Welding Machines

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Welding Machines

49 used machines found

Welding: used machines, accessories & rotary tables

Top offers: Welding Machines

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BALLIU MEGACUT 5 A 3-D Laser Cutting Machine
Baden-Württemb…
on request
anytime
BETOX 1307-1 Welding turntable
Velen-Ramsdorf
1 Bid
16,000 €
closed
LAZPIUR 5 Lts Welding Machine for boilers
Arrasate-Mondr…
0 Bids
4,250 €
31/01/2019 11:56
WMT 2000x1000 Welding Table
Velen-Ramsdorf
8 Bids
1,950 €
closed
UWM UWM 3 Welding table
Velen-Ramsdorf
7 Bids
1,800 €
closed
UWM UWM 2 Welding table
Velen-Ramsdorf
4 Bids
1,350 €
closed
UWM UWM 1 Welding table
Velen-Ramsdorf
4 Bids
1,200 €
closed
LORCH MX 350 Welding Machine
Holm
21 Bids
850 €
closed
UWM UWM 0,5 Welding turntable
Velen-Ramsdorf
3 Bids
830 €
closed
TEKA FILTOO welding fume extraction
Velen-Ramsdorf
3 Bids
760 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
750 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
750 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
750 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
750 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
750 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
750 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
750 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
750 €
closed
D + S Fix Spot Welding Station
Solingen
0 Bids
720 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
650 €
closed
ISEA SP Point welder
Vicopisano (Pisa)
0 Bids
560 €
17/01/2019 10:53
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
550 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
550 €
closed
SERRA Fix Spot Welding Station
Solingen
0 Bids
550 €
closed
SERRA Fix Spot Welding Station
Solingen
0 Bids
550 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
550 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
550 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
550 €
closed
D + S Fix Spot Welding Station
D + S Fix Spot Welding Station
Solingen
0 Bids
550 €
closed
OMICRON PRISMA 75 PE Sleeve Welding Device
Kölleda
0 Bids
500 €
closed
Fix Spot Welding Station
Fix Spot Welding Station
Solingen
0 Bids
480 €
closed
Opportunity
ELECTRO-ARC MIG 356 ai Continuous wire welding
Vale de Cambra
0 Bids
400 €
18/12/2018 12:09
Opportunity
JOCAR JP 50 C Spot welding
Vale de Cambra
0 Bids
400 €
18/12/2018 12:22
Opportunity
DAIDEN AUTO CR Fx 351 2 continuous wire weldings
Vale de Cambra
0 Bids
400 €
18/12/2018 12:08
Opportunity
TEKNA TK 259 Automatic pneumatic L-welding
Vale de Cambra
0 Bids
350 €
18/12/2018 12:04
COMMERCY SOUDURE CY 386 MPRA Welding Machine
Borgaro Torinese
0 Bids
200 €
closed
CEA DC-400-CVT MIG-MAG Welding Machine
Venafro (IS)
0 Bids
200 €
09/01/2019 11:07
CEA TRI-ARC 354 Welding Machine
Venafro (IS)
0 Bids
200 €
09/01/2019 11:08
SISMA S2 Welding Machine
Bassano del Gr…
0 Bids
150 €
closed
MB SAF 300 Welder
Sesto Calende
0 Bids
150 €
17/01/2019 11:12
Opportunity
ANTONIO DÍAZ Burning Machine with Blowtorches
Villacañas
0 Bids
120 €
18/12/2018 13:12
Welded Edge Former
Welded Edge Former
Kölleda
0 Bids
100 €
closed
Lote de Manómetros
Lote de Manómetros
Polinyá
0 Bids
75 €
closed
Lot of Manometers
Lot of Manometers
Polinyá
0 Bids
75 €
closed
Lot of Manometers
Lot of Manometers
Polinyá
0 Bids
75 €
closed
Welding Machine
Welding Machine
Bassano del Gr…
0 Bids
60 €
closed
MESSER GRIESHEIM ELTRAM 310 Welding Transformer
Duderstadt
0 Bids
60 €
closed
Opportunity
Welding Machine
Welding Machine
Villacañas
0 Bids
50 €
18/12/2018 13:08
  

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Used welding machines for sale at Surplex.com

Index

  1. What are welding machines used for?
  2. How does a welding machine operate?
  3. Different types of welding machines
  4. The use of welding machinery in a variety of processes
  5. Where to find a quality second-hand welding machine?
Used mobile welding machine

What are welding machines used for?

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.

How does a welding machine operate?

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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Different types of welding machines

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 use of welding machinery in a variety of processes

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.

Used welding in a warehouse

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).

Where to find a quality second-hand welding machine?

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.

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