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The History of Electroplating and a Historical Review of the Evolution of NASF
The History of Electroplating [caption id="" align="aligncenter" width="149"] Luigi Galvani[/caption] Luigi Galvani, was born in Bologna, Italy on September 9,...
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Mechanical Paste Polishing vs. CAVF Finishing of Gears
A Quick Review of CAVF Processing In CAVF, an HDNA media fills the vibratory unit. The high-density, non-abrasive media is...
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The Challenges of Generic Deburring vs. CAVF Deburring
Media Attrition Chart for Common Media Blends Below is detailed a table that reviews the compositions, densities, and attrition rates...
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Materials Matter (DE)
Roughness measurement: Optical vs. contact stylus profilometry Optical profilometry will become an important tool for predicting gear performance with more...
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Changes Ahead in the Roughness Standards
The ISO Standards The four ISO standards listed above are part of a family of GPS (Geometrical Product Specifications) standards...
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Rotorcraft Gearbox Regulations: LOL (not what you think)
Figure 1: Left, an as-manufactured gear; right, the failed gear due to LOL gear (Aviation Investigation Report A09A0016). During the...
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Materials Matter : Roughness Measurement Tips: Calibration, the Razor Blade Test
A profilometer used for measuring surface texture. (Courtesy: Shutterstock) Figure 1: Mahr certification protocol (Courtesy: Mahr GmbH). Unless a...
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Roughness Measurement Tips: The Scratch Pad
The scratch pad Due to the increasing quality of engineered surfaces, roughness measurement capability developed greatly during the second half...
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Vibratory Media Compositions vs. Attrition and Density
WHAT IS ATTRITION RATE? Attrition rate is the rate at which media decomposes during the vibratory run. More abrasive media...
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Selecting media for optimum vibe bowl gear finishing
Aluminum oxide grit used in abrasive ceramic media. Finally, spherical media offers the least efficient contact pattern possible, contacting a...
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Materials Matter: How to Set Up a Vibratory Bowl for Gear Finishing
SETTING UP THE VIBE BOWL FOR OPTIMUM GEAR-FINISHING PERFORMANCE Amplitude is a commonly cited tool for gauging the correct machine...
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Physical Characteristics of the Vibratory Bowl and How They Affect Processing Efficiency
Durometer hardness is measured using durometer tester. [caption id="attachment_2593" align="alignleft" width="215"] Image of a durometer tester3[/caption] Activating a durometer tester...