Title:
TREATMENT METHOD FOR FREE-CUTTING ALLOY STEEL CONTAINING SULFUR
Document Type and Number:
Japanese Patent JP3901979
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a treatment method for removing or reducing fine particles of sulfides (Mn-S, Cr-S, and Mo-S) of Mn, Cr, Mo and the like, remaining on the surface, without giving an adverse effect on accuracy of the shape and the dimension, from a machined workpiece of a free-cutting alloy steel containing sulfur.
SOLUTION: The treatment method for the free-cutting alloy steel containing sulfur includes a step of immersing the machined workpiece of the sulfur- containing free-cutting alloy steel into a solvent, and a step of cleaning it in the solvent with an ultrasonic wave having frequency of 40 kHz or multi- frequency at watt density of 1.0-2.0 W/cm2.
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Inventors:
Akio Okamiya
Masato Nasu
Masato Nasu
Application Number:
JP2001314652A
Publication Date:
April 04, 2007
Filing Date:
October 12, 2001
Export Citation:
Assignee:
Minebea Co., Ltd.
International Classes:
C23G1/00; B08B3/12; C23G5/00; (IPC1-7): C23G1/00; C23G5/00
Domestic Patent References:
| JP6088265A | ||||
| JP2001131716A | ||||
| JP8089914A | ||||
| JP44021799Y1 |
Attorney, Agent or Firm:
Osamu Nakano