Difference between laser welder and arc welder

        What is the meaning of welding? Welding is a kind of processing technology which makes two workpieces melted together by heating and high pressure. At present, welding technology is used in a wide range of applications. There are different types of welding methods. Laser welding and argon arc welding are two of these types. Many people want to know the direct difference between laser welding and argon arc welding, Aohua Laser Tech will explain it to you in detail in the following.

1.Laser welding

        Laser welding is a type of high-energy beam welding. Laser welding makes use of a focused laser beam composed of a high-powered stream of coherent monochromatic photons as a heat source.

        Laser welding usually includes continuous laser welding or pulse laser welding. Laser welding has a lot of advantages. Firstly, laser welding does not need to be carried out in a vacuum; Secondly, laser welding makes precise energy control possible, so laser welding machines are always used to weld precision components. Laser welding can be applied to many metals and it is particularly well suited to solve different welding problems. Laser welders are now widely used in the mould repair industry, the sheet metal welding industry and the jewellery welding industry.

2.TIG welding

        TIG welding is a type of electric arc welding method, which makes use of heat source provided by burning between welding wires and the workpiece. In TIG welding method, it requires argon gas emitted by the torch nozzle to shielded arc welding process.

        TIG welding is currently one of the commonly used welding methods and can be applied many different metals, including carbon steel, alloy steels, stainless steel, aluminium, magnesium, copper, titanium, zirconium and nickel alloys. TIG welders used to be very popular for repairing molds. However, there are some weakness of TIG welding machines: 1. rough welding effect; 2. Large heat-affected area; 3. large welding seam. By now, more and more users chose to have laser welding machine  to repair precision molds. 

3.Which is better: laser welding or TIG welding?

        Argon arc welding method needs shielding gas. TIG welders are often used to weld thin workpieces, but its welding speed is slower and the heat input is much greater than that of laser welding, which will cause deformation on the workpieces. On the contrary, laser welders are characterised by a small heat-affected area, small welding seams, faster welding and short cooling time.

        In the field of welding precision moulds, laser welding machines are gradually become the most popular welding equipment and are replacing traditional TIG welders worldwide.