摘要:
A tin-lead alloy solder is provided which exhibits high joint strength under conditions which are likely to induce fatigue fracture. The tin-lead alloy solder comprises 15-80 wt. % lead, 0.1-5 wt. % silver, 0.1-10 wt. % antimony, and 0.0005-0.3 phosphorus, the balance being tin.
摘要:
Discloses an aluminium brazing paste which not only has excellent preservability and coating performance but also reveals excellent brazing characteristics; Said aluminium brazing paste according to this invention comprises, per 100 parts by weight of aluminum-containing metal powder with 10 to 500 µm of mean particle size for aluminium brazing, of 0.5 to 15 parts by weight of flux and 30 to 80 parts by weight of a liquid polyisobutylene with 300 to 1500 of average molecular weight and/or its hydrogenated product.
摘要:
Discloses an aluminium brazing paste which not only has excellent preservability and coating performance but also reveals excellent brazing characteristics; Said aluminium brazing paste according to this invention comprises, per 100 parts by weight of aluminum-containing metal powder with 10 to 500 µm of mean particle size for aluminium brazing, of 0.5 to 15 parts by weight of flux and 30 to 80 parts by weight of a liquid polyisobutylene with 300 to 1500 of average molecular weight and/or its hydrogenated product.
摘要:
An image projector has a lamp unit 23 having a high-pressure mercury vapor discharge lamp 21 and a parabolic mirror 22. To the high-pressure mercury vapor discharge lamp 21, a driving system 24 applies an alternating voltage such that wandering of a cathode luminescent spot generated in the vicinity of a tip of each of the discharge electrodes of the high-pressure mercury vapor discharge lamp 21 is suppressed, the frequency being within the range of 20- 42 kHz. This construction allows to prevent flicker in a projected image of a liquid crystal projector and the like, and therefore achieves high quality in the projected image.
摘要:
An image projector has a lamp unit 23 having a high-pressure mercury vapor discharge lamp 21 and a parabolic mirror 22. To the high-pressure mercury vapor discharge lamp 21, a driving system 24 applies an alternating voltage such that wandering of a cathode luminescent spot generated in the vicinity of a tip of each of the discharge electrodes of the high-pressure mercury vapor discharge lamp 21 is suppressed, the frequency being within the range of 20- 42 kHz. This construction allows to prevent flicker in a projected image of a liquid crystal projector and the like, and therefore achieves high quality in the projected image.
摘要:
A metal halide lamp is made by coating the inner surface of a luminous tube made of quartz glass with hafnium oxide, uranium oxide, hafnium oxide partially stabilized with yttrium oxide or uranium oxide partially stabilized with yttrium oxide by introducing therein a vapour of metal chelate containing hafnium (Hf), uranium (U) or yttrium (Y) and oxygen (O₂), nitrogen suboxide (N₂O) or ozone (O₃) as a reaction gas, and sealing the inside of the luminous tube with a halogenide of alkali metal, mercury and argon.
摘要:
A metal halide lamp is made by coating the inner surface of a luminous tube made of quartz glass with hafnium oxide, uranium oxide, hafnium oxide partially stabilized with yttrium oxide or uranium oxide partially stabilized with yttrium oxide by introducing therein a vapour of metal chelate containing hafnium (Hf), uranium (U) or yttrium (Y) and oxygen (O₂), nitrogen suboxide (N₂O) or ozone (O₃) as a reaction gas, and sealing the inside of the luminous tube with a halogenide of alkali metal, mercury and argon.