Ceramic wristwatch dial and manufacturing method thereof

Abstract

The invention discloses a manufacturing method of a ceramic wristwatch dial. The method comprises the following steps of: firstly, manufacturing an injection molding mould; then carrying out mixing and granulation on ceramic powder and a binding agent, and then carrying out injection molding to obtain a dial blank; and finally, carrying out de-greasing, sintering, machining and polishing on the dial blank to obtain the ceramic wristwatch dial. The manufacturing method disclosed by the invention is simple in process and the dial does not need to be painted or plated to change the color and the texture so as to prevent a paint layer or a plated layer from being aged to change color and being stripped under the sunlight illumination for long time; and therefore, the service life and the reliable performance of the dial are greatly improved. Meanwhile, the invention further discloses the ceramic wristwatch dial manufactured by using the method disclosed by the invention; and the dial has the advantages of wear resistance, corrosion resistance, no paint removing, no rust, fastness and the like, and has relatively high reliability and relatively long service life.

Description

technical field [0001] The present invention relates to a method for making ceramic watch dials by using ceramic materials and the ceramic watch dials produced by the method, in particular to a method for making ceramic watch dials that do not need to change the color and texture of the dials by painting or plating and using the method The method makes the resulting watch face. Background technique [0002] As a watch dial, it is required to have excellent visibility as a practical product, and it is also required to have a beautiful appearance and appearance texture as an ornament. In order to achieve the uniqueness and high-quality appearance of the dial appearance, Au, Ag, etc. are generally used Precious metal materials are used as substrates. However, in order to reduce production costs, ordinary plastics or engineering plastics are also used as dial substrates, and then a metal film is covered on the plastic surface. However, due to the poor nodularity between the me...

AI Technical Summary

Problems solved by technology

However, due to the poor concretion between the metal film and the base material, the difference in thermal expansion coefficient is large, so the metal film is easy to peel off during use, affecting the service life of the dial, and the durability is poor

[0003] Regardless of whether plastic or metal is used as the base material of the dial, the surface must be painted or plated to achieve the purpose of beautifying the surface color. After the dial is painted, due to long-term exposure to sunlight, it is easy to cause aging and discoloration of the paint layer. In severe cases It will cause the peeling of the paint layer and affect the service life of the watch. The main reason for the poor reliability of the paint and coating is that it is made of different materials, the bonding performance between the materials is poor, and there is a difference in thermal expansion coefficient. Thermal expansion and contraction are easy to affect peeling. The time scale on the surface of the dial needs to be inlaid, which may easily cause the time scale to fall and affect the reliability of the dial; in addition, it is made of a variety of materials, which also has this problem, and because the thickness of different layers is thin, it is easy to cause deformation

[0004] At present, the dial materials of watches generally include plastic, brass, shells and other materials. There are few types, and the hardness is poor, and they are not wear-resistant. The process is not only complicated, but also the surface of the dial has the disadvantages of easy discoloration, rust and peeling off