The Benefits of Automotive Hydroforming for Exhaust Systems

The reason for the shift is that the benefits of high-internal-pressure hydroforming die are, well, manifold.

Far fewer welds: Hydroforming allows for the creation of long, complex shapes that simply can’t be made using other processes. Older methods involved welding many independent sections together. In an exhaust system, a reduced number of welds cuts down resistance and improves air-flow efficiency.

Fewer process steps: Many parts of an exhaust chain can be consolidated into a single seamless hydroformed assembly, often with as little as 20 seconds production time from loading blank material to removing finished part.

Unparalleled precision: Computer controls precisely manage in-feeding of material while it is under high internal pressure — from 25,000 to 30,000 psi — allowing for precision tolerances of within 10 thousandths of an inch.

Less waste: Repeatable processing virtually eliminates waste in the form of dented or improperly bent parts, and consolidation of sections into a single unit requires less material.

Weight reduction: Hydroforming produces requisite stiffness using thinner walls than those made possible by traditional processes.

Complex shapes: Pre-bent tubes can be hydroformed to create complex shapes, even with inline inlet and outlet openings.

Lower tooling costs: With fewer sections and with burring and punching eliminated from the process, tooling requirements can be drastically reduced.

If you also pay attention for automotive hydroforming, please contact us via young@shinlone.com.cn.