Welding Technology

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Welding: used machines, accessories & rotary tables
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BJB ADS-Basic Robotic Lighting Wiring System
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DAEWOO GDAW190AC Gasoline Powered Welding Machine
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Portugal, 4860-068 ARCO DE BAULHE
DAEWOO GDAW190AC Gasoline Powered Welding Machine
VARIOS VP10 V Spot Welding Machine
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OERLIKON PS 6,5 ER Spot Welding Machine
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3M Versaflo Respirator Systems
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United Kingdom (Great Britain), LU3 3BL Luton
3M Versaflo Respirator Systems
DAEWOO DAMINI-160IT Inverter Welder
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Portugal, 4860-068 ARCO DE BAULHE
DAEWOO DAMINI-160IT Inverter Welder
DAEWOO DAMINI-160IT Inverter Welder
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Portugal, 4860-068 ARCO DE BAULHE
DAEWOO DAMINI-160IT Inverter Welder
DAEWOO DAMINI-140IT Inverter Welder
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Portugal, 4860-068 ARCO DE BAULHE
DAEWOO DAMINI-140IT Inverter Welder
DAEWOO DAMINI-140IT Inverter Welder
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Portugal, 4860-068 ARCO DE BAULHE
DAEWOO DAMINI-140IT Inverter Welder
ENGEL ERC 34/0-E Robot
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Romania, 107400 Paulesti, Prahova
ENGEL ERC 34/0-E Robot
MILLER Maxstar 350 Tig Welding Machine
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REIS TYPRV20-16_RSVI Welding Cell
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Play
Germany, 89349 Burtenbach
REIS TYPRV20-16_RSVI Welding Cell
ERSA ECOCELL S018A Selective Soldering Machine
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HEINRICHSGLUCK TSV-35 INCLINABLE/INDEXABLE WELDING TABLE
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MECOME BR 1500 Longitudinal Welding Machine
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DUMETA D-BYT-500N welding turntable
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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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VALK WELDING Welding Robot
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Netherlands, 5126 BB Gilze
VALK WELDING Welding Robot
MIRAFU HB 06 Welding rotary tilting table
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Germany, 46342 Velen-Ramsdorf
MIRAFU HB 06 Welding rotary tilting table
SIEGMUND Sonderset 96 Welding Table Accessories
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MECOME BR1000 Longitudinal welding machine
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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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UWM WP 500 Welding table
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Germany, 46342 Velen-Ramsdorf
UWM WP 500 Welding table
UWM WP 500 T Welding table
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Play
Germany, 46342 Velen-Ramsdorf
UWM WP 500 T Welding table
PASSERINI AK 20 Container turning device
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Play
Germany, 46342 Velen-Ramsdorf
PASSERINI AK 20 Container turning device
WMT P-2400 x 1200+ Welding table / hole table
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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
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
JÄCKLE inoMig 400 Inert gas welding system
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Germany, 46342 Velen-Ramsdorf
JÄCKLE inoMig 400 Inert gas welding system
MEGEY BM-M-125 Beading and flanging machine
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Play
Germany, 46342 Velen-Ramsdorf
MEGEY BM-M-125 Beading and flanging machine
SIEGMUND 750 - 1,2 x 0,8 Nitriert Welding table / hole table
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MIGATRONIC Sigma One 300 Inert gas welding system
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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
CEBON MIG-400 PL Wire welding machine
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CEBON MIG-400 PL Wire welding machine
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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
WMT N-2000 x 1000 Welding table
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Germany, 46342 Velen-Ramsdorf
WMT N-2000 x 1000 Welding table
SIEGMUND SET 1 Welding table equipment
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Germany, 46342 Velen-Ramsdorf
SIEGMUND SET 1 Welding table equipment
WMT Basic-Set 2 Welding Table Accessories
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Germany, 46342 Velen-Ramsdorf
WMT Basic-Set 2 Welding Table Accessories

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.