Welding Machines

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Welding Machines

140 used machines found

Welding: used machines, accessories & rotary tables

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UWM UWM 5 Welding Manipulator
Konskie
0 Bids
3,690 €
11/03/2019 15:32
SCHLATTER GP 2.242.22.22. Projection Welding Machine
Zofingen
0 Bids
900 €
12/03/2019 14:07
SCHLATTER P 1.232.11.32 Spot Welder
Zofingen
0 Bids
900 €
12/03/2019 14:08
SCHLATTER GP 2.242.22.22. Projection Welding Machine
Zofingen
0 Bids
900 €
12/03/2019 14:06
SONICTECH ECO-20 Ultrasonic Welding Machine
Prudnik
0 Bids
800 €
05/03/2019 11:37
SONICTECH ECO-20 Ultrasonic Welding Machine
Prudnik
1 Bid
800 €
05/03/2019 11:36
SONICTECH Ultrasonic Welding Machine
Prudnik
0 Bids
700 €
05/03/2019 11:31
SUNARC AC-26 200 Spot Welding Machine
Konskie
0 Bids
690 €
11/03/2019 14:49
SONOTRONIC ECO-20 Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 11:27
SONOTRONIC ECO STG 150 Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 10:58
SONOTRONIC Ultrasonic Welding Machine with Feeder
Prudnik
0 Bids
500 €
05/03/2019 10:51
SONOTRONIC ECO-20 Ultrasonic Welding Machine
SONOTRONIC ECO-20 Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 11:35
SONOTRONIC ECO 20 Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 10:56
SONOTRONIC ECO-35 Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 11:41
SONOTRONIC ECO-20 Ultrasonic Welding Machine
SONOTRONIC ECO-20 Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 11:28
BRANSON M-102 H Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 10:52
BRANSON 2000 IW PLUS Ultrasonic Welding Machine
Prudnik
2 Bids
550 €
05/03/2019 10:50
BRANSON 8400 Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 11:47
SONOTRONIC Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 11:30
SONOTRONIC ECO 35 Ultrasonic Welding Machine
Prudnik
0 Bids
500 €
05/03/2019 10:53
SONOTRONIC ECO-20 Ultrasonic Welding Machine
SONOTRONIC ECO-20 Ultrasonic Welding Machine
Prudnik
0 Bids
350 €
05/03/2019 11:32
SONOTRONIC ECO-20 Ultrasonic Welding Machine
SONOTRONIC ECO-20 Ultrasonic Welding Machine
Prudnik
0 Bids
350 €
05/03/2019 11:33
FORWARD TECHNOLOGY Ultrasonic Welding Machine
Prudnik
0 Bids
300 €
05/03/2019 10:57
HITEMA ECA.001-180 Water cooler
Sant Vicenç de…
1 Bid
250 €
07/03/2019 11:21
CEA TRI-ARC 354 Welding Machine
Venafro (IS)
0 Bids
200 €
05/03/2019 14:45
Hot lot
TEKA CAREMASTER WAND Welding fumes aspirator
Sant Vicenç de…
14 Bids
460 €
07/03/2019 12:13
KEMPPI PSS 5000 Welding Machine
Polinyá
5 Bids
280 €
21/02/2019 11:31
OERLIKON GLE 260 Welding Rectifier
Zofingen
0 Bids
175 €
12/03/2019 14:13
OERLIKON GL 320 RE Welding Transformer
Zofingen
0 Bids
175 €
12/03/2019 14:22
Opportunity
Welding Masks
Welding Masks
Zona Industria…
0 Bids
170 €
28/02/2019 14:57
Opportunity
Welding Masks
Welding Masks
Zona Industria…
0 Bids
170 €
28/02/2019 11:09
ARCMAKER SC 130 Welding Machine
Medolago (BG)
0 Bids
150 €
14/03/2019 11:58
CEBORA MIG STAR 450 S Welding Machine
Medolago (BG)
0 Bids
150 €
14/03/2019 11:59
SCHLATTER 3238-4 Spot Welder
Zofingen
0 Bids
150 €
12/03/2019 14:10
AGUILA P-6-P Spot welding
Sant Vicenç de…
1 Bid
150 €
07/03/2019 11:22
Opportunity
Lot of Manometers
Lot of Manometers
Polinyá
0 Bids
120 €
21/02/2019 12:18
MÄDER DLP 450 HV 60 E-ZH Welding Machine
MÄDER DLP 450 HV 60 E-ZH Welding Machine
Prudnik
0 Bids
110 €
05/03/2019 11:08
MÄDER DLP 450 HV 60 E-ZH Welding Machine
MÄDER DLP 450 HV 60 E-ZH Welding Machine
Prudnik
0 Bids
110 €
05/03/2019 11:07
AGUILA P-4-P Spot welding
Sant Vicenç de…
0 Bids
100 €
07/03/2019 11:25
Hot lot
GALAGAR GALA 2000 GE PULSE Continuous wire welding
Sant Vicenç de…
12 Bids
220 €
07/03/2019 11:20
SERRA TE-1 Spot welding
Sant Vicenç de…
1 Bid
100 €
07/03/2019 11:23
ESAB fume collector Fume / welding collector 2 Pieces
3 Bids
120 €
07/03/2019 09:18
MÄDER DLP 450 HV 60 E-ZH Welding Machine
Prudnik
0 Bids
100 €
05/03/2019 11:06
AGUILA P-4-P Spot welding
Sant Vicenç de…
0 Bids
100 €
07/03/2019 11:24
MAXWELD 200 TIG PULSE Continuous wire welding
Sant Vicenç de…
2 Bids
110 €
07/03/2019 11:17
ESAB CARRYVAC P 150 Welding Extraction System
Zofingen
2 Bids
110 €
12/03/2019 14:23
Hot lot
ESAB fume collector Fume / welding collector 3 Pieces
12 Bids
220 €
07/03/2019 09:17
MÄDER DLP 450 HV 60 E-ZH Welding Machine
MÄDER DLP 450 HV 60 E-ZH Welding Machine
Prudnik
0 Bids
90 €
05/03/2019 11:15
  

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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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