- different kind of welding
- the assembly work of industrial equipment and piping (stainless steel)
- stainless steel , aluminum and black metal welding works
- we install and manufacture small kinds of metal structures
- we provide, where necessary,the assambly of metal structures and other welding services
- welding services at ship building around the world
We use a variety of welding processes : TIG , MMA , MIG , MAG
TIG – elding is a manual welding process that requires the welder to use two hands to weld. What separates TIG welding from most other welding processes is the way the arc is created and how the filler metal is added! When TIG Welding one hand is used for holding the TIG torch that produces the arc and the other hand is to add the filler metal to the weld joint. Because two hands are required to weld; TIG welding is the most difficult of the processes to learn, but at the same time is the most versatile when it comes to different metals. This process is slow but when done right it produces the highest quality weld! TIG welding is mostly used for critical weld joints, welding metals other than common steel, and where precise, small welds are needed.
MMA – Manual Metal Arc (MMA) welding is the most flexible and one of the most widely used arc welding processes. It involves striking an arc between a covered metal electrode and a workpiece. The heat of the arc melts the parent metal and the electrode which mix together to form, on cooling, a continuous solid mass. The central metal electrode or core wire acts as a consumable, providing the filler metal for the weld. MMA welding can be used to join most steels, stainless steels, cast irons and many non-ferrous materials. For many mild and high-strength carbon steels, it is the preferred joining method.
MIG – welding was developed in the 1940’s and 60 years later the general principle is still very much the same. MIG welding uses an arc of electricity to create a short circuit between a continuously fed anode (+ the wire-fed welding gun) and a cathode ( – the metal being welded). The heat produced by the short circuit, along with a non-reactive (hence inert) gas locally melts the metal and allows them to mix together. Once the heat is removed, the metal begins to cool and solidify, and forms a new piece of fused metal. A few years ago the full name – Metal Inert Gas (MIG) welding was changed to Gas Metal Arc Welding (GMAW) but if you call it that most people won’t know what the heck your talking about – the name MIG welding has certainly stuck. MIG welding is useful because you can use it to weld many different types of metals: carbon steel, stainless steel, aluminum, magnesium, copper, nickel, silicon bronze and other alloys.
MAG – Gas Metal Arc Welding or welding with shielding gas, as it is often called, is a welding arc process which utilizes the heat of an electric arc established between a continuoually feeded wire and the workpiece. During this process the wire will melt and the weld metal is transferred to the workpiece. The weld pool is always protected by a shield of gas in order to protect both the melting wire and the weld pool from the oxygen and nitrogen in the air. If these gases enter into the shielding gas atmosphere, it may cause porosities in the weld. Exterior disturbances such as draugths from open doors and windows may cause the shielding gas to blow away. Also ventilating air currents may influence on the welding place and the shielding gas. The shielding gas is usually divided into two submethods according to the applied type of shielding gas.