Utveckling av blästeranläggning för bladfjädrar : till Trainparts SWeden AB i Bollnäs

Abrasive blasting is a large field and a process that has long existed in mechanical manufacturing. The unpredictable nature of the process makes its research in most cases not theoretically calculated. Instead experiments are used to verify various parameters in the design. In this work, no detailed experiments could be performed due. to time and resource constraints. Trainparts Sweden AB in Bollnäs reconditions and manufactures leaf springs for rail vehicles, and they want to investigate the introduction of abrasive blasting in their production line. The aim is to investigate what kind of abrasive blasting equipment that fit the company's production line. The goal is to develop a concept proposal on a abrasive blasting machine for own manufacturing or facilitating an investment of a market existing machine. To come up with a concept proposal a simple working model were developed and was followed during the work on the thesis. Market research on existing abrasive blasting machines and literature studies in the affected areas was conducted as the basis for the work. Thereafter a comparison with respect to cost, efficiency and application of the different parameters in the abrasive blasting process was made. The result of this work is a wheel blasting machine with four wheels; this is what gives the best results for the products. Our conclusion is that a wheel blasting machine is the best option from a manufacturing standpoint but because of high purchase price and low production volumes, it may be appropriate to look at other approaches