The welding process creates silicate deposits on weld seams and forms an oxide layer in the Heat-Affected-Zone (HAZ) of a weld. Coatings do no not adhere well to these deposits, and corrosion results. This organization would like to find ways to remove the deposits (or not create them), or a way to coat them successfully.
Silicate islands form during the welding process and cause corrosion to form in these local areas, which impacts the performance of the welded joint over time by causing corrosion.
Coating processes such as e-coat do not adhere to these silicate islands.
The welding process also forms an oxide layer on the metals being joined. Coating processes such as e-coat do not adhere effectively in these areas, either.
The proposed process should be capable of removing, or reducing the production of, these silicate formations and oxide layers both in exposed weld beads as well as weld beads in non-accessible closed sections.
Alternatively, a coating process that can adhere to the silicates or oxide layer and prevent corrosion would also be of interest.
- Process cannot damage the weld bead.
- Cannot itself cause coating issues.
Possible solution areas:
- Novel welding technology
- Cleaning methods
- Methods to prevent silicates and oxides from forming during welding Anti-corrosion process that can adhere to silicates and oxides
Successfully, quickly, and inexpensively remove silicate islands and oxide layer, or reduce, or not create them. Successfully coat them with an anti-corrosion coating.
Previously Attempted Solutions:
Shot blasting, which is an expensive process and cannot reach enclosed weld beads. The organization is not currently interested in laser cleaning methods.
Desired Timeframe: Within 12 months
Annual Revenue: More Than $500 Million
Company Type: Commercial (Publicly Held)
Field of Use and Intended Application: Industrial welds.
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