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Vidareutveckling av plasmabrännare
2011 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This bachelor thesis was performed at Duroc Engineering AB in Luleå. Duroc Engineering is the leading company in Sweden of laser surface treatments and delivers service and products to mainly mining, steel, aerospace and engineering industries. Grate wagons transport pellets to the sinter plant in Malmberget at LKAB. Since the wagons pass several different heat zones, the pellets are sintered and the wagons are emptied and then new pellets are collected. This process progresses day and night, all the year around, which leads to severe wear on the wheels of the grate wagons. Surface treatment with a wear resistant coating is a way to reduce the wear of the wheels and thereby increase the service life. The purpose of this thesis was to improve and reconstruct the plasma torch used at the coating of the wheels of the grate wagons. The ambition was to generate a proposal for improvements of the plasma torch that should result in working drawings, which will be the basis for manufacturing of the torch. The project has been executed using a systematic developing method. A project plan was established, interviews and studies of the production were performed. A pre-study was carried out where complementing knowledge was obtained. Through the pre-study, sufficient information was collected and a requirement specification could be set up, followed by a generation of concepts and subsequent choice of concept. The final concept was then constructed in the CAD program Siemens UGS NX7.5, where also the manufacturing drawings were created. The work resulted in a plasma torch with simple mounting and demounting and logical connections between the different parts. The torch consists of several standard components, and spare parts can then be held in stock for in house reparation and no special tools are needed.

Place, publisher, year, edition, pages
2011. , 38 p.
Keyword [en]
Keyword [sv]
URN: urn:nbn:se:ltu:diva-50771Local ID: 7ffbbe75-765b-4fd6-81b7-975c668171eeOAI: diva2:1024133
Subject / course
Student thesis, at least 15 credits
Educational program
Industrial Design Engineering, bachelor's level
Validerat; 20110320 (anonymous)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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Hortlund, Per

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