Question 2: How to clean the gold necklace when it turns black? You can decompose it with copper sulfate.
Question 3: How to clean the silver jewelry when it turns black? There are two cleaning methods for blackening silver rings: physical cleaning and chemical cleaning.
Physical method:
1, brush with toothpaste and toothbrush.
2. Apply lipstick on the cloth, then wipe the silver ornaments, and finally rinse them with water.
3. Apply the correction fluid to the silver jewelry, and wipe the silver jewelry with a cloth before the correction fluid dries.
Chemical methods:
1. Soak in Coca-Cola containing carbonic acid 12 hours.
2. Wash and cook with vinegar, which contains acetic acid.
3. Soak overnight tea, which contains oxalic acid.
4. Wipe with a silver cloth, which has chemical components to remove silver oxide.
Question 4: How to clean the silver jewelry when it turns black? Many friends like sterling silver ornaments, but they don't know how to maintain them. In fact, we only need to spend some time in our daily life to make silver ornaments last as long as new.
1, the best way to maintain silver jewelry is to wear it every day, because human oil can produce a natural and moist luster.
2. Don't wear other precious metal jewelry when wearing silver jewelry to avoid collision, deformation or wear.
Keep the silver ornaments dry, don't wear them to swim, and don't go near hot springs and seawater. When not in use, you can gently wipe the surface with cotton cloth or paper towel to remove moisture and dirt, and put it in a sealed bag or box to avoid contact with air.
If the silver ornaments show signs of yellowing, the easiest way is to gently wash the surface with toothpaste and some water. Or use a small jewelry brush to clean up the fine seams of the silver ornaments, and then gently wipe the surface with a silver cloth, and the original aesthetic feeling of the ornaments can be restored immediately. (If the silver cloth can restore about 80% to 90% of silver, don't use silver lotion and silver washing water, because they are corrosive to some extent, and silver ornaments are more likely to turn yellow after using these products. In addition, silver cloth contains silver maintenance ingredients and cannot be washed with water)
5. The silverware is seriously yellowed, so it should not be soaked in silver washing water for too long, usually in a few seconds. Rinse with clear water immediately after taking it out, and then dry it with a paper towel.
Common surface treatment methods of silver jewelry _0506 18
The easy oxidation of silver is its weakness, and it is also a headache for consumers and producers. At present, the common silver surface treatment methods in the domestic market are further oxidation, electroplating and untreated.
Whether it is further oxidized or untreated, the characteristics of silver oxidation blackening are fully utilized. Using oxidants to deepen the oxidation of the silver surface, or using the natural oxidation of the silver surface to produce richer colors and mechanism effects in silver jewelry, so that the defects are not concealed, is a method of exerting strength.
The real way to prevent the surface oxidation of silver jewelry is electroplating. At present, the commonly used methods are silver plating, rhodium plating, palladium plating and so on.
The silver jewelry produced by European goldsmiths mainly adopts deep oxidation treatment and sandblasting electroplating treatment.
Many people like silver ornaments, but they don't know how to maintain them. They even think that silver ornaments are difficult to maintain, which is not the case. The chemical properties of silver are not as stable as platinum and gold, and it is often oxidized to black or yellow by water or other chemicals in the air, losing its luster. After understanding this feature, we only need to spend a little thought in our daily life to make the silver ornaments we wear last as long as new.
When wearing silver jewelry, don't wear other precious metal jewelry at the same time to avoid collision, deformation or wear. Keep the silver ornaments dry, don't swim in them, and don't go near hot springs and seawater.
After each wear, you can gently wipe the surface with cotton cloth or paper towel to remove moisture and dirt, and then put it in a sealed bag to avoid contact with air.
The best way to maintain silver jewelry is to wear it every day, because human oil can produce a natural and moist luster.
Contains exquisite three-dimensional silver ornaments made into sculptures to avoid deliberate polishing.
If you find that the silver ornaments are yellow, you should first clean up the thin seams of the silver ornaments with a small jewelry brush, and then gently wipe the surface with a silver cloth to restore the original silvery white and brightness.
I suggest that if the silver cloth can recover about 80% silver, there is no need to use silver lotion and silver washing water, because these products are corrosive to some extent, and silver ornaments are more likely to turn yellow after using these products. Silver wipes contain silver maintenance ingredients and cannot be washed.
If you don't handle and collect the silver jewelry after wearing it, it is very likely that the silver jewelry will turn black. At this time, you should use a small jewelry brush to clean the fine seams of jewelry, then drop a drop of silver emulsion on the paper towel to wipe off the black oxide on the surface of jewelry, and then use a silver cloth to restore the original brightness of jewelry. After that, you should remember to do the daily general maintenance to prevent the silver ornaments from turning black again. It is difficult to rub the silver ornaments white after many times of blackening.
