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New Methods to Prevent Weld Seam Corrosion

Request Number N076169
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Description

Silicate/oxide at weld toe, in weld notchWhile welding using Gas Metal Arc Welding (Mig Welding), an oxide layer and silicate islands form along the seam in exposed weld beads as well as on weld beads in non-accessible closed sections. IncWell's partner is looking for a new method to prevent the oxide layer and silicates from corroding the weld seam over time. The proposed process, material, or coating should be capable of removing or reducing production of the silicate formations or allowing a coating to fully adhere to their surfaces.

 

 

Background

Currently, the industry makes use of several processes to prevent weld seam corrosion: shot blasting visible welds followed by waxing welds in cavities; e-coating; or coating the weld seam with zinc-rich paint. These proven solutions require significant capital expenditure. During the process, the part must be handled multiple times and undergo secondary operations beyond the industry standard e-coating of the structure. Additionaly, e-coating and similar processes face challenges in adhering to surfaces in the areas of interest.

 

Key Success Criteria

Solutions of interest will:

  • Be lower cost than the conventional methods: cavity wax plus shot blasting, zinc-rich paints, or e-coat
  • Remove silicates and oxides or allow adhesion of a coating to them
  • Be at least at a TRL of 6

 

Possible Approaches

IncWell's partner would consider novel solutions, as well as approaches that make use of the following:

  • Improved mechanical removal of silicate and oxides, such as by wire brush
  • Novel weld wires
  • Shielding gases to reduce formation of silicates

 

Approaches not of interest

Approaches not of Interest at this time include:

  • Shot blasting
  • Waxing of the cavities or back side of the weld
  • Zinc-rich paints

 

Preferred Collaboration types
  • Joint Development
  • Consulting
  • Supply Agreement
Items to be submitted

When responding to this request, please be sure to provide a non-confidential description of the technology or process you propose along with information regarding your alignment with the Key Success Criteria as well as your desired business relationship with IncWell's partner.

 

Point of Contact
Jonathan Jakischa
Area of Interest
  • Chemical Manufacturing
  • Paint & Coatings
  • Manufacturing & Fabrication
  • Bonding & Joining
  • Metal Fabrication
  • Original Equipment Manufacturers
  • Materials Processing
  • Metals & Ores
Organization
IncWell
Due Date
January 15, 2018
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