Welding Technology

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Welding: used machines, accessories & rotary tables
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ELECTREX ALUMIG 295 C Welding Machine with SAFA Welding Station
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KUKA KR30L6-2 Welding Cell
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Spain, 46136 Museros
KUKA KR30L6-2 Welding Cell
SOYER KTS-850 CNC stud welding system
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Germany, 73235 Weilheim Teck
SOYER KTS-850 CNC stud welding system
2500 Ø clamping plate
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Netherlands, 4873 LA Etten-Leur
2500 Ø clamping plate
DUMETA D-BYT-500N welding turntable
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Play
Germany, 46342 Velen-Ramsdorf
DUMETA D-BYT-500N welding turntable
SIEGMUND 750 - 3,0 x 1,5 Nitriert Welding table / hole table
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MIRAFU HB 12 Welding rotary tilting table
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Germany, 46342 Velen-Ramsdorf
MIRAFU HB 12 Welding rotary tilting table
SIEGMUND Sonderset 96 Welding Table Accessories
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SIEGMUND 750 - 2,4 x 1,2 Nitriert Welding table / hole table
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WMT 2900x1400 nitri Welding table
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Germany, 46342 Velen-Ramsdorf
WMT 2900x1400 nitri Welding table
WMT DZG 5 Vessel Turning Unit
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Germany, 46342 Velen-Ramsdorf
WMT DZG 5 Vessel Turning Unit
SIEGMUND 750 - 2,0 x 1,0 Nitriert Welding table / hole table
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WMT P-2990 x 1490 Welding table / hole table
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Round fixture plate
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Netherlands, 4873 LA Etten-Leur
Round fixture plate
UWM WP 500 Welding table
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Germany, 46342 Velen-Ramsdorf
UWM WP 500 Welding table
FANUC R-2000 iB 210 F Robot Welding Cell
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Germany, 65428 Rüsselsheim
FANUC R-2000 iB 210 F Robot Welding Cell
WMT P-2400 x 1200 Welding table / hole table
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WMT 2400x1200 nitri Welding table
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Germany, 46342 Velen-Ramsdorf
WMT 2400x1200 nitri Welding table
SCHMIDT BITTNER TPMP5-WMA Spot welder
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SIEGMUND SET 2 Welding Table Accessories
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Germany, 46342 Velen-Ramsdorf
SIEGMUND SET 2 Welding Table Accessories
SIEGMUND Basic-Set 3 / 28 Welding table accessories
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WMT P-2400 x 1200 Welding table / hole table
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WMT 2000x1000 nitri Welding table
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Germany, 46342 Velen-Ramsdorf
WMT 2000x1000 nitri Welding table
SIEGMUND 750 - 1,2 x 0,8 Nitriert Welding table / hole table
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CEBON MIG-400 PL Wire Welding Machine
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CEBON MIG-400 PL Wire Welding Machine
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WMT Basic-Set 3 Welding table accessories
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Germany, 46342 Velen-Ramsdorf
WMT Basic-Set 3 Welding table accessories
WMT P-2000 x 1000 Welding table / hole table
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UWM UWM 3 Welding table
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Germany, 46342 Velen-Ramsdorf
UWM UWM 3 Welding table
WMT PM 1200 x 800 welding lifting table
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Germany, 46342 Velen-Ramsdorf
WMT PM 1200 x 800 welding lifting table
WMT P-1000 x 1490 Welding table
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Germany, 46342 Velen-Ramsdorf
WMT P-1000 x 1490 Welding table
UWM UWM 2 Welding table
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Germany, 46342 Velen-Ramsdorf
UWM UWM 2 Welding table
ESAB WARRIOR 500i Welding Machine
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Poland, 58-560 Jelenia Góra
ESAB WARRIOR 500i Welding Machine
WMT N-2000 x 1000 Welding table
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Germany, 46342 Velen-Ramsdorf
WMT N-2000 x 1000 Welding table
CASTECH GF 35 1000 welding machine with cooling
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WMT Basic-Set 2 Welding Table Accessories
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Germany, 46342 Velen-Ramsdorf
WMT Basic-Set 2 Welding Table Accessories
ASPA ZGb-80 Welder
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Poland, 63-322 Gołuchów
ASPA ZGb-80 Welder
Welding Table 2550 x 2100
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Poland, 58-560 Jelenia Góra
Welding Table 2550 x 2100
UWM WP 350 Welding table
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Germany, 46342 Velen-Ramsdorf
UWM WP 350 Welding table
AARDING Wp 63 RL Spot welding machine
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Germany, 46342 Velen-Ramsdorf
AARDING Wp 63 RL Spot welding machine
RÜBENACH 3000 x 2000 Welding table / assembly table
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SIEGMUND Basic-Set 2 / 28 Welding table accessories
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SIEGMUND SET 1 Welding table equipment
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Germany, 46342 Velen-Ramsdorf
SIEGMUND SET 1 Welding table equipment
BÖHLER URANOS 2000 SMC MIG / MAG welding machine
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WMT P-1200 x 800 Welding table / hole table
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Germany, 46342 Velen-Ramsdorf
WMT P-1200 x 800 Welding table / hole table
UWM UWM 1 Welding table
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Germany, 46342 Velen-Ramsdorf
UWM UWM 1 Welding table
FRO FILCORD FROMATIC 800 TH Welding device with submerged ARC
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MAHE Compact WK420 Welding machine
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Germany, 91717 Wassertrüdingen
MAHE Compact WK420 Welding machine
WMT 1200 x 800 nitri Welding table
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Germany, 46342 Velen-Ramsdorf
WMT 1200 x 800 nitri Welding table
WMT P-1200 x 1200 Welding table
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Germany, 46342 Velen-Ramsdorf
WMT P-1200 x 1200 Welding table

CLOOS GLW 300 T welding machine
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Germany, 71384 Weinstadt

CLOOS GLW 300 T 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

EWM WEGA 401 welding machine
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Germany, 85088 Vohburg

EWM WEGA 401 welding machine

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.