Method of welding a friction material to a reinforcing member
AssigneeThe Bendix Corporation
InventorsJohn P. Kwolek, William G. Urso, Trevor D. Jones
Life of this patent
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Abstract
A method of making a brake friction pad which includes the steps of placing a sintered friction material into a retainer cup, heating the friction material and the retainer cup to a predetermined temperature in an inert atmosphere, and striking the friction material with a single blow of a predetermined force. This single blow increases the density of the friction material and establishes a metallurgical bond between the friction material and the retainer cup.
Claims6
A method of attaching a sintered friction material to a retainer comprising the steps of:
- placing the sintered friction material on said retainer;
- heating said sintered friction material and said retainer to a uniform temperature between 1400.degree. to 1650.degree. F;
- and
- striking said heated sintered friction material and said retainer with a single compressive force between 7000 and 20,000 psi to compact said friction material to a predetermined density and to bond said sintered friction material to said retainer.
A method of manufacturing a brake pad comprising the steps of:
- filling a mold with a copper base friction material;
- densifying the copper base friction material in said mold;
- placing the densified copper base friction material in a furnace;
- raising the temperature in the furnace to sinter said copper base friction material;
- removing the sintered copper base friction material from said furnace;
- placing the sintered copper base friction material sn a retainer;
- heating said sintered copper base friction material and retainer until a uniform temperature between 1400.degree. to 1900.degree. F is reached;
- and
- striking said heated retainer and sintered copper base friction material with a single compressive force to compact said copper base friction material to a predetermined density and to metallurgically bond said copper base friction material to said retainer.
Dependencies are inferred from the claim text.