Reducing Atmosphere Heat Treating

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• Lube it for life
  create the burnish graphite film on the metal counter surface, and react chemically with the carbon material to inhibit oxidation. In neutral or reducing atmospheres, oxidation isn't typically a problem. Carbon-graphite grades will shrink some when heated in a neutral atmosphere above 1,800 F (1,000 C...
• Brazing Processes
  and the filler metals being used. Base metals with readily reducible oxides can be brazed in an atmosphere of combusted natural gas or cracked ammonia. Dry hydrogen, a powerful reducing agent, can be used for brazing most stainless steels and many nickel, cobalt, and iron-base alloys. Heat...
• Batch Oven Selection Guide (.pdf)
  Laboratory testing u Heat treating. When using forced recirculating airflow, parts still benefit from spacing, but can be loaded. u Clean process production u Drying. more densely vertically because airflow is distributed along the entire side wall. Parts should. still be kept 2-3 inches (5.1 - 7.6cm...
• How to Select the Right Vacuum Pump for the Application (.pdf)
  . in series with a suitable mechanical vacuum pump with a system capacity of 500 to. 20,000 CFM. The configurations vary with roots blowers in series or in parallel backed. by one or more mechanical vacuum pumps. Some heat treating applications call for. secondary vacuum pumps such as diffusion pumps...
• Wiremesh Substrates for Oxidation, TWC and SCR Converters (.pdf)
  atmosphere. Vacuum. furnace uses low atmospheric pressures instead of the protective The geometric tolerances are optimized and process capability. gas atmosphere used in heat treating furnaces. Vacuum brazing is established. A representative process capability of the round sub-. widely used to braze...
• Aluminum
  for entrapped air since the metal is flowing into the cavity with high velocity and turbulence. Because of the potential for entrapped air, die castings are normally not heat treated. Heat treating a die casting can cause a blistering on the surface of the casting. Hydrogen shrinkage is also a concern...
• Nickel
  compositions are Ni-Mo and Ni-Si. One binary type, Hastelloy alloy B-2 (Ni-28Mo), offers superior resistance to hydrochloric acid, aluminum-chloride catalysts, and other strongly reducing chemicals. It also has excellent high-temperature strength in inert atmospheres and vacuum. Cast nickel-copper...
• Glossary of Forging Terms
  lug A lug or boss to the forging so that "on center" machining and forming can be performed with one setting or chucking; this lug is machined or cut away on the finished item. Cleaning The process of removing scale, oxides, or lubricant acquired during heating for forging or heat treating...
• Covering Your Tail Gas
  the necessary heat was deployed on this system, further reducing operating costs. The preheat component eliminates the need for additional equipment (gas-fired heater, steam coil) and further minimizes auxiliary fuel consumption. The next step in the corrosion-protection strategy is to implement various...
• Controlling Laboratory Workstation Exhaust at Wastewater Treatment Facilities: Theresa Street Wastewater Facility, Lincoln, NE
  FANS WITH HEAT RECOVERY MODULES at the. advanced research laboratory for. Theresa Street Wastewater Facility prevent laboratory workstation fume. monitoring and pre-treating munic-. hood exhaust from reentering the building, eliminate neighborhood odors,. ipal and industrial wastewater...

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