Welding Machines

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Welding Machines

40 used machines found
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URBAN AKS 1610-35/23 & SV 530 Welding and Cleaning Line
Nonantola
0 Bids
45,000 €
07/09/2017 14:29
DSI LASER AL 100 Laser Welding Device
Meßkirch Ringg…
2 Bids
15,400 €
12/09/2017 14:03
URBAN AKS1400& SV610 Welding and Cleaning Line
Nonantola
0 Bids
8,000 €
07/09/2017 14:30
SOENEN HENDRIK CR80/4-6000 4-Head Welding Unit (V-notch)
Nonantola
0 Bids
5,000 €
07/09/2017 14:28
Top lot
ESAB LCA 800 Submerged Arc Welding Unit
Wenden
0 Bids
3,400 €
24/08/2017 10:00
Welding Positioner
Medolago (BG)
0 Bids
2,000 €
20/09/2017 10:00
Opportunity
UWM UWM 3 Welding table
Velen
0 Bids
1,300 €
25/08/2017 11:31
Opportunity
DALEX PMS 14-4 Spot Welding Device
Wenden
0 Bids
990 €
24/08/2017 10:11
REHM 230 GW WIG Welding Device
Meßkirch Ringg…
0 Bids
900 €
12/09/2017 15:46
Opportunity
MESSER GRIESHEIM Eurotrans 50 Protective gas welding system
Velen
0 Bids
870 €
25/08/2017 11:56
CEBORA SPOT 2500 Welding Device
Meßkirch Ringg…
0 Bids
800 €
12/09/2017 14:29
UWM UWM 0,5 Welding turntable
Velen
1 Bid
660 €
25/08/2017 12:10
TEKA Filtoo welding fume extraction
Velen
1 Bid
635 €
25/08/2017 12:00
ARTEC TIG 305 i DC Welding Device
Meßkirch Ringg…
1 Bid
600 €
12/09/2017 14:22
ARTEC TIG 305 i DC Welding Device
Meßkirch Ringg…
1 Bid
600 €
12/09/2017 14:23
ARTEC TIG 305 i DC Welding Device
Meßkirch Ringg…
1 Bid
600 €
12/09/2017 14:24
WADKIN Welding Table
Velen
1 Bid
600 €
25/08/2017 12:16
BOSCH Electric spot welding machine
Münster
0 Bids
600 €
07/09/2017 11:37
Opportunity
PLYMOVENT EMK 1402 Mobile Welding Fume- and Dust Extraction Device
Dieburg
0 Bids
420 €
23/08/2017 13:24
APS APS 300 Welding Rotary Table
Meßkirch Ringg…
1 Bid
350 €
12/09/2017 14:36
Opportunity
KEMPER 91550 Welding Fume Extraction System
Velbert
0 Bids
320 €
23/08/2017 10:37
CASTOLIN GOOD AIR 1100 Welding Fume Extraction
Revnice
0 Bids
310 €
13/09/2017 12:20
ESS 130 GS WIG Welding Device
Meßkirch Ringg…
0 Bids
300 €
12/09/2017 15:45
OMICRON MSP 710 PVC-Pipe welder
Münster
0 Bids
300 €
07/09/2017 11:19
Hot lot
BLUEWELD MEGAMIG 380 Welding Machine
Pianezza (TO)
14 Bids
260 €
12/09/2017 11:49
ESAB LAG 400 Welding Rectifier
Wenden
2 Bids
220 €
24/08/2017 10:18
Opportunity
KÜPPERSBUSCH SPTU-50.2R Welding Electric Furnace
Wenden
0 Bids
200 €
24/08/2017 10:01
ESS 220 G Welding Machine
Zimmern
0 Bids
150 €
13/09/2017 12:11
ESS 2050 Welding Machine
Zimmern
0 Bids
150 €
13/09/2017 12:10
Extraction Station
Waghäusel
0 Bids
145 €
closed
Welding Table
Waghäusel
0 Bids
95 €
11/09/2017 10:08
PRIMAT Welder Locking Pliers 10 pcs.
Duisburg
0 Bids
55 €
Not started
PRIMAT Welder Locking Pliers 9 pcs.
Duisburg
0 Bids
55 €
Not started
Lot of Welding Partitions
Eisenerz
0 Bids
40 €
closed
Gas Trolley
Pianezza (TO)
0 Bids
20 €
12/09/2017 12:12
COMMERCY SOUDURE ROKCY 160 Welding station
Val deReuil
4 Bids
20 €
07/09/2017 15:34
DARMIX 1  Gas-heated welding gun &  Gas trolley
Val deReuil
0 Bids
20 €
07/09/2017 16:29
 

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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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