Furnaces & Atmospheres for Today's Technology
June 15-16, 2010
The Furnaces & Atmospheres for Today's Technology event is held every year for industry professionals to present the latest improvements in heat treat furnaces. The event provides basic, practical information for individuals new to heat treat responsibilities or planning to buy new or used equipment. Click here for attendee comments on the October 2009 event.
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Technical Program
Technology, Equipment, Best Practices
Speakers will discuss the history and progress of the technology along with the latest information on process development in the past year. Topics include:
Questions? Contact Beth Ryan at 1-814-332-8437 or email bryan@secowarwick.com
FAQ
Vacuum Furnaces | Bulk Gases | Atmosphere Generators | Heat Transfer
Please note: Answers published here are general in nature and not intended to be applicable in every situation. The latest design, materials and equipment specifications should be considered as changes may occur due to product or service improvement. Call SECO/WARWICK for more information.
Vacuum Furnaces
Q. How long does it take to pump down for a leak rate test?
A. Usually, around 15-20 minutes, for more information, please refer to the following links:
Rate of Rise Maintenance Tip: http://www.secowarwick.com/metalminutes/maintenancetips/rateofrisetest.htm
Leak Testing Maintenance Tip:
http://www.secowarwick.com/metalminutes/maintenancetips/leaktestinginvacuum.htmBulk Gases - Answer by Bob Esper, Praxair
Q. What are the typical grades of nitrogen purity for heat treatment?
A. Typically, standard industrial grade nitrogen, 99.998%, is the right choice:
- P
urity Specification: >99.998%
- Moisture: <4 ppm
- Oxygen: <8 ppm
Q. The membrane method - how hard is it to maintain?
A. Membrane systems are very robust. Typically a membrane bundle will last indefinitely unless fouled by a hydrocarbon in the air. Membranes do not require maintenance other than for the air moving equipment that push air through the membrane bundle.
Generated Gases
Q. What happens when the chemistry changes in the natural gas?
A. During a cold spell in the winter months, peak shaving is used to stretch the natural gas supply for the duration of the cold spell. Continuous peak shaving may result in poor performance and soot formation in the retorts of atmosphere generator combustion chambers and coolers.
Peak Shaving Maintenance Tip: http://www.secowarwick.com/metalminutes/maintenancetips/peakshaving.htm
Heat Transfer
Q. How do you determine load temperature inside the furnace?
A. Load thermocouples; there is a methology that varies with processes and load configurations, here are two examples from aluminum furnaces:
Controlled Atmosphere Brazing Profiling System
An excellent resource for more information is DataPaq
When asked, "What did you like the best?" here is what attendees said about the October 2009 Event
“Industrial trends in heat treating”
“The format, from beginning to end of the heat treat process and how it functions.”
”The different array of subject matter covered by the presentations. It was extremely informative.”
“The binder that was given to us with all the material from the presentations was organized VERY well.”
“Organized, on time schedule.”
“Generated atmospheres, maintenance and Spang presentation.”
“Excellent, broad based coverage of all areas.”
“Everything was excellent”
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