Welding Technology

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Welding: used machines, accessories & rotary tables

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Current bid Current bid Closing time Closing time Number of bids Number of bids Location Location Relevance Relevance Name Name

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Serbia, 32000 Čačak

ALFRED KOHLER Corner Welding Machine

27/05/24 10:01

Bids: 0

600 €

Serbia, 32000 Čačak

Welding Console

27/05/24 10:00

Bids: 0

450 €

Serbia, 32000 Čačak

OERLIKON PS 6,5 ER Spot Welding Machine

27/05/24 09:52

Bids: 0

450 €

Serbia, 21400 Bačka Palanka

RADE KONCAR 4B-2 Welding Device

27/05/24 09:06

Bids: 0

250 €

Spain, 46136 Museros

KUKA KR30L6-2 Welding Cell

16/05/24 10:36

Bids: 0

12,500 €

Czech Republic, 277 45 Úžice

FANUC Arc Mate 100iBE Arc Welding Robot

21/05/24 09:25

Bids: 1

2,650 €

Romania, 307370 Sacalaz, Timis

TECNA 4666N Press Type Spot Welder

21/05/24 09:42

Bids: 0

2,250 €

Italy, 81024 MADDALONI

SCHMIDT BITTNER TPMP5-WMA Spot welder

15/05/24 14:33

Bids: 0

1,500 €

Poland, 05-870 Błonie

BARTOM MS-300 Welding Positioner

21/05/24 10:22

Bids: 0

1,400 €

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Poland, 05-870 Błonie

BARTOM MS-300 Welding Positioner

21/05/24 10:23

Bids: 0

1,400 €

Poland, 05-870 Błonie

BARTOM MS-300 Welding Positioner

21/05/24 10:21

Bids: 0

1,400 €

Italy, 25011 Calcinato

CEBON MIG-400 PL Wire welding machine

27/05/24 15:44

Bids: 0

1,240 €

Italy, 25011 Calcinato

CEBON MIG-400 PL Wire welding machine

27/05/24 14:33

Bids: 0

1,240 €

EWM PICOMIG 305 D 3 PULS TKG welding machine with cooling unit

Germany, 52511 Geilenkirchen

EWM PICOMIG 305 D 3 PULS TKG welding machine with cooling unit

Closes in: 0d 12h

Bids: 0

1,200 €

Poland, 63-322 Gołuchów

ASPA ZGb-80 Welder

21/05/24 10:03

Bids: 0

1,000 €

ELMATECH MIDISPOT VISION AV Spot welder - Package of 5 pcs.

Germany, 52511 Geilenkirchen

ELMATECH MIDISPOT VISION AV Spot welder - Package of 5 pcs.

