Etching method and etching polishing liquid

Abstract

The invention discloses a method for etching a flat surface of a metal product and a curved surface connected with the flat surface. According to the method, a concavo-convex continuous microstructure is formed in the surface of the metal product by controlling the size of mask blocks and mask gap on the flat surface and the curved surface of the metal product and controlling related process parameters such as etching time, etching pressure and the like in an etching process; the depth of each pit is gradually reduced from the center of the flat surface to the edge of the curved surface; the section of the pit is shaped like a trough arc of sine wave; each projection does not have an obvious edge; the adaption part of the projection is in smooth transition; the section of the projection is similar to a quadrangular shape; the whole structure is in gentle transition; the microstructure takes on gradual transition connection of from existence to null and has good visual and tactile effects; and the requirements on higher anti-skid performance and attractive appearance can be met.

Description

technical field [0001] The present invention relates to a method for etching a metal product and an etching polishing solution used in the method, especially a method for etching a metal product having a plane and an arc-shaped curved surface connected to the plane, and The etching polishing liquid used in the method. Background technique [0002] The processing method of microchemical etching is used in the manufacturing process of metal surface patterns, pattern processing, PCB development boards, micro-electronic mechanical systems, etc. Usually, the corresponding pattern is first masked on the surface of the workpiece, and then the surface microstructure and complex microstructure are processed by etching. Etching processing has the advantages of simple process flow, high processing efficiency, and low cost, and is widely used in production. Due to the good hardness and polishability of die steel, the pattern texture after micro-etching processing is fine and beautiful,...

AI Technical Summary

Problems solved by technology

The traditional etching process can better ensure the uniformity of the entrance size and etching depth of the pit formed by etching, and achieve better dimensional accuracy and structural features. Products, on the transition surface of the arc edge, there will be a sudden change in the microstructure from presence to absence, the microstructure formed between the plane and the curved surface lacks good transition, the connection effect is poor, and the visual and tactile effects of the microstructure formed poor

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