| 摘要 |
Previous methods for producing a profile section with varying wall thicknesses such as extrusion moulding, extrusion drawing or rolling are expensive and do not meet modern requirements in terms of dimensional accuracy. The objective of the invention is to provide a low-cost method for the production of profile sections with varying wall thicknesses, while guaranteeing dimensional accuracy. Strips are used as a starting material. Said strips are continuously fed into a welding installation and welded to each other on a longitudinal edge before being formed in a forming device. This enables profile sections with varying wall thicknesses to be produced at low cost and in a quick manner by using strips with the appropriate wall thicknesses. By simply changing the strips it is possible to produce different profile sections with low set-up times. The dimensional accuracy provided by the method is primarily directed towards the dimensional accuracy of strips that are used as a starting material. The inventive method is particularly suitable for strips that are made of aluminium, for instance, or steel with a wall thickness of up to 30 mm. |
