Submerged Arc Welding Machine

Wuxi Lemar Machinery Equipments Co.,Ltd is a high-tech enterprise specializing in automated welding equipment and H-shaped steel equipment.We have many years of production experience in the automatic welding industry and CNC plasma cutting industry.
Our products are widely used in pressure vessels, petrochemicals, power stations, heavy machinery, ships, steel structure construction and other industries.
In addition to production and sales, Wuxi Lemar has established a special one-stop service for H beam, Pipe and Flange automatic welding production lines and accessories and maintenance of CNC plasma cutting machines.

A submerged arc welding machine is a welding machine that uses an arc to burn under a layer of flux for welding. Its inherent advantages of stable welding quality, high welding productivity, no arc light and little smoke make it the main welding machine in the production of pressure vessels, pipe sections, box beams and column steel structures, etc. In recent years, although many efficient and high-quality new welding machines have appeared, the application fields of submerged arc welding machines have not been affected in any way.

TIG Welding Machine
Tig Welding Machine Inverter Base is suitable for light & medium duty work.
Tungsten inert gas-welding is highly versatile, enabling industry professionals to join a wide range of small and thin materials.
Unlike stick welding, TIG machines need a clean, rust-free surface to create a quality weld. The machines are used to weld steel, inox steel, Chromoly, aluminum, nickel alloys, magnesium, Titanium, copper, brass, and bronze.

Flux-Cored Arc Welding Machine
FCAW or flux-cored arc welding is a variant of Gas metal arc welding, having a cored wired instead of solid wire being used in MIG-MAG Welding.
FCAW is a type of Gas Metal stick welding (GMAW) having a cored wire instead of a solid wire.
Flux core welders are generally used for thick metals and out-of-position welding. FCAW machines work equally well indoors and outdoors, and because they use a continuously-fed flux-filled electrode, there is no need for external shielding gas or to stop and restart the weld.

Energy Beam Welding Machine
The EWB machine employs a high-speed stream of tightly-focused electrons using magnetic fields and is applied to the base materials. The machine can join thick metals with thin metals or fuse different metals, and EWB can also weld specific points on the metals with little or no heat distortion in the welded areas.
Because the welder must perform this welding in a vacuum to prevent the electron beam from being absorbed by the air, the machine is not for home use. However, EWB is frequently used in power generation environments, plus the automotive, defense, medical, aerospace, and oil and gas industries.

Plasma Arc Welding Machine
Plasma-transferred stick welding machines (PTAW) are industrial-sized machines similar to TIG welders but with an anode surrounding the tungsten electrode. This anode constricts the arc to a laser-like precision and acts as a shield for the electrode, protecting it from the filler used in this process. Primarily used in the aircraft manufacturing industry, these welders are much more expensive than those we have discussed.

Atomic Hydrogen Welding Machine
Atomic hydrogen welding (AHW) machines use an arc generated between two tungsten electrodes and hydrogen shielding gas from an external cylinder. It's called atomic hydrogen welding because the arc separates the hydrogen into atomic form.
These welding machines require an experienced operator, and they are being replaced by the more popular MIG welders, partly because AHW is more costly. AHW machines are suitable for thin and thick materials and rapid welding situations.

The welding arc burns between the welding wire and the workpiece, and the arc heat melts the base metal and flux at the end of the welding wire and near the arc. The molten metal forms a molten pool, and the molten flux becomes slag. The molten pool is protected by the slag and flux vapor and is not in contact with the air. As the arc moves forward, the force of the arc pushes the liquid metal in the molten pool toward the back of the molten pool. During subsequent cooling, this liquid metal solidifies into a weld. The molten slag solidifies into a slag shell, covering the surface of the weld. In addition to mechanically protecting the molten pool and weld metal, slag also smelts with the molten metal during the welding process. Gold reacts, thereby affecting the chemical composition of the weld metal.

Submerged Arc Welding Machine, the workpiece to be welded and the welding wire are connected to the two poles of the welding power source. The welding wire is connected to the power source through sliding contact with the contact tip. The welding circuit includes welding power source, connecting cable, contact tip, welding wire, arc, molten pool, workpiece and other links. The end of the welding wire is continuously melted under the action of arc heat, so the welding wire should be fed continuously to maintain the stability of the welding process. . The wire feed speed should be balanced with the wire melting speed. The welding wire is generally fed by a wire feed roller driven by an electric motor. Depending on the application, the number of wires can be single, double or multi-wire.

Submerged Arc Welding Machine has two methods: automatic submerged arc welding and semi-automatic submerged arc welding. In the former, the wire feeding and arc movement are completed automatically by a special machine head, while in the latter, the wire feeding is done mechanically and the arc movement is done manually. During welding, flux is spread from a funnel in front of the arc.

● When welding with welding wires of different diameters, the actual welding current cannot exceed the applicable current range of the welding wire.
● Welding wires of different diameters must use corresponding contact tips and wire feed wheels.
● The connection between ground wire, welding cable and workpiece must be firm and reliable.
● The workpiece must be padded flat without any shaking, and the surface of the workpiece must be relatively smooth.
● Welding Machine (before welding, clean the flux slag stuck on the head of the welding wire? Then press and hold "Manual Wire Feeding" until the welding wire short-circuits the workpiece and automatically stops wire feeding).
● There will be a 2-second delay in the welding arc closing process at the end of the welding to avoid wire sticking.
● The flux flow depends on the height of the discharge sleeve from the workpiece, and the height of the discharge sleeve from the workpiece depends on the welding current. The smaller the welding current, the smaller the height of the discharge sleeve from the workpiece, and the smaller the flux flow. When welding with different currents, it is necessary to debug to find the optimal height (excessive flux flow may produce pores when welding with low current, so debugging is required to find the optimal height).