[Problem] There is provided a colored stainless-steel product having excellent viewing-angle color tone discrimination and excellent corrosion resistance, in which a chemical coloration technique having sophisticated industrial color tone is used. [Solution] The product is a chemically-colored stainless-steel product having an uneven surface formed by a grinding treatment, wherein the 60-degree specular gloss [Gs (60 degrees)] of the uneven surface is 5 to 50. The grinding treatment is performed by a single sandblasting treatment or a combination of the sandblasting treatment and an electrolytic polishing treatment. The sandblasting treatment is performed with a projection material configured from inorganic particles having a Mohs' hardness of at least six. A manufacturing method includes a sandblasting treatment step, an electrolytic polishing treatment step, a coloration treatment step for dipping stainless steel in a coloration treatment solution including a mixed solution of a chromic acid and a sulfuric acid to generate a colored film thereon, and a curing treatment step for dipping the coloration-treated stainless steel in a curing treatment solution including a mixed solution of a chromic acid and a phosphoric acid to cure the colored film.

A grain-oriented electrical steel sheet includes: a base steel sheet including, as a chemical composition, by mass %, C: 0.010% or less, Si: 2.50% to 4.00%, Mn: 0.050% to 1.000%, S+Se: 0.005% or less in total, Sol. Al: 0.005% or less, N: 0.005% or less, Bi+Te+Pb: 0% to 0.0300% in total, Sb: 0% to 0.50%, Sn: 0% to 0.50%, Cr: 0% to 0.50%, Cu: 0% to 1.0%, and a remainder of Fe and impurities; and a tension-applying insulation coating provided on a surface of the base steel sheet, in which, on the surface of the base steel sheet, an arithmetic average roughness Ra along a rolling 90 direction that is a direction perpendicular to a rolling direction is 0.60 m or less, and when a cross section of the base steel sheet is observed along the rolling 90 direction, recessed parts having a depth of 0.1 m or more and 2.0 m or less are present on the surface of the base steel sheet in 1.0/100 m or more and 6.0/100 m or less.

According to one or more embodiments described herein, a coated article may comprise: a transparent substrate having a major surface, the major surface comprising a textured or rough surface inducing light scattering; and an optical coating disposed on the major surface of the transparent substrate and forming an air-side surface, the optical coating comprising one or more layers of material, the optical coating having a physical thickness of greater than 300 nm, wherein the coated article exhibits a maximum hardness of about 10 GPa or greater as measured on the air-side surface by a Berkovich Indenter Hardness Test along an indentation depth of about 50 nm or greater.

According to one or more embodiments described herein, a coated article may comprise: a transparent substrate having a major surface, the major surface comprising a textured or rough surface inducing light scattering; and an optical coating disposed on the major surface of the transparent substrate and forming an air-side surface, the optical coating comprising one or more layers of material, the optical coating having a physical thickness of greater than 300 nm, wherein the coated article exhibits a maximum hardness of about 10 GPa or greater as measured on the air-side surface by a Berkovich Indenter Hardness Test along an indentation depth of about 50 nm or greater.

A golf club head includes a striking face, and a bottom portion secured to, and extending rearward of, the striking face. A top portion of the golf club head is secured to, and extends rearward of, the striking face. The top portion includes a substrate layer and a sealant layer disposed on the substrate layer. The sealant layer includes therein a roughened region defining visually identifiable indicia. According to another aspect, a method includes receiving a golf club head including a portion having a metal substrate layer and a sealant layer disposed thereon. A selection of a first indicia is received from among a plurality of indicia, and a masking is applied to one or more exterior surface regions of the portion based on the selection. A visual representation of the first indicia is generated on an exterior surface of the portion by media blasting the portion.

A golf club head includes a striking face, and a bottom portion secured to, and extending rearward of, the striking face. A top portion of the golf club head is secured to, and extends rearward of, the striking face. The top portion includes a substrate layer and a sealant layer disposed on the substrate layer. The sealant layer includes therein a roughened region defining visually identifiable indicia. According to another aspect, a method includes receiving a golf club head including a portion having a metal substrate layer and a sealant layer disposed thereon. A selection of a first indicia is received from among a plurality of indicia, and a masking is applied to one or more exterior surface regions of the portion based on the selection. A visual representation of the first indicia is generated on an exterior surface of the portion by media blasting the portion.

The present invention is an imprint device for imprinting a unique identification mark on a surface of an object with imprinting particles of different sizes that increase uniqueness and without the need for electric power. The imprint device includes a vertical member, a hammer member, a trigger assembly, a charging unit, a barrel and at least one pocket. In the operative configuration, a trigger of trigger assembly is activated such that hammer member impacts a cartridge filled with at least one munition of imprinting particles and releases imprinting particles. The imprinting particles travel through the barrel where acceleration is increased and impact on surface is made to form microcraters and unique identification marks. The imprinting particles can be of same size, material and shape or they can be of different sizes, material and shapes or the combination thereof for increasing uniqueness.

Textured cover assemblies for electronic devices are disclosed. The textured cover assemblies may provide a combination of optical and tactile properties to the electronic devices. In some cases, a textured cover assembly may be provided over decorative coating.

The temperature of the chamber housing a shot wheel of a shot blaster is controlled by positioning a fan exterior to the chamber that creates air flow across a mounting plate defining the chamber. The air flow created by the fan may also pass around the bearing surrounding the drive shaft that turns the shot wheel.

Control of a self-powered floor preparation machine is provided by an ergonomic controller having a guarded control stick which has various characteristics, including its pitch, roll, yaw and height, that may all be adjusted.