Men's luxury rings انگشترهای فاخر مردانه

Men's luxury rings are rings made from a combination of silver alloys - fodium, palladium - with stones. Beautiful and extraordinarily artistic rings that play the eye of every viewer and amaze everyone. This alloy is suitable for all different stones, including Ruby, agate, emerald, turquoise and other stones can be used.
What is Fedium?
Due to its high oxidation, silver metal changes color when exposed to oxygen and usually turns black. Therefore, this property of oxidation (weathering) must be removed. They combined the 70% silver and 30% palladium scales, which produced a glossy white alloy known as London silver.
Therefore, around the 60's AH, Ustad Hossein Jedi obtained a new alloy with a combination of silver, platinum and several other metals, and this alloy became known as fadium. It is close to platinum and requires less temperature to melt. This compound is usually the same as seventy percent silver and the remaining thirty percent palladium and several other metals that can be combined with silver.
What is Palladium?
Palladium or palladium is one of the chemical elements of the periodic table. Its short symbol is Pd and its atomic number is 46, and it is one of the rare metals and is silver and white. Palladium is a platinum group metal and has the lowest density and lowest melting point compared to other metals in this group. This rare metal is mostly obtained from copper and nickel mines.
Global production of palladium from mines in 2006 was about 222 tons, and most of it has been used to produce catalytic converters in the automotive industry, which convert toxic exhaust gases into harmless or low-risk compounds. The metal is also used in electronics, medicine (such as blood sugar test strips), dentistry, hydrogen refining, the chemical industry, aircraft and jewelry (such as white gold). The metal also plays an important role in the production of fuel cells that combine hydrogen and oxygen to generate electricity, heat and water.
Palladium is one of the most expensive metals in the world, and its price per ounce in 2020 was more than $ 2,000 (nearly $ 65,000 per kilogram). Most of the world's palladium is produced in Russia and South Africa, while the recycling of palladium-containing products, especially catalytic converters, is a major source of the metal.
If the workshops are equipped and can produce high temperatures, a larger scale of palladium can be combined with silver. It is filled with small and large lumps that can not be repaired.
The fact that some manufacturers produce fadiums that are more beautiful in color, sometimes approaching yellow or red, or sometimes very brittle and dry, is due to a formula that the manufacturers themselves have achieved. Alloys specialized in nickel, zinc, gold and even aluminum can be used, which usually remain a secret with the manufacturers themselves and are never considered a standard. Two people may both use the same combination, but one It will be more colorful than the other. It depends on the type of melting of the manufacturer which metal to melt first and then which metal to be added to it.
The type of melting furnace is also effective. Today, manufacturers mainly use oxygen and gas to heat heat directly on the metal, which causes a lot of oxygen to enter the molten material, which is the main cause of the furnaces and the brittleness of the fdium. This is a big problem. If this problem is not controlled, the fedium alloy will not find its main color (glossy gray and somewhat yellow) and will not have enough strength.

برای خرید طلا آنلاین به سایت کافه زر مراجعه کنید.