Kabushiki Kaisha Toshiba

Tokyo Shibaura Electric Co., Ltd.

Tokyo Shibaura Denki Kabushiki Kaisha

Shinzo Sugai

Fumio Mori

Nobuaki Nakashima

Yasuhisa Ohtake

Eiichi Watanabe

Emiko Higashinakagawa

Mitsuo Kawai

Tatsuyoshi Aisaka

Hiroshi Watanabe

Atsushi Yamamoto

Hideo Suzuki

Tsutomu Okutomi

Michihiko Inaba

Tsuneyo Seki

Yoshiaki Ouchi

Masaharu Kanto

Takashi Kuze

Tsuyoshi Yasui

Kiyoshi Osabe

Tadayoshi Kinoshita

Hiroshi Yamazoe

Mituharu Hagiwara

Shigemi Yamane

Masaru Nikadio

Reiko Watanabe

Kazuya Tujimoto

A shadow mask with a low thermal expandability of an Fe--Ni-based alloy and a high surface hardness is disclosed. This shadow mask includes a mask main body consisting of an Fe--Ni-based alloy containing iron and nickel as main constituents, a large number of fine electron beam apertures formed in the mask main body, and a surface layer formed on the surface of the mask main body and containing at least one compound selected from the group consisting of iron nitride, iron nickel nitride, iron boride, iron nickel boride, iron silicide, and iron nickel silicide.

Shadow mask and cathode ray tube

An IC package and LSI package having a lead frame of a copper alloy that contains 0.1 to 1% by weight of chromium, 0.01 to 0.5% by weight of zirconium and that has partial discolored regions caused by unbalanced precipitation of the zirconium distributed thereon at a rate of 2 grains/100 cm.sup.2 or less is disclosed. The lead frame is, for example, obtained from an alloy that contains 0,005% by weight of sulfur or less. The lead frame has high reliability, can be produced in high yield and has high electrical conductivity.

IC package and LSI package using a lead frame formed of a

A vacuum interrupter comprises a vacuum container which includes an insulation tube made of ceramics and having openings at both ends thereof, and sealing metals for hermetically sealing the openings respectively. In the vacuum container, a pair of contacts are disposed so that these contacts can detachably contact to each other. The composition of the material constituting at least one of the sealing metals comprises 25 to 55 wt % of Ni, 0.02 to 1.0 wt % of Si and substantially the residual amount of Cu. Preferably, the composition further comprises 0.02 to 1.5 wt % in total of Si and Mn and/or 5.0 wt % or less in total of Fe and Co.

Vacuum interrupter

Fe-Ni based alloy

A lead frame comprising a copper alloy containing 0.1 to 1 % by weight of chromium, 0.01 to 0.5% by weight of zirconium and having partial discolored regions caused by unbalanced precipitation of the zirconium distributed thereon at a rate of 2 grains/100 cm.sup.2 or less. The lead frame is, for example, obtained by an alloy containing 0.005% by weight of sulphur or less. The lead frame has an high reliability, high yield of production and high electrical conductivity.

Lead frame formed of a copper-zirconium alloy

The present invention provides non-magnetic stainless steel which is used as materials for small parts in precision machines and electronic equipment. The non-magnetic stainless steel consists of an iron-based alloy containing 9 to 22% by weight of nickel, 12 to 26% by weight of chromiun, the balance of iron and inevitable impurities. The martensitic area ratio of the iron-based alloy structure is not more than 20%. The stainless steel exhibits excellent workability and is suitable as a raw material for TV electron gun parts and small gears which are formed by strong working such as blanking or the like.

Precision parts of non-magnetic stainless steels

Disclosed is an Invar alloy original sheet for use in the production of a shadow mask, wherein the Invar alloy original sheet has the cleanliness measured by the method regulated in JIS G 0555, of 0.07% or less. Disclosed is also a shadow mask comprising an Invar alloy original sheet having the cleanliness mentioned above. By use of the Invar alloy original sheet of this invention, the problem of non-uniformity and irregurarity of inner wall surface of perforations formed on the original sheet for shadow mask is decreased to a great extent.

Ni-Fe base alloy sheet for use as a shadow mask and a shadow mask

In a thermal head, an electrical and heat insulating layer of glass is formed on a substrate made of ferrie Fe-Cr stainless steel. Fe-Cr stainless steel contains 16 to 18% chromium by weight. Heating resistors having a specific patterns are formed on the electrical and heat insulating layer and electrically connected to the substrate acting as a common electrode. Lead wires of an A.lambda.-Si-Cu alloy, as individual electrodes, are formed on the layer and the heating resistors. The heating resistors and the lead wires are covered by a protective layer.

Thermal head

A cast ingot of an invar alloy is forged, hot-and cold-rolled, annealed and subjected to a controlled rolling to provide a shadow mask plate. An X-ray diffraction pattern is formed in an electron-beam hole-formation surface of the shadow mask plate, and a draft in a controlled rolling step is so controlled that the 'g' value is 2 or more. The 'g' value is given as

Shadow mask

A lead frame consists of a copper alloy containing 0.1 to 1% by weight of chromium and 0.001 to 0.5% by weight of zirconium and having a precipitate with a grain size of 0.5 to 50 .mu.m distributed therein at a rate of 1,000 to 10,000 grains/mm.sup.2. The lead frame is manufactured by casting a copper alloy containing 0.1 to 1% by weight of chromium and 0.001 to 0.5% by weight of zirconium by continuous casting, and performing rolling, a solution treatment, a cold working, and an age-hardening. The lead frame has an excellent bonding performance with an Au wire, hardness and bending strength, and is inexpensive.

Lead frame and method for manufacturing the same

A bimetal is disclosed having a high, rapid deflection over a specified temperature range, including a high expansion metal alloy component having a high thermal expansion coefficient that changes rapidy at 50.times.10.sup.-6 /.degree.C. or greater at a temperature of between about 100.degree. C. and 250.degree. C. and containing from 15-30% by weight of manganeses, the balance of iron. The second component has a substantially constant thermal expansion coefficient regardless of the temperature change, and is preferably a stainless steel. These bimetals are used in circuit breakers, thermal protectors and the like.

Method for manufacturing bimetal

A bimetal is disclosed having a high, rapid deflection over a specified temperature range, including a high expansion metal alloy component having a high thermal expansion coefficient that changes rapidly at 50.times.10.sup.-6 /.degree. C. or greater at a temperature of between about 100.degree. C. and 250.degree. C. and containing from 15-30% by weight of manganese, the balance of iron. The second component has a substantially constant thermal expansion coefficient regardless of the temperature change, and is preferably a stainless steel. These bimetals are used in circuit breakers, thermal protectors and the like.

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Yokohama, Japan

Shinzo Sugai