"Engineered Surfaces for Exceptional Performance"
"Engineered Surfaces for Exceptional Performance"

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Lignite Mining Tools - Saint-Gobain Coating Solutions

Industry: Lignite Mining.

Principle of the Process: Extraction of the lignite, carrying of the lignite, transfer of the lignite.

Equipment Concerned: The application with TufCote® G-A 8mm ⌀ (even 6.35mm) products concerns mainly the extraction and treatment phases of the lignite (refer to pictures): Teeth of bucket, extraction conveyor, hopper, scrapper.

Service Conditions

  • Ambient temperature ~20°C to 50°C.
  • Abrasion and erosion lignite.
  • Risk of medium shocks.

Problem: Tools are subject to severe abrasion resulting from the minerals.

Coating Solution: Abrasion Resistant Coatings TufCote® Grade A 8mm ⌀: tungsten carbide with a metal matrix. 5 to 6mm thickness are required.

Benefits of the TufCote®: 

  • Lifetime is 6 to 7 times more than lifetime with special steels.
  • No capital investment is required to apply the TufCote® brazing flexible cord (only a flame torch is required).
  • Possible application on site or in job shop.
  • TufCote® application procedure is easy to learn,
  • TufCote® can be applied on construction steel (the hard steels, or special and expensive steels are not required).
  • Possibility to rebuild on a coating previously welded.
  • Coarse and angular tungsten carbide grains, for better resistance to abrasion (TufCote® Grade A).

TufCote® GRADE A Product Specification:

  • Self-fluxing alloy matrix: 37 to 40% in weight
  • Tungsten carbides: 60 to 63% in weight
  • Particle size: Grade A within 0.1 to 1.6 mm (10–150 mesh)
  • PackagingTufCote® is supplied as a continuous flexible cord, on spool.
    • Available in 4.75, 6.35 or 8mm ⌀.