Closes in: 0d 8h

Bids: 2

1,100 €

Poland, 05-870 Błonie

BARTOM MS-150 Welding Positioner

21/05/24 10:18

Bids: 0

950 €

Poland, 05-870 Błonie

BARTOM MS-150 Welding Positioner

21/05/24 10:19

Bids: 0

950 €

Poland, 05-870 Błonie

BARTOM MS-150 Welding Positioner

21/05/24 10:20

Bids: 0

950 €

FRO Filcord 450 TS + TS 4R Welding device

Croatia, 40305 Pušćine

FRO Filcord 450 TS + TS 4R Welding device

16/05/24 09:20

Bids: 0

750 €

Italy, 25011 Calcinato

CEBON MIG-250 Wire Welding Machine

28/05/24 11:45

Bids: 0

490 €

Italy, 25011 Calcinato

CEBON MIG-250 Wire Welding Machine

28/05/24 11:39

Bids: 0

490 €

Italy, 25011 Calcinato

CEBON MIG-250 Wire Welding Machine

27/05/24 13:27

Bids: 0

490 €

Spain, 08784 Piera

SERRA Welding cell unit

29/05/24 10:32

Bids: 0

400 €

Spain, 08784 Piera

TECNA 3664P Spot Welding Device

29/05/24 10:26

Bids: 0

400 €

Spain, 08784 Piera

SERRA Spot Welding Device

29/05/24 10:24

Bids: 0

400 €

CEBORA BRAVO SYNERGIC MIG 3840/TS Welding Equipment

Spain, 08784 Piera

CEBORA BRAVO SYNERGIC MIG 3840/TS Welding Equipment

29/05/24 10:12

Bids: 0

400 €

Spain, 08784 Piera

TECNA 3664P Spot Weliding Device

29/05/24 10:10

Bids: 0

400 €

Spain, 08784 Piera

CEA Tigtronic 235 Welder

29/05/24 10:08

Bids: 0

400 €

Spain, 08784 Piera

SUNARC HC 300 Wire Welding Machine

29/05/24 10:06

Bids: 0

400 €

CEBORA BRAVO 155 Combi 494 Welding Machine

Spain, 08784 Piera

CEBORA BRAVO 155 Combi 494 Welding Machine

29/05/24 10:04

Bids: 0

400 €

Germany, 89250 Senden

IDEAL LBS045 Belt welding machine

05/06/24 14:22

Bids: 0

350 €

ELMATECH ELMA concept Vision spot welding machine

Germany, 33647 Bielefeld

ELMATECH ELMA concept Vision spot welding machine

22/05/24 14:09

Bids: 14

710 €

Spain, 08784 Piera

150W Electrode Welding device

29/05/24 10:28

Bids: 0

300 €

REHM SYNERGIC.PRO² MIG/MAG welding machine

Germany, 71384 Weinstadt

REHM SYNERGIC.PRO² MIG/MAG welding machine

28/05/24 12:00

Bids: 7

370 €

Germany, 02953 Bad Muskau

KEMPPI KEMPOMAT 3200 welding device

23/05/24 09:59

Bids: 16

480 €

Netherlands, 5047 TC Tilburg

CIFES Star 35P Spot Welding Machine

21/05/24 14:01

Bids: 0

200 €

Germany, 33647 Bielefeld

KUKA EWP500 spot welding machine

22/05/24 14:13

Bids: 1

190 €

Spain, 46470 Catarroja (Valencia)

SOLCAR GAR Three-phase Transformer

16/05/24 11:12

Bids: 0

150 €

Netherlands, 8102 HJ Raalte

ESAB LAH 315P MIG welder

28/05/24 15:33

Bids: 0

100 €

MESSER TRITON 160 DC TIG welding machine

Germany, 71384 Weinstadt

MESSER TRITON 160 DC TIG welding machine

28/05/24 12:04

Bids: 8

160 €

Netherlands, 8102 HJ Raalte

GEBERIT Media PE mirror welding machine

28/05/24 15:27

Bids: 0

80 €

ROTHENBERGER WWS ADF550 automatic welding shield

Germany, 71384 Weinstadt

ROTHENBERGER WWS ADF550 automatic welding shield

28/05/24 12:29

Bids: 0

75 €

Germany, 89250 Senden

Straightening table

05/06/24 14:28

Bids: 0

70 €

Germany, 78132 Hornberg-Niederwasser

PLYMOVENT EFO-3002/AL extraction unit

Closes in: 0d 15h

Bids: 1

70 €

Germany, 71384 Weinstadt

Soldering and welding set

28/05/24 13:18

Bids: 0

60 €

Germany, 78132 Hornberg-Niederwasser

EWM WEGA 400 MIG welding machine

Closes in: 0d 13h

Bids: 23

280 €

Germany, 89250 Senden

Autogenous welding device

05/06/24 14:40

Bids: 0

30 €

Germany, 73527 Schwäbisch Gmünd

WSME TIG-315PAC/DC welding machine

22/05/24 14:50

Bids: 2

35 €

Germany, 73527 Schwäbisch Gmünd

Autogenous welding machine

22/05/24 14:55

Bids: 0

20 €

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Overview

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

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.