Cleaning and liquid contact with solids – Processes – Including application of electrical radiant or wave energy...
Reexamination Certificate
2005-05-10
2005-05-10
Markoff, Alexander (Department: 1746)
Cleaning and liquid contact with solids
Processes
Including application of electrical radiant or wave energy...
C134S002000, C134S003000, C134S026000, C134S028000, C134S029000, C134S042000
Reexamination Certificate
active
06890389
ABSTRACT:
In order to remove or decrease fine granular sulfides of Mn, Cr, Mo, etc. (Mn—S, Cr—S, Mo—S, etc.) left on a machined workpiece surface of sulfur free-cutting alloy steel without affecting the form and dimensional accuracy thereof, there is provided a method for treating the sulfur free-cutting alloy steel which comprises a soaking process of the machined workpiece in a solvent and an ultrasonic cleaning process by applying ultrasonic waves of 1.0 to 2.0 W/cm2in watt density at a frequency of 40 KHz or a multi frequency in the solvent.
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Nasu Masato
Okamiya Akio
Flynn ,Thiel, Boutell & Tanis, P.C.
Markoff Alexander
Minebea Co. Ltd.
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