We are running across a large scale problem with brown clumps accumulating on our fused silica rollers in our horizontal tempering furnace. We have cleaned out our SO2 manifold and even swapped tanks - any ideas on what else to try?
The brown clumps are accululating sparatically across the entire roller hearth in odd corkscrew patterns, with the largest accululation in the last zone. I have pictures for those interested in helping me solve this problem.
Side problem- Concurrently there I have another issue with excessive white line on the glass appearing in squiggling lines across the glass. Most of the white line is in the form of a powder that can be removed with a clean glove, but the short scratches leave behind a hazing effect on the surface.
Can this also be directly related to the SO2 problem?
Any help would be greatly aprreciated!