Using solar energy is clearly an important part of creating a sustainable future. Thats exactly what the small company Absolicon Solar Collectors placed in Härnösand thinks and carries through. By developing and manufacturing concentrated solarcollectors with a complete runningcentral for producing steam intended for industrial purpose are they pushing the technology and industry forward. They have so far manufactured small volumes of pilot plants but will now have the ability to manufacture larger volumes. To accomplish that they will have to be able to speed up the manufacturing process regarding some of the processes in the manufacturing line. As a part of the first station in the line will they need a method to semi automatically bend the two longest edges of the collector. It is this method this thesis is all about. A functional prototyp is also a part of the desired result. Roll forming became the method of choice. After choosing method was a small research around the subject accomplished containing visits at companies and literature studying. The demands of the curvature of the bends were also more closely investigated to get a better grip of the demands on the roll forming mill. Rollforming is an effective way to change the profile of steel plates and strips. The higher rollspeed the faster rollforming. By calculating tension and elongation of the steel or by testing can the number of passes and the length of the mill be determined. In the part theory of the report is essential theory and rules regarding roll forming compiled for simple calculations and general understanding of some of aspects in roll and mill design. In the part method of the report is the work regarding planning and contructing the two hand made prototypes. Prototype one is manufactured for the purpose of testing stands, shafts and rolls. Derived from the results of testing prototype one is the final prototype constructed and made. The work is resulting in a final prototype containing two passes which is not producing the desired final bend angle but the function of the roll forming as a method can still be validated and presented. The steel strip is easily by hand dragged trough the mill and no defects or other problem were encountered. The final prototype is not fully meeting the demands of the final bend angle due to the short deadline it was made in. Two more passes are still needed do be added for the final angle. As a conclusion is roll forming as a method really suitable for this bending operation because of its simplicity, low cost, small physicall measurments and high forming speed.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:umu-135173 |
| Date | January 2016 |
| Creators | Manoraj Pettersson, Daniel |
| Publisher | Umeå universitet, Institutionen för tillämpad fysik och elektronik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | MA ; 1625 |
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