Methods of producing clad metals
AssigneeNippon Steel Corporation
InventorsAkihiro Miyasaka, Hiroyuki Ogawa
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Abstract
A clad metal is produced by forming a layer of a dissimilar metal powder on the surface of a base metal by cold fixing the powder to the surface under pressure, densing only the surface and a subsurface area of the layer of the dissimilar metal powder by melting and immediately solidifying in a vacuum, compressing the layer of the dissimilar metal powder together with the base metal at a temperature not higher than the solidus-line temperature of the two dissimilar metals under a pressure of not lower than 300 kgf/cm.sup.2 (or 29.4 MPa) using a hot isostatic press, and hot working the layer of the dissimilar metal powder together with the base metal.
Claims9
A method of producing a clad metal comprising the steps of:
- forming a layer of a dissimilar metal powder on the surface of a base metal by cold fixing the powder to the surface under pressure;
- densing only the surface and a subsurface area of the layer of the dissimilar metal powder by melting and immediately solidifying in a vacuum;
- compressing the layer of the dissimilar metal powder together with the base metal at a temperature not higher than the solidus-line temperature of the two dissimilar metals under a pressure of not lower than 300 kgf/cm.sup.2 using a hot isostatic press;
- and
- hot working the layer of the dissimilar metal together with the base metal.
Dependencies are inferred from the claim text.