|
|
Modern cutting cemented carbide tools
Štefek, Jaromír ; Kalivoda, Milan (referee) ; Píška, Miroslav (advisor)
This thesis deals with modern cutting cemented carbide tools. In the first section are stated several basic innovations already used tools for basic machining operations, which is turning, milling and drilling. It continues with analysis of single materials for production of cemented carbides, non coated as well as coated and with comparing of their properties. There are listed the basic cutting properties of the cutting tools after that. The penultimate point of the work is optimization of the basic machining operations, namely roughing and finishing, for a given application, which is in this case turning on the lamp stand. Finally, everything is summed up and evaluated in the conclusion.
|
|
| |
|
| |
|
|
Reflex Treatment of Transparent Materials
Meluzín, Ondřej ; Tulka, Jaromír (referee) ; Molliková, Eva (advisor)
This thesis deals with the possibilities and methods of coating of transparent materials in order to improve their optical-reflective properties. It describes various methods that nowadays coatings can be applied on an industrial scale, while maintaining a constant thickness and properties across the applied coating. Further provides specific examples of how the application of different optical coatings can improve the desired properties of materials used for technical applications.
|
|
|
Materials Used for Cutting Tools for Metal Machining
Tomek, Lukáš ; Fiala, Zdeněk (referee) ; Kalivoda, Milan (advisor)
This thesis deals with cutting materials used for the production of inserts and tools for ma-chining. The aim of this thesis is to describe the various materials used in machining, their basic characteristics, composition and production. The work also includes a description of profiles of leading world producers of cutting tools. On the example of the designed shaft is made application of turning tools needed for its machining and short description of its production with a graphic demonstration. The final part is devoted to the evaluation of the turning in terms of used resources depending on the cost,productiontime and subsequent recycling of end-of-life instruments.
|
|
|
Tools Made from Cemented Carbide
Opršál, Ladislav ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
The thesis focuses on cutting tools made of both coated and uncoated cemented carbides. The first part of the thesis deals with the division of materials used for the production of the tools. The second part of the thesis introduces uncoated cemented carbides, special attention being paid to the labelling, production and properties of such compounds. The third part of the thesis presents coating deposition techniques and examines the properties of coating layers. Coating layers are produced using two different methods – CVD and PVD. The last part of the thesis compares the properties of the cutting tools (e.g. their cutting values) produced by the companies Pramet Tools, Sandvik – Coromant and Seco Tools.
|
|
|
The technology of hot-dip galvanizing
Pometlo, Stanislav ; Osička, Karel (referee) ; Mouralová, Kateřina (advisor)
This thesis deals with the technology of hot-dip galvanizing. At the beginning of this work views into the history of hot-dip galvanizing and analysis of known technologies about applying of melted zinc into the surface of material. It further describes modification for surface before application of zinc´s coating. In the next part of the work are summarized the most common corrosions of hot-dip galvanized material. The work follows up the difficultness of operation for hot-dip galvanizing device. At the end of work describes cooperation with Alka Holding s. r. o.
|
|
|
Influence of pyrrolidone derivates on alkyd and polyurethane coatings.
Klímová, Edita ; Molliková, Eva (referee) ; Tulka, Jaromír (advisor)
The aim of this thesis was to append data on chemical resistance of coatings made of paints based on alkyd and polyurethane resins. In the theoretical part, relevant information on coatings, preparation of their systems, theory of solubilization and properties of solvents were collected and organized. Three N-derivates of pyrrolidone were chosen for the practical part. Their influence on particular alkyd and polyurethane coatings was studied with emphasis on time course of coatings degradation.
|
|
|
High Speed Steels Cutting Tools and their Applications Today
Nosek, Jan ; Dvořák, Jaromír (referee) ; Sliwková, Petra (advisor)
My bachelor’s thesis “High speed steels cutting tools and their applications today” is about a chemical concept, a heat processing, a cutting property and a production of cutting tools of high speed steel materials. This work consist a possibility of an increase performance, a resist of high temperatures and a durability of high speed steel tools by means of PVD films and an accessible technologies. Next I must found producers of cutting tools and their production of high speed steels.
|
|
|
Coated cemented carbides
Foltýn, Michal ; Sedlák, Josef (referee) ; Humár, Anton (advisor)
This bachelor’s thesis is focused on coated cemented carbides, methods for coatings and properties of coatings. In the first part of this thesis there is mentioned basic subdivision of tool’s materials, including description of properties and possibilities of their use. Another part of this thesis is focused on the coating deposition methods. As each method there is noticed the description, advantages and disadvantages. In next part there are described processes which precede own deposition process and their influence on properties of coatings. In this thesis are also described properties of coatings and methods for their testing. The last part of thesis is focused on the offer of certain producers of coated cemented carbides. Several materials are chosen from each producer and there are mentioned descriptions of their properties, structure of coatings and possibilities of using.
|
guest ::
