Gas welding of metals
Are you interested in gas welding of metals from the supplier company AvecGlob? Here you will find interesting information on this topic
Classification
Gas welding (otherwise the MIG method) includes the mandatory use of an inert gas. The presence of such a gas protects the welding zone from penetration of air oxygen. Conventional gas welding includes technological solutions, when carbon dioxide or oxygen is added to the mixture. Such welding is called gas-arc welding.
The type of gas utilization also determines:
How deeply the weld penetrates into the metal welding
Characteristics of the welding arc
Mechanical properties of the weld
When choosing the type of gas used, it is best to look for the matching of the input gas data with those required for specific weld materials. Suitable gas must be consistent with the type of welding wire. Typically, the manufacturer provides several options, and the final choice of the type of gas is based on the cost of the process and consumables.
The four most common gases are:
argon
CO 2 / carbon dioxide
O 2 / oxygen
Helium (least common).
In most cases, the gases listed are used as a mixture, usually consisting of carbon dioxide and argon or oxygen. Oxygen is the cause of most welding defects, but in small percentages, mixed with other gases, it improves the characteristics of the arc. Argon and carbon dioxide can be used independently. In some cases, a protective gas containing argon, carbon dioxide and helium, or argon, carbon dioxide and oxygen are mixed.
The most common mixtures and gases are:
2% carbon dioxide and 98% argon
25% carbon dioxide and 95% argon
100% carbon dioxide
100% argon
Supplier — AvekGlob Company — offers at affordable prices from the manufacturer various metals and alloys, in the quantity and assortment that are required by the customer. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Basic recommendations for choosing the right gas
Welding of carbon steel can only be carried out with carbon dioxide, and it provides the deepest penetration of heat, the greatest amount of smoke and the roughest quality of the welded seam. The most widely used mixture is 25% carbon dioxide and 75% argon. A mixture of argon, carbon dioxide and oxygen is also often used.
Welding of stainless steel is usually carried out with a mixture of 2% carbon dioxide and 98% argon. In some cases, a shielding gas mixture containing 90% helium, 7.5% argon and 2.5% carbon dioxide
Aluminum welding is usually done only with argon, with one exception: if the welded aluminum is a thick plate (more than 3 mm), then helium is added to the composition.
Pure argon is used for welding copper, copper, nickel and magnesium alloys, as well as titanium.
. Supplier — the company AvekGlob — offers to purchase various metals, alloys, welded structures in any number and range of sizes. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.