Tooth root testing of steels with high cleanliness
The power density of gearboxes is continuously increased through different research activities. Besides new material developments, steel cleanliness comes to […]
Induction Gear Hardening: Part 2
This is the second installment of a two-part article on induction hardening of gears and gear-like components. Part 1 was […]
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. […]
Extending gear life in demanding applications
Although gears and other precision components are generally made of hardened steel or metal alloys, those used in high load […]
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 […]
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 […]
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 […]
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 […]
Forging: 101
Introduction PeripWhen buyers must select a process and supplier for the production of a critical metal component, they face an […]
Comparative Corrosion Characteristics of Ground and Superfinished Gear Steels
The described effort was undertaken to assess the impact of the isotropic superfinishing (ISF®) process on the corrosion resistance of […]
Rolling Contact Fatigue of Surface Densified PM Gears
Surface densification provides the opportunity for PM technology to advance into the manufacture of highly stressed product groups, such as […]
Engineered Systems for Forging Operations
Forging is a diverse industry, and Seco has a number of different furnaces, atmosphere generating systems, and quenching systems to […]
High Performance Gears for Heavy Duty Transmissons
Planetary gears in heavy truck gearboxes are normally manufactured by forging a blank, turning, hobbing, shaving, and heat-treatment followed by […]
Engineered Heat Treatment for Stronger Aerospace Gears
It is well established that carburization of low alloy steels promotes compressive residual surface stress upon quenching, and that compressive […]
Steeling Savings with P/M Materials
Recent advances in powder manufacturing and processing have made chromium an attractive element in P/M manufacturing. In addition to chromiumís […]
Forging Foundations
In past issues we’ve featured forging companies serving the gear-manufacturing industry in our profile and Q&A sections, and talking with […]
