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Product Bulletin
Recommended Uses for SECO/WARWICK Atmosphere Generators
Protective Atmosphere
SECO/WARWICK manufactures three types of protective gas atmosphere generators: Endogas® (endothermic), Exogas® (exothermic) and Ammogas® (dissociated ammonia). SECO/WARWICK's refrigerant dryers reduce dew point of exothermic atmospheres from 105°F/40°C to 40°F/4°C.
To learn more about the practical implementation of an atmosphere generator in your facility, follow this link for a background paper from the Furnace Controls & Sensors 2006 Conference that provides basic information: How to achieve the Best Performance and Longest Life from your Gas Generator.
The following chart may be used as a guideline for selecting protective atmosphere for a heat treatment process:
| Metals to be processed | Process | Time Cycle | Appearance | Temperature Range | Protective Atmosphere | ||
| Long | Short | Bright | Clean | °F | see notes below | ||
| Low Carbon Steels | Anneal | x | x | 1200-1350 | Exogas 2, 5 | ||
| Med. & High Carbon Steels | Anneal (no decarb) |
x | x | x | 1200-1450 | Endogas | |
| Alloy Steels, Medium & High Carbon | Anneal (no decarb) |
x | x | x | 1300-1600 | Endogas | |
| High Speed Tool Steels, Molybdenum | Anneal (no decarb) |
x | x | x | 1400-1600 | Endogas | |
| Stainless Steels, Chromium & Nickel Chromium | Anneal | x | x | x | 1800-2100 | Endogas | |
| Copper | Anneal | x | x | x | 400-1200 | Exogas 3 | |
| Various Brasses | Anneal | x | x | x | 800-1350 | Exogas 3 Ammogas | |
| Copper-Nickel Alloys | Anneal | x | x | x | 800-1400 | Exogas 3 | |
| Silicon Copper Alloys | Anneal | x | x | x | 1200-1400 | Exogas 2, 5 | |
| Aluminum Alloys | Anneal & Homogenize | x | x | x | 700-1100 | Exogas 2, 3, 5 | |
| Low Carbon & Silicon Steels | Anneal | x | x 6 | 1400-1500 | Exogas 2, 5 | ||
| Low Carbon & Silicon Steels | Bluing | x | x | 850-950 | Exogas 4, 5 | ||
| Low Carbon Steels | Copper Brazing | x | x | 2050 | Exogas 2, 5 | ||
| Medium, High Carbon & Alloy Steels | Copper Brazing (no decarb) |
x | x | 2050 | Endogas | ||
| High Carbon, High Chromium Steels | Copper Brazing (no decarb) |
x | x | 2050 | Ammogas | ||
| Stainless Steels | Copper Brazing Phosphorous Copper | x | x | 2050 | Ammogas | ||
| Copper or Brass | Brazing or Silver Soldering | x | x | 1200-1600 | Exogas 3 | ||
| Carbon & Alloy Steels | Hardening (no decarb) |
x | x | 1400-2400 | Endogas | ||
| Medium & High Carbon Steels | Hardening (no decarb) |
x | x | 1400-1800 | Endogas | ||
| Alloy Steels, Medium & High Carbon | Hardening (no decarb) |
x | x | 1400-1800 | Endogas | ||
| High Speed Tool Steels, Molybdenum | Hardening (no decarb) |
x | x | 1800-2400 | Endogas | ||
| All classes of Ferrous Metals | Tempering or Drawing | x | x | 400-1200 | Exogas 2, 5 | ||
| Carburizing Steels | Gas Carburizing | x | x | 1400-1800 | Endogas 1 | ||
| Low Carbon Steels | Normalizing | x | x | 1600-1850 | Exogas 2, 5 Endogas | ||
| High Carbon & Alloy Steels | Normalizing (no decarb) |
x | x | 1500-2000 | Endogas | ||
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Maintenance Tips for Atmosphere Generators:
Looking for more information and prices?
Fill our our Request For Quotation Form
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Phone (814)332-8400 - Fax (814)724-1407
info@secowarwick.com
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