Abstract: A breakout prediction method includes: a step of inputting a dimension of a solid product withdrawn from a mold in a continuous casting machine; a step of detecting a temperature of the mold by a plurality of thermometers embedded in the mold; a step of executing interpolation processing on the detected temperatures detected by the plurality of thermometers according to the dimension of the solid product; a step of calculating, based on the temperatures calculated by executing the interpolation processing, a component in a direction orthogonal to an influence coefficient vector obtained by principal component analysis as a degree of deviation from during a normal operation in which a breakout has not occurred; and a step of predicting a breakout based on the degree of deviation.

Abstract: A control method for a continuous casting machine, includes: estimating, by on-line real-time system, a flow state of molten steel in a mold by using an operation condition of a continuous casting machine and temperature data on the molten steel in the mold; calculating, by on-line real-time system, a molten steel flow index based on the estimated flow state of the molten steel, the molten steel flow index being a factor of mixing of an impurity into a casting inside the mold; and controlling the operation condition of the continuous casting machine such that the calculated molten steel flow index is within an appropriate range.

Abstract: An operation guidance method includes: predicting a state in a blast furnace when a current operation state is retained in a future, by using a physical model that is able to calculate the state in the blast furnace; and displaying, on an output device, an oxygen balance in a raceway region, a carbon balance in an entire furnace, and an oxygen balance derived from iron oxide in the entire furnace, when the state in the blast furnace is predicted.

Abstract: An appearance inspection system is equipped with illumination devices that irradiate light, and retaining tools that retain an object to be inspected. Light receiving devices are disposed at locations (irradiated locations) which are on the retaining tools and are irradiated with the light emitted by the illumination devices. A determination unit of the appearance inspection system determines that an “inspection condition is not satisfied” when a measured value of a luminance measured with the light receiving devices is less than or equal to a preset reference value. Grayscale charts may be provided instead of the light receiving devices.

Abstract: A device includes: an input device configured to receive an input of measurement results of a temperature and components of molten steel in a tundish of continuous casting facilities, measurement results of a width, a thickness, and a casting speed of a cast slab casted in the continuous casting facilities, and molten steel flow rate distribution in a mold; a model database configured to store a model expression and a parameter related to solidification reaction of molten steel in the mold; a convertor configured to convert a molten steel flow rate in the mold into a heat conductivity parameter; and a calculator configured to estimate a solidified shell thickness in the mold based on temperature distribution of the mold and steel in the mold calculated by solving a three-dimensional transient heat conduction equation using the measurement results.

Abstract: A method for controlling a hot metal temperature, includes: a first control loop for calculating a target value of pulverized coal ratio such that a hot metal temperature, predicted by a physical model that is able to calculate conditions inside a blast furnace, falls within a preset target range; and a second control loop for calculating pulverized coal flow rate manipulation quantity to compensate for a deviation between the pulverized coal ratio target value and a current pulverized coal ratio actual value.

Abstract: A breakout prediction method includes: a step of inputting a dimension of a solid product withdrawn from a mold in a continuous casting machine; a step of detecting a temperature of the mold by a plurality of thermometers embedded in the mold; a step of executing interpolation processing on the detected temperatures detected by the plurality of thermometers according to the dimension of the solid product; a step of calculating, based on the temperatures calculated by executing the interpolation processing, a component in a direction orthogonal to an influence coefficient vector obtained by principal component analysis as a degree of deviation from during a normal operation in which a breakout has not occurred; and a step of predicting a breakout based on the degree of deviation.

Abstract: A continuously casting method including arranging temperature measuring elements according to specified conditions, selecting as evaluation targets for temperatures of copper plates on a wide face of mold values measured by the temperature measuring elements arranged closer to a center in a width direction of a cast slab than short sides of the cast slab under continuous casting at levels of 50 mm or more lower in a slab withdrawal direction than a meniscus of a molten steel in a mold, and adjusting a casting condition such that a standard deviation of the values measured over the width direction of the copper plates on the wide face of mold at a same level in the slab withdrawal direction is 20° C. or lower.

Abstract: An in-mold solidified shell thickness estimation apparatus includes: an input device; a model database configured to store a model formula and a parameter related to a solidification reaction of a molten steel inside a mold of a continuous casting facility; and a heat transfer model calculator configured to estimate an in-mold solidified shell thickness by calculating temperature distributions of the mold and of the molten steel inside the mold by solving a three-dimensional unsteady heat transfer equation. The heat transfer model calculator is configured to correct errors in a temperature of a mold copper plate and in an amount of heat removed from the mold, by correcting an overall heat transfer coefficient between the mold copper plate and the solidified shell.

Abstract: An electronic device includes a slot, and a backboard that is disposed on the depth side in the slot and is electrically connected to a printed circuit board inserted in the slot. The electronic device further includes a casing having the slot formed therein, the casing being configured to accommodate therein at least part of the backboard, and a cover member configured to be attachable to and removable from the casing. When attached to the casing, the cover member together with the casing forms the external appearance of the electronic device. The cover member is attached to the backboard integrally.

