National Repository of Grey Literature 94 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Production of HTHT32 / 40 GI Double Elbow
Kříbala, Milan ; Kandus, Bohumil (referee) ; Žák, Ladislav (advisor)
The diploma thesis deals with the design of an injection mold for manufacturing double elbow, which finds its use in the siphon assembly. The part will be made of polypropylene with the trade name Tatren HT 25 11. The production batch size is set at 100,000 units in 3 months. Firstly, the analysis of the part is done including a detailed specification of its function and criteria that must be met by the component. Furthermore, a suitable technology for the production of the part is chosen. The theory of injection molding and mold design is made on the basis of the chosen injection technology. Subsequently, in the practical part is made a complete design of injection mold including technological calculations and simulations. An injection molding machine is chosen for the proposed injection mold. The conclusion of the thesis consists of technical - economic evaluation of the production of double elbow.
Production of part Fixing washer
Para, Marcel ; Kandus, Bohumil (referee) ; Žák, Ladislav (advisor)
Order was given for the prodiction of 20 000 pieces of fixing washers. In this case was chosen injection moulding technology. Based on the research, a structural design of the mold was prepared together with the drawing documentation. From the range of materials, it was chosen polypropilene MOSTEN GB218, which is suitable for the given produstion. The simulation verified the reliability and quality of production. The parameters of injection moulding were determined by calculations, and the machine J180ADS – 180U was selected base of them. In the economic evaluation, the total costs for the production of the entire series were established on Nc=19626,43€.
Thermoelectric device for measuring temperature
Melničuk, Petr ; Kandus, Bohumil (referee) ; Podaný, Kamil (advisor)
This thesis presents the application of thermocouples for measuring temperature. Thermocouples are a kind of contact thermometers, thus requiring direct contact with measured substance. Their advantages include great flexibility due to wide choice of material combinations, which makes it possible to achieve various operating temperature ranges, anywhere from -200 to 1800 . Improper choice of thermocouple may result in added systematic error or even render it unusable. Based on literary research, individual configurations, methods of measuring liquids, gases, and solids and their practical applications were presented. Lastly, an experiment was conducted, where three different type 'K' thermocouples were compared and deviations between their measurements were assessed.
Production of crusher on the plastic waste
Květoun, Jan ; Kandus, Bohumil (referee) ; Žák, Ladislav (advisor)
This thesis is focused on designing and manufacturing a shredder for plastic waste 2H for small companies, households and blocks of flats. Thesis contains brief description of plastics, their properties and usage in praxis. It deals with excessive production of plastic, noncircular economy of waste and unsatisfactory processing of plastic waste. There are examples of collecting, sorting and recycling technologies and their application in praxis. It consists of current overview of shredders available on Czech and Slovak market and their comparison. Practical part of this thesis focuses on design itself, its components, parameters and economic issues of manufacturing. Annex contains 3D model of shredder assembly, bought components overview, assembly drawings and photo documentation of created shredder.
Dependence of flow properties of plastics on water content and technological parameters
Ohnút, Lukáš ; Šilhavý, Miroslav (referee) ; Kandus, Bohumil (advisor)
Bachelor thesis was focused on detection the effect of moisture on the injection process. Two commonly used materials polyamide (PA66) and polybutylene terephthalate (PBT) were selected in the first step. The polymers were characterized to moisture analysis to determine the moisture content depending on time and temperature of drying. The experiment was carried out on a provisional injection mold due to non-possession of the mold cavity in the shape of Archimedes spiral. Weight of samples and injection pressure were observed in dependence to the percentage of moisture content in granulate
Development of Competitiveness of Company
Hradil, Martin ; Kandus, Bohumil (referee) ; Zich, Robert (advisor)
The diploma thesis is focused on developing the competitiveness of the company using proposals within the marketing mix. The business of the company is the production of photo calendars. The first part of the thesis is focused on theoretical background, which is followed by an analytical part, containing analysis of general and field environment and other analyzes that lead to the evaluation of the company. The last part includes suggestions for changes in the marketing mix, which will lead to the fulfillment of the goal of the work.
Investigation of storage conditions influence on adhesion of rubber bushings
Kvapil, Štěpán ; Muroň, Aleš (referee) ; Kandus, Bohumil (advisor)
The theoretical part of the thesis is focused on research on vulcanization and post-vulcanization, i.e. the production of rubber and the connection of rubber with metal using the latest technologies. This part serves as the theoretical basis for the development of the training base and the experimental part, which are part of the practical part. The training materials are serving for faster and more effective training of new staff and as a comprehensive set of information to the MAT center. The methodology of the manual is described in the main thesis and identical examples from this document are inserted in this thesis too. The experimental part focuses on the adhesion of rubber to the metal surface with subsequent evaluation. The whole problem from the preparation, post-vulcanization, tearing, through measurement to determination of the maximal storage life of sprayed rubber bearings is described.
Technical viscous curve for injection molding
Hejkalová, Anna ; Svoboda, Jan (referee) ; Kandus, Bohumil (advisor)
Injection molding is highly dependent on flow qualities of plastics. The bachelor thesis compares the conventional measurement of their rheological attributes with the method of injection molding to the technical viscous curve. This method enables to determine the optimum injection rate at which injection resistance does not allow significant improvement of the melt’s flow attributes, on the contrary increases the energy consumption of the process. At the same time, the thesis tries to prove the advantage of this method.
Plastics Processing Technology
Kubíček, František ; Kandus, Bohumil (referee) ; Žák, Ladislav (advisor)
This work is a literary research focused on plastics processing technologies with emphasis on injection moulding technology. From this field it is focused on materials suitable for injection moulding, moulding machines and parts of it, injection moulding process, defects emerging because of wrong optimalization of injection moulding process and special techniques of injec-tion moulding.
Pall Ring Manufacturing
Wajda, Jakub ; Kandus, Bohumil (referee) ; Žák, Ladislav (advisor)
The project elaborated design of injection mould with a cold runner system for a creation of component type Pall ring made of polypropylene. Pursuant to of the literary pursuit a problem, the injection technology has been selected as the most suitable method of manufacturing. The proportions of the component along with the placement of the parting line determined the creation process of shaped cavity. The quantity of a manufacturing batch specified two-cavity as the most advantageous variant. The calculation of vent channel’s measurements, the choice of befitting injection machine and a basic simulations had been conducted. The economic part of the thesis has confirmed the suitability of usage cold runner system instead of hot runner system.

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