摘要:
A method for producing a compact of rare earth alloy powder of the present invention includes: a powder-filling step of filling rare earth allow powder in a cavity formed by inserting a lower punch into a through hall of a die of a powder compacting machine; and a compression step of pressing the rare earth alloy powder while applying a magnetic field, the steps being repeated a plurality of times. When the (n+1)th (n is an integer equal to or more than 1) stage compression step is to be carried out, the top surface of a compact produced in the n-th stage compression step is placed at a position above the bottom surface of a magnetic portion of a die.
摘要:
A method for producing a compact of rare earth alloy powder of the present invention includes: a powder-filling step of filling rare earth allow powder in a cavity formed by inserting a lower punch into a through hall of a die of a powder compacting machine; and a compression step of pressing the rare earth alloy powder while applying a magnetic field, the steps being repeated a plurality of times. When the (n+1)th (n is an integer equal to or more than 1) stage compression step is to be carried out, the top surface of a compact produced in the n-th stage compression step is placed at a position above the bottom surface of a magnetic portion of a die.
摘要:
A method for manufacturing a sintered magnet includes the steps of producing a green compact of powder for the sintered magnet, machining the green compact with a wire-saw, and sintering the green compact.
摘要:
Provided is a vane tip clearance management structure for a gas turbine which allows a vane tip clearance to be confirmed easily at the time of completing assembly. For this purpose, there are provided: a casing (3) rotatably supporting a rotor (2); stator vane retainer rings (11, 12, and 13) and a turbine vane ring (16) provided to have predetermined clearances from tips of rotor vanes (10 and 15) fitted in multiple steps to the rotor (2) inside in the radial direction of the casing (3); guide frames (26) penetrating the casing (3), the stator vane retainer rings (11, 12, and 13) and the turbine vane ring (16) in the radial direction and being supported by stepped portions (21a, 22a, 23a, and 24a); and rods (25) movably supported by the guide frames (26) and abutting on the tips of the rotor vanes (10 and 15). Clearances (C1 and C2) are measured based on the amounts of movement of the rods (25) relative to the guide frames (26).
摘要:
A plate-like-object manufacturing method, plate-like objects, a gas-turbine combustor, and a gas turbine, in which degradation in the cooling performance can be suppressed, the time required for manufacturing a gas-turbine combustor can be shortened, and deterioration of the working environment can be prevented are provided. A plate-like-object manufacturing method includes a step of forming a plate-like object by stacking a plurality of plates and arranging a plurality of channels, through which a cooling medium flows, side-by-side between the plurality of plates; and a step of arranging a plurality of the plate-like objects side-by-side in a direction in which the channels are arranged, butting the plurality of plate-like objects against each other, and performing welding at an abutment section. The channels adjacent to the abutment section extend along the abutment section and have a greater dimension in the direction in which the channels are arranged, as compared with that of other channels.
摘要:
A silicon resin (7) is applied to the outer wall (1b) of the transition piece (1) subjected to the thermal barrier coating by caulking the cooling holes (2a) provided in the inner wall (1a) by a resin (4). Then, the transition piece (1) is heated in an atmosphere furnace in order to burn or decompose the resin (4). A part of the silicon resin (7) applied to the outer wall (1b) of the transition piece (1) is decomposed or evaporated by the heating to be discharged to the atmosphere in the furnace, but a part of the silicon resin (7) remains and protects the outer wall (1b). Then, since the remaining silicon resin (7) protects the outer wall (1b), it is possible to reduce oxidization of the outer wall (1b) or an unevenness in color caused by the oxidization. Accordingly, it is possible to remarkably reduce the time required to improve an external appearance of the transition piece (1) after the ashing process for the transition piece (1). Moreover, the heat treatment method according to the present invention is not limited to the application to the ashing process for the transition piece (1), but can be applied to the whole product required to be subjected to the heat treatment.
摘要:
A turbine casing structure having an outer casing, and an inner casing disposed in the outer casing, comprising: a bush disposed in a concave portion formed in the inner casing; an eccentric shaft inserted into a communication hole formed in the outer casing, and having a front end disposed in contact with the bush; and a fixing member disposed in engagement with the eccentric shaft, and fixed to the outer casing.
摘要:
The method of the present invention includes a step of preparing a rare earth magnet 22 disposed for forming a cylinder 22a, a first magnetizing step of applying a first external magnetic field H1 to the rare earth magnet 22, thereby forming a first region R1 magnetized from an inner side to an outer side of the cylinder 22a and a second region R2 magnetized from the outer side to the inner side, and a second magnetizing step of applying a second external magnetic field H2 so that an external magnetic field component forming an angle of more than 0° and less than 50° with a direction of the external magnetic field component applied in the first magnetizing step to a boundary between the first region R1 and the second region R2.
摘要:
A method of forming an ink-jet image containing the steps of: applying a pre-treatment solution to a textile; and ejecting droplets of an ink-jet ink on the textile through an ink-jet head, wherein the ink-jet ink comprises a disperse dye, a dispersing agent, water and a water-soluble organic solvent; the pre-treatment solution comprises an organic acid; and a pH value of the pre-treatment solution is smaller than a pH value of the ink-jet ink.
摘要:
A thermal spraying method includes forming a coating layer of heat resistant resin on the whole spray area of the metal surface, securely fixing a test piece of the same material as that of the metal as a constituent of heat resistant equipment on the surface of the coating layer, spraying a heat shield coating material onto the test piece, detaching the test piece from the surface of the coating layer, inspecting the condition of spray and setting spray conditions, removing the coating layer and, under the above set spray conditions, spraying the heat shield coating material onto the metal surface to thereby form a heat shield coating layer.