Chemical mechanical machining and surface finishing

A technology of surface finishing and chemical substances, applied in the direction of mechanical equipment, metal processing equipment, grinding machine tools, etc., can solve problems such as lubricant residue and wear, and achieve the effect of improving machining accuracy and reducing volume
CN1491146AInactive Publication Date: 2004-04-21REM TECHNOLOGY INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
REM TECHNOLOGY INC
Publication Date
2004-04-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention described herein discloses a chemical mechanical machining and surface finishing process. A conversion coating is formed on the surface of a workpiece and is removed via relative motion with a tool, thereby exposing the workpiece to further reaction with the active chemistry. Low mechanical forces are used such that the plastic deformation, shear strength, tensile strength and / or thermal degradation temperature of the workpiece are not exceeded. Since the chemical mechanical machining and surface finishing process requires little force and / or speed of contact to remove the conversion coating, the equipment's mass, complexity and cost can be significantly reduced, while simultaneously increasing machining precision and accuracy. The present invention lends itself to a very controlled rate of metal removal, and can simply surface finish the workpiece, or if desired, can surface finish the workpiece simultaneously with the shaping and / or sizing process.
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Description

Background technique

[0001] Traditional machining is a highly aggressive process. Even at the microscopic scale, such processing almost always results in metallurgical damage, no matter how much care is taken, due to the highly concentrated force applied and the consequent localized high temperature peaks. Such damage may include microcracks, introduction of stress concentrators, oxidation, phase transformation and reduction of beneficial compressive residual stresses and reduction of microhardness. Grinding operations, for example, can generate enough heat to temper the surface of the hardened workpiece, often referred to as abrasive burn, thereby reducing the wear fatigue and contact fatigue properties of the workpiece. In addition, traditional machining has always produced burrs and machining lines. These residual burrs and machining lines must be removed from critical surfaces to reduce wear, friction, operating temperature, scratches, contact fatigue failures (pitting) ...

Claims

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