TY  - CONF
AU  - Jovičić, Radomir
AU  - Balać, Martina
AU  - Markez, Jernej
AU  - Pavlović, Danijel
AU  - Jovičić, Katarina
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6059
AB  - The cooling time in the temperature range of 800 - 500° C (t8/5) has a major impact on the structures that are formed in the heat affected zone of steel welded joints. Data on the optimum cooling time t8/5 for a particular steels can be found in the literature. Besides the shape of welded joint, the thickness and physical characteristics of the welded steel, welding process and parameters, such as amperage, voltage, welding speed and the preheating temperature also have the impact on the size of the cooling time t8 / 5. During the calculation of the actual value of the cooling time t8/5, which is obtained during the welding of the particular joint, as a rule, the assumption is that the amperage, voltage and welding speed on each section of the joint are equal to the average for the whole joint and that the temperature of the edges of the groove along the entire length are equal to the preheating temperature or inter pass temperature. Measuring of amperage and voltage during welding of a multi-pass butt - welded joint at the high strength steel, using the MIG process are presented in this paper. Results of the measurement showed that the
values of the amperage may differ significantly in certain sections of the weld, the average amperage in one part of the weld may be significantly different from the average value of the amperage in the second part of the same weld, and that both may be different from the average value of amperage for the entire weld. The influence of the changes in welding amperage on the amount of heat input and the size of cooling time t8/5 was analysed using numerical methods. It was concluded that, at certain sections of some of the weld, cooling time t8/5 goes beyond the given values, although the average values of the cooling time t8 / 5 for these welds are within the given values.
PB  - Innovation Center of Faculty of Mechanical Engineering, Belgrade
C3  - International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2017
T1  - Changes of parameters during welding of certain weld and their impact on cooling time in temperature range of 800 - 500° c
SP  - 9
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6059
ER  - 

@conference{
author = "Jovičić, Radomir and Balać, Martina and Markez, Jernej and Pavlović, Danijel and Jovičić, Katarina",
year = "2017",
abstract = "The cooling time in the temperature range of 800 - 500° C (t8/5) has a major impact on the structures that are formed in the heat affected zone of steel welded joints. Data on the optimum cooling time t8/5 for a particular steels can be found in the literature. Besides the shape of welded joint, the thickness and physical characteristics of the welded steel, welding process and parameters, such as amperage, voltage, welding speed and the preheating temperature also have the impact on the size of the cooling time t8 / 5. During the calculation of the actual value of the cooling time t8/5, which is obtained during the welding of the particular joint, as a rule, the assumption is that the amperage, voltage and welding speed on each section of the joint are equal to the average for the whole joint and that the temperature of the edges of the groove along the entire length are equal to the preheating temperature or inter pass temperature. Measuring of amperage and voltage during welding of a multi-pass butt - welded joint at the high strength steel, using the MIG process are presented in this paper. Results of the measurement showed that the
values of the amperage may differ significantly in certain sections of the weld, the average amperage in one part of the weld may be significantly different from the average value of the amperage in the second part of the same weld, and that both may be different from the average value of amperage for the entire weld. The influence of the changes in welding amperage on the amount of heat input and the size of cooling time t8/5 was analysed using numerical methods. It was concluded that, at certain sections of some of the weld, cooling time t8/5 goes beyond the given values, although the average values of the cooling time t8 / 5 for these welds are within the given values.",
publisher = "Innovation Center of Faculty of Mechanical Engineering, Belgrade",
journal = "International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2017",
title = "Changes of parameters during welding of certain weld and their impact on cooling time in temperature range of 800 - 500° c",
pages = "9",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6059"
}

Jovičić, R., Balać, M., Markez, J., Pavlović, D.,& Jovičić, K.. (2017). Changes of parameters during welding of certain weld and their impact on cooling time in temperature range of 800 - 500° c. in International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2017
Innovation Center of Faculty of Mechanical Engineering, Belgrade., 9.
https://hdl.handle.net/21.15107/rcub_machinery_6059

Jovičić R, Balać M, Markez J, Pavlović D, Jovičić K. Changes of parameters during welding of certain weld and their impact on cooling time in temperature range of 800 - 500° c. in International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2017. 2017;:9.
https://hdl.handle.net/21.15107/rcub_machinery_6059 .

Jovičić, Radomir, Balać, Martina, Markez, Jernej, Pavlović, Danijel, Jovičić, Katarina, "Changes of parameters during welding of certain weld and their impact on cooling time in temperature range of 800 - 500° c" in International Conference of Experimental and Numerical Investigations and New Technologies – CNN TECH 2017 (2017):9,
https://hdl.handle.net/21.15107/rcub_machinery_6059 .