Welding Technology

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Welding: used machines, accessories & rotary tables
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TECNA 8007N Welder
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Belgium, 8750 Wingene

TECNA 8007N Welder

ELECTREX ALUMIG 295 C Welding Machine with SAFA Welding Station
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FRONIUS TRANSPULS SYNERGIC 4000 Welding Machine
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FRONIUS TRANSPULS SYNERGIC 3200 Welding Machine
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FRONIUS TRANSPULS SYNERGIC 3200 Welding Machine
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FRONIUS TRANSPULS SYNERGIC 3200 Welding Machine
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FRONIUS TRANSPULS SYNERGIC 4000 Welding Machine
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FRONIUS ROBACTA TC 1000 Touchless Welding-Torch Cleaning System
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2x Welding Machine
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Portugal, 5300-432 BAÇAL

2x Welding Machine

FRONIUS ROBACTA TC 1000 Touchless Welding-Torch Cleaning System
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FRONIUS ROBACTA TC 1000 Touchless Welding-Torch Cleaning System
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CROS-ARC 315W Elite AC/DC HF Mobile TIG Welder
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United Kingdom (Great Britain), RH13 5QR West Sussex

CROS-ARC 315W Elite AC/DC HF Mobile TIG Welder

COMEPRI Resistance Welding Machine
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Portugal, 5300-432 BAÇAL

COMEPRI Resistance Welding Machine

ESAB MIG L3001i Welding Machine
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Portugal, 5300-432 BAÇAL

ESAB MIG L3001i Welding Machine

AUDION 1020 MV-2 Vacuum Bag Sealer
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United Kingdom (Great Britain), RH13 5QR West Sussex

AUDION 1020 MV-2 Vacuum Bag Sealer

ESAB TIG 3001I TIG Welding Power Source
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CEA ZP28 Spot Welder
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United Kingdom (Great Britain), RH13 5QR West Sussex

CEA ZP28 Spot Welder

FRONIUS TRANSTIG 2500 Welding Machine
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Portugal, 5300-432 BAÇAL

FRONIUS TRANSTIG 2500 Welding Machine

ESAB MIG 3001I TIG Welding Power Source
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COMMERCY SOUDURE CY 386 MPRA Welding Unit
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LEIPOLD LSQ5 Welding Power Source
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Portugal, 5300-432 BAÇAL

LEIPOLD LSQ5 Welding Power Source

LEIPOLD LSQ5 Welding Power Source
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Portugal, 5300-432 BAÇAL

LEIPOLD LSQ5 Welding Power Source

LEIPOLD LSQ5 Welding Power Source
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Portugal, 5300-432 BAÇAL

LEIPOLD LSQ5 Welding Power Source

LEIPOLD LSQ5 Welding Power Source
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Portugal, 5300-432 BAÇAL

LEIPOLD LSQ5 Welding Power Source

FRONIUS ROBACTA TC 1000 Touchless Welding-Torch Cleaning System
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MUREX TM 160 Mobile MIG Welder
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United Kingdom (Great Britain), RH13 5QR West Sussex

MUREX TM 160 Mobile MIG Welder

CEBORA MIG 190C Mobile MIG Welder
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United Kingdom (Great Britain), RH13 5QR West Sussex

CEBORA MIG 190C Mobile MIG Welder

ELEKTROSTA MIG 340 CD Mobile MIG Welder
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United Kingdom (Great Britain), RH13 5QR West Sussex

ELEKTROSTA MIG 340 CD Mobile MIG Welder

CUT-75E Inverter DC Plasma Cutting Machine
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United Kingdom (Great Britain), RH13 5QR West Sussex

CUT-75E Inverter DC Plasma Cutting Machine

STERLING ThyMig 300 Mobile MIG Welder
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United Kingdom (Great Britain), RH13 5QR West Sussex

STERLING ThyMig 300 Mobile MIG Welder

CITOARC SOLOMIG 180 C Mobile MIG Welder
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United Kingdom (Great Britain), RH13 5QR West Sussex

CITOARC SOLOMIG 180 C Mobile MIG Welder

Racking With Welding Accessories
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United Kingdom (Great Britain), RH13 5QR West Sussex

Racking With Welding Accessories

WELD ARC 350.3 Mobile MIG Welder
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United Kingdom (Great Britain), RH13 5QR West Sussex

WELD ARC 350.3 Mobile MIG Welder

Flame Cutting Set on Trolley
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United Kingdom (Great Britain), RH13 5QR West Sussex

Flame Cutting Set on Trolley

Steel Welding Table
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United Kingdom (Great Britain), RH13 5QR West Sussex

Steel Welding Table

Steel Welding Table
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United Kingdom (Great Britain), RH13 5QR West Sussex

Steel Welding Table

COUGARTRON Inoxwpower Weld Cleaning Machine
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United Kingdom (Great Britain), RH13 5QR West Sussex

COUGARTRON Inoxwpower Weld Cleaning Machine

HACONA C-320 Bag Sealer
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United Kingdom (Great Britain), RH13 5QR West Sussex

HACONA C-320 Bag Sealer

ESAB LAF 635 DC Submerged Arc Welding Machine
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SIEGMUND Welding Table Professional 750 - 3000x1500x200
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MERKLE HighPulse 354 Welding Machine
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Poland, 58-560 Jelenia Góra

MERKLE HighPulse 354 Welding Machine

EWM PICOMIG 305 D 3 PULS TKG Welding Unit with Cooling Unit
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Germany, 52511 Geilenkirchen

EWM PICOMIG 305 D 3 PULS TKG Welding Unit with Cooling Unit

ESAB WARRIOR 500i Welding Machine
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Poland, 58-560 Jelenia Góra

