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Measuring Root/Flank Stress in Plastic Gears

The number of plastic gears used in different applications is increasing every year, mostly due to their cost effectiveness for […]

Fatigue Performance and Cleanliness of Carburizing Steels for Gears

The cleanliness of steels used for gears is of great importance when looking to improve their life or increase loads. […]

An Experimental and Analytical Comparison of the Noise Generated by Gears of Austempered Ductile Iron (ADI) and Steel Materials

Over the years, there have been many claims made concerning the relative noise performance of austempered ductile iron (ADI) versus […]

Contact Ratio Optimization of Powder-Metal Gears

Powder metal (PM) alloys are becoming more of a solution for high-performance gears, not only because of part price but […]

Gear Design Relevant Cleanness Metrics

The “Metallurgical Specifications for Steel Gearing” information sheet (AGMA 923-B05) [1] details non-metallic inclusion limits to meet AGMA grade expectations […]

Accelerated Testing and Temperature Calculation of Plastic Gears

Plastic gears have been in use since the 1950s, and their popularity has increased significantly in the last few years. […]

Testing and Validation of Powder Metal Gears in a 6-Speed Manual Transmission

A 6-speed manual transmission was redesigned and optimized using powder metal steel as the gear material. The design work was […]

State of the Art in Microstructure and Metallurgy Modeling

Anticipating the microstructure evolution during the manufacturing process has long been a major concern for specific industries such as aerospace. […]

Developing a Lighter, Stronger, and Cleaner Air-Melt Steel for Critical Applications

Steel components, particularly those used in critical applications such as bearings and fuel injection systems, are increasingly expected to be […]

Advantages of Direct Gear Design For Automotive Polymer Gear Drives

Invention of the gear-generating machining process that uses the gear rack shape tooling cutting edge (as shown in Figure 1) […]

A Comparison of Wrought Steel Gears and Surface – Densified Powder Metallurgy Gears

Automotive transmission gears are responsible for transmitting torque from the engine to the wheels. In the process of transferring torque, […]

High Temperature Vacuum Carburizing Drives Alloy Development

Vacuum carburizing (low pressure carburizing, or LPC) is a process used to impart hardness, wear resistance and increased fatigue life […]

Induction Hardening for Wind Turbine Bearing Rings

It seems nothing  —  not even a worldwide financial crisis — can stop the rise of wind energy. The 2008-12 […]

TOOLING & WORKHOLDING: Making the Most of G90s Advantages

In his article, “Uncover Hidden Potentials in Hobbing,” which appeared in the June 2014 issue of Gear Solutions, Dr. Friedrich […]

Forging: 101

Introduction PeripWhen buyers must select a process and supplier for the production of a critical metal component, they face an […]

Molecular Decomposition Process = Electrochemical Assisted Precision Form Grinding

Introduction Molecular decomposition process is an electrochemical grinding process that has been refined to enable: – The removal of increased […]

Application of ICME to Optimize Metallurgy and Improve Performance of Carburizable Steels

Introduction QuesTek Innovations LLC  (“QuesTek”) of  Evanston,  IL  uses  its  proprietary  Materials  by  Design® expertise and technology in conjunction with […]

Powder Metallurgy of High Density Helical Gears

Powder Metallurgy is a proven technology to produce high strength gears for the automotive industry.  Advances in powder production, compaction, […]

A New Standard Under Development: Specifying Powder Metallurgy Gears

In the early nineties, I was working at a transmission manufacturing facility in Indiana that made lawn and garden transmissions. […]

Failure Analysis of H13 Gear Blank Forging Dies

Forging is defined as the process of working hot metal into a desired shape by impact or pressure1. The hot […]

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