Why is argon used for stainless steel welding?

Because stainless steel alloys have many elements, inert gas is required.

protection, inert gas is also required to protect the tungsten electrode.

1. When stainless steel TIG welding, pure argon is generally used, because stainless steel and tungsten electrode should be taken into account. (In the case of nickel-chromium-iron alloy TIG welding, sometimes due to poor fluidity, when the little finger is too poor, it is necessary to use mixed gas to weld stainless steel TIG, and there is no way.)

2. Argon arc welding.

Argon gas is charged during welding.

A welding technique that uses argon as a shielding gas. It is to pass argon shielding gas around the arc welding to isolate the air from the welding area and prevent oxidation in the welding area. Therefore, stainless steel, iron and hardware metals can be welded.

3. Argon is an ideal shielding gas, which is denser than air.

25% larger, which is conducive to the protection of the welding arc during flat welding, and reduces the consumption of shielding gas.

4. Argon is a chemically inactive gas, which does not react with metals even at high temperatures.

As a result, there is no oxidation and burning loss of alloying elements and a series of problems caused by it. Argon is also insoluble in liquid metals, so it does not cause pores.

5. Argon is a monoatomic gas, which exists in an atomic state, and there is no molecular decomposition or atomic endothermy at high temperatures. Specific heat capacity of argon.

and small heat conductivity, that is, the absorption is small, the heat transfer to the outside is also less, and the heat in the arc is not easy to be lost, so that the welding arc burns stably, and the heat is concentrated, which is conducive to the welding process.

Stainless steel is used for arc welding, and argon is used for protection, because it is an inert gas, it does not react at high temperatures, and it also isolates other gases to prevent its reaction. Hydrogen and oxygen welding, generally used for cutting.

Summary. The shielding gas used for flux-core stainless steel welding wire is: carbon dioxide gas.

There are two ways, one is gas shielded welding.

1. Mig MAG welding:

The shielding gas used is an active gas, such as carbon dioxide or a gas mixture;

2. MIG: It is the so-called argon, which generally uses pure argon (purity of or AR+2%O2.

The second type of stainless steel electrode is only suitable for thicker plates.

What gas is used to weld stainless steel.

Hello, I am your full-time solution today, and I am happy to answer for you The shielding gas used for solid stainless steel welding wire is: 98% argon + 2% oxygen, or 95% argon + 5% carbon dioxide gas.

The shielding gas used in the flux core stainless steel welding wire is: carbon dioxide gas in two ways, one is gas shielded welding 1, MIG MAG welding: the shielding gas used is active gas, such as carbon dioxide or mixed gas; 2、mig：

That is, argon, which is generally pure argon (purity is or AR+2%O2. The second type of stainless steel electrode is only suitable for thicker plates.

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Argon gas is used in TIG welding. Argon arc welding is to pass argon shielding gas around the arc welding, isolate the air outside the welding area, because argon is continuously sent in the high-temperature melt welding, so that the welding consumables can not contact with the oxygen in the air, so as to prevent the oxidation of the welding consumables.

TIG welding has many advantages:

1. Argon protection can isolate the adverse effects of oxygen, nitrogen, hydrogen and other gases in the air on the arc and molten pool, and reduce the burning loss of alloying elements;

2. The arc of argon arc welding is stable, the heat is concentrated, the arc column temperature is high, the welding production efficiency is high, and the heat affected zone is narrow;

3. Argon arc welding is open arc welding, which is convenient for operation and observation;

4. The electrode loss is small, the arc length is easy to maintain, and there is no flux and coating layer during welding, so it is easy to realize mechanization and automation.

Summary. Hello, I'll help you solve this problem! Can stainless steel and carbon steel be welded with argon arc welding.

The steps are as follows:

Ordinary carbon steel welding wire for TIG welding cannot weld stainless steel.

Before welding materials, you need to select welding rods or welding wires according to the standards, you can see the national standard GB T 8110 and other related welding wire standards.

The selection is generally based on the following principles:

1) The principle of equal strength, that is, the welding rod with the same strength grade as the base metal is selected. It is generally used to weld low-carbon steel and low-alloy steel.

2) The principle of the same composition, that is, the selection of electrodes with the same or similar chemical composition as the base metal. It is generally used for welding heat-resistant steel, stainless steel and other metal materials.

3) Principle of crack resistance Choose alkaline electrodes with good crack resistance to avoid cracks in the joints during welding and use. It is generally used for welding structures with large stiffness, complex shape, and dynamic load in use.

4) The principle of anti-porosity is limited by the conditions of the welding process, such as the inconvenience of cleaning the oil stain and rust of the weldment joint, and the acid electrode with strong porosity resistance should be selected to avoid the gas trapped in the weld during the welding process and the formation of porosity.

5) The principle of low cost Under the premise of meeting the requirements of use, try to choose welding rods with good process performance, low cost and high efficiency.

You can follow my steps to try it, and if you have any questions, you can give me feedback in time!

Can stainless steel and carbon steel be welded with argon arc welding.

Hello, I'll help you solve this problem! Can stainless steel and carbon steel be welded with argon arc The operation steps are as follows: The ordinary carbon steel welding wire of argon arc welding cannot weld stainless steel.

Before welding materials, you need to select welding rods or welding wires according to the standards, you can see the national standard GB T 8110 and other related welding wire standards. The selection is generally in accordance with the following principles: 1) the principle of equal strength, that is, the welding rod with the same strength level as the base metal is selected.

It is generally used to weld low-carbon steel and low-alloy steel. 2) The principle of the same composition, that is, the selection of electrodes with the same or similar chemical composition as the base metal. It is generally used for welding heat-resistant steel, stainless steel and other metal materials.

3) Principle of crack resistance Choose alkaline electrodes with good crack resistance to avoid cracks in the joints during welding and use. It is generally used for welding structures with large stiffness, complex shape, and dynamic load in use. 4) The principle of anti-porosity is limited by the conditions of the welding process, such as the inconvenience of cleaning the oil stain and rust of the weldment joint, and the acid electrode with strong porosity resistance should be selected to avoid the gas trapped in the weld during the welding process and the formation of porosity.

5) The principle of low cost Under the premise of meeting the requirements of use, try to choose welding rods with good process performance, low cost and high efficiency. You can follow my steps to try it, and if you have any questions, you can give me feedback in time!

May I. Hello dear! 309 can, argon arc welding wire can be divided into carbon steel, stainless steel, carbon steel and stainless steel combined with 309 welding wire, I hope to help you!

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