B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
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.
Deroo Daniel Lee
Jones David P.
Maberry John Joseph
Revankar Gopal Subray
Borden Ladner Gervais Llp
Deere & Company
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