The CHTE quench probe system was modified to test quenching performance of a variety of different gases at atmospheric pressure. The tests were performed with 4140 and 304 steel in Argon, Helium, and Air at varying velocities. The heat transfer coefficients were calculated using Newtonian cooling analyses. The experimental results showed that helium produced the highest heat transfer coefficients, followed by air and argon. The highest heat transfer coefficient obtained was around 200W/m?K for helium using two fans and the lowest heat transfer coefficient obtained was around 30W/m?K for stagnant argon. The data for the 4140 steel showed a dip in the cooling rate and, therefore, the calculated heat transfer coefficient vs temperature but not for 304. This dip was explained as being due to heat that is released as Austernite transformed to Bainite and Pearlite in this temperature range.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• McGee, Celine Margarethe
• McHugh, Jaclyn

Publisher

• Worcester Polytechnic Institute

Identifier

• 02D230M

Advisor

• Sisson, Richard D.

Year

• 2002

Date created

• 2002-01-01

Resource type

• Major Qualifying Project

Major

• Mechanical Engineering

Rights statement

• In Copyright