value by correctly grasping the slab temperature in the furn...
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JP2006083412 |
To provide a high-frequency completely-hardening method with the use of temperature control, in order to provide a predetermined quality after heat treatment.The induction heat treatment device is directed at heating the surface layer of...
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JP3783396 |
To reduce distortion generating in a steel plate and moreover to improve the precision of a stop temperature of the steel plate after cooling by symmetrizing a temperature distribution in the plate thickness direction of the upper and re...
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JP3783640 |
To provide a cooling method to cool a metal strip. When controlling the cooling of the metal strip in a cooling zone in which gas-jet cooling and mist-cooling are freely switched, an area in which the temperature of the metal strip reach...
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JP3772362 |
PURPOSE: To facilitate temp. control in each unit furnace and to improve thermal efficiency of a heating furnace by controlling flow rate of escaped exhaust gas, in the heating furnace providing plural heat regenerative type alternating ...
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JP2005298941 |
To provide a sheet temperature control method in the case of continuously annealing a still sheet by which the deviation from the reference of the sheet temperature caused in the changing part of the annealing condition between the prece...
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JP2005281809 |
To provide a method for cooling a coil, which determines an optimal cooling time for each of various coils.The method for cooling a coil comprises the steps of: obtaining a difference equation based on the heat balance of a coil-cooling ...
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JP2005274297 |
To simply measure the temperature history of a steel plate conveyed to a heat treatment furnace.This heat treatment furnace is equipped with a sample steel plate 5 attachable to and detachable from a steel plate 2 conveyed to a continuou...
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JP2005226100 |
To provide a method for controlling a temperature of a steel strip in a continuous annealing furnace, which prevents the strip temperature from going out of tolerance caused by a sudden strip-temperature alteration.The controlling method...
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JP3710572 |
To provide a control device in a heating furnace, in which slabs are heated to a temp. suitable to rolling under energy saving condition in good accuracy corresponding to the rolling schedule based on the rolled producing quantity in a c...
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JP2005220432 |
To provide a plate temperature cooling control method in a cooling zone capable of suppressing insufficient cooling or supercooling of a steel plate traveling through the cooling zone of a continuous heat treatment equipment.In the plate...
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JP2005211963 |
To provide a parameter correcting method in which a model parameter in a steel production process is corrected to an optimum value in practicable computation time.The model parameter in the steel production process is corrected within a ...
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JP2005213624 |
To provide a continuous heat treatment method of a metal strip capable of performing continuous heat treatment of the metal strip without occurrence of any line trouble or degradation of the operation efficiency when performing the conti...
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JP2005211945 |
To provide a method for cooling a high temperature steel plate, which method can be applied to a longitudinally profiled steel plate having various cross sections without changing the flow rate of water to be poured on the steel plate du...
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JP2005187854 |
To provide a method for deciding the optimum spheroidizing-annealing condition without needing high cost and long time.This method is performed, by which heat physical value data base 28, cementite-formation data base and material data b...
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JP3694966 |
To extract a metallic slab without insufficient heating at the timing of extraction that sure joining is executed by extracting the 2nd and succeeding slabs at extracting pitches after extracting a 1st metallic slab so that the metallic ...
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JP3687278 |
To reduce the fuel consumption of a heating furnace, and to improve the quality of products. In a method for extracting a work to be heated in controlling the combustion of a heating furnace, the skid mark is calculated based on the heat...
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JP3686813 |
To provide a discharging device in a continuous heating furnace in which a steel material can smoothly be transferred without damaging a carrying roller for laying the steel material. In the discharging device fitted to the continuous he...
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JP2005146393 |
To provide a heat treatment device of a steel material and a steel material manufacturing method in which the surface temperature and the internal temperature of the steel material are matched with the target values with excellent accura...
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JP3680543 |
To provide a method for deciding the withdrawal pitch in a heating furnace for hot-rolled material. At the time of deciding the extending time of heating, in the case of needing the heating extending time by (t) min to to material, whose...
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JP2005133158 |
To provide a decarburized layer depth estimating method capable of estimating the depth of a decarburized layer in a heat-treated rolled steel by obtaining the depth by a formula for estimation, a method for controlling the depth of the ...
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JP2005120409 |
To provide a manufacturing method for reducing variations of strength in a longitudinal direction of a steel plate, without needing an analytical technique requiring much calculation such as a complicated temperature control and an itera...
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JP2005113219 |
To improve the production efficiency, in a heat treatment system in which a nitrogen-rich layer is formed in primary heat treatment and quenching is applied in secondary heat treatment, at lower temperature than the heating temperature i...
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JP2005105291 |
To provide a steel manufacturing method capable of appropriately performing the heat treatment of steel while grasping the in-furnace temperature distribution.In a method for charging the steel into a heat treatment furnace for heat trea...
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JP2005089785 |
To provide a method for efficiently manufacturing a high-tensile-strength steel sheet having superior strength and toughness, and a tensile strength as 570 MPa or higher, through controlling the quantity of an electric power to be suppli...
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JP2005076051 |
To provide a method for manufacturing a high-strength steel sheet which is hot-rolled and acceleratingly-cooled or quenched, and has such superior cut-cracking resistance as not to cause cracks due to cutting on a cut plane even after ha...
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JP2005076050 |
To provide a method for manufacturing a high-strength steel sheet including a high-strength sour-resistant steel sheet for a line pipe, which prevents degradation of strength and DWTT (drop weight tear test) characteristics, and can redu...
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JP2005076986 |
To speed up a heat treatment by enabling the rapid rise of an index value of carbon potential after starting the heat treatment.In this method for controlling the atmosphere of a heat treatment furnace, the index value of carbon potentia...
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JP2005068509 |
To provide a method for simulating forging and normalizing whereby an optimum soaking time in a forging and normalizing step can be easily and precisely estimated.The method for simulating forging and normalizing is one which simulates f...
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JP2005068553 |
To provide a heat treatment apparatus and a method for producing steel which realize heat treatment for obtaining the the steel having a target property by accurately matching the surface temperature and the inner temperature of the stee...
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JP2005029890 |
To provide a method for controlling the temperature of a plating bath for a hot dip galvanized steel sheet where, even in the case operating conditions are varied, both the stabilization in the temperature of a sheet to be impregnated in...
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JP2005021984 |
To propose a controlled cooling method for a thick steel plate which can uniform temperature distribution on the whole face of the thick steel plate both laterally and longitudinally and which has a high cooling rate on the whole, in the...
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JP2005024303 |
To provide a method for measuring surface temperatures of steel products and to provide its apparatus capable of using inexpensive industrial water containing impurities without having to use clean water.The surface temperature measuring...
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JP2005015873 |
To provide a material-temperature control system in a continuous strip-material processing line, which can be applied when a transportation speed for a strip material has been changed, and improves the quality of a product by precise mat...
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JP3629127 |
To prevent the slip of bridle roll and hearth roll and to contrive the stable operation in an annealing equipment, in the continuous annealing equipment of a strip. In the case of using σ1 for unit tension of the strip at the roll inlet...
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JP2004315949 |
To calculate data in a continuous annealing line of ironworks, in order to know whether there is a possibility of realizing such a temperature control as to satisfy the condition of upper limit LH_i and lower limit LL_i of the control te...
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JP2004269909 |
To subject a steel material to heating treatment with good accuracy, in the heating treatment of the steel material using a correcting apparatus and an induction heating apparatus.The method for heating the steel material is provided wit...
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