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Design of crane hook production
Horák, Tomáš ; Štroner, Marek (referee) ; Podaný, Kamil (advisor)
The thesis deals with the design of the production of a crane hook made of C45 steel. After evaluating suitable technologies, die forging on a mechanical press was chosen. Based on the analysis of technological technology, the shape of the part was modified and all necessary additions and limit deviations of forging dimensions were determined. The semi-finished product with a diameter of 65 mm and a length of 380 mm will be formed on a cross wedge rolling mill, bent on a separate press and subsequently forged. The crank forging press LZK 3150 B from the company ŠMERAL Brno a. S., With a nominal forming force of 31.5 MN, was chosen from the calculated forming force. The construction of the dies is based on the ČSN 22 8306 standard and they are made of 19,552 steel with subsequent heat treatment.
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Forging oblong forgings
Chudý, Jan ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
This bachelor´s thesis is focused on design of technological production procedure of front wheel-drive arm of agricultural machine. Material for construction of this part is unalloyed steel 12 060. Part of this thesis is literall study focused on forging. On basis of this study is designed required forged piece, which will be processed by swaging on hammer KHZ 4A. After swaging is needed removal of excess material in form of burr and stencil with trim pressing machine LKOA 200. Swadge is made of alloyed tool steel 19 662. Part of thesis is mechanical drawing documentation and technical-economical assessment.
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Drop forging of hub
Vostřel, Jan ; Novotný, Karel (referee) ; Štroner, Marek (advisor)
The project elaborated in a frame of Bachelor’s studies branch B 2307 presents a technology design of a forged piece – hub – a part of a gear box made by drop forging from 14 231.0 material. Drop forging in three operations was suggested on the basis of specialized studies on the subject of drop forging and calculations. Assumed series of 40 000 pieces a year, preciseness and automatization of production of the part, will be produced on the crank drawing inclinable press LMZ 2500 (producer Šmeral Brno, a.s.) with nominal tensile force 25 MN. Swages are made of alloyed instrumental steel 19 552.8, heat-worked according to drawing documentation. At the end of the project technical economic evaluation of the technology design is implemented.
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Die forging
Stračánek, Rostislav ; Šlais, Miroslav (referee) ; Lidmila, Zdeněk (advisor)
This diploma thesis is based on proposal of manufacturing technology forging of connection rod by die forging. The connection rod is made of 12 050 steel and it is part of crank mechanism in combustion engine. Production series was specified to 120 000 pcs. for year. Into technology procedure was implemented method of cross wedge rolling before die forging. The material for transverse cross wedge rolling was chosen 19 554 steel. Process of die forging was selected three operation in vertical forging press LZK 4000 with pressure force 40 MN made by company Šmeral Brno a.s. For die material was chosen 19 552 steel. And finally was carried out technical and economical evaluation of the forging production.
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Production of holder by solid forming
Špaček, Antonín ; Štroner, Marek (referee) ; Kopřiva, Miloslav (advisor)
The diploma thesis deals with suggestion of low alloy 14220.0, produced by solid forming. This suggestion is based on the size of series that contain 100 000 pieces a year. The essay contains knowledge refering to drop forging technology and comparison with existing technologies. Two suitable variants of production were assessed, these variants are drop forging with hammers and vertical forging press. Both theories were theoretically analised in order to describe given technology. The analysis also contains calculation and suitable machine choice. Drop filling on vertical forging presses was chosen because of forging type. Furthemore forging proposition was treated including production technique. The chosen variant contains calculation, suggestion of a die, machine that was used and suggestion of flash trimming. For suggested technology was chosen vertical press LZK 3150 B. Its producer is Šmeral a.s. Brno. This project also contains technical drawings of the given component, forge, dies and phase of forging.
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Production of holder by solid forming
Šimon, Miroslav ; Novotný, Karel (referee) ; Kopřiva, Miloslav (advisor)
The aim of this dissertation is to design an optimal technological processing of a given component by solid forming. This work includes a bibliographic study, which is the source of information for the solutions. Another important topic is the global technological processing of the given component: to begin with gear blank design until the final product. The best option seems to be the die forging on forging press in three steps. From an economical point of view, the die forging realized according to the designed technological processing appears to be the best solution.
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Forging gear
Šíma, Vojtěch ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
The project elaborated in a frame of Bachelor‘s studies branch B-STG presents a technology design of a forged piece – gear wheel by drop forging. The wheel is made form 12 050.0 material and is a part of an agriculture machine. Considering the series of 45 000 pieces per a year and the precision of production, the drop forging for three operations was selected for production. The wheel will be produced on the crank drawing inclinable press LKZ 1600 P from Šmeral Brno, a.s. producer with nominal tensile force 16 MN. Swages are made of alloyed instrumental steel 19 552.8. At the end of the project technical economic evaluation of production and comparison of the forging technology and machining technology was implemented.
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Forging production of Holder of steering pivot
Moudrý, Michal ; Kopřiva, Miloslav (referee) ; Novotný, Karel (advisor)
MOUDRÝ Michal: Forging production of holder of steering pivot The project was elaborated in frame of engineering studies branch 2307. The aim of the project was to propose design of technology production of steering pivot holder using solid forming of steel 12 040.0. Based on literary study on die forging and made calculations forging on a vertical crank press LMZ 1000 with nominal forging force of 10MN was designed (producer ŠMERAL Brno). Lower and upper ejectors are used for ejection of components. Induction furnace type SOP 250/6-A30 P/L/T will be used for heating of the raw material. Trimming will be performed using trimming press LDO 315 A/S with press force of 3,15 MN. Dies are made of instrumental steel 19 663.9, for their clamping die clamping device QLZK 1000/UC will be used. A part of this project is economic evaluation of the production and development of production drawings. Keywords: solid forming, die forging, steel forging, holder
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Analysis of forging disagreement
Novotný, Karel ; Hoza, Jiří (referee) ; Fiala, Alois (advisor)
This diploma thesis deals with the generation of the different drope stampings in industrial process in MBNS Kovárna Company. The main purpose of this thesis is analysis of the industrial process and finding the main factors influences on the process. It especially deals with forgings of the shafts and also flanges with the similar quality of material 42CrMo4. Reasons of the disagreements are focused on surface insensibilities of the forging - crack. First theoretic part introduces company, meaning of the quality of material and describes tools used for finding reasons of the generation of disagreements. In the second practical part is described the whole industrial process and determination of the reasons of disagreements. In concluding part the results are analyzed and some correctional recommendations are suggested.
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Forging of rotary forgings
Konvalina, Michal ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
The thesis is focused on manufacturing proposal of the conveyor chain sprocket using die forging from steel C45 (12 050). Based on the literature review of eligible technologies, volume termoforming technolology has been selected here, more accurately closed die forging on a vertical crank forging press with an open flash gutter. Dimensions of forging and die are designed according to appropriate valid standards. Based on calculated tensile force of 10,83 MN will be forging performed on vertical forging press LZK 1600 P/SH. Forging die will be made of low alloy tool steel 1.2713 (19 662) and ejection of forging will be executed by three ejector pins in lower and upper finishing die.
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