Method of impregnation of iron with a wear resistant material

Details Method of impregnation of iron with a wear resistant material Method of impregnation of iron with a wear resistant material

B - Operations, Transporting

22

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22/175

B22D 19/00 (2006.01) B22C 9/04 (2006.01) B22D 19/04 (2006.01) B22D 19/08 (2006.01)

Patent

CA 2026918

ABSTRACT OF THE DISCLOSURE A method for impregnating an iron product with a hard wear-resistant material surface layer comprises providing a destructible pattern of the desired iron product and applying a paste which comprises a powder of the wear-resistant material and a binder comprising a solution of polyvinyl alcohol onto a portion of the surface of the pattern. The pattern is then coated with a refractory layer by applying a suitable aqueous slurry. A mold is made using the pattern and then an iron melt is cast into the mold thereby forming an iron product having a wear-resistant material surface layer. In other embodiments, the method includes the formation of a cavity in the pattern where the binder and particles are introduced into the cavity. In addition, a sheet comprising the binder and particles can be formed, which sheet is then attached to the pattern.

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