An armchair guide for predicting results for LPC and atmosphere carburizing
Over the last few years I’ve contributed to discussion and dissection, and have generally peeled away the layers to discover how the LPC and...
Trend Talks: Tim Byrd
Staying in control of a gear business — its products, workforce, and reputation — is a process as meticulous as cutting a gear. For...
The Casting Process for Gears, Part II
White Iron will Normally Contract at 1/4” per Foot.
Contraction is not always equi-dimensional, in that it is influenced by mass and configuration. Contraction is...
High-Speed Steel
To be effective in cutting a gear, a cutting tool material must have a combination of the following qualities:
• Durability: The ability to withstand—to...
Heat treating, carburizing, and furnaces: how and why we arrived where we are today
In the most general terms, heat treating is an atmospheric or vacuum process with applications for hydrocarbons to ferrous and nonferrous metals. The largest...
Trend Talks: Tim Byrd
In 2014, it’s difficult to imagine the gear industry without a digital element. Design software, metrology devices, even cutting tools have their roots in...
Q&A with John Vanas Jr.
What kind of services does Euclid Heat Treating provide?
Euclid offers a diverse selection of heat treating processes. We perform many of the commonly found...
The Casting Process for Gears, Part I
The advantages of using castings for engineering components such as gears are well appreciated by design engineers. Of major importance is the fact that...
Controlling Profile, Lead, and Spacing
This column marks the end of a three-part discussion on control of the three basic elements: profile, lead, and spacing. Figure 1 depicts three...
FNC and gas nitriding use in applications where reduced surface friction is a requirement
Gears are not the only commodity to receive the benefit from FNC (Ferritic-Nitro carburizing). Brake rotors have also become a popular recipient of the...
Trend Talks: Tim Bryd
Standard: a level of quality, achievement, etc. that is considered acceptable or desirable.
In theory, standards aren’t necessary. In fact, in practice, standards aren’t necessary....
Q&A with Michael Massarsky
What is turbo abrasive machining (TAM)?
AM machines could be likened to free abrasive turning centers. They utilize fluidized bed technology to suspend abrasive materials...
Trend Talks: Tim Byrd
I never thought a career in technical writing would put me in contact with so many different cultures. Every week, I speak to people...
Q&A with Steve Schilling
Tell me about your history with the NUM Corporation.
I began my career as a controls engineer working for an OEM that built gear hobbers....
Closed Die Forging
Forging is the process of forming and shaping metals through the use of localized compressive forces. Forgings are worked above their recrystallization temperature and...
Accuracy of Profile, Lead, and Spacing
Noise
The primary cause of gear noise is the number of teeth in the gear and the contact ratio of the given set. These are...
An accurate comparison between LPC/HPGQ and endo atmosphere carburizing cell
Typically, LPC/HPGQ systems have evolved into individual batch carburizing chambers with continuous prewash, pre-oxidizing, and continuous tempers. Atmosphere carburizing cells retain a complete batch...
Gear Rating vs. Percent Lower Transformation Products in Steel Gears
Some gear rating specifications, such as the popular the AGMA 2001, require a minimum percentage of lower transformation products (martensite, lower bainite)1 to a...
Modifications in Pre-Finished Gears
Profile: These modifications are made to accommodate the characteristics of the finishing process. (Figure 1a)
Chamfer: The Chamfer is meant to protect the tip of...
Equipment hardware with nitrogen/methanol carburizing atmosphere and the necessary utility configurations
In the March Hot Seat column, I presented the operating cost for a standard UBQ batch furnace carburizing cell processing 3000 net pounds of...
