Those in industry who work with metals, metal components, and metal machinery, and are familiar with the frustration of machine and component failure due to the galling of metallic surfaces, will appreciate a solution to this problem through a practice known as “babbitting.”
Babbitting refers to the coating of a metal surface, casting, or bearing with a Babbitt metal; which is essentially a different material from that which is being coated. A Babbitt or Babbitt metal is one of any number of metal alloys used to protect from the galling of metallic surfaces.
Galling refers to a type of severe abrasive wear on metallic surfaces; an abrasion that can occur between at the interface of two contacting rubbing or sliding metal materials. It is, in effect, a microscopic transfer of material between metallic surfaces. Galling is also sometimes referred to as cold welding. It can take place between surfaces like bearings and casings that are under sufficient load and in motion with friction to cause the transfer of metallic material, thereby leading to metal component failure.
Some of the principal factors that can affect galling include the properties of the metallic materials (such as surface hardness and microstructure), the applied load, the contact area and degree and intensity of movement, the duration of contact, and even the environment and design of the materials.
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Canada Metal North America
8271 Lafrenaie, Montreal,
Quebec , Canada
H1P 2B1
Phone No: 1 800 363-7110
Email: contact@canadametal.com
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