ESAB WARRIOR 500i Welding Machine

ELMATECH MIDISPOT VISION AV Spot Welder
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Germany, 52511 Geilenkirchen

ELMATECH MIDISPOT VISION AV Spot Welder

Welding Table 3500 x 2000
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Poland, 58-560 Jelenia Góra

Welding Table 3500 x 2000

Welding Table 3500 x 2250
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Poland, 58-560 Jelenia Góra

Welding Table 3500 x 2250

Welding Rotator
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Poland, 58-560 Jelenia Góra

Welding Rotator

MERKLE MobiTIG 304 DC Welding Machine
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Poland, 58-560 Jelenia Góra

MERKLE MobiTIG 304 DC Welding Machine

DALEX PMS 11-4 Spot Welder
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Germany, 52511 Geilenkirchen

DALEX PMS 11-4 Spot Welder

Welding Table 2500 x 1600
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Poland, 58-560 Jelenia Góra

Welding Table 2500 x 1600

CLOOS GLW 300 T welding machine
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Germany, 71384 Weinstadt

CLOOS GLW 300 T welding machine

CLOOS MINI GL 164 I-H welding machine
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Germany, 04895 Falkenberg

CLOOS MINI GL 164 I-H welding machine

STAHLWERK MIG 200 ST IGBT welder
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Germany, 04895 Falkenberg

STAHLWERK MIG 200 ST IGBT welder

LORCH C 2603 Welding Device
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Germany, 58285 Gevelsberg

LORCH C 2603 Welding Device

EWM WEGA 330 MIG welder
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Germany, 85088 Vohburg

EWM WEGA 330 MIG welder

Welding machines are used to permanently bond workpieces together. They are mainly used for the processing of metal, but they have also found their application in the welding of plastic. There is a difference between welding machines and the welding equipment, where welders can be counted in. Welders are a component of a welding machine, which are mobile and can be used separately as well. Most of the classic welding machines are stationary, as they are used for mass production and normally installed on a specific spot in a production line. The type and composition of a welding machine are usually determined by the thickness of the workpieces it will be processing.

A welding machine works using a thermal melting process on two surfaces. The melting process is done either on a specific spot or along a seam on the workpieces' surfaces and it is pressed together using high pressure, before cooling down and solidifying. This results in a permanent and substantial bond between the two workpieces, which can only be reversed if the workpiece is destructed. Other uses of welding include build-up welding and closing up of holes. For these purposes, hand-held welding equipment is used instead of welding machines.

  • Used to permanently bond workpieces together
  • Mainly used for the processing of metal
  • Type usually determined by the thickness of the workpieces
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There is a large variety of welding machines and processes, which differ in their application and the necessary qualifications for their use. When it comes to different types of welding machines, the most commonly used ones are:

  • Spot welding machine
  • Arc welding machine
  • MIG welding machine
  • Gas welding machine
  • TIG welding machine
  • Submerged arc welding machine
  • Inverter welding machine
  • AC/DC welding machine

The welding machinery listed above is used in a variety of welding processes, the simplest probably being spot welding, performed with the use of a special machine. This process, along with electrode or arc welding, is used in the mass production of thin-walled metal products. Here, specially moulded pre-products are fixed onto the welding press and welded onto one another with melt-flows. In addition to the classic spot welding machine, a spot welding gun is used for big and complicated products, such as automobile bodies. In combination with industrial robots, spot welding machines can be a very efficient way to automatically bond metal products together.

MEGATRONIC Welding machine in use

Arc welding machinery

Arc welding is a process of joining one metal to another with the use of electricity, by creating enough heat to melt the metal, which, after cooling, results in the binding of the two melted metals. An arc welding machine uses a power supply to make an electric arc between the base material and the electrode, in order to melt the metals at the welding point.

A special type of arc welding is submerged arc welding. A submerged arc welding machine is used for the processing of very thick-walled workpieces, for example, large tubes or pipes. During this process, a powder made out of iron oxide is put upon the welding spot instead of using a shielding gas. This is a complicated process and the submerged welding machines should only be used by skilled workers with high qualification and experience levels. Generally, the submerged arc welding process is characterized by a very comprehensive quality control. During the different work steps in the use of a submerged arc welding machine, the fatigue strength of the welded seal is regularly checked.

Electric welding can be performed using further special types of welding machines – such as an inverter welding machine, or AC/DC welding machine. The main advantages of an inverter welding machine, when compared to the conventional one, are its small and compact size and lower power consumption.

The terms AC (Alternating Current) and DC (Direct Current) depict the polarity of the electrical current, which is being produced by a welding machine and which passes through the electrode. An AC/DC welding machine, as opposed to a conventional AC welder, has the capability of employing both alternating and direct current.

Gas welding machines are used to bring the base material to a melting point with an oxy-acetylene flame. At the same time, a filler rod is introduced that is continually being melted. This process is particularly useful for build-up welding to close up openings, unevenness or gaps in the material. A gas welding machine is also particularly applicable in the welding of cast iron. Gas shielded welding is, along with arc welding, the most widely used process. Through a continual emission of shielded gas, oxygen is prevented from reaching the welding spot, as that would result in burn holes. Gas shielded welding machines can either be hand-held or fully automatic. During this welding process, one can choose between using metal inert gas welding (using an MIG welding machine), metal active gas welding (MAG) or wolfram-inert-gas welding (WIG).

Some of the well-known welding machine manufacturers are MESSER, ROTH, WALTER and KIEHNE. Although it is possible to find simple used welding machines for a price of a few hundred euros, some of the more complex used welding machinery can cost more than ten thousand euros. High-quality used welding machines for sale are offered by Surplex on a regular basis, and it is often possible to buy them at competitive prices in our numerous industrial auctions.