Method of forming a bearing component
AssigneeThe Timken Company
InventorsPraveen Pauskar, Richard J. Abbruzzi, Wayne V. Denny
Life of this patent
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Abstract
A method of forming a component includes heating the component to a burnishing temperature above 500 degrees Fahrenheit, and burnishing a surface of the component while the component is at the burnishing temperature to densify the surface. The burnishing process at an elevated temperature may be integrated into other processes, such as the sintering or heat treating processes.
Claims18
A method of forming a bearing component from powder metal, the method comprising:
- pressing the powder metal;
- sintering the powder metal to form the component;
- heating the component to a burnishing temperature in the range of 900 to 1300 degrees Fahrenheit;
- and
- burnishing a surface of the component while the component is at the burnishing temperature to densify the surface.
A method of forming a bearing component from powder metal, the method comprising:
- pressing the powder metal;
- sintering the powder metal at a sintering temperature to form the bearing component;
- cooling the bearing component from the sintering temperature to a burnishing temperature in the range of 900 to 1300 degrees Fahrenheit;
- and
- burnishing a surface of the bearing component while the bearing component is at the burnishing temperature to densify the surface to a depth of 1 to 2 mm.
A method of forming a bearing component from powder metal, the method comprising:
- pressing the powder metal;
- sintering the powder metal at a sintering temperature to form the bearing component;
- allowing the bearing component to cool to a temperature below a burnishing temperature;
- re-heating the bearing component to the burnishing temperature, the burnishing temperature being in the range of 900 to 1300 degrees Fahrenheit;
- and
- burnishing a surface of the bearing component while the bearing component is at the burnishing temperature to densify the surface to a depth of 1 to 2 mm.
Dependencies are inferred from the claim text.