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## Critical manufacturing operations in processing aluminum semi-finished products for superplastic forming

### Hubert Modzelewski

#### Abstract

The B.Sc. thesis is dealing with SPD technology for manufacturing of short rod-type elements made from aluminum alloy with an ultra-fine grained structure. These rod elements should be semi-finished products for further manufacturing processes of thin sheets for superplastic forming. The main goal of thesis is to carryout a selected part of manufacturing process for experimental assessment of its technological feasibility and perform the detail description of parameters and results. The particular object of this thesis are critical manufacturing operations of SPD processing. The first part of the thesis presents a general outline for main stages of SPD processing. The list of operations usually performed in the SPD technology was presented and critically reviewed. A new way of making the billets for the main angular pressing operation was described and a batch of billets has been prepared for experimental verification. The second part of the thesis is mainly a report of the work done. It contains a detailed description of the course of sequentially performed equal channel angular pressing (mtECAP), an operation with increased efficiency which was developed at WUT in Faculty of Production Engineering. Nevertheless, it has to be repeated several times (passes of mtECAP) according to the plan of common SPD processing. The plan for aluminium alloy assumes a six passes. Settings for utilized workstations, machines and tools, control and monitoring equipment are presented. The collected experimental data along with detailed results obtained from critical manufacturing operations of the SPD processing were described and critically analysed. Drawings and diagrams showing changes in the parameters of the operations carried out were shown for better presentation of results. Utilizing the gathered SPD processing data a number of conclusions were drawn and recommendations were proposed. The prototype bath of short cuboidal bars made of aluminum alloy EN AW-5754 has been manufactured and delivered in two experimental series with a number of 19 and 30 pieces for further investigation of an ultra-fine grained structure and further postprocessing towards superplastic forming. The cross-sectional dimensions of the square bars were 8×8 mm2 and the length was about 40 mm.
Diploma type
Engineer's / Bachelor of Science
Diploma type
Engineer's thesis
Author
Hubert Modzelewski (FPE) Hubert Modzelewski,, Faculty of Production Engineering (FPE)
Title in Polish
Operacje główne w procesie wytwarzania aluminiowych półwyrobów o cechach nadplastycznych
Supervisor
Lech Olejnik (FPE/IoMP) Lech Olejnik,, The Institute of Manufacturing Processes (FPE/IoMP)Faculty of Production Engineering (FPE)
Certifying unit
Faculty of Production Engineering (FPE)
Affiliation unit
The Institute of Manufacturing Processes (FPE/IoMP)
Study subject / specialization
, Mechanika i Budowa Maszyn
Language
(pl) Polish
Status
Finished
Defense Date
26-02-2019
Issue date (year)
2019
Reviewers
Cezary Jasiński (FPE/IoMP) Cezary Jasiński,, The Institute of Manufacturing Processes (FPE/IoMP)Faculty of Production Engineering (FPE) Lech Olejnik (FPE/IoMP) Lech Olejnik,, The Institute of Manufacturing Processes (FPE/IoMP)Faculty of Production Engineering (FPE)
Keywords in Polish
techniki wytwarzania, proces technologiczny SPD, operacja ECAP, przeciskanie przez kanał kątowy, metal UFG, stop aluminium 5754
Keywords in English
manufacturing of engineering components, operation, SPD processing, ECAP, Equal Channel Angular Pressing, UFG metal bars, aluminum alloy 5754
Abstract in Polish
File
• File: 1
DYPLinz-przeciskanie-8-Modzelewski-29print.pdf
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Local fields
Identyfikator pracy APD: 31871

Uniform Resource Identifier
https://repo.pw.edu.pl/info/bachelor/WUT9b577d1b514440b898d47a91870fe54c/
URN
urn:pw-repo:WUT9b577d1b514440b898d47a91870fe54c

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