TUNGSTEN CARBIDE HARD FACING

A highly cost effective method of increasing the life span of cutting and grinding wear-plates and points on machinery and equipment. TungChip can extend the lifespan of a point or part, by approximately five times its normal usage. In some cases, up to ten times the life, and even more has been achieved. Get in touch with Active VMA to talk about maximising the wear and impact of your equipment.

Many features and benefits stand the TungChip process above existing wearfacing:

  • It can be applied to rounded and rough surfaces.
  • Is able to be applied or reapplied many times over existing tungsten coatings.
  • Is impact resistant and does not easily chip off.
  • Can be placed where wearing is a problem, maintaining the point shape for better penetration.
  • Time saved from not having to change the points and components as often.

The purer the application the better the product functions.

The unique TungChip hard-facing process extends the life of ground-engaging points and machinery parts with it’s superior tungsten carbide overlay process. TungChip provides enormous benefit to many industries.

The crystalline structure of pure Tungsten lends itself to being almost comparable in hardness to diamond, in mixing it with various other metals, a useable product is produced which enables the application to be applied to the base metal, and thereby increasing resistance to erosive properties whilst engaged in all abrasive workings.

APPLICATION

The TungChip application uses a process that allows the Tungsten Grit to penetrate the parent material therefore allowing the matrix weld to be impervious to impact. The TungChip Machine allows no foreign particles into the matrix weld therefore giving the weld a density of unparrallel hardness.

TungChip’s tungsten coating is formulated to maximise the wear and impact resistance of the application to reap the ultimate benefits of the properties of Tungsten. TungChip consistantly exceeds 60+ Rockwell C within the matrix binder.

PROPERTIES

Properties of Tungsten Carbide

Tungsten is one of the hardest metals known to man. The Periodic Table lists the following:

  • Molecular Formula: WC & W2C, depending on the carbon content.
  • Melting Point: 3422 degrees celsius
  • Boiling Point: 5555 degrees celsius
  • Hexagonal Crystalline structure
  • Mohs hardness scale is 8.5 to 9.5 (diamond being 10.0). (Approximate Vickers 1200 to 1700, or Rockwell C 89+)
  • Tungsten is sintered in varying percentages with Colbalt and other metals, to form a Grit that is suitable for hardfacing applications in a CO2/Mig Weld

 

Properties of Colbalt:

  • Colbalt is a hard lustrous grey metal, widely used for wear resistant, high strength Alloys.
  • Molecular Formula: Co
  • Hexagonal Crystalline structure
  • Mohs hardness scale is 5.0 to 5.5 (Approximate Vickers 500 to 800, or Rockwell C Scale 76+)

 

Properties of Mig Welding Wire:

  • Mig Semi Automatic or Automatic Feed.
  • Temperature on the parent metal face varies between 1500 degrees celsius and 2300 degrees celsius.
  • The product defines the degree of hardness, but is usually below Mohs 4.5 (Approximate Vickers 400 to 500, Rockwell C 41 to 49)
  • The above facts are based on basic Mig Wire. Harder wires are available which will enhance the Tungsten Carbide application hardness properties.