Argon-arc welding with tungsten electrode
Are you interested in argon-arc welding with tungsten non-consumable electrodes from the supplier company AvecGlob? Here you will find interesting information on this topic /
General information about the process
Argon-arc or gas-shielded arc welding is the most popular method of electric welding of special steels and alloys with special parameters of weldability. Argon, as chemically inert gas, is used to protect the bath with the melt from the effects of atmospheric air during welding. In industry
Argon is produced as a by-product in the separation of air to produce oxygen. Argon is supplied in steel cylinders at a pressure of 150 atmospheres. Purified argon contains 97−98% of argon, whereas industrial argon
may contain no more than 13−14% nitrogen. The convenience of argon for use as protective gas is also in the fact that it does not form chemical compounds even at the welding arc welding temperature.
Argon is a cheap gas, so the cost of its use in welding is low. Sometimes up to 5% of hydrogen is added to the argon: this provides an increased welding speed and penetration in the welding of stainless steel and nickel alloys.
The addition of 30% helium to argon also increases the welding speed and provides a deeper penetration of heat into the thickness of the joined products, and is therefore used in the welding of aluminum and its alloys, as well as copper. However, the mixture of argon with helium is significantly more expensive.
Supplier — AvekGlob Company — offers at affordable prices from the manufacturer tungsten non-consumable electrodes in the range, suitable for use in the processes of argon-arc welding. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Technology of argon-arc welding
Automatic argon-arc welding was first successfully used for welding of thin stainless steel, aluminum and its alloys. The argon arc process can use either non-consumable (tungsten) or consumable electrodes. With a non-consumable electrode, the arc is maintained between the tungsten electrode and the workpiece. The argon shield is formed around the electrode.
The arc burns between the tungsten electrode and the blank inside the protective layer of the inert gas, which excludes the penetration of oxygen from the atmosphere, and prevents contamination of the electrode and molten metal.
A hot tungsten arc ionizes the argon atoms inside the screen to form a gas plasma consisting of an almost equal number of free electrons.
The source of heat in the process of arc welding with an inert gas is the electric arc between the tungsten electrode and the base metal. The electrode is shielded by argon flow.
Tungsten electrodes usually use direct current, and with consumable metal electrodes — variable.
This process is used for welding light alloys, some non-ferrous metals, especially aluminum, copper and their alloys, as well as stainless steel.
In the aviation industry, argon arc welding is used on a large scale. Before use, argon should be dried by passing through a caustic or silica gel. Tungsten arc with argon protection from gas screens allows welding these metals and a wide range of ferroalloys.
Supplier — the company AvekGlob — offers to purchase in the range of tungsten non-consumable electrodes used in arc welding processes with argon. 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.