Metal trophies are generally made of copper, zinc-aluminum alloy, open-die casting or forging, and the surface is electroplated and polished, which is stable and generous. Copper is resistant to oxidation and corrosion in metal ranks, and more importantly, it is beautiful in color and vision; Similarly, zinc-aluminum alloy is also an oxidation-resistant and corrosion-resistant metal, but zinc-aluminum alloy can be divided into two colors, one is gold and the other is silver.
Moulds are classified according to the processing technology of metal processing, and commonly used are: stamping dies, including blanking dies, bending dies, drawing dies, hole-turning dies, hole-shrinking dies, wave-shaped dies, bulging dies, shaping dies, etc. Forging dies, including forging dies for die forging and upsetting dies; As well as extrusion dies and die-casting dies.
In the process of making metal trophies, photographic etching technology. A layered photosensitive drug-resistant coating is formed on the surface of the metal trophy, the original film is exposed by ultraviolet rays, then developed to form a drug-resistant coating with a required shape, and then the exposed part is chemically or electrochemically corroded by acid or alkali solution of an etching bath to dissolve the metal trophy. Metal trophy making is also a common process for making alloy trophies, and its principle is etching process. The so-called etching technology is a treatment technology to remove the metal from the metal surface by using the erosion effect on the metal surface. Generally speaking, there are electrolytic etching and chemical etching. Electrolytic etching. Using the master mold as the conductive cathode and electrolyte as the medium, the erosion removal method of etching focuses on the processing part. Chemical etching. A method of removing etching corrosion by using a drug-resistant coating and concentrating it on the required part.