Hammer first, then file, so that gold ornaments are more delicate and smooth. Then check the interior of the jewelry, sand paper to polish all dead corners, and finely polish with tools such as grinding needle, grinding wheel and disc grinding wheel to further shape. In the process of forging and polishing, a large amount of gold cannot be recovered, which also increases the cost.
2, gold polishing method:
Polishing is soaked in dilute hydrochloric acid. After immersion in hydrochloric acid, rough polishing is performed by immersion in water. After being taken out, it is finely polished by hand. Paint the car after repeated polishing, and fry the car before painting. After the car flower is finished, it is polished by hand, and then reshaped, which makes the wearer feel more comfortable. This sand blasting process is also unique in China.
Extended data:
Maintenance of gold ornaments in autumn and winter;
1, the air is relatively dry in autumn and winter, and there will be more originally tiny dust, which will form a kind of "human sandpaper" after being contaminated by human body, which can grind gold jewelry into extremely fine debris and appear local black stains. You can scrub, rinse and dry with soapy water mixed with a little alcohol.
2. The more clothes people wear in autumn and winter, some jewelry that needs to be displayed outside is out of place. Many people will choose to put away their jewelry, wrap it in flannel when they don't wear it for a long time, and then put it in a jewelry box alone. Gold is soft and avoids rubbing with other jewelry.
3. Chemicals such as detergents and disinfectants will change the color of gold, so gold ornaments should be removed before cleaning or housework to avoid chemical changes on the surface.
4. After wearing, gold ornaments often lose their luster due to stains and dust. At this time, just put the gold ornaments in neutral detergent, soak them in warm water, and then take them out to dry. Salt and vinegar are mixed into a cleaning agent, which can be used to wipe pure gold jewelry and make it last forever. Toothpaste wiping or scrubbing with hot rice soup can also restore luster.