Abstract: A cooling structure according to an aspect of the present invention includes a press forming member including a groove part and a bank part provided around the groove part, a flow path upper lid positioned on a position covering the groove part of the press forming member, and a joint portion which joins opposing surfaces of the flow path upper lid and the bank part to form a flow path through which a cooling liquid is capable of flowing, in which the press forming member and the flow path upper lid are plated steel sheets having a base steel sheet and having an Al-based plating having a film thickness of 10.0 ?m or more or a Zn-based plating having a film thickness of 5.0 ?m or more, in which a sheet thickness of the plated steel sheets 0.3 mm to 1.2 mm, the joint portion is formed of a joining metal brazing the base steel sheets of the press forming member and the flow path upper lid, and a partial flow path interval is 20 mm or less and a joining width is 3 mm or more.

Abstract: A cooling structure according to an aspect of the present invention includes a press forming member including a groove part and a bank part provided around the groove part, a flow path upper lid which is a flat sheet overlapped at a position covering the groove part of the press forming member and forms a flat cooling surface, and a laser weld which joins opposing surfaces of the flow path upper lid and the bank part to form a flow path through which a cooling liquid is capable of flowing, in which the press forming member and the flow path upper lid are plated steel sheets including a base steel sheet and an Al-based plating, the flow path has a parallel flow path portion in which a plurality of partial flow paths extending along a first direction are arranged in a second direction orthogonal to the first direction, and in the parallel flow path portion, an interval between adjacent partial flow paths is 20 mm or less.

Abstract: The hot dip galvannealed steel sheet of the present disclosure has a base steel sheet and a plating layer. The base steel sheet has a predetermined chemical composition by mass %. An existence ratio ER of internal oxides identified under predetermined conditions by observation of the cross-section of the base steel sheet is 40% or less and an interval I of internal oxides is 300 ?m or more. The hot dip galvannealed steel sheet of the present disclosure is excellent in appearance etc.

Abstract: The hot dip galvannealed steel sheet of the present disclosure has a base steel sheet and a plating layer. The base steel sheet has a predetermined chemical composition by mass %. A standard deviation SD of Mn intensities found utilizing EPMA under a predetermined Condition 1 is 0.40 or less while an interval I of concentrated Mn parts found utilizing EPMA under a predetermined Condition 2 is 50 ?m or less. The hot dip galvannealed steel sheet of the present disclosure is excellent in appearance etc.

Abstract: This battery unit is a battery unit including a battery pack that houses a battery cell, and a water-cooling medium flow path formed outside a bottom surface of the battery pack, in which the water-cooling medium flow path of the battery pack is made of an Al-based plated steel sheet.

Abstract: This battery unit is a battery unit including a battery pack that houses a battery cell, and a water-cooling medium flow path formed outside a bottom surface of the battery pack, in which the water-cooling medium flow path is made of a Zn-based plated steel sheet, an inorganic film or a resin film is formed as a chemical conversion coating film on a surface of the Zn-based plated steel sheet, and the inorganic film contains a Si-based component or a Zr-based component as a main component.

Abstract: A method for manufacturing a gas wiping nozzle provided with a pair of lip parts facing each other and a slit formed as a gas ejection port between the pair of lip parts and blowing gas from the slit against a steel strip pulled up from a plating bath to adjust a thickness of a molten metal film deposited on a surface of the steel strip, which method includes fitting fitting projections provided at one lip part with fitting holes provided at another slip part and fastening the pair of lip parts together in the fitted state, the fitting projections fitted with the fitting holes, two pairs of the fitting projections and the fitting holes provided separated by a distance in a width direction of the steel strip, relative movement between the pair of lip parts in a thickness direction of the steel strip restricted in the fitted state.

Abstract: [Problem] To enable to stabilize the coating weight of the molten metal on the steel strip.