Nippon Steel Corporation

Mitsubishi Electric Corporation

Mitsunobu Abe

Hiroshi Takechi

Hisashi Gondo

Kunihiko Komiya

Matsuo Usuda

Yuichi Sato

Hitoshi Kubota

Toshio Yamada

Munetsugu Matsuo

Tsuyoshi Kawano

Hideo Shingu

Toshihiro Inoue

Kazuo Namba

Hiroshi Hayakawa

Ikushi Yoshida

Tsuyoshi Mikoda

Ryoseki Katsutani

Yoshio Saito

A communication system according to the present invention includes a plurality of ad hoc communication networks each formed by one or more communication units and one gateway and includes a monitoring server that monitors the ad hoc communication networks. The monitoring server determines on the basis of a monitoring result of load states of the gateways and a monitoring result of a congestion state of radio traffic whether it is necessary to carry out load distribution control for moving a communication unit subordinate to a first gateway to be subordinate to a second gateway set around the first gateway and, when determining that it is necessary to carry out the load distribution control, instructs at least one gateway of the first gateway and the second gateway to broadcast-deliver a signal including control information and instructing reselection of a gateway set as a participation destination.

Communication system and automatic metering system

A method for forming non-equilibrium and/or metastable metallic or non-metallic powder, foil or fine wire material into a solid body comprises charging the material into a metal container, subjecting the metal container containing the material to rolling at a temperature at which the inherent properties of the material are maintained, and thereafter removing the metal container.

Method for the manufacture of formed products from powders, foils, or

A process for producing a cold rolled steel strip having excellent workability by a short-time continuous annealing, which process is constituted by hot rolling a low carbon steel slab of steel having a carbon content of from about 0.003 to 0.08% into a steel strip; cold rolling the hot rolled steel strip; rapidly heating the cold rolled steel strip to a recrystallization temperature range at a heating rate not less than 40.degree. C./second; slowly heating the thus rapidly heated steel strip to an annealing temperature at a heating rate ranging from 5.degree. to 30.degree. C./second; annealing the thus slowly heated steel strip at an annealing temperature T which is no lower than 700.degree. C. and no higher than the A.sub.3 transformation temperature and for an annealing time t no shorter than [8-0.03 (T-680)] seconds and no longer than [80-0.15 (T-680)] seconds, initially slowly cooling the thus annealed steel strip at a cooling rate less than 50.degree. C./second, and then rapidly cooling the strip at a cooling rate not less than 50.degree. C./second from a temperature T.sub.Q ranging from higher than 600.degree. C. to no higher than [T-0.027 (T-680)(.sqroot.t+23.7)].degree. C. to an over-ageing temperature range; and subjecting the thus cooled steel strip to an over-ageing treatment at a temperature ranging from 300.degree. to 500.degree. C. for a period of time ranging from 10 seconds to 5 minutes.

Process for producing deep-drawing cold rolled steel strips by

A process of producing a cold rolled killed steel sheet with good cold formabilities particularly by continuous-annealing, and more particularly to a process of producing cold rolled steel sheet and strip having particularly enhanced deep drawability by controlling the chemical composition and compositional proportions of the killed steel as well as the high temperature coiling after a hot rolling operation.

Process for producing cold rolled steel sheet and strip having improved

Anti-vibration steel materials containing not more than 0.1% of carbon and not more than 0.5% of manganese and having an .alpha. value of not lower than 55, said value being a product of the yield point or stress at 0.2% strain and the grain size number, and a method for producing the same which comprises hot rolling a steel slab, billet or bloom containing not more than 0.1% of carbon, not more than 0.5% of manganese, giving not more than 10% of strain to the hot rolled steel, annealing the hot rolled steel thus strain given at a temperature not lower than its recrystallization temperature but not higher than its A.sub.3 transformation point for at least one minute and controlling the .alpha. value as defined herein to a value not more than 55.

Anti-vibration steel material and a production method therefor

A method for levelling a metal strip or sheet in which the metal strip or sheet is subjected to repeated bending by means of a roll arrangement of two or more rolls having a diameter of at least 600 times the thickness of the metal while cooling the metal strip or sheet from at least about 210.degree. C to about 50.degree. C at a cooling rate not lower than a critical cooling rate C as defined by the following formula but not higher than 200.degree. C/sec., ##EQU1##

Method for levelling a metal strip or sheet

A vibration damping steel containing C .ltoreq. 0.10% and Mn .ltoreq. 0.40% as the essential constituents and having a lower yield point or 0.2% proof stress of 7-28kg/mm.sup.2 with the degree of refinement of the steel being not less than 0.18 while still maintaining the specific gravity at 7.859g/cm.sup.3 or less, and a process for producing the same. This steel material is particularly suited for use in items which to produce and transmit vibration and noise.

Growing community of inventors

Tokyo, Japan

Mitsunobu Abe