摘要:
A single chip microcomputer has a memory formed by an EPROM, which stores the program which controls the microprocessor of the microcomputer. The EPROM has a memory containing an array of memory elements (M-ARY), which are addressed by word and data lines controlled by address signals from corresponding decodes (X DCR, Y DCR). In addition, the memory has dummy word and data lines for addressing dummy elements (DMY, DMX). By selecting the dummy (word or data) line, and having the other lines (word or data) deselected, the dummy elements can be tested, thereby permitting testing of the memory even though the other memory elements are not erasable.
摘要:
In order to provide austenitic single crystal stainless steel having preferable stress corrosion cracking resistance, strength, and irradiation induced embrittlement resistance so as to extend life of nuclear reactor core structure which is used under a high radiation dose environment, a method is disclosed, which comprises the steps of homogeneously dispersing carbides into a parent phase of the austenitic single crystal stainless steel by a two step solution heat treatment, and subsequent an ageing heat treatment after rapid cooling for precipitating fine carbides.
摘要:
An object of the present invention is to provide a steam turbine blade made of a martensite steel having high strength and high toughness, and a low pressure steam turbine and a steam turbine power generating plant using the steam turbine blades. The present invention is characterized by a steam turbine blade made of a martensite steel containing C of 0.13 - 0.40 %; Si less than 0.5 %; Mn less than 1.5 %; Ni of 2 - 3.5 %; Cr of 8 - 13 %; Mo of 1.5 - 4%; at least one kind of Nb and Ta of 0.02 - 0.3 % in total; V of 0.05 - 0.35 %; and N of 0.04 - 0.15 %, a steam turbine and a steam turbine power generating plant using the steam turbine blades.
摘要:
A single chip microcomputer has a memory formed by an EPROM, which stores the program which controls the microprocessor of the microcomputer. The EPROM has a memory containing an array of memory elements (M-ARY), which are addressed by word and data lines controlled by address signals from corresponding decodes (X DCR, Y DCR). In addition, the memory has dummy word and data lines for addressing dummy elements (DMY, DMX). By selecting the dummy (word or data) line, and having the other lines (word or data) deselected, the dummy elements can be tested, thereby permitting testing of the memory even though the other memory elements are not erasable.
摘要:
A precipitation hardening martensitic stainless steel is provided with excellent mechanical property and corrosion resistance and contains, by mass, 0.1% or less of C; 0.1% or less of N; 10.0% ~ 15.0% of Cr; 10.0% ~ 15.0% of Ni; 0.5% ~ 2.5% of Mo; 1.0% ~ 3.0% of Al; 1.0% or less of Si; 1.0% or less of Mn, and the rest is Fe and inevitable impurities. A steam turbine long blade (10) is made of the precipitation hardening martensitic stainless steel.
摘要:
Disclosed is a turbine blade including a turbine blade substrate (63) including an iron-base alloy; an erosion shield plate (61) including a Co-base alloy; and a shim (62) including a Ni-Fe alloy, in which the erosion shield plate (61) is fixed to a leading edge of the turbine blade substrate (63) with the shim (62) therebetween by an electron beam welding. Thus, a turbine blade having a highly reliable, bonded portion of an erosion shield, and a turbine rotor and a steam turbine using the turbine blade are provided.
摘要:
It is an objective of the present invention to provide a precipitation-hardening martensitic stainless steel having well-balanced properties of high mechanical strength, high toughness and good corrosion resistance properties. There is provided a precipitation-hardening martensitic stainless steel comprising: 0.10 mass% or less of C; 13.0 to 15.0 mass% of Cr; 7.0 to 10.0 mass% of Ni; 2.0 to 3.0 mass% of Mo; 0.5 to 2.5 mass% of Ti; 0.5 to 2.5 mass% of Al; 0.5 mass% or less of Si; 0.1 to 1.0 mass% of Mn; and the balance including Fe and incidental impurities, in which the mass% content of the Ti (represented by [Ti content]), the mass% content of the Al (represented by [Al content]) and the mass% content of the C (represented by [C content]) satisfy relationships of "0.5 ≤ [Ti content] ≤ 2.5" and "0.5 ≤ [Al content] + 2[C content] ≤ 2.7".
摘要:
A turbine rotor with high reliability of strength. The turbine rotor includes two rotors (61,62) which are connected at the butted portions of the rotors (61,62) via a weld (6) without forming penetration beads. Specifically, the turbine rotor includes a rotor (61) for low pressure, a rotor (62) for high pressure, and a center hole (64) formed at a center portion of the turbine rotor. The rotors (61,62) for low pressure and for high pressure are integrated together into a steam turbine rotor by welding respective ends of the rotors (61,62) to each other. The respective ends of the rotors (61,62) are in contact with each other via at least two contact faces (31,32,33) in a radial direction and an axial direction of the turbine rotor. At least parts of the respective ends are welded together.
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 (61, 62) which are connected at the butted portions of the rotors (61, 62) via a weld (6) without forming penetration beads. Specifically, the turbine rotor includes a rotor (61) for low pressure, a rotor (62) for high pressure, and a center hole (64) formed at a center portion of the turbine rotor. The rotors (61, 62) for low pressure and for high pressure are integrated together into a steam turbine rotor by welding respective ends of the rotors (61, 62) to each other. The respective ends of the rotors (61, 62) are in contact with each other via at least two contact faces (31, 32, 33) in a radial direction and an axial direction of the turbine rotor. At least parts of the respective ends are welded together.