Printer hammer tip and method for making

A method of forming a printer tip on a metal printer hammer spring comprising:

• providing a printer tip from a range of materials from the group consisting of sintered tungsten carbide, cemented tungsten carbide, composite ceramics, metallic materials, noble metals, metal carbides, borides, nitrides and alloys and mixtures thereof;
• pressing said printer tip against a printer hammerspring;
• electrically softening said printer hammerspring through a voltage established by an electrode contacting said printer tip;
• pressing said printer tip into a surface of said hammerspring without substantially deforming said printer tip;
• fusing said hammerspring to said printer tip;
• and,
• milling a desired form to said printer tip and hammerspring by an electrode discharge milling process.

A method for forming a printer hammerspring with a printer tip comprising:

• providing a steel hammerspring;
• providing a cemented tungsten carbide sphere with a range of cobalt from 2½% to 12%;
• impressing said cemented tungsten carbide sphere against said hammerspring while fusing said sphere to said hammerspring through a softening of the steel of said hammerspring;
• placing said tungsten carbide sphere into a portion of a surface of said hammerspring;
• and,
• electrically discharge milling said sphere to a desired printer tip shape.

A method of forming a print hammerspring with a printer tip comprising:

• providing a printer tip made of cemented tungsten carbide;
• providing a printer hammerspring;
• electrically fusing said printer tip to said printer hammerspring by maintaining the temperature of said printer hammerspring below the melting temperature of said printer tip;
• and embedding said printer tip at least partially into a surface of said printer hammerspring without substantially deforming said printer tip.

A method of forming a printer tip to a steel print hammer comprising:

• providing a printer tip of cemented tungsten carbide in the range of 2% to 12% cobalt;
• disposing an electrically conductive metallic surface on said printer tip;
• fusing and impressing said printer tip into and below a portion of a surface of the steel of said print hammer at a temperature below the melting temperature of the cemented tungsten carbide of said printer tip;
• and,
• electrode discharge milling said printer tip to a desired shape.