You will need
- - capacity for bluing
- - protective equipment
- - metal for bluing
- - abrasive material
- liquid for degreasing
- - copper sulphate
- - sulphuric and hydrochloric acid
- - Chernovetskiy soda
- - potash alum
- - water
Prepare the tank for bluing. It is desirable that it was made of galvanized steel. If you have not, you can use a wooden product. Attach to the container walls are small metal hooks. You will be able to hang the steel parts. Try to find this size of hooks, the steel does not touch the wall during the bluing.
Before subjecting the steel to the bluing, it should be treated. Under treatment refers to the process of Stripping away the oxide film and rust. This is a very important and time-consuming process. It depends on the quality of the subsequent metal coating. Start to remove end coating you can use sandpaper with a fairly large grain. Then gradually extend to processing nulevkoy. If you are trying to do the blueing in the home, for polishing you can try to use a drill with a metal brush. But this should be done very carefully, keep the pressure. If you overdo it, you will have to spend twice as much time to fix scratched the surface. Finish grinding is possible with fine emery dust.
Quality polished detail should be subjected to degreasing. The fact that the oxide film can only appear on a perfectly clean surface. Therefore, to neglect this procedure in any case impossible. Degreased the metal in different ways. The simplest option is to wipe the steel with acetone, gasoline or white spirit. But it is better to use the following method. Wash the item in soapy hot water. Then immerse in a weak solution of caustic soda. It should be noted that the increase in solution temperature has a positive effect on the quality of cleaning metal. Optimal temperature - 100 degrees Celsius. Immerse parts in a solution suitable for 30 minutes. This time is sufficient. To complete the process of degreasing rinse the steel with water or pour over boiling water.
Now you can Voronet steel. Prepare copper sulphate. It needs to be dissolved in water. Then you need to add a little sulfuric acid. About 20 drops per liter. Can now be immersed in the solution details and wait until they are painted in red color. After removing from the solution and was washed in water, need to shift steel in the following solution. It is made from chernovetskogo sodium hydroxide and hydrochloric acid. Soda need to take 800 grams per liter. And acid – slightly less than one-eighth of a Cup per liter. The solution should be warmed to boiling water. Immerse the metal for 30 seconds. To touch the parts with your hands impossible. After that, rinse in cold water steel elements, they are immersed in a final solution of potash alum and water. In the ratio of one liter of water one-third Cup of alum powder. Leave items in this solution it is necessary not less than ten hours, and can be even longer. Complete the procedure by rinsing and drying of the product. In the end, the item acquires a black color with a noble blue tint.
Please note that the blueing is conducted in a dedicated room.
Don't forget about using protective equipment when working with chemicals.
Advice 2 : How to blacken silver
Jewelry alloys of silver have faded color. The product of such a metal and ugly quickly darken, so they made the first artificially blacking and then polishing. Blacking masks the natural process of darkening of the metal and gives the decoration a charm. For the blackening of silver jewelers use special chemicals you can buy that is difficult. But you can use all the available tools: egg, iodine or pharmacy sulphur ointment.
You will need
- Darkening with eggs:
- - the egg;
- - plastic container with lid (the type of container to freeze);
- thin fishing line (string or rope).
- Blackening iodine:
- - iodine;
- - toothpaste;
- woolen cloth.
- Blackening sulfuric ointment:
- - 30-33% of pharmacy sulfur ointment;
- - hair dryer;
- grinding emery cloth for silver.
Blackening silver with eggs. Good clean silver ware. Then remove any contamination. Hard boil the egg, cool and cut in half (not necessary to brush). One egg is enough for 3-4 blackening products. Put the halves of eggs into the container. Nonsite (hang) on the line or thread, silver ware, place in a container and tightly close it with a lid. The first result of blackening will be visible after 20-30 minutes. For uniform coverage from time to time turn the piece. After 3-4 hours on the silver forms a stable black-brown coating. This way you can blacken the water, they do not darken and fade.
The blackening of silver with iodine. Silver product clean from fingerprints and dirt and a good cotton swab or swab RUB it with iodine. Then allow the silver to dry, preferably in the sun. When the product will darken and completely dry, grab toothpaste, squeeze some on a wool cloth and start to wipe the silver. Toothpaste replace abrasive tool, and where products have convexity, the silver glistens, and the basins will remain black. Then thoroughly rinse the product and dry with a clean cloth. The procedure can be repeated to obtain the desired color. This method of blackening is suitable for corrugated products and is suitable for flat rings and earrings.
Blackening silver with sulfuric ointment. Carefully RUB the silver product of sulfuric ointment. Turn on the hair dryer and heat the composition to a flowable state. When he drops will be passing through metal, let's see what the color looked silver. It should be uniform purple-black color. The Hairdryer shut off, silver ware wash with soap and water and dry. If necessary, the blackening process can be repeated. To emphasize the relief of the jewelry, Polish the product with a brush or abrasive cloth.
When blackening sulfuric ointment do not use on silver, a large amount of cream and warm it for a long time with the Hairdryer, otherwise the silver will darken greatly. If this happens, silverware should be soaked in ammonia and then Polish it with an eraser.
During the blackening of silver using eggs dark color becomes by the reaction of hydrogen sulfide with the surface of the jewelry, so it is especially important to seal the vessel where the process takes place