turquoise jewelry wholesale china 1. The production of the coin is not sprayed on the products, but sprayed on the mold. 2. The production of the mirror surface of the coin is not grinding on the currency, but after grinding on the mold, the mirror part of the mold is chrome or titanium. The mirror of some early currency chapters is hand -made, without plating. The blank cakes and molds of refined coins are higher than that of Pu coins, but it does not mean that all refined coins are more beautiful than Pumang. In addition, the preliminary processing of polishing grinding and cleaning of the gold and silver belt of the coin raw materials and the gold and silver cake can also affect the exquisiteness of the coin. 3. After a certain amount of mold die casting, the mold needs to be used for dust removal, polishing, and sandblating, and then continued to use. The same. 4. The heavy sand spraying of gold and silver coins is not necessarily the earlier die -casting. To be precise, it should be called "staged higher". Meeting, the die -casting pattern is sharp and clear, not necessarily the first. Large goggles use multiple pressure printing. Not all the number of coins are exactly the same. Sometimes the effect is achieved. Some, some pressed four times to achieve the effect. 5. The texture of the coin surface sand also depends on the specifications of the spray and sand grains used in the mint; the time of the spray time of the unit area and other factors. Excessive sandblasting will affect the details of the currency face pattern. 6. "Those who have mirror sand spraying are refined coins." This view is not completely correct. After reading the above content, you understand. 7. Manual operation of the spray spray process, the slight difference between the blocking coverage of the mold mirror part, etc., will cause different patterns, mainly different from the sandblast site. "different representatives of mold plating are refined and universal systems", "whether the mold increases the plating layer to distinguish refining and general system" -Things is not completely in line with reality. The correct thing is: 1. The molds of general coins are also chrome plating, and the general coin molds also have nitride -plated titanium -plated titanium (mostly chrome plating, slightly less titanium plating); 2. ; 3. The refined and general billet substrates are the same, all of which are pure silver, or alloy (some substrates also have different quality differences due to different manufacturers). The difference is that the blank cake of refined coins is more stricter, especially the surface quality. The most important thing is to increase the cleaning and polishing of raw materials or blank cakes used in dieting coins. Still: the production requirements of refined coins are higher than that of general coins. "The more dedicated the workers, the higher the quality of the currency." This is the key.
chic wholesale jewelry First, the selection of materials This silver coins generally use the pure silver with a purity 999, and the most internationally adopted 925 and 900 color. Gold coins are generally cast by 9999, 999, 22K and other gold, silver or gold and copper alloys. Both gold or silver are purified and prepared by the mint electrolytic refining, and the analysis of modern instruments. The results of the analysis represent the authority and advancement of a country. . The melting bar version The melted metal from the electric furnace was cast into various specifications into various specifications, and then used mechanical milling to remove impurities. Then Cold rolling under conditions. The mirror with a very small mirror on the dedicated rolling machine is not more than 0.005 mm. three, rinse cakes, cleaning The billet cakes that are pushed out of the punch must be ensured to obtain the smallest burrs and the best edge. The surface of the blank cake is dry with a special cleaner, and each cake must be weighed. The accuracy of the electronic scale is 0.0001 grams. All the cakes that do not meet the tolerance are scrapped. Put the perfect blank cake that meets the requirements in accordance with the specified quantity in a clean belt cover. . The mold The mold design is an important link in the coin process. After rigorously reviewed themes and patterns, through the complex and superb carvings of the mint, combined with modern precision equipment, the design intent will be on the design of the designs. . Pressing is performed in the purification room with air filtration. Any tiny dust is the root cause of coin scrap. The internationally printed scrap rate is 10% The scrap rate with large diameter and large diameter and large -mirror area is as high as 50%. 6. Protection and packaging is to maintain the original color of the gold and silver commemorative coins within a certain period of time. Then seal with plastic membranes, and then put it in a packaging box designed for it, and all finished products will eventually undergo strict inspection.
turquoise jewelry wholesale china 1. The production of the coin is not sprayed on the products, but sprayed on the mold.
