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Production single parts from sheet metal with usage technology deep drawing
Jurča, Jan ; Dvořák, Milan (referee) ; Žák, Ladislav (advisor)
JURČA Jan: The manufacturing of sheet metal part by deep draw technology. Thesis of Master´s Studies, the 5th Year of Study, the School-year 2008/2009, The Institute of Manufacturing Technology, Department of Machining, FSI VUT Brno.The thesis deals with the project of manufacturing the part of the car body – the fifth door by deep draw technology. The material is zinc-coated sheet metal HX220YD EN 10292. Mechanical properties and suitability of the material are evaluated by mechanical tests. The structure of the material is evaluated by metalography scratch pattern. The analysis of draw process and manufacturability of the part is made by calculations and AutoForm software. The production line, necessary machinery and construction solution of draw tool for the manufacturing the part are determined. Last section deals with economical evaluation of the production.
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Optimalization of parts bonded by hot crimping
Liškář, Ladislav ; Řiháček, Jan (referee) ; Lidmila, Zdeněk (advisor)
The thesis describes the procedure for verifying the conceptual ideas of the company. Design and production of prototypes, testing and evaluation, quantifying savings. Two variants of crimped bond were chosen. For each was length of shaft changed to three and four crimped grooves. These prototypes were tested in two static and one dynamic tests. Recommendation for company is continue with other phases of development for shaft with four grooves.
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Lubricants for forming technologies
Tollrian, Zdeněk ; Císařová, Michaela (referee) ; Šlais, Miroslav (advisor)
This thesis deals with the lubricants used in metal forming technology. Requirements for lubricant, grease and selection process of forming the necessary information to determine the desired properties of the lubricant. The thesis presents an overview of lubricants that are used in various forming processes, their distribution and use. In each chapter the types of lubricants that are used in engineering practice.
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Machining threading holes with cutting operation, pressing and shaping.
Rybář, Pavel ; Sedlák, Josef (referee) ; Kalivoda, Milan (advisor)
This project wrought in terms of bachelor studies program 2307 submits a proposal of technology of production internal thread in thin-walled components. Selection of technology is done on the basis of three basic methods evaluation – welding nuts, riveting nuts and thermal shaping. On the basis of literary studies the optimal application is proposed. There is reduced choice of tools and assembly equipment used only for one type of technology. The choice of fastening parts material is possible done in conformity with product material, thread strength according to whole construction or design engineer choice. For proper choice of technology there are technical data sheets of fastening parts and description of thread mechanical properties.
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Comprehensive Assessment of Energy Demand in Production of Granules for Renewable Resources Heating
STERNBERG, Jiří
The first part of the graduation thesis deals with renewable resources, utilization possibilities of biomass and plant phytomass. The most common sources from which phytomass is obtained, are also mentioned here. A great deal of attention is paid to selected energetic plants included into the experiment. It is Sorrel Rumex OK-2 (Rumex tianschanicus x Rumex patientia) and Poppy seed (Papaver Somniferum). Further there are summarized the processes necessary for separating and pressing of biomass into granules for direct combustion. Within the research, two-year experience of growing sorrel stand is described. On the basis of performed technological operations in the stand, energy demands of growing are calculated. The real usage of energy at the production of one tonne of granules is measured. When labour costs are taken into account I can say that the expenses for the production of one tonne of briquettes from biomass would be 4 592 CZK, which is a non-competitive sum.
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The processing of biomass for direct combustion
TOMÁŠEK, Petr
The aim of this work is to create an overview of the possibilities of using the biomass for energy purposes and to assess various treatment technologies of biomass for direct combustion. It was performed the consumption monitoring of pellets in a family house newly insulated and an assessment of the pellet boiler. As fuel for heating of the house were used white wood pellets made from clean wood and wood waste, without additives. For calculation the consumption of pellets and an assessment of the boiler were used data from the heating season 2011/2012. Finally, a comparison is made of pellets and other fuels for heating the object.
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Energy difficulty of pressing granules for heating from renewable resources.
STERNBERG, Jiří
In this bachelor thesis is solved energy consumption of granular pressing for heating from renewable sources. The first part summarizes general information about biomass and its use. Special attention is devoted to the production of briquettes from chopped sorrel, from poppy and sawdust. The second part is devoted to the consumption comparison of firewood and briquettes from biomass, measurements of hour press and crusher performance and actual results of measuring energy difficulty of briquette production. In conclusion, it is stated that the production of 100 kg briquettes (as described in the specific case) is evaluated by the item for consumed energy of 42.69 CZK.
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Yield and quality of hemp oil and its utiliation
SKŘIVÁNKOVÁ, Ilona
Hemp is a versatile plant. Nowadays it is used in almost all sectors of human activity. Cultivation of hemp brings new job positions, revitalizes agriculture and engineering industries as well as other sectors of the economy and allows to re-establish a relationship between man and nature ? thanks to the help of modern technology. The following literature review, whose task was to summarize and evaluate the potential for exploitation, production and subsequent processing of hemp seed oil shows that hemp seed oil is an excellent source for the body of the necessary essential fatty acids in optimal proportions, and is also rich in other important nutrients such as the phytosterols and tocopherols. The methods of obtaining oil from hemp seeds, pressing and extraction, were recorded as differences in the preparation of seeds, and in the direct extraction process. Both methods have their pros and cons. The cold-pressing was found to be low yield and extraction methods is the disadvantage of technology and resources. Production and distribution of cannabis products in the Czech Republic dealing with several companies, two of which are oil notified under Directive 98/34/EC. Growing cannabis seeds will for most businesses in the Republic of the growing issues of risk and economically and will therefore be limited to more southern areas to ensure high seed yields.
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Suggest and look into possibilities of making straw briquettes for energy use.
SLÁDEK, Karel
This thesis addresses the problem of making straw briquettes. The aim is to examine the possibility of making straw briquettes directly on the field from lines arising after the passing of the combine harvester, which would save the operation of harvesting and storing straw and thus transport intensity. The basis of this work is finding straw production in the Czech Republic and its possible potential to produce briquettes. The Czech Republic is able to use for energy purposes, an average of 1.6 million t / y of straw cereals and 900 000 t / y of rape straw. Low specific density cut straw complicated transport to incinerators or to stationary lines to produce other forms of fuel. Pressing the straw bales specific density improves, but costs associated with transport are still relatively high. Because of low specific density, straw often stored in open stacks. Not all the straw, which is not used directly in agriculture, is used for combustion. There are also other industrial uses for straw, as Ecopanels (construction), paper, various ornaments and tools (for example: baskets). Most important for the production of briquettes is the moisture content of input material, which may not exceed 15%. The basis for obtaining briquettes directly in the field is appropriate combination of forage harvester and briquetting press, for example self-propelled briquetting press Biotruck 2000 is constructed from the Claas Jaguar. Forage harvester transports straw to the briquetting press, during transport is straw dried because of the heat from powerful engine. To briquetting is used several types of presses that are described in this thesis. The best quality briquettes are formed on the principle of screw press. The last two parts of the thesis are dealing with proposal the technological line for production of briquettes from straw directly on the field. There are described here used machines, their cost, performance and energy efficiency in those parts of the thesis. In the proposed procedure is a dry indoor storage of briquettes.
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