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Finite element modeling of the shape rolling process
2003 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The goal of this work is to build a parametric model for Finite Element (FE) simulations of cold wire rolling. The model is built in the program Marc2003. Cold rolling is a manufacturing step when producing for example watch bracelets and windscreen wipers. The inlet material for the cold rolling is hot rolled to a diameter of 5.5 mm. Thereafter the wire is drawn to smaller dimensions. By cold rolling good surfaces and close tolerances can be achieved. The mechanical properties can also be controlled. Until now, when a new product is developed, tests are performed to determine the stick series that would give the desired mechanical properties. This is an expensive and time consuming way. By simulating instead it will be faster and less expensive. The model can also be used for simulations of possible reductions without roll breaks. Some data i.e. contact pressure and temperature distribution over the wire cross section cannot be measured. With the model they can be simulated. The model is used to examine the material flow dependence of friction and roll diameter. Hopefully results from the model will lead to changes in the processes at Sandvik. Parts of the report are confidential.

Place, publisher, year, edition, pages
2003.
Keyword [en]
Technology, FEM, rolling wire
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-47656ISRN: LTU-EX--03/139--SELocal ID: 52e9f501-5830-4124-8997-e70ece683bffOAI: oai:DiVA.org:ltu-47656DiVA: diva2:1020984
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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