Mätning, kontroll och duglighet för en lackeringsprocess: En fallstudie på Swedwood Älmhult AB
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Corporations today are acting on a globalized market with tough competition; for these companies to survive and generate profit it is crucial to continuously improve their business which puts up requirements to successful manage quality issues. One way to improve ones business is to measure and control ones processes. In this way a business can reduce variation and lower the company’s total cost of poor quality.Companies that coats wood products with lacquer has difficulties to measure their processes and that is why it is of interest to investigate if vibrational spectroscopy (VS) is a useful technology to measure the thickness of paint layers. VS are an IR based technology that can differentiate between different paint layers by determining their chemical composition. The data collected through VS can be analyzed with statistical methods for a situation analysis from statistical process control (SPC) methodologies to determine a process capability.The purpose of this study is to conduct a situation analysis of a coating process and examine if vibrational spectroscopy can be used for the implementation of SPC in that process. To fulfill the purpose a case study has been conducted at Swedwood Älmhult AB. Swedwood is interested in using SPC and to investigate if VS is a useful technology for determining quality parameters in a lacquering process.The study shows that VS demands some prerequisites to be functional. These prerequisites are: The measured process need to be stable and resources need to be allocated to continuously calibrate the measurement equipment. Furthermore, the production process at Swedwood is not in statistical control which results in products not meeting the defined tolerances. One of the quality parameters, gloss, has a small variability but is not centered on its target value. This should be easy to adjust and would result in more products meeting the tolerance requirements. For the other quality parameters the tolerances have to be revised or general improvements to the production process need to be executed.
Place, publisher, year, edition, pages
2011. , 28 p.
Teknik, SPS, duglighet, Lean, vibrationsspektroskopi, NIR, styrdiagram, gauge R&R
IdentifiersURN: urn:nbn:se:ltu:diva-45080Local ID: 2d030992-054d-4a19-a76e-a4a909f3eec6OAI: oai:DiVA.org:ltu-45080DiVA: diva2:1018360
Subject / course
Student thesis, at least 30 credits
Industrial and Management Engineering, master's level
Validerat; 20110506 (anonymous)2016-10-042016-10-04Bibliographically approved