Welding Machines

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Welding Machines

115 used machines found

Welding: used machines, accessories & rotary tables

Top offers: Welding Machines

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KJELLBERG SA Welding Plant
Eupen
0 Bids
25,000 €
closed
ESAB LAD 1400 SAW-Welding Machine
Hamburg
0 Bids
8,500 €
closed
Opportunity
ADOLFI PSK-20T Welding Positioner
Bedizzole (BS)
0 Bids
5,700 €
24/10/2017 10:09
SAF super 8700 robot controler Welding Robot
Sens De Bretagne
0 Bids
4,000 €
closed
Opportunity
ADOLFI PSK-10T Welding Positioner
Bedizzole (BS)
0 Bids
3,900 €
24/10/2017 12:20
UVM 5 Welding Manipulator
Konskie
0 Bids
3,700 €
closed
ADOLFI HPT-300 Welding Positioner
Bedizzole (BS)
7 Bids
2,600 €
24/10/2017 17:14
KEMPER 80050 Central Welding Fume Extraction Unit
Lohne
9 Bids
2,500 €
02/11/2017 16:48
URBAN AKS 4210/2 Double Head Welding Machine
Weilheim Teck
0 Bids
2,000 €
08/11/2017 12:48
UVM 3 Welding Manipulator
Konskie
0 Bids
1,900 €
closed
Top lot
SCHLATTER SELECTA P 1 182 11 32 Spot and Projection Welding Machine
Etzgen
0 Bids
1,500 €
26/10/2017 13:05
UVM 2 Welding Manipulator
Konskie
0 Bids
1,450 €
closed
SUNARC AC 26-200 Spot Welding Machine
Konskie
0 Bids
1,300 €
closed
Opportunity
UWM UWM 3 Welding table
Velen
0 Bids
1,300 €
27/10/2017 10:33
UVM 1 Welding Manipulator
Konskie
0 Bids
1,260 €
closed
UVM 0,5 Welding Manipulator
Konskie
0 Bids
1,200 €
closed
KEMPPI PS3500+FU20+WU100 Welding Machine MIG/MAG
Konskie
0 Bids
1,100 €
closed
Opportunity
KEMPER 8320010 Welding fume extraction
Velen
0 Bids
1,000 €
27/10/2017 11:49
WMT Basic-Set 2 Welding table accessories, starter set
Velen
3 Bids
950 €
27/10/2017 11:46
KEMPPI RA450W+FU30 Welding Machine MIG/MAG
Konskie
0 Bids
900 €
closed
DALEX PMS 11-4 G 3 Spot and Projection Welding Machine
Etzgen
2 Bids
850 €
26/10/2017 13:07
EWM Saturn 250 MIG Welding machine MIG/MAG
Konskie
0 Bids
800 €
closed
Opportunity
DALEX SL 25-1 Spot welding machine
Rahden
0 Bids
800 €
27/10/2017 09:32
TEKA Filtoo welding fume extraction
Velen
2 Bids
685 €
27/10/2017 11:04
UWM UWM 0,5 Welding turntable
Velen
1 Bid
660 €
27/10/2017 11:14
WMT Basic-Set Welding table accessories, starter set
Velen
1 Bid
650 €
27/10/2017 11:40
RÖWAC RÖWIC GW 300 E III 2-Phases Welding Rectifier
Ebenweiler
0 Bids
550 €
14/11/2017 15:07
EUROMATE MFS Mobile Welding Fume Extraction
Etzgen
4 Bids
460 €
26/10/2017 13:06
Hot lot
ESAB WELDG3SI1 Lot of Welding Wire
Bedizzole (BS)
15 Bids
460 €
24/10/2017 16:11
ESAB WELDG3SI1 Lot of Welding Wire
Bedizzole (BS)
10 Bids
310 €
24/10/2017 16:13
ESAB WELDG3SI1 Lot of Welding Wire
Bedizzole (BS)
10 Bids
310 €
24/10/2017 16:14
ESAB WELDG3SI1 Lot of Welding Wire
Bedizzole (BS)
10 Bids
310 €
24/10/2017 16:15
ESAB WELDG3SI1 Lot of Welding Wire
Bedizzole (BS)
10 Bids
310 €
24/10/2017 16:16
ESAB WELDG3SI1 Lot of Welding Wire
Bedizzole (BS)
9 Bids
300 €
24/10/2017 16:12
MESSER GRIESHEIM HS 1 Spot Welding Machine
Lübbenau/Spree…
0 Bids
300 €
28/11/2017 12:57
KEMPER Welding Fume Extraction Arm
Lohne
0 Bids
250 €
02/11/2017 16:51
KEMPER Welding Fume Extraction Arm
Lohne
0 Bids
250 €
02/11/2017 16:52
HYPERTHERM Powermax 900 Plasma Cutting Machine
9 Bids
240 €
02/11/2017 10:49
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:39
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:40
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:41
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:42
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:43
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:44
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:45
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:46
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:47
ARTEC 14.576 MIG Wire Electrode (3 rolls)
Duisburg
0 Bids
220 €
10/11/2017 13:48
  

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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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