Method for replicating metal relic with high fidelity

Abstract

The invention discloses a method for replicating a metal relic with high fidelity, and the method comprises the following steps: (1) an original metal relic is scanned directly by utilizing a laser scanner and a three-dimensional (3D) model of the original metal relic is acquired by reverse engineering; (2) the real process of real investment shell casting is simulated by adopting a finite element method, and the 3D model is modified according to the simulation result (such as contraction); (3) according to the modified 3D model, an accurate wax model is produced by adopting a quick prototyping method; and (4) a shell is produced by utilizing the wax model and liquid metal is poured according to the best simulation technological parameters, thus obtaining the replication with high fidelity. In the method, the accurate wax model can be produced without touching the original relic, and therefore, the relic cannot be damaged; and the method also introduces reverse engineering, quick prototyping and casting process simulation technology into the replication of the metal relic, and compared with the traditional method, the produced metal relic replication has high fidelity and can achieve the effect of representing the relic verve.

Description

technical field [0001] The invention relates to a method for reproducing cultural relics, in particular to a method for reproducing high-fidelity metal cultural relics. Background technique [0002] Among the most brilliant ancient Chinese arts, one is painted pottery, and the other is bronze ware. Painted pottery represents the imaginary and flying aspect of Chinese art, while bronze ware represents the thick, solid, solemn and orderly aspect of Chinese art. The ancient Chinese ancestors created a whole set of pottery technology in practice, which provided technical conditions for the origin and development of bronze casting technology. It can be considered that the Bronze Age in my country began in the Xia Dynasty, flourished in the Shang Dynasty, and prospered in the Zhou Dynasty. [0003] The ancient bronze wares in our country have unique artistic styles - the simplicity and beauty of the Xia Dynasty, the majesty and mystery of the Shang Dynasty, and the gorgeous and d...

AI Technical Summary

Problems solved by technology

Silicone rubber molds are easy to operate, and fine patterns can come out, but because ancient bronzes are made of clay molds, pottery molds are made from clay molds, so using silicone rubber molds will lose the texture and charm of the original

After obtaining the wax model through the above two methods, the wax model must be artificially modified.

[0010] Since the gypsum needs to be in direct contact with the original cultural relics in the process of remaking the wax model, and since the gypsum will generate a temperature of about 200°C, these chemicals may cause unexpected damage to the cultural relics. Therefore, the State Administration of Cultural Heritage has stated that It is stipulated that "for the reproduction of some precious ancient cultural relics with high value and unique artistic style, plaster cannot be directly used to turn the mold, so as not to damage the cultural relics", and the nature of the gypsum itself will cause the plaster rubbings to fail to show the details of the cultural relics; while using silicone rubber to turn the mold There is also a segmentation step, which may also cause scratch damage to the original cultural relics

At the same time, whether it is a plaster mold or a silicone rubber mold, there must be some errors in the final assembly and manual modification, which makes it difficult to guarantee the clarity of the wax mold shape and texture, and sometimes there will be seams, plus the wax mold solidifies and shrinks. , and the subsequent shrinkage of the bronze casting and solidification, therefore, there will be a large size error between the final product and the original in terms of shape and specification, which is contrary to the principle of "the replica of cultural relics is the same as the original", so it can be said that the finished product should be Called "Counterfeit" not "Replica"

[0011] To sum up, it can be found that the difficulties of the current method of preparing bronze cultural relics replicas lie in ① the difficulty of wax mold preparation;

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