Reason and Control of the Emergence of the Troostite in Sprocket Carburizing Quenching

In the process of the metallographic examination,Q235 B hot-rolled raw material appeared the troostite on the sub-surface of the sprocket after being carburized quenched. The binding force between the surface and the substrate is significantly reduced by this layer due to the microcracks at the junc...

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Bibliographic Details
Published in:Jixie chuandong
Main Authors: Liu Yi, Zhang Mengjiu, Pang Ningning
Format: Article
Language:Chinese
Published: Editorial Office of Journal of Mechanical Transmission 2018-01-01
Subjects:
Sprocket
Carburizing quenching
Troostite
Binding force
Fatigue strength
Online Access:http://www.jxcd.net.cn/thesisDetails#10.16578/j.issn.1004.2539.2018.05.030
Description
Summary:In the process of the metallographic examination,Q235 B hot-rolled raw material appeared the troostite on the sub-surface of the sprocket after being carburized quenched. The binding force between the surface and the substrate is significantly reduced by this layer due to the microcracks at the junction of the two.In addition,the impact resistance and fatigue strength of the sprocket are also affected. The reason for the formation of the troostite is found by the experiment and the improvement is conducted. The troostite produced in quenching is eliminated and the overall performance of the sprocket is enhanced.
ISSN:1004-2539

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