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Hotwater boiler for natural gas,60 MW, 1,6 MPa, 150/70°C
Gardavský, Jan ; Baláš, Marek (referee) ; Lisý, Martin (advisor)
The aim of this thesis is design a hotwater boiler for burning natural gas with an output of 60 MW. Boiler works with temperature difference 150 °C / 70 °C. For a given fuel is calculated stoichiometric calculation. The following is the calculation of the heat balance of the boiler including the determinativ of thermal efficiency. The fuel used, the required parameters of hot water and feed water temperature are designed individual convective surfaces and dimensions of the boiler. The boiler design includes drawings.
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Procedural parameters at Inconel 625 cladding
Hrádek, Jan ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
The research is focused on cladding of inconel 625 using the MAG - CMT method. It was found that welding without an oscillation does not create the necessary geometry to establish additional layers. When welding with an oscillation, it was researched that the current between 150 and 200 A appears most appropriate in the synergistic mode for welding inconel 625. The resulting weld bead was made at a current of 190 A with pulse dynamics correction set to -4 and correction of arc length to +10 and welding speed of 315 mm per minute.The weld bead was not ideal mainly due to insufficient height. The improvement of results could be achieved by set oscilation with fluent change in acceleration. Because of the time options and difficulty of programming it was used only constant speed for all experiments.
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Verification of heat treatment on properties of progresive heat resisting steels
Volf, Ondřej ; Kubíček, Jaroslav (referee) ; Daněk, Ladislav (advisor)
The topic of this thesis is pre-welding process specification for heat reisisting T24 steel with TIG method. This is concerned welding waterwalls during construction electrical steam boilers. The main advantage T24 steel, except high heat resistance, is T24 doesn´t need to pre-heating neither post-welding heat treatment. Two tubes from T24 steel was flash welding and evaluating weld metal with several tests in this experiment. ALSTOM Power, s.r.o is submitter of this project.
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Design of oscillating head for surface welding of Inconel 625
Franc, Tadeáš ; Slaný, Martin (referee) ; Zouhar, Jan (advisor)
This diploma thesis deals with the structural design and production of a oscillating head for surface welding of a protective layer of Inconel® 625 superalloy on membrane walls. The design is preceded by a research for possible variants of the solution. Of the two designs, one was successfully manufactured and assembled, and incentives for future improvements were set. For easy optimization and testing of the device, an oscillating motion program was created in the LinMoT Talk 6.9 software. The production costs for the manufactured equipment were then calculated and the recommended selling price was determined, based on a general calculation formula. The result of the project is a functional device, a proposal for its control and a technical - economic evaluation of the production process.
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Analysis of Inconel 625 weld layer produced by MIG-CMT
Chrást, Daniel ; Slováček, Marek (referee) ; Kubíček, Jaroslav (advisor)
Návary z materiálu Inconel 625 na základní materiál 16Mo3 slouží v energetickém průmyslu u spaloven odpadu pro zvýšení životnosti membránových stěn. Návarové housenky jsou vytvořeny pomocí metody MIG-CMT. Byly provedeny analýzy makrostruktury a mikrostruktury za použití SEM mikroskopu Apreo 2, dále byla provedena analýza chemické složení návarové housenky za použití OES spektrometru ISpark. Nakonec byly provedeny analýzy vybraných mechanických vlastností, konkrétně mikrotvrdost a tažnost.
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Design of oscillating head for surface welding of Inconel 625
Franc, Tadeáš ; Slaný, Martin (referee) ; Zouhar, Jan (advisor)
This diploma thesis deals with the structural design and production of a oscillating head for surface welding of a protective layer of Inconel® 625 superalloy on membrane walls. The design is preceded by a research for possible variants of the solution. Of the two designs, one was successfully manufactured and assembled, and incentives for future improvements were set. For easy optimization and testing of the device, an oscillating motion program was created in the LinMoT Talk 6.9 software. The production costs for the manufactured equipment were then calculated and the recommended selling price was determined, based on a general calculation formula. The result of the project is a functional device, a proposal for its control and a technical - economic evaluation of the production process.
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Procedural parameters at Inconel 625 cladding
Hrádek, Jan ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
The research is focused on cladding of inconel 625 using the MAG - CMT method. It was found that welding without an oscillation does not create the necessary geometry to establish additional layers. When welding with an oscillation, it was researched that the current between 150 and 200 A appears most appropriate in the synergistic mode for welding inconel 625. The resulting weld bead was made at a current of 190 A with pulse dynamics correction set to -4 and correction of arc length to +10 and welding speed of 315 mm per minute.The weld bead was not ideal mainly due to insufficient height. The improvement of results could be achieved by set oscilation with fluent change in acceleration. Because of the time options and difficulty of programming it was used only constant speed for all experiments.
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|
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Hotwater boiler for natural gas,60 MW, 1,6 MPa, 150/70°C
Gardavský, Jan ; Baláš, Marek (referee) ; Lisý, Martin (advisor)
The aim of this thesis is design a hotwater boiler for burning natural gas with an output of 60 MW. Boiler works with temperature difference 150 °C / 70 °C. For a given fuel is calculated stoichiometric calculation. The following is the calculation of the heat balance of the boiler including the determinativ of thermal efficiency. The fuel used, the required parameters of hot water and feed water temperature are designed individual convective surfaces and dimensions of the boiler. The boiler design includes drawings.
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Verification of heat treatment on properties of progresive heat resisting steels
Volf, Ondřej ; Kubíček, Jaroslav (referee) ; Daněk, Ladislav (advisor)
The topic of this thesis is pre-welding process specification for heat reisisting T24 steel with TIG method. This is concerned welding waterwalls during construction electrical steam boilers. The main advantage T24 steel, except high heat resistance, is T24 doesn´t need to pre-heating neither post-welding heat treatment. Two tubes from T24 steel was flash welding and evaluating weld metal with several tests in this experiment. ALSTOM Power, s.r.o is submitter of this project.
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