These are some basic considerations. Here is a detailed introduction to the maintenance methods of electroplated and unplated silver ornaments:
First of all, it is necessary to distinguish whether there is electroplating (silver ornaments are generally divided into electroplating and non-electroplating):
There are electroplated silver ornaments, that is, the inner layer is pure silver, and the surface is being treated with current; Electroplating is generally divided into electrogold and platinum; The way to identify electroplating is that its surface is brighter than pure silver, just like a mirror, which has good reflective effect and is not easy to oxidize (the oxidation time depends on the thickness of electroplating). Electroless silver jewelry is easy to lose its luster due to vulcanization. Sulfur dioxide in the air reacts with silver, forming a layer of silver sulfide on the silver jewelry, which will change slowly with the cut apple ... >>
Question 5: How to clean the silver ornaments when they are oxidized and blackened? How to clean sterling silver jewelry
The sterling silver ring turned black after a long time. I found a special way to restore it to its original appearance without going to the jewelry store to clean it.
The following are ways to clean and contribute to sterling silver jewelry:
1, with 50C warm water 1000 ml, 200 ml phosphoric acid and 30 g concentrated washing powder, pour the liquid into the ultrasonic cleaning tank for cleaning 100 seconds, and then rinse it with clear water. Household cleaning: pour the cleaning liquid into the container, soak the silver jewelry for 10 minute, then rinse with toothbrush, and then rinse with clean water for 10 minute.
2, and learn to make the oxidation discoloration of silver products back to light. Primary colors, polished surfaces, the simplest. Just wipe it with a silver cloth. If there are cracks in the unpolished surface, it can be cleaned with silver water.
Maintenance of silver jewelry:
1. When wearing 925 sterling silver jewelry, don't wear other precious metal jewelry at the same time to avoid collision, deformation or wear. Even if different fashions are used for a long time, silver ornaments will oxidize and change color whether they are electroplated or not! Therefore, friends who love silver ornaments must learn how to maintain pure silver and extend the bright time.
2. Avoid contact of 925 sterling silver jewelry with water vapor and chemicals, and avoid wearing it when swimming, especially when going to sea.
3. After wearing 925 sterling silver jewelry every day, wipe it clean with cotton cloth and put it in a jewelry box or bag for sealed preservation.
4.925 sterling silver jewelry has been oxidized and blackened, so you can use a soft brush dipped in toothpaste; You can also wash it with soap or detergent by hand; If it is not clean, it can only be washed with silver; 925 sterling silver jewelry should be dried with cotton cloth after washing.
5. Avoid contact with chemicals such as acid and alkali.
6. Please wear jewelry after spraying perfume and hairdressing products.
7. When taking a bath, take off the ornaments and avoid contact with shower gel, soap and other supplies.
8. Please take off your jewelry when you sleep, and avoid wearing it overnight, and your hair will be entangled in the jewelry.
9. Sweat of human body will corrode silver jewelry, so it is best to wash it with clear water after wearing it in summer and keep it dry.
10, pure silver is soft, so be careful on weekdays to avoid rubbing against hard ornaments.
1 1. Please wipe the ornaments with a soft cloth after each wear.
12, stored in a jewelry box in a dark place.
Question 6: The silver bracelet turns black. How to clean it? When the silver bracelet turns black, most people will use professional silver cloth, silver washing water and toothpaste to clean it.
Use the silver washing water immersion method (except for the old process) or wiping method (except for the platinum plating process and inlay process), put the silver ornaments in the silver washing water for about three minutes (if the oxidation is particularly serious, it can be left for a long time), take them out and rub them repeatedly, rinse them with plenty of water, put them into alkaline sleep (such as washing powder water), and finally rinse them with clear water.
Using toothpaste is to directly put toothpaste on the silver jewelry, and then add a little water to beat out the foam. If there is a seam, brush it with a toothbrush to prevent foam from entering the seam.
In addition to the above methods, you can also use lemon and bath. The sour taste of lemon is the nature of plants. The damage to silver ornaments is minimal. Buy a lemon, cut it, and bury the silver ornaments in the lemon. Take it out quickly, and it will light up after scrubbing. There is also the use of bath liquid. Although bath cleaning does not last long, it is very simple and has no damage to the silver jewelry itself.
Question 7: How to clean gold when it turns black? Hello, please go to the professional after-sales service department for cleaning and maintenance.
Question 8: What is the reason why silver ornaments turn black? How to clean silver ornaments;
1 natural oxidation, not often worn, no matter after taking it off. If left unchecked, silver will combine with sulfur dioxide in the air to produce a natural oxidation reaction. Solution: Wipe with a silver cloth, or wipe with lipstick on a clean cotton cloth. This is for flat jewelry, but if it is a filament, use alum and water1; 10 ratio of boiling or toothpaste brush (but the gloss of toothpaste brush is not silver brightness)
You have too much acid in your body, or you are sick. Cosmetics, perfume or sweat will soon corrode the surface of silver ornaments (within two days), and the color is very black. It is useless for you to use any of the above methods. Be sure to go to a professional jewelry store and finally have your own factory. Polishing with a high degree of machine, throwing away the corroded layer on the surface, it will be as bright as new. Remember, if a store charges you for cleaning silver oxide jewelry with ultrasound, don't be cheated. Ultrasonic can only wash dirty cracks, but not oxidized cracks. Don't wash water with silver often. It is also corrosive. . . It is best to wear it every day, wipe it clean with a silver cloth and put it in a plastic bag to isolate the air. You don't need to wear it. I'm sure it's no problem
Question 9: How to clean black and silver jewelry? 1. Soak in Coca-Cola 12 hours.
