Mitsubishi Gas Chemical Company, Inc.

Sony Corporation

Nippon Steel Corporation

Other

Jfe Steel Corporation

Samsung Electronics Co., Ltd.

Teruo Takeuchi

Yoshiaki Inoue

Toshio Komatsu

Yoshio Yoshikawa

Yasuo Sugihara

Chohachi Sato

Keisuke Fukumizu

Ichiro Saito

Takeshi Kubota

Hideaki Takahashi

Yasuo Sato

Yoshihiko Oda

Kazuhiro Inoue

Hiroaki Kato

Hideaki Watanabe

Takeshi Harada

Hideki Matsuoka

Reiko Sugihara

Takashi Kashiba

Kunikazu Tomita

Kazuo Koyama

Kenji Tahara

Satoru Tanaka

Hidetoshi Hatakeyama

Yasuharu Sakuma

Yasuyuki Takada

Atsushi Itami

Ryoichi Yoshihara

Hidechika Wakabayashi

Takahide Shimazu

Isamu Yoshino

Yujiro Miyauchi

Akira Hosomi

Nobuo Yamagami

Junko Baba

Kazuo Fujinami

Noriko Kubo

Tatsuo Amaike

Yuki Akamatsu

Yoshio Noguchi

Masahiro Ogushi

Toshihiro Komeya

Toshihiro Kuroki

Takashi Arakawa

Hidenori Egoshi

A steel sheet for an inner magnetic shield has a ratio of the anhysteretic magnetic permeability in the rolling direction to the anhysteretic magnetic permeability in the transversal direction, which is not higher than 0.7 or not lower than 1.4, preferably not higher than 0.5 or not lower than 2.0. A higher value of the two anhysteretic magnetic permeability values in the rolling direction and in the transversal direction is not lower than 18000. The inner magnetic shield formed of the particular steel sheet has a substantially truncated pyramid body which has a pair of short side members of a screen and a pair of long side members of a screen. The short side members are joined to the long side members at edge portions of the truncated pyramidal inner magnetic shield. The direction, in which the anhysteretic magnetic permeability of the steel sheet is the higher value, corresponds to the horizontal plane direction of the short side member. In addition, the direction, in which the anhysteretic magnetic permeability of the steel sheet is the higher value, corresponds to as required to the horizontal plane direction of the long side member.

Steel sheet for inner magnetic shield and method of producing the same, inner magnetic shield, and color cathode ray tube

A steel sheet for preparing a heat shrink band effective for preventing the color drift is provided by a steel sheet having 24 kg/mm or higher of yield stress and 400 or higher of the product between the permeability &mgr; under a magnetic field of 0.3 Oe and the sheet thickness.

Steel sheet for heat shrink band effective for preventing color drift

Provided are a high strength cold rolled steel sheet and a high strength plated steel sheet possessing improved geomagnetic shielding properties, that is, having a high relative permeability in a d.c. magnetic field around 0.3 Oe, a process for producing the same, and an explosion-proof band or an outer magnetic shielding material, for television cathode-ray tubes, using the steel sheet. An ultra low carbon steel, which has a carbon content of not more than 0.0060% and has been subjected to solid solution strengthening utilizing silicon and magnesium without relying upon precipitation strengthening, is deoxidized with silicon so that aluminum is substantially absent in the steel. Alternatively, when the ultra low carbon steel is deoxidized with aluminum, boron is added to inhibit the precipitation of AlN. Next, the deoxidized steel is finish rolled at 750 to 980.degree. C., cold rolled with a reduction ratio of 60 to 90%, and then annealed in the temperature range of 750.degree. C. to the Ac.sub.3 point in a continuous annealing equipment or an in-line annealing type continuous galvanizing equipment to bring the ferrite grain diameter in the metallographic structure to 10 to 200 .mu.m.

High-strength cold rolled steel sheet and high-strength plated steel

A 0.1 to 0.5 mm-thick plated steel sheet having high coercive force and magnetic flux density is provided by hot rolling a slab comprising by weight carbon: 0.01 to 0.09%, silicon: not more than 1.0%, phosphorus: not more than 0.3%, manganese: not more than 1.5%, sulfur: not more than 0.04%, aluminum: not more than 1.0%, and nitrogen: not more than 0.01% with the balance consisting of iron and unavoidable impurities, cold rolling the hot rolled sheet, annealing the cold rolled sheet to prepare a steel sheet having an average grain diameter of 3 to 15 .mu.m, temper rolling the steel sheet with a reduction ratio of not more than 3%, and plating the temper rolled sheet with chromium or nickel. This enables the provision of a magnetic shielding material having no significant drift and very good electron beam landing properties.

Magnetic shielding material for television cathode-ray tube and process

Disclosed is a method for preserving an adhesive tape or an article using the same which comprises enclosing an adhesive tape or an article using the same in a container having a gas barrier property, substantially capable of removing both oxygen and moisture, and then, sealing the container to remove substantially both oxygen and moisture from the container.

Method for preserving adhesive tape and method for preserving article

A flux-free method for bonding a member which is at least partially metallic to another member is provided including preserving the at least partially metallic member in a container having a low gas permeability, together with a packet containing a rust-proof composition; and bonding the at least partially metallic member with the other member by using a filler material.

Method for bonding a member having metal

The solder bonding is conducted by applying a postflux, which contains halogen compounds in the ratio of 0.2% or less as the amount of halogen, over a metal surface, which is the portion to be bonded by solder, of a member including metal accommodated in a gas-impermeable container in a hermetically sealed manner together with a rust-proof agent packet. The method of the present invention prevents, in an extremely simple way and at a low cost, the oxidation of the metal surface by retaining the member including the metal under a reductive atmosphere in which no oxygen, moisture or corrosive substances actually exist, and in which reductive gas co-exists with the material including the metal member, and the use of the flux containing a small amount of halogen easily enables good bonding properties of the solder. Accordingly, it is unnecessary to remove the flux by organic halogen based solvents after the solder bonding, the cleaning steps may be simplified and cost reduction may be promoted.

Method of bonding a metal by solder

The present invention relates to novel oxygen absorbent comprising as main ingredients a 1,2-glycol, glycerine or sugar alcohol with the oxygen absorbent materials.

Oxygen absorbent

There are disclosed an oxygen absorbent comprising boron or a reducing boron compound, an alkaline substance and a carrier, an oxygen absorbent parcel formed by enclosing said oxygen absorbent in a permeable packaging parcel, a food package and a package of a metallic or electronic product or part containing said oxygen absorbent parcel.

Growing community of inventors

Tokyo, Japan

Teruo Takeuchi