Task Force Tips is a manufacturer of firefighting equipment in the U.S. The reliability of the equipment is crucial, especially in applications in which the equipment is not frequently used. In any case, corrosion is not allowed. The model studied in this article is the ball intake valve, commonly used on fire engines to control the flow of water into the pump. The valve’s lightweight, aluminum design has proven ideal for use on mobile equipment. The valve consists of three metals, and a patented waterway system drains off the water in the assembly after operation to minimize the corrosion risk. In practice, however, the ball intake valve can be connected to iron or brass couplings and can remain completely filled with salt water. Put it all together, and galvanic corrosion can become a problem.
Simulation Technology
The risk of galvanic corrosion is predicted by computer simulations. A finite element analysis method is employed to solve the fundamental electrochemical equations that govern the corrosion phenomena. The simulation software consists of the following components:- Pre-processor
- Generic and flexible CAD-import tool—Standard Tessellation Language (STL)-based
- Automatic, high-quality surface mesh
- Automated polarization curve selection
- Solver
- Robust and fast
- Supports multibody configurations and external current sources
- Post-processing
- Fully automated and configurable reporting
- Powerful visualization tool available throughout the organization