What is TIG welding? Is TIG welding the same as electric welding?

Argon arc welding refers to a welding method that uses argon as a shielding gas, and uses argon to form a protective cover in the welding area to isolate the air, so as to obtain a good weld.

In our country, welding operations need to be licensed, welders are the type of work that belongs to the access category, in the professional qualifications of skilled personnel, only five of the 81 types of work in the access category, welders are one of them, and the actual situation is that most of the industry practitioners are unlicensed operations. With the continuous standardization of technology and the relevant requirements of the industry, more and more people want to take a welding certificate, the advantage of the certificate is still very large, first of all, the salary of the certificate and the non-certificate are very different, often able to reach more than double or higher level. Therefore, the issue of short-term welder training has naturally become a concern for practitioners.

Welding as an industrial "tailor" is a very important means of processing in industrial production, the quality of welding plays a decisive role in the quality of the product, so, what is the future development of welding technology?

Industry outlook. With the development of production, welding is widely used in aerospace, aviation, nuclear industry, shipbuilding, construction and machinery manufacturing and other industrial sectors, in China's economic development, welding technology is an indispensable means of processing. After entering the 21st century, welding is an important part of the manufacturing industry, and the rapid development, so it has brought unprecedented development opportunities to the welding industry.

At present, China consumes 300 million tons of steel every year (about tons of welded structure), and needs about 750,000 welding machines, and the welding industry will continue to grow in the next 8 10 years.

All belong to fusion welding.

But the principle is different.

1. Conceptual differences.

TIG welding. It is a welding technique that uses argon as a shielding gas. It is also known as argon gas shielded welding.

It's arc welding.

argon shielding gas is used around the area to isolate the air from the welding area and prevent oxidation in the welding area.

Arc welding generally refers to the popular electric welding, which is to use the electrode coated with paint on the outside as the electrode and filler metal, and the arc is burned between the end of the electrode and the surface of the workpiece to be welded.

Second, the difference between the welding process.

Arc welding process: The coating can produce gas to protect the arc under the action of arc heat on the one hand, and on the other hand, it can produce slag to cover the surface of the molten pool to prevent the interaction between the molten metal and the surrounding gas. The more important role of slag is to produce physicochemical reactions with molten metals.

Or add alloying elements to improve the weld metal properties.

Argon arc welding process: the use of argon gas to the protection of metal welding consumables, through high current to make the welding consumables melt into a liquid state on the welded substrate to form a molten pool, so that the welded metal and welding consumables to achieve metallurgical combination of a welding technology, because of the continuous delivery of argon in the high-temperature fusion welding, so that the welding consumables can not be in contact with the oxygen in the air, thereby preventing the oxidation of the welding consumables, so that stainless steel, iron hardware metals can be welded.

Prepare the TIG welding machine, oxygen cylinders, welding fittings and assembly tools.

How it works: 1. Prepare oxygen tank, argon arc welding machine and argon arc welding gun.

2. Link the argon arc welding torch to the argon arc welding machine.

3. Check whether the current is suitable for the argon arc welding machine, whether there is leakage, and check whether the oxygen cylinder is leaking.

4. Before welding, the grease, coating, lubricant and oxide film on the surface of the weldment must be removed. Head masks, gloves, work clothes, and work shoes must be worn to avoid ultraviolet and infrared burns from the arc light. The argon arc welding machine is equipped with a high-frequency arc starter, and the high-frequency electricity will burn the skin of the operator's hand, so the insulation performance of the welding and transportation scale handle must be checked by the head, and when the local space can not be ventilated, a fresh air mask or gas mask should be worn next to it.

5. TIG welding spot welding. Continuous welding. When using an argon arc welding machine to prevent burns, you need to wear protective glasses to protect your eyes, wear a mask, and protect your respiratory tract.

When you say electric welding, I think it refers to manual arc welding, which uses the coating outside the electrode to produce a shielding gas to protect the weld.

TIG welding, which uses argon gas to protect the weld.

Manual welding operation is flexible, suitable for complex welds and field operations, and small batch production. The disadvantage is that it needs to be sprayed.

Argon arc welding is mainly suitable for welding non-ferrous metals, such as aluminum, copper, stainless steel, etc., generally speaking, argon solitary welding is easy to hurt the eyes, because the infrared and ultraviolet rays of argon arc welding are dozens of times that of electric welding. The gas produced by electric welding is mainly manganese, which is easy to be poisoned if it is absorbed too much. So weld in a ventilated place.

Generally speaking, it's pretty much the same. I've been welding for so long, but I think they are all hurting, and if you're not careful, it's easy to cause peeling.

The main differences are that the properties are different, the characteristics are different, and the applications are different, as follows:

First, the nature is different.

1. Argon arc welding.

TIG welding technology is in ordinary arc welding.

On the basis of the principle of the use of argon.

The protection of metal welding consumables is a welding technology that melts the welding consumables into a liquid state on the welded substrate to form a molten pool through high current, so that the welded metal and the welding consumables can achieve metallurgical combination.

2. Electric welding. Electric welding refers to the use of electrical energy, through heating or pressure, or both, and with or without filler materials, so that the weldment can achieve atomic bonding.

Second, the characteristics are different.

1. Argon arc welding.

Current density. Large, heat concentration, high deposition rate, fast welding speed. In addition, it is easy to start arcing.

2. Electric welding. It can realize the welding between any two metal materials, as well as some metal materials and non-metal materials; It can be realized to make a large, economical and reasonable structure from small to large; Materials with different properties can be used in different parts of the structure to give full play to the characteristics of various materials. Welding with electricity can also be used to weld between ultra-thin and ultra-fine materials.

Third, the application is different.

1. Argon arc welding.

TIG welding is suitable for welding non-ferrous metals and alloy steels that are prone to oxidation.

Mainly used for welding of AL, MG, TI and their alloys and stainless steel); It is suitable for single-sided welding and double-sided forming, such as root welding and pipe welding; Tungsten TIG welding is also suitable for thin plate welding.

2. Electric welding. It is used in various industrial sectors such as machinery, electronics, construction, shipbuilding, aerospace, aviation, and energy.

Argon arc welding is the use of argon as the protective medium, carbon dioxide gas shielded welding used in the protective medium of carbon dioxide gas shielded welding.

Welding technology is divided into electric welding and argon fluorine welding, what is the difference between them? After reading the knowledge.