2. Apply lipstick on the cloth, then wipe the silver ornaments, and finally rinse them with water.
3. Scrub with acetic acid.
4. make tea for one night.
5. Wipe with a silver cloth.
6. Soak in silver washing water for one to two minutes.
7. Apply the correction fluid to the silver jewelry, and wipe the silver jewelry with a cloth before the correction fluid dries.
8. Brush with toothpaste and toothbrush.
9. Burn black silver ornaments with lighter (Note: This method is limited to pure silver (gold-plated and inlaid silver ornaments cannot be used. The temperature should not be too high, so it is forbidden to use matches, because matches contain sulfur, which will turn silver ornaments into silver sulfide, and then polish them with a silver rubbing cloth. This method makes plain silver ornaments particularly bright.
10, Yin Su's silver jewelry is often blackened, although it can be cleaned frequently, but it is also very troublesome. I teach you to prepare a bottle of transparent nail polish before cleaning the silver ornaments, blow dry the silver ornaments with a fan after cleaning, and then coat the cleaned silver ornaments with a layer of nail polish. My client tried this method to keep the silver ornaments from blackening for up to one year.
Maintenance method of silver jewelry
A, when not in use, it should be sealed and stored, and it can be packed in a small plastic bag to isolate the air to reduce the contact of the oxidation machine and keep the jewelry fresh;
B, silver jewelry and other alloy jewelry, try not to contact water and * * * liquid. Silver jewelry needs to be picked when washing hot springs, and can be worn when bathing or swimming at ordinary times, but it is necessary to avoid contact with sulfur soap, hair dye, perm agent and other items that are easy to damage the surface luster of silver jewelry;
C, pay special attention to silver ornaments inlaid with stones, and try not to get wet, because there will be gaps in the mosaic joint, and stones will easily fall off when they meet water.
D. For smooth ornaments, you can generally wipe them with delicate paper towels or soft cloth, and gently wipe them back and forth in the same direction to avoid too many scratches. The best effect is to use a professional silver wiping cloth.
E, bright silver jewelry can be washed with silver washing water. After cleaning, please rinse with plenty of water, and finally rub with a little alkaline water (such as soapy water or washing powder water) for a while, then rinse with water and dry with a soft cloth. Finally, the reason why washing powder is used again is to neutralize the weak acidity of silver washing water, so as to really play the role of silver washing water.
G, to clean jewelry correctly, wear it in the right way; When wearing a bracelet, you should wear it from the narrow side of your wrist and then rotate it around your wrist to the normal position. Don't break it hard, or the stones on the surface of the bracelet may fall or the bracelet itself will be deformed.
Cleaning method of silver ornaments:
There are three ways to clean silverware correctly:
Wipe the surface of silver ornaments with professional silver wiping cloth first (except platinum plating process).
Second, with professional silver washing water, you can use soaking method (except the old process) or wiping method (except the platinum plating process and inlay process), put the silver ornaments in the silver washing water for about three seconds (if the oxidation is particularly serious, it can be put for a longer time), take them out and rub them repeatedly, rinse them with plenty of water, and rub them in alkaline water (such as soapy water); Finally, rinse with clean water.
Third, use toothpaste (try to choose the shape of green and transparent rice grains with fine particles to avoid scratching the surface of silver jewelry), put toothpaste directly on the silver jewelry, and add a little water to rub out the foam. If there is a seam, brush it with a toothbrush to prevent foam from entering the seam;
Special note: If it is a stone inlay process, avoid washing with water to prevent the stone from falling off. It is recommended to clean with silver cloth.
Question 10: What is the reason why silver ornaments turn black? How to clean it? First of all, we need to know why silver ornaments turn black. Silver jewelry turns black for the following reasons:
First, the silver jewelry you are wearing is not real silver, but may be silver-plated products. After wearing for a long time, the silver water on the surface of jewelry will expose the metal inside and turn black.
Second, the silver jewelry worn is real silver, and blackening is normal oxidation. Because silver reacts with sulfur in the air for a long time to produce black silver sulfide, silver ornaments will gradually turn black.
The third is related to people's physique. Some people have too many acidic substances or are sick. Some cosmetics, perfumes, sweat, etc. they usually wear will corrode the surface of silver ornaments, form what people usually call silver scales or silver molds, and turn black, which seriously affects the surface color of silver ornaments.
You can clean the silver jewelry with toothpaste (try to choose green and transparent Mi Le toothpaste, which has fine particles and can avoid scratching the surface of the silver jewelry. ), put the toothpaste directly on the silver jewelry, and then add a little water to rub out the foam. If there is a seam, brush it with a toothbrush to prevent foam from entering the seam; If it is a stone embedding process, avoid the toothpaste from contacting the stone, and finally rinse it off, especially where there are cracks in the hollow.