Sheet hydroforming is a process that uses liquid as the medium of energy transfer to form the workpiece. Hydroforming is applied more and more in industry because it results in a better strain state in the workpiece. A deeper draw can be achieved and the friction between tools and blanks is reduced.

The advantages of hydroforming include reduction in weight, increase in stiffness, no damage to the surface of the sheet, and the capability to form complex shapes.

1. Reduction in weight: If strength is not compromised, a reduction in weight is always advantageous in the automobile, airline, and other such industries. The reduction in weight can contribute to an increase in speed. In addition, in building any structure a reduction in weight is advantageous.

2. Increase in stiffness and rigidity: While we might want speed, we also want safety. With the stiffness and rigidity, safety is enhanced.

3. Complex shaped: With sheet hydroforming, many complex shapes can be created without the use of welds which could compromise safety. The use of stamps and hydraulics allows various shapes include concave and convex curves.

4. Good surface finish: We want the reduction in weight with safety. But we also want the aesthetics. This process produces quality surface finishes without the blemishes of welding.

Sheet hydroforming is useful in reducing weight and cost simultaneously by improving structural integrity, strength, and rigidity. Cost reduction includes the elimination or decrease of welds and welding operations. Additionally, production steps are reduced which contributes to the cost reduction.

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