A double-sided embossed precious metal foil and its forming process

Abstract

The invention discloses a forming process of a double-sided embossed precious metal foil, which comprises the following steps: rolling a precious metal blank to form a precious metal foil sheet with a predetermined thickness; forming the precious metal foil sheet into a precious metal foil with a predetermined shape and size; Annealing the precious metal foil; cleaning and drying the precious metal foil; selecting the upper mold and the lower mold according to the required relief pattern, placing the precious metal foil to be embossed between the upper mold and the lower mold, and applying pressure on the The upper surface and the lower surface of the precious metal foil form an integrated double-sided embossed precious metal foil. Compared with the prior art, the forming process provided by the invention realizes the requirement of maximum area and double-sided embossing while ensuring the minimum grammage of the foil, further simplifies the processing process, reduces processing steps, and greatly improves production efficiency. On this basis, the present invention also provides a double-sided embossed precious metal foil made based on the forming process.

Description

technical field [0001] The invention relates to a manufacturing technology of precious metal products, in particular to a double-sided embossed precious metal foil and its forming process. Background technique [0002] Precious metals have high value-preserving properties and are favored for this, such as gold products. Many gold handicrafts on the market use gold as a carrier, organically integrating precious metals and culture through creative design and modern technology. This product has distinct cultural attributes, showing high design value, craft value and commemorative value. According to the product form, its main manifestations are: coins, chapters, strips, bricks and gold foils, etc. [0003] As we all know, gold foil is a thin sheet formed by the extension of gold, and its processing and production is a special traditional craft with a history of more than two thousand years. In the existing technology, gold bars with a gold content of 99.99% are processed into...

AI Technical Summary

Problems solved by technology

[0005] With this forming process, although precious metal foils with double-sided relief can be formed, the process steps of the entire forming process are cumbersome and the processing efficiency is low.

Images