In the production process of the large copper seal, the following aspects need to be noted:

1、 Design phase

Clear theme: Ensure that the theme is clear, prominent, and able to accurately convey the meaning and emotions to be expressed. Avoid vague or overly complex themes to avoid affecting viewers‘ understanding.

Creative uniqueness: Strive to design with innovation and uniqueness, avoiding similarity with existing works. The unique design can increase the artistic and collectible value of the large bronze medal.

Reasonable pattern layout: Consider factors such as proportion, symmetry, and layering of the pattern to make the overall layout of the chapter coordinated and beautiful. Avoid crowded or loose patterns.

Harmonious color matching: Choose the appropriate color matching that not only matches the atmosphere of the theme, but also has visual impact. Pay attention to the contrast and coordination of colors, avoiding excessive glare or monotony.

2、 Carving mold stage

Original mold accuracy: The carving accuracy of the original mold directly determines the quality of the large copper seal. Engravers need to possess superb skills and rich experience to ensure that the details of the original mold are clear and have a strong sense of three dimensionality.

Mold material: Choose high-quality mold materials to ensure the hardness and wear resistance of the mold. The quality of the mold will affect the production efficiency and finished product quality of the large copper seal.

Flipping process: When flipping the working mold, it is necessary to strictly control the process parameters to ensure the accuracy and consistency of the working mold. Avoid deformation, defects, and other issues.

3、 Casting stage

Copper material quality: Select high-quality copper materials to ensure the purity and fluidity of the copper liquid. Excessive impurities in copper material can affect the quality and appearance of large copper seals.

Casting temperature and time: Control the casting temperature and time well to ensure that the copper liquid fully fills the mold and avoid defects such as porosity and shrinkage.

Demoulding treatment: Be careful during demoulding to avoid damaging the large copper seal or mold. Ensure the integrity and surface quality of the large copper seal.

4、 Processing stage

Polishing and Grinding: During the polishing and grinding process, attention should be paid to the strength and method to avoid excessive polishing that may cause blurry patterns or dimensional changes. At the same time, it is necessary to ensure that the seal surface is smooth and flat, without scratches or defects.

Coloring treatment: If coloring treatment is carried out, appropriate coloring methods and pigments should be selected to ensure that the color is firm and uniform. Avoid color fading, color difference and other issues.

Quality inspection: Conduct strict quality inspections on each large copper seal, including dimensions, patterns, surface quality, and other aspects. Unqualified products should be promptly reworked or eliminated to ensure the quality of the large copper seals leaving the factory is excellent.

In short, the production process of large copper seals requires fine craftsmanship and strict quality control. Only by paying attention to details in every link can high-quality and artistically valuable large copper seals be produced.