The present invention relates to a steel sheet with improved yellowing resistance and phosphatability, wherein the steel sheet contains 0.5% by weight or more of Mn, and contains 0.01 to 10 mg/m.sup.2 of Ca+Mg, 0.01 to 10 mg/m.sup.2 of P, 0.01 to 20 mg/m.sup.2 of C, and 0.05 to 30 mg/m.sup.2 of O as components excluding a steel component on the surface of the steel sheet after pickling, water rinsing, and drying. According to the present invention, in a manufacturing process of the steel sheet, the surface of the steel sheet is subjected to a chemical conversion treatment for improving phosphatability and yellowing resistance in a water-cooling section or a water-washing section, thereby having an effect of improving the surface quality of products using same and various subsequently treated products.

Provided is a method for forming a multilayer coating film including the following steps (1) to (4): (1) applying a base paint (X) to a substrate to form a base coating film; (2) applying a specific effect pigment dispersion (Y) to the base coating film formed in step (1) to form an effect coating film with a specific dry film thickness; (3) applying a clear paint (Z) to the effect coating film formed in step (2) to form a clear coating film; and (4) heating the uncured base coating film, the uncured effect coating film, and the uncured clear coating film formed in steps (1) to (3) to simultaneously cure these three coating films.

A method for forming a multilayer coated film includes step (1) of applying an aqueous intermediate coating composition (A), step (2) of applying an aqueous base coating composition (B), step (3) of applying a clear coating composition (C), and step (4) of heat-curing the coated films. The coating composition (A) contains a specific hydroxyl group-containing acrylic resin (a1), a specific polyurethane resin (a2), a specific hydroxyl group-containing polyester resin (a3), a melamine resin (a4), and an active methylene-blocked polyisocyanate compound (a5). A ratio of the resin (a1) to the resin (a2) falls within a specific range. The heat-cured coated film of the coating composition (A) has a specific elongation at break, Young's modulus and Tukon hardness. The coating composition (C) contains a hydroxyl group-containing acrylic resin (c1) and an allophanate group-containing polyisocyanate compound (c2).

A busbar assembly of the present invention includes first and second busbars disposed in parallel in a common plane with a gap therebetween, and an insulating resin layer including a gap filling part and an upper surface laminated part, the upper surface laminated part having a first busbar-side upper surface opening that exposes a predetermined area of the upper surfaces of the first busbar and the gap filling part that straddles a boundary therebetween, and a second busbar-side upper surface opening that exposes a predetermined area of the upper surfaces of the second busbar and the gap filling part that straddles a boundary therebetween, a part of the upper surface laminated part between the first and second busbar-side upper surface openings forming a partitioning wall.

A manufacturing method of a home appliance including a hairline according to disclosed embodiment includes forming at least one plating layer on the base material, processing the transverse hairline on the upper surface of the plating layer by tilting the hairline processing wheel at a predetermined angle, and forming a coating layer on the hairline.

This disclosure relates to improved systems and methods for applying coatings to brake rotors. The systems, methods, and techniques described in this disclosure facilitate application of both pretreatment coatings and protective coatings to brake rotors. Other embodiments are disclosed herein as well.

Certain embodiments are described herein that are directed to articles comprising textured coatings that can enhance adhesion of a surface coating. In some examples, the textured coating comprises at least one metal or metallic compound present in a plurality of individual microstructures which can be positioned in different planes in different heights with respect to a reference zero point in the textured coating. In some configurations, a surface coating comprising a repellent material can be disposed onto the textured coating and may infuse into or grip the textured coating to enhance adhesion of the surface coating.

A surface coating for high-grade white and/or gray goods, i.e. items for domestic, sanitary and/or automotive use, in particular housing elements of corresponding devices and machines, as well as decoration, for example those housing elements which specifically have metallic applications and/or elements is disclosed. The surface coating is applied on a metallic or metalized surface structure and has hydrophobic property and/or oleophobic property. The surface coating is defined by a thickness which is less than a structure depth of the surface structure. The height of the surface roughness of the surface structure can thus extend significantly beyond the thickness of the surface coating, so that the surface structure promotes blurring of undesired residues in a kind of intrinsic capillary/channeling effect. Because of the blurring the contour of a soiling is obscured until finally it becomes wholly indistinguishable.

The present invention addresses the problem of providing a flame treatment device which is capable of performing a flame treatment on a metal-based base material without requiring a preheat treatment. For the purpose of solving the above-described problem, a flame treatment device according to the present invention comprises: a first temperature measurement unit which measures the temperature of a metal-based base material before a flame treatment; a control unit which determines the combustion energy of flame on the basis of the temperature before a flame treatment, said temperature having been measured by the first temperature measurement unit, so that the surface temperature of the metal-based base material during the flame treatment is 56° C. or higher; and a flame treatment unit which performs a flame treatment on the metal-based base material on the basis of the combustion energy, which has been determined by the control unit.

Provided is a plated steel plate used for interior materials and exterior materials such as home appliances, construction materials, vehicles, etc., and a method for manufacturing same. The plated sheet plate includes: base steel; a Zn—Mg plating layer formed on the base steel; and a UV-curable film layer formed on the Zn—Mg plating layer, wherein a hairline pattern is formed on a surface of the Zn—Mg plating layer, and the Zn—Mg plating layer includes 8 to 27 weight % of Mg and a balance of Zn and inevitable impurities.