29 AUGUST 2011Steelguru
Metallurgical Arc joining of steel and aluminium to make hybrid sheets
Edited by : AL CIRCLE
1 min read
An impressive innovation has shifted the limits of welding still further: Whereas steel and aluminium were once thought to be incapable of thermal joining, this is now perfectly feasible in actual practice. The revolutionary solution has made the visions of material experts, design engineers and production engineers come true.
Not to mention the long-held wish of automobile industry managers for dependable high load thermal joins between solid steel and lightweight aluminium as required by the loading sequence in the component. This is particularly advantageous for the automobile industry faced as it is with the need to reduce vehicle weight and to meet the EU emissions limit of 130 gram per kilometres CO2 by 2012. In other sectors too ranging from designer objects to factory roofs to wind power installations lightweight constructions also deliver huge benefits.
On the aluminium side there is a welded join while the steel sheet exhibits a brazed join. Fronius and voestalpine have been granted several patents for this solution. Together, they have developed high formability hybrid sheets. Used as semi-finished products, these can be formed into profiles or crash absorbers in processes such as folding, rolling and deep-drawing.
Not to mention the long-held wish of automobile industry managers for dependable high load thermal joins between solid steel and lightweight aluminium as required by the loading sequence in the component. This is particularly advantageous for the automobile industry faced as it is with the need to reduce vehicle weight and to meet the EU emissions limit of 130 gram per kilometres CO2 by 2012. In other sectors too ranging from designer objects to factory roofs to wind power installations lightweight constructions also deliver huge benefits.
On the aluminium side there is a welded join while the steel sheet exhibits a brazed join. Fronius and voestalpine have been granted several patents for this solution. Together, they have developed high formability hybrid sheets. Used as semi-finished products, these can be formed into profiles or crash absorbers in processes such as folding, rolling and deep-drawing.
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