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91. 发明专利

JPS5894674A SEALING APPARATUS FOR LIQUID METAL BATH 失效
公开(公告)号：JPS5894674A
公开(公告)日：1983-06-04
申请号：JP19172081
申请日：1981-12-01
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAKAGAWA YOSHIKIYO
IPC分类号： F16J15/40 , C21D1/773 , C21D9/56 , C23C2/32 , C23C14/56 , F16J15/16
摘要： PURPOSE:To prevent occurrence of splash in a liquid metal bath and evaporation of a liquid metal, by disposing means for imparting vibration to a material to be treated at the regions near the surface of liquid metal in the bath on both of the atmospheric side and the vacuum side of the bath, and also providing inert-gas injection nozzles at a position near the surface of liquid metal on the vacuum side of the bath. CONSTITUTION:A chamber 4' for introducing band steel 1 into a liquid metal bath 5 is filled with the same gas as that in a reducing furnace 2. In the chamber 4', there are provided a deflector roll A and a pair of pinch rolls B and also provided magnetic poles C, D for imparting vibration to the band steel 1. Similarly, in an auxiliary vacuum chamber 8, there are provided a deflector roll H and a pair of pinch rolls G. Further, magnetic poles C', D' are disposed on the opposite sides of the band steel 1 at a position between pinch rolls F and G, and the magnetic poles C', D' incorporate therin gas injection nozzles N, N' respectively. Here, arrangement is such that the same amount of gas as that injected from the gas injection nozzles N, N' is discharged from the vacuum chamber 8 via an exhaust pipe 12 and pressure in the chamber 8 is kept lower than the vapor pressure of the liquid metal in the bath 5.

92. 发明专利

JPS57158379A STRUCTURE OF EVAPORATING SOURCE FOR CONTINUOUS VACUUM DEPOSITION 失效
公开(公告)号：JPS57158379A
公开(公告)日：1982-09-30
申请号：JP4179481
申请日：1981-03-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAKAGAWA YOSHIKIYO
IPC分类号： C23C14/24
摘要： PURPOSE:To improve the yield of plating materials and operation time by contg. a specific sealing material in an evaporating source vessel in a molten state, and forming a plating material liquid layer on the liquid surface of the sealing material in the space formed of a cover and the sealing material. CONSTITUTION:For example, Pb which is sealing metal and Zn which is plating metal are contained in an evaporating source vessel 4, and are heated and held to and at the temp. in the stage of vacuum deposition of Zn. This creates the state wherein the alloy liquid phase 27 consisting essentially of Zn exists on the alloy liquid phase 20 consisting essentially of Pb. Zn vapor particles scatter like arrows 10, 11 from the liquid surface 8 of the liquid phase 27, and arrive directly at the lower surface 14 of a steel strip 13 and condense there, thus forming a palating layer. In this case, the leading end part of a cover 25 is immersed in the liquid phases 20, 27 and therefore the temp. of the cover 25 is high and the vapor particles do not condense on the wall surface and rather reevaporate, thereby forming no deposits. This vessel 4 permits extremely less leakage of the Zn vapor particles to the outside, and since it does not form a large amt. of deposits, the long-term continuous operation is made possible.

93. 发明专利

JPS5597458A MANUFACTURE OF ONE SIDE MOLTEN METAL PLATED PRODUCT 失效
公开(公告)号：JPS5597458A
公开(公告)日：1980-07-24
申请号：JP303179
申请日：1979-01-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： NISHIKAWA SEIJI , FURUKAWA HEIZABUROU , YAMAZAKI DAIZOU , WADA TETSUYOSHI , ITANO SHIGEO , NAKAGAWA YOSHIKIYO , IMAMURA JIYUSABUROU
IPC分类号： C23C2/00 , C23C2/32
摘要： PURPOSE:To perform continuous plating on one-side of a steel strip by a method wherein electromagnetic coils are installed in a molten metal plating tank to allow energized coils to generate magnetic force to raise molten metal, which is made to contact one-side of steel strip which is running. CONSTITUTION:Molten metal tank 2 is installed with electromagnetic coils 4 contained in heat resistant housing 5 such as ceramic, from the top near the surface of molten metal tank 2. When the coils 4 are energized with multiple phase AC current, magnetic field in M direction induces movable magnetic field from the lower electrode coil to upper electrode coil. This causes magnetic field in F direction to move. This action causes the molten metal 2 to move in f direction so that raised portion is formed on the surface of the bath. This elevated metal is made to contact the lower surface of steel strip 1 which is running, so that molten metal plating is performed. The contact area of the steel strip 1 and the molten metal 2 is curved by the positioning roller 3 depression, and oxidation-preventive gas is jetted from the nozzles 6. Both means prevent excessive bath rise, so that the top surface of the steel strip 1 is protected from being plated with penetrated molten metal.

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