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Hot dip galvanizing of highstrength steels
Baránek, Tomáš ; Žák, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
This master’s thesis deals with the properties of highstrength steels, mainly with their resistance to corrosion. It describes discusses different types of corrosion and the possibility of protecting materials against corrosion. The thesis also evaluates compares the cost of corrosion protection by using coating and hot dip galvanizing. It describes describes the principles of degreasing and pickling, which is used as an adjustment before hot dip galvanizing. It evaluates there are many procedures for hot dip galvanizing, such as wet, dry or spin method, which is used for small parts. This thesis also evaluates the change of mechanical properties of steels: Hardox 500, Weldox 700 and 500 Weldox after hot dip galvanizing.
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Forming of thin-walled tubes
Baránek, Tomáš ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
This work brings a synopsis of technologies used in the process of thin-walled tubes forming as well as their evaluation. There are various forming methods applied in order to achieve a required shape e.g. tube bending, radial tube tripping and tube forming. The bending is done by several means e.g. collaring, reeling and pressing. In the pipe bending operation the tube may get deformed. Thus there might occur the following bending defects e.g. wall thinning, excessive flattening, wrinkles in the bend, tube suspension. At the radial tube tripping may occur local tube tapering or tube diameter attenuation. Tube forming is dividend into inlet, outlet and flattening.
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Hot dip galvanizing of highstrength steels
Baránek, Tomáš ; Žák, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
This master’s thesis deals with the properties of highstrength steels, mainly with their resistance to corrosion. It describes discusses different types of corrosion and the possibility of protecting materials against corrosion. The thesis also evaluates compares the cost of corrosion protection by using coating and hot dip galvanizing. It describes describes the principles of degreasing and pickling, which is used as an adjustment before hot dip galvanizing. It evaluates there are many procedures for hot dip galvanizing, such as wet, dry or spin method, which is used for small parts. This thesis also evaluates the change of mechanical properties of steels: Hardox 500, Weldox 700 and 500 Weldox after hot dip galvanizing.
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Forming of thin-walled tubes
Baránek, Tomáš ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
This work brings a synopsis of technologies used in the process of thin-walled tubes forming as well as their evaluation. There are various forming methods applied in order to achieve a required shape e.g. tube bending, radial tube tripping and tube forming. The bending is done by several means e.g. collaring, reeling and pressing. In the pipe bending operation the tube may get deformed. Thus there might occur the following bending defects e.g. wall thinning, excessive flattening, wrinkles in the bend, tube suspension. At the radial tube tripping may occur local tube tapering or tube diameter attenuation. Tube forming is dividend into inlet, outlet and flattening.
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