摘要:
An object of the present invention is to provide air cooling equipment for a heat treatment process for a martensitic stainless steel pipe, which is capable of shortening the time required for the heat treatment process by enhancing the cooling efficiency at the time when the inner surface of steel pipe is air cooled in the heat treatment ent process.Air cooling equipment 100 for a heat treatment process for a martensitic stainless steel pipe P in accordance with the present invention comprises: a conveying device 10 for intermittently conveying the steel pipe P in the direction substantially at right angles to the longitudinal direction of the steel pipe P; and an air cooling device 20 provided with a nozzle 21 for spraying air Bi toward the inner surface of the steel pipe P, the nozzle 21 being arranged along the longitudinal direction of the steel pipe P at a stop position of the steel pipe P intermittently conveyed by the conveying device 10 so as to face to an end of the steel pipe P.
摘要:
The invention offers a magnesium alloy sheet material having excellent plastic processibility and rigidity and a magnesium alloy formed body having excellent rigidity. The sheet material has magnesium alloy that forms the matrix containing hard particles. The region from the surface of the sheet material to a position away from the surface by 40% of the thickness of the sheet material is defined as the surface region, and the remaining region as the center region. Hard particles existing in the center region have a maximum diameter of more than 20 μm and less than 50 μm, and hard particles existing in the surface region have a maximum diameter of 20 μm or less. Because the hard particles existing at the surface side are fine particles, they are less likely to become the starting point of cracking or another defect at the time of plastic processing. Because the hard particles existing in the center region are coarse, they can increase the rigidity of the sheet material.
摘要:
The method of producing a magnesium alloy joined part has the following steps: a joining step of joining a reinforcing material made of metal to a plate material made of magnesium alloy without allowing an organic material to remain at the joined portion and a plastic-working step of performing plastic working on the plate material to which the reinforcing material is joined. A desirable means of joining the reinforcing material to the plate material can be to use an inorganic adhesive. Because the magnesium alloy joined part is formed by a structure in which the reinforcing material is joined to the plate material, in comparison with the case where the reinforcing material is formed by machining or the like, the magnesium alloy structural member can be obtained with high production efficiency.
摘要:
A magnesium alloy member having mechanical properties and corrosion resistance and a method of manufacturing the magnesium alloy member are provided. A magnesium alloy member has a base material made of a magnesium alloy, and an anticorrosive film formed on the base material. The base material is a rolled magnesium alloy including 5 to 11% by mass of Al. By using a base material including a large amount of Al, a magnesium alloy member having excellent mechanical properties and high corrosion resistance can be produced. In addition, by using a rolled material, the number of surface defects at the time of casting is small, and the frequency of compensation processes such as undercoating and puttying can be reduced.
摘要:
A method of manufacturing a thermally-assisted magnetic recording head includes: providing a light source unit including a light source; providing a substrate having a thermally-assisted magnetic recording head section thereon, the thermally-assisted magnetic recording head section including a magnetic pole, a plasmon generator, and an optical waveguide; inserting a metal between the light source unit and the substrate, and thus allowing the metal to be melted; and performing alignment between the light source unit and the thermally-assisted magnetic recording head section under application of pressure in a direction that allows the light source unit and the substrate to approach each other, while maintaining the metal melted.
摘要:
Display unevenness is suppressed. A display device includes pixels (22) arranged in matrix, each including a current-driven type light emitting element (EL) and a drive transistor (Tr3) for supplying a current to the current-driven type light emitting element (EL). The current-driven type light emitting element (EL) is driven by dividing each frame period into a plurality of sub-frame periods for lighting time. The drive transistor is controlled under current write driving using two write currents having a ratio of 1:1/2N and a sum of the two write currents.
摘要:
To compensate for voltage drop on a power supply line. In a display device, pixel data is supplied to each of a plurality of pixels arranged in a matrix form and display is performed. Each pixel has a self-emissive element. A horizontal direction power supply line (horizontal direction PVDD) which supplies a power supply to each pixel is provided, and one end of the horizontal PVDD line is connected to a vertical power supply line (vertical PVDD line) that is connected to an external power supply terminal. Correction data corresponding to a voltage drop to the horizontal PVDD line due to a resistance in the vertical PVDD line is then obtained through a calculation based on pixel data, and the input pixel data is corrected using the correction data so as to reduce the influence of the voltage drop on the pixel current.
摘要:
Noise on a current to be measured is removed. Horizontal power supply lines (PVDD) are arranged in a horizontal direction and supply a current to pixels in respective corresponding horizontal lines. A switch (8) connects a group of the horizontal power supply lines (PVDD) to a first power supply line (PVDDa) or a second power supply line (PVDDb) disposed outside a pixel region in a switchable manner. Only the horizontal power supply lines (PVDD) in a group to which a pixel to be measured belongs are supplied with power from the second power supply line (PVDDb) so as to measure a current of each pixel in the group, and a current flowing into a power source (PVDDa) connected to a group to which other pixels than the pixel to be measured belong is measured, to thereby calculate a pixel current based on a difference between the two measured currents.
摘要:
The method of producing a magnesium alloy joined part has the following steps: a joining step of joining a reinforcing material made of metal to a plate material made of magnesium alloy without allowing an organic material to remain at the joined portion and a plastic-working step of performing plastic working on the plate material to which the reinforcing material is joined. A desirable means of joining the reinforcing material to the plate material can be to use an inorganic adhesive. Because the magnesium alloy joined part is formed by a structure in which the reinforcing material is joined to the plate material, in comparison with the case where the reinforcing material is formed by machining or the like, the magnesium alloy structural member can be obtained with high production efficiency.
摘要:
[Objects] To improve productivity and reduce thermal energy consumption in manufacturing of high purity silicon as a raw material for metallurgical grade pure silicon.[Means to Solve]After conducting a first treatment of either removing boron by water-vapor added plasma arc heating or low-pressure oxygen plasma arc heating upon raw silicon contained in a hearth in a chamber to thereby putting the raw silicon into a high temperature molten state to thereby oxidizing and removing boron by evaporation, or removing phosphorus by electron beam irradiation to thereby putting the raw silicon into a high temperature molten state to thereby remove phosphorus by evaporation in an atmosphere suitable to the treatment; the atmosphere of the chamber is then changed to a vacuum atmosphere suitable to the remaining second treatment, while maintaining the silicon contained in the hearth in its molten state, and the second purification treatment is conducted; whereafter end(s) enriched in impurities is cut off by way of one-way coagulation method to obtain a high purity refined silicon ingot highly free from phosphorus, boron and other impurities.