The "golden partner" of welding mixed gas is argon and carbon dioxide, making welding more
Corporate News
2026-01-29 13:44:43
In the field of welding, the use of mixed shielding gas is no longer a new phenomenon. Among the many "golden combinations", argon gas+carbon dioxide (Ar+CO ₂) is undoubtedly one of the most widely used partners. Especially with the ratio of 80% Ar+20% CO ₂ being commonly preferred, it can effectively balance welding quality and process adaptability, becoming a "tacit partner" in the hearts of many welders.
Why Ar+CO ₂?
Carbon dioxide shielded welding is widely used due to its low cost and deep penetration, but pure CO ₂ welding also comes with obvious disadvantages: large spatter, rough weld formation, and easy surface oxidation, which not only affect the appearance but may also hide hidden dangers such as pores and slag inclusions.
After adding an appropriate amount of argon gas to CO ₂, the welding process immediately becomes much gentler:
Significantly reduces spatter, making post weld cleaning easier
More stable arc, smooth and beautiful weld bead
Good fusion depth and width ratio, suitable for various joint forms
Suitable for various types of steel, especially carbon steel and low-alloy steel
Adjustable proportion, flexible response
The most common ratio in the market is 80% Ar+20% CO ₂, which is balanced in the welding of thin and medium thick plates. But one of the advantages of a mixture is its adjustability:
-When the sheet is thin, the argon gas ratio can be appropriately increased (such as 85% Ar+15% CO ₂) to further reduce the risk of burn through and improve surface quality.
-When a medium thick plate or a larger melting depth is required, the CO ₂ content can be slightly increased (such as 70% Ar+30% CO ₂) to enhance the penetration of the weld seam.
This flexible adjustment allows Ar+CO ₂ mixture to handle welding tasks with ease in different thicknesses and positions.
Widely applicable scenarios
Whether it is steel structure manufacturing, ship welding, pipeline installation, or mechanical manufacturing and maintenance, Ar+CO ₂ mixture gas is a reliable choice for melting electrode gas shielded welding involving carbon steel and low-alloy steel. It is particularly suitable for:
-In situations where there are certain requirements for the appearance of the weld seam
-I hope to reduce the mass production of subsequent cleaning processes
-All position welding, such as horizontal welding and vertical welding
Choosing a mixed gas is choosing a smarter and more efficient welding method. The Ar+CO ₂ partnership helps welders find the best balance between quality and efficiency with stable performance, beautiful forming, and flexible proportioning.
If you have also been troubled by the splashing and rough welds of pure CO ₂ welding, you may want to try switching to mixed gas mode - making welding more stable, beautiful, and easy.
Why Ar+CO ₂?
Carbon dioxide shielded welding is widely used due to its low cost and deep penetration, but pure CO ₂ welding also comes with obvious disadvantages: large spatter, rough weld formation, and easy surface oxidation, which not only affect the appearance but may also hide hidden dangers such as pores and slag inclusions.
After adding an appropriate amount of argon gas to CO ₂, the welding process immediately becomes much gentler:
Significantly reduces spatter, making post weld cleaning easier
More stable arc, smooth and beautiful weld bead
Good fusion depth and width ratio, suitable for various joint forms
Suitable for various types of steel, especially carbon steel and low-alloy steel
Adjustable proportion, flexible response
The most common ratio in the market is 80% Ar+20% CO ₂, which is balanced in the welding of thin and medium thick plates. But one of the advantages of a mixture is its adjustability:
-When the sheet is thin, the argon gas ratio can be appropriately increased (such as 85% Ar+15% CO ₂) to further reduce the risk of burn through and improve surface quality.
-When a medium thick plate or a larger melting depth is required, the CO ₂ content can be slightly increased (such as 70% Ar+30% CO ₂) to enhance the penetration of the weld seam.
This flexible adjustment allows Ar+CO ₂ mixture to handle welding tasks with ease in different thicknesses and positions.
Widely applicable scenarios
Whether it is steel structure manufacturing, ship welding, pipeline installation, or mechanical manufacturing and maintenance, Ar+CO ₂ mixture gas is a reliable choice for melting electrode gas shielded welding involving carbon steel and low-alloy steel. It is particularly suitable for:
-In situations where there are certain requirements for the appearance of the weld seam
-I hope to reduce the mass production of subsequent cleaning processes
-All position welding, such as horizontal welding and vertical welding
Choosing a mixed gas is choosing a smarter and more efficient welding method. The Ar+CO ₂ partnership helps welders find the best balance between quality and efficiency with stable performance, beautiful forming, and flexible proportioning.
If you have also been troubled by the splashing and rough welds of pure CO ₂ welding, you may want to try switching to mixed gas mode - making welding more stable, beautiful, and easy.
