4 main topics about gold (introduction, properties, plating and paint)

You must have thought about the importance and value of gold and why it is worth it. In this article, we want to introduce gold, its properties and characteristics, as well as its gold plating and color.

Introducing Gold
Gold is an element of the periodic table known as au, which stands for aurum. This metal is very flexible and is found in nature in 999 pure carats. The pure form of gold is very soft and for use in the gold industry, it is combined with other alloys to obtain the desired flexibility and it is used to make all kinds of jewelry, this metal is easily formed by special tools. This metal can be found in pristine nature in the form of pieces between rocks, alluvial sediments and the like. Of course, it should be noted that its pure is also used to produce ingots. The gold metal is found in yellow. This metal is not reactive with other elements and this makes it a special and valuable metal that has been valued and popular since the beginning of history and events and has been used in minting coins, ornaments and the like. . . . . . . . . . . . . Also in the past, this precious element was the standard for a certain amount of money in some countries. Today, in addition to the topic of capital and decorative applications, electronic wiring is also used in the dental and electronics industries due to its high electrical conductivity.

Properties of gold
Gold has many properties that naturally have these benefits. Like its warm nature, which is very useful for women. Although rare, there is enough to take advantage of its properties. Proper cleaning, practicality, resistance to rust and abrasion and special paint are the features of this element that is not seen in other metals or is minimal. Gold has the property of flexibility, which means that it can be divided into very thin and small sheets and strands and made in any shape and appearance. It also has a high density. It should be noted that gold can be hammered so much that it becomes a very thin sheet through which light passes and transient light turns bluish green because gold blocks red and yellow light. . . . . . . . . . . . Strongly reflects. This feature, like astronauts' clothing, protects against infrared rays and heat.

Gold is resistant to most acids and does not dissolve, but "royal acid" is used to dissolve it.

In the past, gold was used as a metal that has many properties for the human body and health, and one of the uses of it for fear is that when a piece of gold is thrown into the water and the person who is scared eats it. . . . . . . . . . . . . . . . . . . This is also confirmed by Ibn Sina. And over time in the eighteenth century, when Europeans became acquainted with this practice and saw its effect on the people, they sought to discover it and realized that it was entirely scientific.

Another property of gold is its antibacterial properties and it is said to reduce some infections, for example, a woman who has eye pain and if she uses gold inside the eye, the pain will go away.

It is also used in medicine to clear blocked arteries and regulate heart rate and heart disease, especially in women. Regulates blood pressure, relieves stomach ulcers and stomach ailments. Some people with rheumatism and osteoarthritis relieve pain by injecting liquid gold. Can be added to foods as an additive. It can be twisted and turned into yarn to be used in embroidery and the like.

Gold plating
Have you ever wondered why some golds are white and others are yellow or other colors or how this color change happens? There is an important part of the gold industry called gold plating that when buying gold, to decorate it as much as possible, the seller suggests that it shine or choose a piece of your favorite gold and paint it according to your taste. Change yourself It should be noted that this does not take much time and is done in almost all workshops immediately, of course, if the plating color you choose is common! In the following, we are going to deal with one of the sections that we will explain about plating.

By electric current, when we cover or cover a piece of gold with water, which usually contains brilliant and valuable alloys such as silver, radium, platinum and of course gold, we have done electrolytic or electrical plating. Which covers precious metals. In this way, in the solution by the positive ions, the metal to be coated is added as a layer to the piece. By doing this, we have several goals that not only make gold shiny, transparent and eye-catching, but also one of the beauty needs of jewelry products, and also increase the resistance of gold to abrasion, corrosion, rust, oxidation and scratches. It is not the current plating that has been done in this century, but it has been done for more than a few hundred years, especially in the field of jewelry.

The most popular, brightest and most beautiful plating is gold plating and it is so common among all the people of the world that even other exchange metals such as silver are plated with gold to have a striking effect. It should be noted that all metals can be plated with gold, but some must do other work before gilding.

999 or pure gold is commonly used for plating. The difference between gold plated metal and other decorative elements such as toilet and toilet components, shaped dishes, etc. is in its thickness, so that for jewelry with a thickness of about 0.75 to 2.5 and other items 0.5 to 3 microns. This coating includes several colors including: gold, pale yellow (lemon), white, copper, pink, rose gold, red and green. Of course, it should be noted that decorative items, which are not usually made of silver or gold, and are often made of aluminum, steel, iron or other hard metals, are essential for you to enjoy your gold plating. They are coated with a layer of nickel and then coated with gold. The reason for the popularity and widespread use of gold plating, which is used everywhere, whether decorative, industrial or other items, can be varnish, gloss, as well as the beauty of products and also make them valuable.

It should be noted that plating includes two other parts that are done before all the above operations.

1. Gold Payment:

In order for the gold to be completely polished and smooth, steps must be taken so that the gold water is well absorbed on it. The first step is to smooth the work with a tool that is well surrounded by a hair brush, felt or cotton wool. . Polishing oil is used to make the product more radiant.

2. Gold Washing:
This step is done after payment, which is done by a device called ultrasonic. In this way, an ultrasonic washing liquid is poured into the machine to wash the gold and washed with an electric current. This flow is used for this purpose to repair and shine gold edges and very small seams. After this, the product is washed with city water to remove its special liquid and then plated.

But it must be said that if you want the gold you use to be whatever it is, it will always be eye-catching, depending on the type and duration of use, how often you have to paint and wash it.

Gold alloy
From the past until today, alchemy has been one of the professions that has a unique experience and practice, but before that, it is better to give a brief explanation about alchemy. Alchemists are people who look for precious metals and combine these elements to achieve better and more valuable alloys than the natural state of metals in nature. These compounds have positive and effective reasons, one of which is usually the use of the useful efficiency of each metal. For example, by combining several metals or elements, each of which has important properties and characteristics, to achieve a very valuable alloy with greater strength. You may be interested to know that the most widely used gold is not made entirely of gold metal but is a gold alloy. Now that you realize that the gold you have been using for a long time is not pure gold, I suggest you do not worry because the price set for 750 gold is based on the amount of impurities and the composition of other metals and you should know that the highest grade of gold used in Iran 18 is gold. This is a cutie. Or 750 and is very valuable. The use of gold alloy is done for several reasons, one of which is its strength, which is strengthened by combining with other metals for use in the jewelry industry. Of course, the base metal in these alloys is gold. Another reason for this is the color of gold, which we will explain in almost detail below.

If we want to achieve the desired color without gold plating, we must use enough metals when pouring gold and we will explain to you what percentage of metal compounds and what color of 18-carat gold they give us.

Bright yellow = 75% gold, 12.5% copper, 12.5% silver

Dark yellow = 75% gold, 15% copper, 10% silver

White = 75% gold, 10% palladium, 10% nickel, 5% zinc

White = 75% gold, palladium and 25% platinum

Red = 75% gold, 25% copper

Pink = 75% gold, 20% copper, 5% silver

Rose gold = 75% gold, copper 22.25%, silver 2.75

Champagne = 75% gold, 25% silver

Champagne = 75% gold, 23% copper, 2% cadmium

Green = 75% gold, 15% silver, 6% copper, 4% cadmium

Gray = 75% gold, 17% iron, 8% copper

Gray = 75% gold, 25% palladium