Autogenous wire spraying

In autogenous wire spray all spraying materials which can be pulled in a wire shape (metals and metal alloys), are molten in a acetylene/oyxgen flame and sprayed, using compressed air, onto the workpiece. Hence a lamellar structure is created because particle by particle is slammed onto the base material.

Autogenous wire spraying

The spray layers applied in this way are more or less impact or shock resistant. The structure of the modified layer is always micro-porous (up to 40%). This gives the ability to hold oil and thus self-lubricating properties are obtained.

Despite the flame temperature of about 2800-3000°C, autogenous wire spray is a so called cold process. I.e. the workpiece temperature during spraying will not exceed 150°C. The advantage is that any distortion or structural change of the base materials is excluded.

Features of autogenous wire spray coating

  • Microporous lamellar structure
  • High degree of oxidation in the coating
  • Good adhesion and density of the layer
  • Simple process to perform
  • Versatile and reliable
  • High production capacity
  • Inexpensive thermal spraying process


Autogenous wire spray materials

  • Aluminium
  • Babbits
  • Bronzes
  • C- and stainless steel
  • Copper
  • Molybdenum
  • Monel
  • Nickel


Typical coatings

  • Various stainless steel alloys
  • Nickel based alloys
  • Copper and copper alloys
  • Aluminium
  • Zinc


Applications of autogenous wire spraying

  • Corrosion protection

    For locks, bridges, etc. with aluminium, zinc and their alloys

  • Electric shielding

    (Shielding) with tin, zinc et cetera

  • Anti slip

    And traction coatings

  • Boiler walls or incinerators

    Against high temperature erosion and chemical degradation

  • Repairs or size corrections

    From run-in journal or bearing seats with nickel base alloys


Metalo is supplier for a.o.

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