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INVERKAN VID VAL AV DRAGSKIVETYP & DRAGSKIVEVINKEL PÅ YT- OCH MATERIALEGENSKAPER AV ETT USKILJNINGSHÄRDBART ROSTFRITT STÅL
Örebro University, School of Science and Technology, Örebro University, Sweden.
2012 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
The influences of type of drawing die & approach angle on surface and material properties of a precipitation hardenable stainless steel (English)
Abstract [sv]

Detta projekt har haft till syfte att få en ökad förståelse för materialet och dess egenskaper vid dragning. Det har utförts sex olika försök, vilka har genomförts med två olika ingångsvinklar, 12° och 18°, hos sten, liten nibs samt stor nibs. Försöken har genomförts i produktion där prover har tagits ut för att sedan ha analyserats i labb. Resultat från dragprov, hårdhetsprofil, martensithalts- samt smörjmedelsmängdsmätning har studerats och lett fram till slutsatser.

Slutsatserna som dragits visar på att ytan på tråden dragen med ingångsvinkel 12° hade färre defekter än tråd som var dragen med 18°. Defekter som hittades på tråd dragen med stor nibs 18° bestod till stor del av tvärsprickor. Över lag såg resultaten liknande ut i samtliga tester för både 12° och 18°, dock var resultatet av tråd dragen med liten nibs 12° avvikande vid flera tester efter första draget.

Abstract [en]

This project has been designed to get a better understanding of the material and its properties in wire drawing. There have been six different experiments which were conducted with two different drawing angles of three different kinds of drawing dies; regular drawing die, smaller nib and bigger nib. The experiments have been through the beginning of the production where samples have been taken out and then be analyzed in the lab. Results from tensile tests, hardness profile, martensite- and lubrication quantity measurements has been studied and led to the conclusions.

The conclusion shows that the surface of the wire drawn with the drawing angle 12° had fewer defects than the wire drawn with 18°. Defects that were found on the wire drawn with the bigger nib 18° consisted largely of transverse cracks. Generally the results were similar in all tests for both 12° and 18°, however, the results was diverge on several tests for the smaller

nib 12° after the drawing die.

Place, publisher, year, edition, pages
2012.
Keyword [en]
Wire drawing, drawing dies
Keyword [sv]
Tråddragning, dragskivor
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-23627OAI: oai:DiVA.org:oru-23627DiVA: diva2:535847
Subject / course
Mechanical Engineering
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-08-15 Created: 2012-06-20 Last updated: 2012-08-15Bibliographically approved

Open Access in DiVA

fulltext(1950 kB)485 downloads
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File name FULLTEXT01.pdfFile size 1950 kBChecksum SHA-512
a9db3e80d664cdb455af396ec9d057275356a9ff4f74dfdd2eeabeb71b9fed7a83624a25fed052c8c5d2f2bbd5cf58ea754e8bed7aec0525c5689e786e33266f
Type fulltextMimetype application/pdf

By organisation
School of Science and Technology, Örebro University, Sweden
Mechanical Engineering

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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