Identify efficient and sustainable corrosion proof methods to gain lasting customer satisfaction.
No matter how professional the welding job is done, any welding seam will have micro pinholes, allowing back side moisture penetration. Any hygroscopic filler such as standard polyester will not seal the surface, but allow this moisture to pass - into the paint film. Long term, this leads to corrosion and paint lifting.
The Epoxy Metal Filler replaces the traditional tin soldering process in terms of modern low temperature welding deformations and deep dent repairs on high strength steel, galvanised steel and aluminum substrates.
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Step-by-step process guide to treating weldings seams
Note: For aluminium substrates and workplaces, always use a pneumatic sanding tool such as Festool Automotive Systems LEX 3 150/7 and follow instructions of ATEX directive 94/9/EG for Zone 22 areas.
Note: This step is only necessary when using a new cartridge. When reusing a previously used cartridge, this is not necessary.
Tip for use: warming up the material & surface to ~30°C before material application will help to accelerate curing, particularly at cold ambient temperatures.
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Previous tin products (sticks) contain high amounts of lead and tin, today the application is no longer allowed due to environmental and health protection reasons enact to the Directives from the European Union guideline II 200/53/EG.
Use a Lead-free alternative product instead of the process with open flame and hot soldering with tin. 3M recommends using 3M™ FC Epoxy Metal Filler as an easy to use product combined with best corrosion protection properties. 3M also offers the 3M™ High Power Manual Gun for an easy extrusion of filler from the cartridge and a smooth application.
Polyester based materials does not meet industry performance criteria & technical expectations for the longer term quatlity guarantee for vehicle repairs.
Spot welds and/or beads are not 100% leak-proof / tight . Moisture and salt penetrates from the back side of the repair area, through the welds, causing corrosion & paint lifting issues. Polyester based fillers have hygroscopic properties, which means they absorb water. Hence OEM´s and the manufacturing industry recommend to use the 3M™ FC Epoxy Metal Filler, because its formulation has been specifically developed to support corrosion protection and inhibit water penetration.
Welding seam will have micro pinholes, which needs to be well covered to avoid back side moisture penetration.
First apply a “tight” coat of 3M™ FC Epoxy Metal Filler onto the welded area, in order to ensure that the material completely covers any pinholes. Additional layers of the product can be applied immediately onto the first layer in a "wet on wet" process, in order to build up the repair to the required level.
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