NDLI: Uniformity mechanism investigation of hardness penetration depth during grind-hardening process

Content Provider	Springer Nature Link
Author	Guo, Yu Xiu, Shichao Liu, Minghe Shi, Xiaoliang
Copyright Year	2016
Abstract	Grind-hardening is a new technology for steel part surface enhancing which uses thermal and mechanical composite effects on the parts in the grinding process. During the process, the workpiece surface generates hardened layer that improves the surface quality. Hardened layer may enhance fatigue strength, friction and wear properties, and corrosion resistance of parts significantly. Since component properties are influenced greatly by hardness penetration depth and its uniformity of parts, prediction of hardness penetration depth is significant to the practical engineering. First, the part is divided into cutting-in zone, middle zone, and cutting-out zone along length direction according to the characters of heat source strength changes. The mathematical models for segmented triangle heat source are carried out. Moreover, ANSYS is applied to simulate and analyze the distribution of temperature field and the change of instantaneous temperature in each zone of the grinding process. And the hardening penetration depth in each zone is predicted accordingly. Study of mechanism of depth uniformity is conducted emphatically in this paper. Results show that the change of heat intensity makes both ends of part not hardened during the grinding process. Hardening penetration depth increases gradually in the cutting-in zone and decreases gradually in the cutting-out zone. Meanwhile, the middle zone acquires deep and uniform hardened layer. Finally, comparison between predicted value and experimental value is carried on to verify the validity of source optimization model and reasonableness of prediction methods.
Starting Page	2001
Ending Page	2010
Page Count	10
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	89
Issue Number	5-8
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2016-08-05
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Grind-hardening Heat source optimization Grinding temperature field Mechanism of phase transformation Hardness penetration depth Depth uniformity Industrial and Production Engineering Media Management Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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