GEAR HAVING EXCELLENT SEIZING RESISTANCE

Title:

GEAR HAVING EXCELLENT SEIZING RESISTANCE

Document Type and Number:

WIPO Patent Application WO/2013/147259

Kind Code:

A1

Abstract:

This gear has a predetermined chemical component composition and has a texture of tempered martensite and/or tempered bainite and a steel material texture in which a spherical carbide is deposited in over 5% to 30% or less by area percentage, and the nitrogen concentration at a depth of 20 µm from the surface is 2.0-6.0%. Thus, a gear that achieves even better seizing resistance in a power transmission part subjected to high rotation and high slippage and using a low-kinematic-viscosity lubricating oil is provided.

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Inventors:

NAGAMATSU SAYAKA
SHINDO YOSUKE

Application Number:

PCT/JP2013/059738

Publication Date:

October 03, 2013

Filing Date:

March 29, 2013

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)

International Classes:

C22C38/00; C22C38/60; C23C8/26; C23C8/32; C23C8/38; C23C8/54; C21D1/06; C21D9/32

Foreign References:

JPH10183296A	1998-07-14
JP2008248282A	2008-10-16
JP2004052067A	2004-02-19
JP2005179704A	2005-07-07
JP2001165279A	2001-06-19

Attorney, Agent or Firm:

UEKI, Kyuichi et al. (JP)
Hisakazu Ueki (JP)

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