摘要:
A power module includes a sealed body in which a semiconductor chip-mounted conductor plate is sealed by a resin in such a manner that a heat dissipating surface of the conductor plate is exposed, a heat dissipating member that is arranged to face the heat dissipating surface, and an insulation layer that is arranged between the sealed body and the heat dissipating member. The insulation layer has a laminated body that is made by laminating an impregnation resin-impregnated ceramic thermal spray film and a bonding resin layer in which a filler having good thermal conductivity is mixed, and that is provided to be in contact with the heat dissipating member and at least the entirety of the heat dissipating surface, and a stress relief resin portion that is provided in a gap between the heat dissipating member and the sealed body to cover an entire circumferential end portion of the laminated body.
摘要:
Dissimilar metal welds including a buttering portion with a small variation in strength distribution in a plate thickness direction are formed by welding two parent materials having at least one of different compositions and different refining conditions through a buttering for alleviating mismatch between one of the different compositions and the different refining conditions of the two members and through a welded metal for joining one of the parent materials and the buttering. The buttering is formed of welding metals laminated in a plate thickness direction, and a dilution ratio of the buttering with the parent materials is 50% or less. The manufacturing method includes performing butt welding on a dummy material formed by increasing a groove depth by providing a member on a bottom side of a welding groove and on parent materials by using the buttering; and processing a groove within a welding metal formed of the buttering.
摘要:
An object of the present invention is to provide a turbine rotor with high reliability of strength. The turbine rotor includes two rotors which are connected at the butted portions of the rotors via a weld without forming penetration beads. Specifically, the turbine rotor includes a rotor for low pressure, a rotor for high pressure, and a center hole formed at a center portion of the turbine rotor. The rotors for low pressure and for high pressure are integrated together into a steam turbine rotor by welding respective ends of the rotors to each other. The respective ends of the rotors are in contact with each other via at least two contact faces in a radial direction and an axial direction of the turbine rotor. At least parts of the respective ends are welded together.
摘要:
A power module includes a sealed body in which a semiconductor chip-mounted conductor plate is sealed by a resin in such a manner that a heat dissipating surface of the conductor plate is exposed, a heat dissipating member that is arranged to face the heat dissipating surface, and an insulation layer that is arranged between the sealed body and the heat dissipating member. The insulation layer has a laminated body that is made by laminating an impregnation resin-impregnated ceramic thermal spray film and a bonding resin layer in which a filler having good thermal conductivity is mixed, and that is provided to be in contact with the heat dissipating member and at least the entirety of the heat dissipating surface, and a stress relief resin portion that is provided in a gap between the heat dissipating member and the sealed body to cover an entire circumferential end portion of the laminated body.
摘要:
A turbine rotor which is easy to manufacture and has a high tolerable temperature is provided. A highly efficient steam turbine power plant is also provided. The turbine rotor is configured from a rotor shaft, an inner rotor disc constructed integrally with the rotor shaft, and an outer rotor disc which is welded to the inner rotor disc via a weld metal part and has a structure for fixing a turbine blade. The outer rotor disc preferably has a cooling hole which extends in an axial direction to penetrate the outer rotor disc over the thickness of the outer rotor disc.
摘要:
A turbine rotor which is easy to manufacture and has a high tolerable temperature is provided. A highly efficient steam turbine power plant is also provided. The turbine rotor is configured from a rotor shaft, an inner rotor disc constructed integrally with the rotor shaft, and an outer rotor disc which is welded to the inner rotor disc via a weld metal part and has a structure for fixing a turbine blade. The outer rotor disc preferably has a cooling hole which extends in an axial direction to penetrate the outer rotor disc over the thickness of the outer rotor disc.