Manufacturing method of cross coin

Abstract

The invention discloses a manufacturing method of a cross coin. The manufacturing method comprises a 3D graph design step, a 3D modeling step, a steel die wax building step, a precision casting step,a polishing step, an oil pressure steel die transformation step and an impressing step. The manufacturing method of the cross coin can be used for processing the cross-shaped coins, namely cross-shaped commemorative coins, the manufactured cross-shaped coin products have the advantages of being high in precision, uniform in microstructure, high in density, low in precious metal raw material loss rate, low in production cost and the like, treasure and storage are facilitated, and the cross-shaped coins can be directly displayed in the placing and displaying process without props.

Description

technical field [0001] The invention relates to a manufacturing method of a cross coin. Background technique [0002] Commemorative coins are coins issued to commemorate major events, outstanding figures, historical sites, rare animals and plants, sports events, etc. in international or domestic politics, history, culture, etc., and are mainly used for collection and exhibition. Commemorative coins are generally small round, especially precious metal commemorative coins, so they have the following disadvantages: [0003] 1. It is not conducive to collection and preservation, and it is easy to lose; [0004] 2. Due to the limited size, the content of the events to be commemorated is limited and cannot be displayed abundantly; [0005] 3. The display process cannot be displayed prominently, or special display props are required. [0006] Although, there are many kinds of commemorative coins, with different shapes and patterns, and there are many fine products. However, in ...

AI Technical Summary

Problems solved by technology

[0003] 1. It is not conducive to collection and storage, and it is easy to lose;

[0004] 2. Due to the limited size, the content of the events to be commemorated is limited and cannot be displayed in a rich manner;

[0005] 3. During the display process, the display cannot be placed prominently, or special display props are required

However, so far, the basic forming process of coin making has always been limited to the basic mode of "embossed cake - embossed bas-relief pattern".

Limited by the characteristics of this process mode, the product form of commemorative coins (chapters) is relatively simple, and the patterns are mostly bas-relief patterns, so it is difficult to show greater flexibility in design.

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