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Comparison of CMT TWIN with other MIG/MAG processes
Jiskra, Milan ; Felix, Michal (referee) ; Kubíček, Jaroslav (advisor)
The development of welding technology is constantly going forward mainly due to the reduction of production costs and the costs of additional straightening of weldments due to the welding distortion. Therefore, the leading producers of welding machine are coming with new methods and technologies. One of the innovations is also the tandem technology CMT Twin from the company Fronius. The experiment carried out in the diploma thesis confirmed that this is a very cost effective process. The CMT Twin is from the point of view of production costs of the weld cheaper variant and bring less heat into the material compared with conventional welding. Application equipment CMT Twin requires industrial robot, so the method is predestined for the series up to mass production. The CMT Twin finds application, for example in the automotive and shipbuilding industry.
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Storage life of new torch tip
Jiskra, Milan ; Bakeš, Martin (referee) ; Kubíček, Jaroslav (advisor)
Welding in a MIG/MAG protection atmosphere is the the most used and most widespread method for welding. This method is very extensively used. Its only limitation is in an outdoor environment while working in the field, when the effects of external influences (wind) can breach the gas containment. The containment prevents the access of air to the weld pool and a breach can lead to the formation of a poor quality welded joint with a lot of pores. An important part of the welding device is the contact tip, which energizes the welding wire by electric current. There are many types of contact tips from the cheapest to more expensive ones. The requirement is to increase the lifetime of tips to the maximum in order to minimize replacement times. An Australian company making MIGfast tips has tried to increase the lifetime by using a ceramic insulator. This tip producer claimed as much as five times longer lifetime than conventional tips. Tests carried out by us, however, showed a very negative result in comparison with commonly used conventional tips.
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Comparison of CMT TWIN with other MIG/MAG processes
Jiskra, Milan ; Felix, Michal (referee) ; Kubíček, Jaroslav (advisor)
The development of welding technology is constantly going forward mainly due to the reduction of production costs and the costs of additional straightening of weldments due to the welding distortion. Therefore, the leading producers of welding machine are coming with new methods and technologies. One of the innovations is also the tandem technology CMT Twin from the company Fronius. The experiment carried out in the diploma thesis confirmed that this is a very cost effective process. The CMT Twin is from the point of view of production costs of the weld cheaper variant and bring less heat into the material compared with conventional welding. Application equipment CMT Twin requires industrial robot, so the method is predestined for the series up to mass production. The CMT Twin finds application, for example in the automotive and shipbuilding industry.
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Storage life of new torch tip
Jiskra, Milan ; Bakeš, Martin (referee) ; Kubíček, Jaroslav (advisor)
Welding in a MIG/MAG protection atmosphere is the the most used and most widespread method for welding. This method is very extensively used. Its only limitation is in an outdoor environment while working in the field, when the effects of external influences (wind) can breach the gas containment. The containment prevents the access of air to the weld pool and a breach can lead to the formation of a poor quality welded joint with a lot of pores. An important part of the welding device is the contact tip, which energizes the welding wire by electric current. There are many types of contact tips from the cheapest to more expensive ones. The requirement is to increase the lifetime of tips to the maximum in order to minimize replacement times. An Australian company making MIGfast tips has tried to increase the lifetime by using a ceramic insulator. This tip producer claimed as much as five times longer lifetime than conventional tips. Tests carried out by us, however, showed a very negative result in comparison with commonly used conventional tips.
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