The method for treatment of parts, characterized in that it comprises the stages of applying an electrolytic chromium plating layer on a part; applying a coating over the entire outer surface of the part; selective stripping of the coating in order to leave the part with at least one coated portion and at least one uncoated portion; carrying out a selective etching on the layer in at least one part of the uncoated portion; metallization of the entire surface of the part; and removal of the coating.

The method for treatment of parts, characterized in that it comprises the stages of applying an electrolytic chromium plating layer on a part; applying a coating over the entire outer surface of the part; selective stripping of the coating in order to leave the part with at least one coated portion and at least one uncoated portion; carrying out a selective etching on the layer in at least one part of the uncoated portion; metallization of the entire surface of the part; and removal of the coating.

Disclosed is an apparatus and method for forming lubricant recesses having minute configurations by applying a photolithograph method in a curved inner surface, such as a cylinder bore surface of a cylinder block, the inside of a cylinder liner, the inside of a compressor cylinder, a big end of a connecting rod, a big end bearing, a shaft insertion hole of a rocker arm, or the like in an internal combustion engine.

Disclosed is an apparatus and method for forming lubricant recesses having minute configurations by applying a photolithograph method in a curved inner surface, such as a cylinder bore surface of a cylinder block, the inside of a cylinder liner, the inside of a compressor cylinder, a big end of a connecting rod, a big end bearing, a shaft insertion hole of a rocker arm, or the like in an internal combustion engine.

A surface that includes a three-dimensional surface, wherein a notch is present in said three-dimensional surface. The surface further includes a metal edge inserted into the notch and attached to the three-dimensional surface.

A surface that includes a three-dimensional surface, wherein a notch is present in said three-dimensional surface. The surface further includes a metal edge inserted into the notch and attached to the three-dimensional surface.

This manufacturing method of a metal component enables precision processing of a corner portion, and the radius of curvature of a cog tip of a gear and the like can be made smaller than before. The manufacturing method of a metal component includes: (a) forming a mask film having, in plan view, a first side, a second side, and an extension portion that extends from a region between the first side and the second side on a metal film; and (b) forming a corner portion having, in plan view, a third side and a fourth side by etching the metal film.

This manufacturing method of a metal component enables precision processing of a corner portion, and the radius of curvature of a cog tip of a gear and the like can be made smaller than before. The manufacturing method of a metal component includes: (a) forming a mask film having, in plan view, a first side, a second side, and an extension portion that extends from a region between the first side and the second side on a metal film; and (b) forming a corner portion having, in plan view, a third side and a fourth side by etching the metal film.

In some embodiments, a method may include selectively applying a mask to a first surface of a substrate. The mask may include one or more components defining a selected pattern and having a non-uniform density. The method may further include etching the first surface of the substrate based on the mask and selectively processing the first surface of the substrate to produce a multi-dimensional artwork.

A method for making a conductive film includes the steps of: depositing a conductive metal film on a substrate to form a metal-coated substrate; depositing a fiber pattern on the conductive metal film of the metal-coated substrate to form a masked substrate, the fiber pattern defining protected metal and exposed metal of the conductive metal film; removing the exposed metal from the conductive metal film of the masked substrate to form a protected conductive film; and removing the fiber pattern from the protected conductive film to expose the protected metal and provide a metal pattern on the substrate. An annealing step con be employed after depositing the fiber pattern to increase the surface area of contact between the fiber pattern and the conductive metal film.