钢轨打磨工艺参数对钢轨表面粗糙度和表面硬度的影响分析

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One Two
Introduction Experimental method and equipment
Three
Four
Experimental programs
Conclusion
Introduction
Rill grinding(钢轨打磨) Rail grinding is the process of material removal, removal of
Experimental method and equipment
Method This paper aims at reducing the lack of knowledge concerning
interactions between the rail grinding parameters, grinding
s
Surface roughness
ae
f
Ra Rz
Feed speed
Surface layer hardness
'' EC M max
Experimental method and equipment
Method Required dimensional and shape accuracies for rails after
defects and repair of the profile of the top of the rail. With this process, damaged material layers shall be removed and the required dimensional and shape accuracBaidu Nhomakorabea has to be ensured.
Experimental method and equipment
Equipment
The test rig for rail grinding was developed on a face and profile
grinding machine Profimat 408of Blohm Jung GmbH.
tool specifications and the topology of the rail surface as well as damage of the rail surface layer.
Factors：
Wheel peripheral speed Depth of cut
Effects：
Experimental programs
Influence of grinding parameters on the process characteristics and rail surface layer
Conclusion
The main findings of the technological investigations are listed below: 1. The influence of different combinations of process parameters on the processing results is significant. 2. Target values of surface roughness were achieved with all tested grinding processes. 3. Different hardness profiles of the surface layer, caused by different grinding processes, were clearly shown. 4. Interactions between process parameters, process character- istics und processing results are qualitatively described.
grinding.
The requirements concerning processes and grinding tools for rail grinding are missing. Maximum acceptable values of surface layer damage are also not given.
Experimental programs
Influence of grinding parameters on the surface quality
Experimental programs
Correlation between case hardening depth and Barkhausen noise
Influence of rail grinding process parameters on rail surface roughness and surface layer hardness
钢轨打磨工艺参数对钢轨表面粗糙度和表面硬度的影响
Name Number
吴月峰 16125973
Contents