Abstract: A liquid fuel injector includes a cylindrical primary fuel injecting body having a central axis; an annular shroud concentrically placed radially outside; and an annular secondary fuel injecting body placed concentrically with the primary fuel injecting body and the shroud between the primary fuel injecting body and the shroud. A plurality of inner swirlers placed at equal intervals in a circumferential direction are provided in an annular inner air passage formed between the primary fuel injecting body and the secondary fuel injecting body, and a plurality of outer swirlers placed at equal intervals in the circumferential direction are provided in an annular outer air passage formed between the secondary fuel injecting body and the shroud. The primary fuel injecting body is formed as a pressure spray-type injector, and the secondary fuel injecting body and the inner and outer air passages cooperatively constitute an airblast-type injector.

Abstract: A liquid fuel injector includes a cylindrical primary fuel injecting body having a central axis; an annular shroud concentrically placed radially outside; and an annular secondary fuel injecting body placed concentrically with the primary fuel injecting body and the shroud between the primary fuel injecting body and the shroud. A plurality of inner swirlers placed at equal intervals in a circumferential direction are provided in an annular inner air passage formed between the primary fuel injecting body and the secondary fuel injecting body, and a plurality of outer swirlers placed at equal intervals in the circumferential direction are provided in an annular outer air passage formed between the secondary fuel injecting body and the shroud. The primary fuel injecting body is formed as a pressure spray-type injector, and the secondary fuel injecting body and the inner and outer air passages cooperatively constitute an airblast-type injector.

Abstract: A continuous electrolytic treatment can be applied to a metal strip by the method which comprises the steps of (1) passing a metal strip through a narrow treating space formed between horizontal upper and lower electrode devices, each having at least one insoluble electrode, whereby the treating space is divided into two gaps by the metal strip; (2) feeding an electrolytic treating liquid to the gaps through slits each formed in the middle portion of the electrode device in such a manner that the slit horizontally extends across the electrode device at right angles to the direction of passage of the metal strip and directed vertically toward the metal strip, whereby each stream of the treating liquid can be divided into two opposite flows in the gap; and (3) applying an electric current between each electrode and the metal strip.

Abstract: A weldable paint-coated steel sheet having improved corrosion resistance, weldability and workability, comprising a zinc alloy coated steel substrate and a paint coating applied thereon, said paint coating containing zinc alloy powder and at least one of the groups consisting of zinc powder and hard electric conductive powder.

Abstract: Adjustment of temper grades in steel strip for producing tin plate and tin-free steel plate in various temper grades is advantageously carried out by a method wherein the hardness of cold rolled steel strip is adjusted by continuous annealing and the temper grade is thereafter adjusted by subjecting the hardness-adjusted cold rolled steel strip to dry or wet temper rolling.