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Barrel forging
Moravec, Zdeněk ; Císařová, Michaela (referee) ; Lidmila, Zdeněk (advisor)
The thesis contains a description of basic specifics of small arms barrels. Further presents the overview of other production methods and describes the method of rotary swaging, its use in production of the small arms barrels and basic principles of forging machines. In the last chapter there is a general manufacturing process of general forged small arms barrel. The procedure includes a brief description of operations and a schematic images of selected operations.
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Mechanical and physical properties of magnesium alloys prepared by rotary swaging
Škraban, Tomáš ; Drozd, Zdeněk (advisor) ; Mathis, Kristián (referee)
in english For their positive influence on mechanical and physical properties of the material, methods of severe plastic deformation are popular for quite some time today. Rotary swaging is one of them. With its simplicity and productivity, it has the potential for industrial use. It is a radial swaging of rods or tubes, which results in decreasing of their diameter. Influence of this method is researched on extruded rods made of magnesium alloy AZ31. Experiments are made on five samples of different degree of swaging (different diameter). This allows to research gradual evolution of properties during the swaging. Results show significant positive influence on grain size (and microstructure in general) of originally extruded rod. During swaging there is an evolution of material texture and increase in strength.
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Mechanical and physical properties of magnesium alloys prepared by rotary swaging
Škraban, Tomáš ; Drozd, Zdeněk (advisor) ; Mathis, Kristián (referee)
in english For their positive influence on mechanical and physical properties of the material, methods of severe plastic deformation are popular for quite some time today. Rotary swaging is one of them. With its simplicity and productivity, it has the potential for industrial use. It is a radial swaging of rods or tubes, which results in decreasing of their diameter. Influence of this method is researched on extruded rods made of magnesium alloy AZ31. Experiments are made on five samples of different degree of swaging (different diameter). This allows to research gradual evolution of properties during the swaging. Results show significant positive influence on grain size (and microstructure in general) of originally extruded rod. During swaging there is an evolution of material texture and increase in strength.
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|
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Barrel forging
Moravec, Zdeněk ; Císařová, Michaela (referee) ; Lidmila, Zdeněk (advisor)
The thesis contains a description of basic specifics of small arms barrels. Further presents the overview of other production methods and describes the method of rotary swaging, its use in production of the small arms barrels and basic principles of forging machines. In the last chapter there is a general manufacturing process of general forged small arms barrel. The procedure includes a brief description of operations and a schematic images of selected operations.
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