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Forging of the "lock-bolt"
Frýdl, Pavel ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
To lock-bolt manufacturing was selected technology of die forging. Lock-bolt is made of 11375 steel in a series of 2700 pieces per year. With the use of literary studies and practical knowledge has been developed technological process fittings. It includes the draft instrument stainless steel 19663 including drawings. Forging is performed on a hydraulic-pneumatic hammer KJH 2 with a nominal value of 20 kJ impact work. Blanks are cut from bars 30 mm 6 m long to bars 52.2 mm long. The techno-economic evaluation shows that the price of a forging is 4,71 CZK and for production will be need 24 pieces of bars.
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Increasing the life of cutting blades by coating
Vodák, Marek ; Lidmila, Zdeněk (referee) ; Podaný, Kamil (advisor)
This Bachelor Thesis presents the possibility of increasing lifespan of cutting blades made of 19 436 steel, which are used for the production of stator sheets made of silicon steel. Its high amount significantly increases the hardness of the material, which adversely affects the lifespan of the tool blade. After selecting suitable methods, coating was chosen. Its use is limited by the resistance of the material to tempering with a maximum temperature of 520 °C. Therefore, it is necessary to choose a PVD method, more specifically arc evaporation, which runs at temperature below 500 °C. From a range of suitable coating the multi-layer FeinAl coating, which has excellent properties thanks to chemical composition and structure composed from many fine layers, was selected.
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Piston rod eye production
Hořava, David ; Jopek, Miroslav (referee) ; Lidmila, Zdeněk (advisor)
The bachelor's project elaborated design of technology production of the piston rod eye in series of 45 000 pieces. The piston rod eye is made of steel rod C45E by die forging. Pursuant to of the literary pursuit and necessary technological calculations was chosen a pneumatic – hydraulic hammer KHZ 4A, from the company called Šmeral, with a forming energy of 50 kJ, for forging of component. Cross wedge rolling machine was chosen for overdosage of forged piece in form of double piece. Shearing press LKOA 200, from the company called Šmeral, with a forming force of 2 000 kN, was chosen for shearing of forged piece. At the end, the technical – economic evaluation of material costs was calculated.
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Design of wheel hub production
Zahálka, Tomáš ; Lidmila, Zdeněk (referee) ; Podaný, Kamil (advisor)
The subject of this thesis was to propose a possible way of production for a wheel hub on the front axle of VAZ 2101 made out of steel 12 050. Based on the accesible technologies was selected a volume thermoforming technology, specifically drop forging for its positive impact on mechanical features of forging. Construction of the die cnforms to the norm ČSN 22 8308 with closed spout groove. The forging is done by a hammer KHZ 8A, with an impact energy of 80 kJ. Dies, upper and lower, made of tool steel 19 552, tempered to 54 HRC.
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Production of splined sleeve
Vališ, Ondřej ; Lidmila, Zdeněk (referee) ; Císařová, Michaela (advisor)
The master’s thesis submits a technological project of production of splined sleeve used in automotive as a component of propeller shaft. The part is made of steel ČSN 11 523 by bulk forming technology in an annual production series of 20 000 pieces. Production process was designed in four operations, after the second operation there was recrystallization annealing included for regeneration of plasticity before following extrusion. There were made technological calculations for these production operations. Operations were projected to be done by common one-operation press machines available in local manufacturing facility. For all the operations were designed functional tools and tools setups. In conclusion, there was performed technical-economic evaluation. As emerged from this evaluation the final amount of total production costs for one piece is 131,- Kč. When 9 393 pieces are produced, the production series reaches to the break-even point and then the profit starts to be generated.
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Materials for Production of Small Firearms
Neužil, Tomáš ; Lidmila, Zdeněk (referee) ; Molliková, Eva (advisor)
The aim of this thesis is to summarize information of small firearms, both in terms of their historical development and the origins of the crafting firearms, through the development of locks and a history of the weapons, which were during this development invented, to the emergence of a single bullet, which is still used today, so from the perspective of our time focusing on the choice of barrel materials, the issue of loading and fatigue barrel and bore when fired and conventional production technologies barrel bore.
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Forging oblong forgings
Příkaský, Jakub ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
The project deals with the design of the production of a rod-shaped component using a die swage. The material is steel 12 060. Based on a literature study on forging and calculations, the forging, the technological process and the hammer die were designed. Based on the calculated work required, the power hammer KHZ 2 was designed. Technical and economic evaluation was performed.
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Production of the valve seat
Kraval, Jiří ; Lidmila, Zdeněk (referee) ; Žák, Ladislav (advisor)
This project developed within the bachelor studies of B-STG submits a proposal of a production technology of saddle valve made of EN AW – ALMG3 material. Based on a literary study of the problem of cutting, drawing and calculations manufacturing of the component in a production die was suggested. The production die uses a normalised component and is tightened on LEN 63C eccentric press (produced by ŠMERAL Trnava), with nominal drawbar pull 630 kN. The conclusion of the thesis deals with the economic benefit of the suggested manufacturing technology.
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Manufacturing of the steam attemperator protective liner
Kukla, Petr ; Lidmila, Zdeněk (referee) ; Peterková, Eva (advisor)
The Bachelor´s thesis deals with the innovation of the manufacturing of the steam attemperator protective liner. The part will be made of low – alloy steel EN 10216-2 10CrMo9-10. The presented work contains an overview of possible production methods, where the technology of pipe end flaring with a fixed mandrel was chosen as the most suitable. The required material parameters were obtained by the tensile test. The application of the selected technology method was verified by analytical calculations and FEM simulation. According to the determined forming force (810 kN), an electro – hydraulic press OMCN 164 with nominal force 1000 kN was chosen. This machine is fully sufficient for the production of this component. The risk of occurring of a defects was excluded based on calculations and simulation. There was assessed considerable financial saving over 53 % in the technical and economic evaluation. In conclusion, this optimization of production is technically acceptable.
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Drop forging of gear wheel
Bednařík, Petr ; Lidmila, Zdeněk (referee) ; Štroner, Marek (advisor)
The project elaborated design of technology production of gear wheel from circular blanks of steel 12 050. Pursuant to of the literary pursuit a problem of the die forging and calculation was designed manufacturing process. Dies proposal will be based on relevant standards, materials die steel will be 19 552. Given the complexity of the shape and dimensions of the gear will be used in three operations. Based on the calculated forging force was chosen vertical forging sheet LMZ 1600 A/S with a nominal power of 16 MN. Due to the use of the press die is provided with an ejector.
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