We've recently seen flaking and deterioration on the surface of unplated mechanical tubing used inside a muffler. Upstream of the tube is a catalyst element so temperatures are quite high. High temperature alone does not seem to be all of the cause since this is a rather recent problem. About the time that the flaking problem started it had been noted that there was also a problem with carbon build-up at the exhaust port of particular test engines. We're cureous if there is any relationship here between the excessive carbon, temperature, and exposure of the mild steel. For example: is surface hardness affected?
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a partâ€™s function at the center of their design considerations. Download Now
Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so itâ€™s critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Download Now
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now