National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Optimization of the injection process of a diesel engine dosing module component
Ohnút, Lukáš ; Podaný, Kamil (referee) ; Žák, Ladislav (advisor)
This diploma thesis deals with optimalization of the injection process of the part and its implementation into serial production. In the first step, the injection mold was tested and injection parameters were initially defined. In the next step, simulations were created in the CADMOULD program. These simulations calculated theoretical injection parameters and these were compared with the parameters set on the injection molding machines. Then, the shape measurement protocols were prepared, according to which the shapes in the cavities of the injection mold were optimized. Finally stress tests were performed, which detected problems in the injection process.
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

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