|Processes Offered||Mt. Hope Lansing MI||Bassett St. Lansing MI||Canton, OH||North Vernon IN||Pleasant Prairie WI|
|Annealing – Full, Subcritical & Isothermal||X||X||X||X|
|Quench & Temper – Oil||X||X||X|
|Quench & Temper – Polymer||X||X|
|Quench & Temper – Water||X||X|
|Phosphate & Lube Coating||X||X|
|Pickling & Oiling||X||X|
|Bar Saw Cutting – Precision||X||X|
|Rough and Finish Grinding||X|
Open-fire Normalize: Forgings are heated to about 100 F over the upper critical temperature followed by air cooling to room temperature.
Benefit: Raw forgings have asymmetrical properties based on the direction of material flow which makes machining difficult. Normalize process homogenizes the microstructure and reduces the hardness. They both make the parts conducive to machining.
Isothermal Anneal: Heat up is similar to normalize in the first furnace, but the parts will be held at a specific temperature instead of air cooling until the transformation is complete in a second furnace.
Benefit: Normalize process may not be able to produce machinable microstructure in certain grades and high alloy steel. Isothermal anneal is required in those situations.
Quench & Temper: Austenitize to about 50 F over the upper critical temperature followed by quenching in Oil, Polymer, or Water, then temper below the lower critical temperature to produce desired hardness.
Benefit: Capable of producing a wide range of hardness by varying the tempering temperature. Microstructure produced by quenching is resistant to wear.
Atmosphere Quench & Temper: Parts will be austenitized in protective atmosphere to minimize scale (iron oxide) and decarburization. Tempering occurs at low enough temperatures that scale and decarburization are not produced.
Benefit: With protective atmosphere, the amount of scale on the parts will be minimal. Helps in reducing steel requirement for the forgings and eliminating shot blast process.
Ferritic Nitrocarburizing: Ferritic nitrocarburizing is a case hardening process in which nitrogen and carbon are diffused into ferrous metals at sub-critical temperatures.
Benefits: A green alternative to chrome plating, the parts have high wear resistant and superior corrosion resistant surface with increased service life.
Coating (Phosphate and Lubrication): Coating chemically reactive zinc phosphate on the steel parts’ surface followed by coating with lubrication. Different types are lubrication will be used based on the cold forming requirement.
Benefit: Near net shape parts can be produced which will result in reduced raw material requirement and saving in machining. Heating the parts is not required to form parts which also aids in cost saving.
Pickle and Oil: Initially, the oil and grease from the material surface will be removed using caustic cleaner. Material will then be pickle cleaned in an acid bath for removal of surface oxides. Finally, the parts will be dipped in oil to protect them from rusting.
Benefit: Metallic and nonmetallic contaminations will be removed from the surface of the material. Material can be stored for a while without the risk of rusting.
Stress Relieve: Parts are taken to and held at an appropriate temperature to relieve the residual stresses created in the prior operations.
Benefit: Operations such as rough machining and cold forming can generate residual stresses in parts. If not removed, these stresses can release themselves in an uncontrolled fashion causing dimensional issues at subsequent operations. This process is required on welded material to keep them stress-free.