Composite coating for mold insert and method for making a coated mold insert
AssigneeXerox Corporation
InventorsPaul F. Mastro, Christopher D. Blair, Jennifer R. Wagner, Jay Schneider
Life of this patent
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Abstract
A mold used to form a magnetic member includes a mold body having a mold opening, a mold support that supports the mold cavity, and a mold insert. The mold insert is disposed in the mold opening of the mold body to form a mold cavity. The mold insert is coated with a coating to protect the mold body from chemical attack and abrasive wear of the mold material. The coating comprises an electroless nickel layer formed on or over the mold insert, and a chromium nitride layer formed on or over the electroless nickel layer. The mold insert can be formed of beryllium-copper (Be—Cu).
Claims36
A coated mold insert, comprising:
- a mold insert;
- an electroless nickel layer formed over at least one surface of the mold insert;
- and
- a chromium nitride layer formed over the electroless nickel layer.
A method of coating a mold insert with a coating, comprising:
- applying a layer of electroless nickel over the mold insert;
- and
- applying a layer of chromium nitride over the layer of electroless nickel.
A method of making a molded article using a mold body having a coated mold insert, the coated mold insert comprising a mold insert, an electroless nickel layer formed on or over at least one surface of the mold insert and a chromium nitride layer formed on or over the electroless nickel layer, the method comprising
- assembling the mold body and the coated mold insert to define a void;
- supplying material into the void to form the molded article;
- and
- removing the molded article from the mold body and the mold insert.
Dependencies are inferred from the claim text.