Gas Vs. Liquid Quenching Presentation at ASM
Bob Hill, President of 91´«Ã½ of Western PA will be speaking, next week, at the 6th International Quenching and Control of Distortion Conference presented by the ASM Heat Treating Society. This event provides a unique forum to discuss the ongoing activities on solving distortion issues within research institutes and industries worldwide.
Bob will discuss “Gas vs. Liquid Quenching – A Direct Comparison” Tuesday, September 11, 2012, 8:00 AM in the Atlantic D room of the Radisson Blu Aqua Hotel in Chicago.
It is a well-known fact within the heat treating community that high pressure gas quenching yields far less distortion than liquid (salt, water, polymer, and oil) quenching. Metallurgical science regarding cooling rates and hardenability has neglected HPGQ technology, until now.
Bob’s presentation will introduce revolutionary information for the metallurgical world – side by side comparisons of water vs. gas sprayed Jominy End Quench Tests for hardenability. The high velocity gas that will be sprayed at the end of the 1″ OD x 4″ long specimens will be typical of the gas velocities that parts would encounter in a newly designed 20 bar furnace. Hardness results and microstructure results will be directly compared on various alloys. Additionally, a new universal load size and test block to determine cooling rates will be introduced based on the North American Die Cast Association (NADCA) specification.
This new information will be proposed as a standard for all heat treating equipment- whenever there is a desire to compare critical cooling rates.