الذهب
Gold is considered one of the precious metals that are desirable in the jewelry industry, and gold goes through many steps to melt it and prepare it to start the process of crafting and forming jewelry, and before starting the formulation, the gold metal is chosen according to the standard, and pure gold is twenty-four karat gold, but it is soft and not suitable for making jewelry, and twenty-one karat gold More solid and stronger because it is mixed with other metals such as copper and silver.
equipment needed for gold smelting process
After preparing the required standard, the goldsmith begins the gold smelting process and needs the following equipment:
- Melting furnace: It is a furnace built of fiery stone and a fire is ignited inside it through a tube connected to a gas bottle. An electric furnace with the same specifications can be used.
- Melting crucible: It is a stone vessel with a cone-like shape and has a flat base with different sizes according to the quantity to be melted.
- Casting molds: They are molds of various sizes and shapes to suit the molds, some of them are wide and others are narrow.
- The holding handle: It is a tool for holding the powder after the gold has melted, and for pouring it into casting moulds.
- Substances that help in the process of melting gold: It is mostly peroxide.
- Carbon rod to stir the content of the crucible to homogenize the solution.
- Rolling machines: Rolling machines are divided into two types and can be combined into one machine, which is the wire and the pallet. This machine works to simplify and reduce the thickness according to length and width. There are machines that work to reduce the diameter of the wire to small sizes that reach noodles and are called disc machines. to the required softness.
gold smelting process
After preparing the equipment, we carry out the following operations for melting gold:
Read also:How do I clean gold at home?- Rolling process: The molten gold is poured into casting molds and cooled, then the rolling process comes, which is one of the important operations that take place on the ingot. Because the jeweler forms the pieces and measurements, taking into account the thickness and diameter, using rolling machines.
- wording: The drafting process differs according to the product to be manufactured. Each product has a special method in its work, such as the scissors for the goldsmith, which have different sizes and shapes because the goldsmith does not use his hand during work due to the use of fire, and the gas welding device that has different heads that can be exchanged to increase the strength of the flame, and tools The goldsmith also has the hammer, the hairsaw, the ruler, the hand templates and the smoothing tools such as files, the work table which is lined due to the high price of gold, the bed on which the assembly and welding process is carried out, and the welding utensils in which the solder is placed and cut into small pieces, and acids are used to return the gold to its color natural after the manufacturing process; Because gold turns black and the most important acid used is hypochlorous acid.
