National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Optimalization of properties of moulding sands in water core of cylinder heads
Hlavsa, Petr ; Malec, Silvestr (referee) ; Rusín, Karel (advisor)
Submitted thesis deals with the change of existing binding system for the Hot–Box method for hardening serving for manufacturing of shell cores the water space of cylinder heads comprise of. Objectives for proposing new binding system for Warm–Box method of hardening under heat are to achieve reduction in creation of condensates and gas substances in binding material compared with existing binding system. Further the thesis is aimed at achieving optimal operating hardness the cores have by reduced batches of binding system and by reduced temperatures of cores in scope reflecting manufacturing conditions in the company Nemak Slovakia s.r.o. While resolving issues there were used methods for evaluating quality of opening materials, core mixtures and cores, further methods for evaluating quality of melt, casts and basic methods for statistical processing of results.
Search in field of core shooter machines
Klíma, Jiří ; Pavlík, Jan (referee) ; Bradáč, František (advisor)
This thesis deals with construction and technology of core shooter machines. Thesis contains basic characteristics of machines and overview of world manufacturers. The machines are compared in terms of arrangement and used equipment. For completeness, there is focus on single core production technology, preparation of raw materials and manufacturing automation. In conclusion there is assessment of the current situation and view on future developments in this area.

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