Abstract: A device includes: an input device configured to receive an input of measurement results of a temperature and components of molten steel in a tundish of continuous casting facilities, measurement results of a width, a thickness, and a casting speed of a cast slab casted in the continuous casting facilities, and molten steel flow rate distribution in a mold; a model database configured to store a model expression and a parameter related to solidification reaction of molten steel in the mold; a convertor configured to convert a molten steel flow rate in the mold into a heat conductivity parameter; and a calculator configured to estimate a solidified shell thickness in the mold based on temperature distribution of the mold and steel in the mold calculated by solving a three-dimensional transient heat conduction equation using the measurement results.

Abstract: A continuously casting method including arranging temperature measuring elements according to specified conditions, selecting as evaluation targets for temperatures of copper plates on a wide face of mold values measured by the temperature measuring elements arranged closer to a center in a width direction of a cast slab than short sides of the cast slab under continuous casting at levels of 50 mm or more lower in a slab withdrawal direction than a meniscus of a molten steel in a mold, and adjusting a casting condition such that a standard deviation of the values measured over the width direction of the copper plates on the wide face of mold at a same level in the slab withdrawal direction is 20° C. or lower.

Abstract: A control method for a continuous casting machine, includes: estimating, by on-line real-time system, a flow state of molten steel in a mold by using an operation condition of a continuous casting machine and temperature data on the molten steel in the mold; calculating, by on-line real-time system, a molten steel flow index based on the estimated flow state of the molten steel, the molten steel flow index being a factor of mixing of an impurity into a casting inside the mold; and controlling the operation condition of the continuous casting machine such that the calculated molten steel flow index is within an appropriate range.

Abstract: An appearance inspection system is equipped with illumination devices that irradiate light, and retaining tools that retain an object to be inspected. Light receiving devices are disposed at locations (irradiated locations) which are on the retaining tools and are irradiated with the light emitted by the illumination devices. A determination unit of the appearance inspection system determines that an “inspection condition is not satisfied” when a measured value of a luminance measured with the light receiving devices is less than or equal to a preset reference value. Grayscale charts may be provided instead of the light receiving devices.

Abstract: An electronic device includes a slot, and a backboard that is disposed on the depth side in the slot and is electrically connected to a printed circuit board inserted in the slot. The electronic device further includes a casing having the slot formed therein, the casing being configured to accommodate therein at least part of the backboard, and a cover member configured to be attachable to and removable from the casing. When attached to the casing, the cover member together with the casing forms the external appearance of the electronic device. The cover member is attached to the backboard integrally.

Abstract: A set of bolt holes through which bolts are inserted are formed in left and right sides of a large end section. The bolt holes are substantially parallel to the axis of a rod section and are located such that the centers of the bolt holes are each displaced from the center of a cut surface. When a first mandrel and a second mandrel are press fitted to a joint hole of the large end section and are cut and split, the area of contact of the second mandrel on the movable stage side with the inner wall of the joint hole is set greater than the area of contact of the first mandrel on the fixed stage side with the inner wall of the joint hole.

Abstract: A set of bolt holes through which bolts are inserted are formed in left and right sides of a large end section. The bolt holes are substantially parallel to the axis of a rod section and are located such that the centers of the bolt holes are each displaced from the center of a cut surface. When a first mandrel and a second mandrel are press fitted to a joint hole of the large end section and are cut and split, the area of contact of the second mandrel on the movable stage side with the inner wall of the joint hole is set greater than the area of contact of the first mandrel on the fixed stage side with the inner wall of the joint hole.

Abstract: A liquid crystal display apparatus includes a backlight unit including a light guiding plate that includes a light emitting surface, a light source and a back cover that covers the light guiding plate and the light source and has an opening in a region thereof that faces the light emitting surface, a liquid crystal display panel including an array substrate provided to face the light emitting surface, a counter substrate and a liquid crystal layer, a frame-shaped case that covers a peripheral portion of the counter substrate and peripheral walls of the back cover, and an input device provided on the case to face the counter substrate and having an entry surface, wherein the back cover includes a plurality of projecting portions which project even the light emitting surface, face a side edge of the liquid crystal display panel, and support the input device via the case.

Abstract: A liquid crystal display apparatus includes a backlight unit including a light guiding plate that includes a light emitting surface, a light source and a back cover that covers the light guiding plate and the light source and has an opening in a region thereof that faces the light emitting surface, a liquid crystal display panel including an array substrate provided to face the light emitting surface, a counter substrate and a liquid crystal layer, a frame-shaped case that covers a peripheral portion of the counter substrate and peripheral walls of the back cover, and an input device provided on the case to face the counter substrate and having an entry surface, wherein the back cover includes a plurality of projecting portions which project even the light emitting surface, face a side edge of the liquid crystal display panel, and support the input device via the case.