2. The production of the mirror surface of the coin is not grinding on the currency, but after grinding on the mold, the mirror part of the mold is chrome or titanium. The mirror of some early currency chapters is hand -made, without plating. The blank cakes and molds of refined coins are higher than that of Pu coins, but it does not mean that all refined coins are more beautiful than Pumang. In addition, the preliminary processing of polishing grinding and cleaning of the gold and silver belt of the coin raw materials and the gold and silver cake can also affect the exquisiteness of the coin.
3. After a certain amount of mold die casting, the mold needs to be used for dust removal, polishing, and sandblating, and then continued to use. The same.
4. The heavy sand spraying of gold and silver coins is not necessarily the earlier die -casting. To be precise, it should be called "staged higher". Meeting, the die -casting pattern is sharp and clear, not necessarily the first. Large goggles use multiple pressure printing. Not all the number of coins are exactly the same. Sometimes the effect is achieved. Some, some pressed four times to achieve the effect.
5. The texture of the coin surface sand also depends on the specifications of the spray and sand grains used in the mint; the time of the spray time of the unit area and other factors. Excessive sandblasting will affect the details of the currency face pattern.
6. "Those who have mirror sand spraying are refined coins." This view is not completely correct. After reading the above content, you understand.
7. Manual operation of the spray spray process, the slight difference between the blocking coverage of the mold mirror part, etc., will cause different patterns, mainly different from the sandblast site.
"different representatives of mold plating are refined and universal systems", "whether the mold increases the plating layer to distinguish refining and general system" -Things is not completely in line with reality. The correct thing is:
1. The molds of general coins are also chrome plating, and the general coin molds also have nitride -plated titanium -plated titanium (mostly chrome plating, slightly less titanium plating);
2. ;
3. The refined and general billet substrates are the same, all of which are pure silver, or alloy (some substrates also have different quality differences due to different manufacturers). The difference is that the blank cake of refined coins is more stricter, especially the surface quality. The most important thing is to increase the cleaning and polishing of raw materials or blank cakes used in dieting coins. Still: the production requirements of refined coins are higher than that of general coins. "The more dedicated the workers, the higher the quality of the currency." This is the key.
chic wholesale jewelry First, the selection of materials
This silver coins generally use the pure silver with a purity 999, and the most internationally adopted 925 and 900 color. Gold coins are generally cast by 9999, 999, 22K and other gold, silver or gold and copper alloys. Both gold or silver are purified and prepared by the mint electrolytic refining, and the analysis of modern instruments. The results of the analysis represent the authority and advancement of a country.
. The melting bar version
The melted metal from the electric furnace was cast into various specifications into various specifications, and then used mechanical milling to remove impurities. Then Cold rolling under conditions. The mirror with a very small mirror on the dedicated rolling machine is not more than 0.005 mm.
three, rinse cakes, cleaning
The billet cakes that are pushed out of the punch must be ensured to obtain the smallest burrs and the best edge. The surface of the blank cake is dry with a special cleaner, and each cake must be weighed. The accuracy of the electronic scale is 0.0001 grams. All the cakes that do not meet the tolerance are scrapped. Put the perfect blank cake that meets the requirements in accordance with the specified quantity in a clean belt cover.
. The mold
The mold design is an important link in the coin process. After rigorously reviewed themes and patterns, through the complex and superb carvings of the mint, combined with modern precision equipment, the design intent will be on the design of the designs.
. Pressing
is performed in the purification room with air filtration. Any tiny dust is the root cause of coin scrap. The internationally printed scrap rate is 10% The scrap rate with large diameter and large diameter and large -mirror area is as high as 50%.
6. Protection and packaging
is to maintain the original color of the gold and silver commemorative coins within a certain period of time. Then seal with plastic membranes, and then put it in a packaging box designed for it, and all finished products will eventually undergo strict inspection.