Diagnosis of White Spot Defects Drived from Gear Wheel Carbonization and its Corresponding Measures

Abstract:

Article Preview

To account for the adverse effects of white spot defects onto the performance of gear wheel, physicochemical properties are studied based on the conducted surface carbonization experiment. Further, the geneses for white spot defects are discussed and the solutions to this problem are also clarified. It is found from the physicochemical analysis that the white spot defects occurred on gear surface can be classified into two parts: a) the ‘single white spot’, which originates from the sick point produced during the carbonization process, and b) the ‘multiple continuous spots’, which are produced by either the non-uniformity surface carbonization or the grinding burn or otherwise the micro ecarbonization caused by overheat on gear surface. For different white spot defects, different strategies should be employed: ultrasonic cleaning technique should be performed for the single white spot case, while for the ‘multiple white spot’ case, not only should the vacuum carburizing technique be employed to avoid surface non-uniformity of carbonization, but also vacuum oil quenching are needed to clear up the defects induced by micro decarbonization.

Info:

Periodical:

Advanced Materials Research (Volumes 418-420)

Edited by:

Xianghua Liu, Zhengyi Jiang and Jingtao Han

Pages:

760-764

Citation:

H. L. Liu and M. X. Liu, "Diagnosis of White Spot Defects Drived from Gear Wheel Carbonization and its Corresponding Measures", Advanced Materials Research, Vols. 418-420, pp. 760-764, 2012

Online since:

December 2011

Export:

Price:

$41.00

[1] Shizhang Tan, Lianxi Zhang, Meisheng Liu. Heat Treatment Process. Aviation Industrial Textbook evaluating and editing Committee for Technicians, 2004. [In Chinese].

[2] Guomin Chen. Steel and Heat Treatment Quality Control of Gear (ii). Automobile Technology & Material, 2003, (3): 10-13. [In Chinese].

[3] Lifang Xia. Heat Treatment Process for Metals. Publishing House of Haerbin Institute of Technology, 1986. [In Chinese].

[4] Henglai Jinger, et al. Review of Carbonization, China Academic Journal Electronic Publishing House, 2007, (7): 18-24. [In Chinese].

[5] Jiandong Luo. The Cause and Solving Strategy of White Spooting Appearing in Nickel Plating. Plating and Finishing, 2004, (26): 26-28. [In Chinese].

[6] Shuxian Wu. Improvement of Heat Treatment Process for Driving Bevel Gear. Metal Heat treatment, 2005, (30): 59-61. [In Chinese].