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Project of grouping for brass bearing separators production
Křížek, Stanislav ; Heinl, Zdeněk (referee) ; Rumíšek, Pavel (advisor)
This diploma thesis deals with a project to centralize the production of brass cage bearings in the company ZKL Hanušovice, a.s. The first part is focused on the description of the current production process, which has many disadvatages. From the analysis of these disadvantages we can make suggestions for making the production process more effective. The second part of the thesis focuses on these suggestions for the cetralized production proccess. The best of these suggestions has been elaborated into a technological project including capacity calculation and technical drawings. The final part of the thesis provils a technical-economic evaluation of the project, focusing mainly on the efficiency of investment in new production equipment and its impact on company management.
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New materials in welding technology
Křížek, Stanislav ; Janík, Martin (referee) ; Daněk, Ladislav (advisor)
The bechelor work elaborated in frame of studies branch B2339 deals with weldability of new kinds of steel especially about high-strength steel. This is a literary pursuit that includes problems with weldability, that means standing heat deformation cycle on defect activity in welding connection.
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Influence of white and yellow flower rape on incidence of natural enemies of pests
Křížek, Stanislav ; Kazda, Jan (advisor) ; Daniel, Daniel (referee)
The insect society living in oilseed rape is large. Change of the crop characteristics affects both harmful species and beneficious ones. The latter group consists of a lot of members of order Hymenoptera. This work focuses on the evaluation of impact of white oilseed rape cultivation on the insect society in comparison with two yellow winter varieties. Newly bred winter oilseed rape line variety Witt was compared to two hybrid varieties of yellow rape; Sherpa and DK Sensei. The experiment was carried out in 2015 and its plots were placed at Ruzyně at Crop Reserach Institute (VÚRV, v. v. i.) and also at the Experimental Unit of Czech University of Life Sciences (ČZU) in Uhříněves. The insects were collected by sweeping net, soil larvae traps and soil emergence traps. The occurrence of serious pests (pollen beetle Brassicogethes aeneus, brassica pod midge Dasineura brassicae, cabbage seed weevil Ceutorhynchus obstrictus, stem flea beetle Psylliodes chrysocephalus and cabbage flea beetles Phyllotreta sp.) was recorded. Dominant parasitoid species were Tersilochus heterocerus, Platygaster subuliformis, Trichomalus perfectus, Mesopolobus morys and Omphale clypealis. The level of pest mortality was evaluated. Numbers of species identified by key were processed using generalized linear model method in R statistical software. The results confirm suitability of the assessed varieties in the white oilseed rape cultivation system, notably in the combination of Sherpa and Witt. They give an insight into parasitoid community of oilseed rape in Czech republic, which is useful for management of serious pest species.
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Project of grouping for brass bearing separators production
Křížek, Stanislav ; Heinl, Zdeněk (referee) ; Rumíšek, Pavel (advisor)
This diploma thesis deals with a project to centralize the production of brass cage bearings in the company ZKL Hanušovice, a.s. The first part is focused on the description of the current production process, which has many disadvatages. From the analysis of these disadvantages we can make suggestions for making the production process more effective. The second part of the thesis focuses on these suggestions for the cetralized production proccess. The best of these suggestions has been elaborated into a technological project including capacity calculation and technical drawings. The final part of the thesis provils a technical-economic evaluation of the project, focusing mainly on the efficiency of investment in new production equipment and its impact on company management.
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New materials in welding technology
Křížek, Stanislav ; Janík, Martin (referee) ; Daněk, Ladislav (advisor)
The bechelor work elaborated in frame of studies branch B2339 deals with weldability of new kinds of steel especially about high-strength steel. This is a literary pursuit that includes problems with weldability, that means standing heat deformation cycle on defect activity in welding connection.
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