roughness specification Archives - REM Surface Engineering

Surfaces: More than just roughness

Posted by Danny Estrada on Monday, July 24th, 2023 in

As the manufacturing community changes and evolves, there is always a need to reevaluate how one thinks about things. New […]...

An Overview of Correct Vibratory Bowl Set-Up

Posted by Danny Estrada on Monday, June 12th, 2023 in

Step 2: Media Mass Planes of Motion Media has two planes of motion in the vibratory bowl. The first plane of […]...

Post-Process Superfinishing of Additively Manufactured Components for Next-Gen Space Application

Posted by Danny Estrada on Thursday, November 4th, 2021 in

REM Surface Engineering and Additive Manufacturing The past decades have seen Additive Manufacturing (AM) develop from an idea to a […]...

Scratching the Surface: How Surface Engineering Fills in the Gaps that AM Leaves Behind

Posted by Danny Estrada on Wednesday, May 12th, 2021 in

Prior to 3D printing’s arrival on the manufacturing scene, the US military supply chain was often met with lengthy and arduous timelines for critical asset production. This not only stalled the manufacture and repair of essential equipment within t...

Case Study of ISO/TS 6336-22 Micropitting Calculation

Posted by Danny Estrada on Wednesday, May 5th, 2021 in

ISO/TS 6336-22 (Calculation of load capacity of spur and helical gears — Part 22: Calculation of micropitting load capacity) is the ISO technical specification containing a proposal for a calculation for the risk of micropitting in gear sets....

Mechanical Paste Polishing vs. CAVF Finishing of Gears

Posted by Danny Estrada on Monday, August 3rd, 2020 in

A recent Materials Matter article compared generic deburring versus CAVF (chemically accelerated vibratory finishing.) Both techniques are conducted in a vibratory unit....

The Challenges of Generic Deburring vs. CAVF Deburring

Posted by Danny Estrada on Sunday, July 19th, 2020 in

Relative to gear hobbing, shaving, and/or post heat-treat grinding to generate accurate tooth morphology there may come a time wherein vibratory deburring is a requirement to remove adherent burrs. ...

Gear designers and manufacturers will need to review and update their tooth flank roughness specifications based on the new ISO 21920 GPS family of standards.

Changes Ahead in the Roughness Standards

Posted by Mark Michaud on Friday, May 15th, 2020 in

I have written numerous articles on tooth flank surface roughness measurement. This is such a page-turner of a subject!...

Materials Matter : Roughness Measurement Tips: Calibration, the Razor Blade Test

Posted by Mark Michaud on Tuesday, February 25th, 2020 in

If a problem is found with a contact stylus profilometer during routine check with a Rubert-Song specimen, do a little troubleshooting before sending it off for calibration and recertification....

Roughness Measurement Tips: The Scratch Pad

Posted by Mark Michaud on Thursday, January 16th, 2020 in

From the perspective of the shop floor environment, the previous Materials Matter column “Roughness Measurement Tips: 2 V 5” discussed the contact stylus 2-micron radius tip versus a 5-micron radius tip....

Measuring Tooth Flank Roughness

Posted by Mark Michaud on Wednesday, January 23rd, 2019 in

Gear performance has continuously increased over the past two decades. Improvements in metals, heat treatments, geometry, and lubrication are just a few of the sources of these improvements....

AH-64 Loss of Lubrication Study: Test of Isotropic Superfinished AH-64 (Apache) Engine Nose Gearbox Without Black Oxide Coating

Posted by Danny Estrada on Wednesday, September 19th, 2018 in

Rotorcraft gearboxes are designed to the utmost precision to withstand the tremendous demand and loads required to convert thousands of horsepower and RPM into hundreds of RPM and lift torque....