Study on the Influence of Water Jet Modification Process on Carburized Steel Round Bars
[1]Ma Yongtao,Anlele,Zhang London,et al.Study on the Influence of Water Jet Modification Process on Carburized Steel Round Bars[J].Journal of Zhengzhou University (Engineering Science),2020,41(01):91-96.[doi:10.13705/j.issn.1671-6833.2019.04.018]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
41卷
Number of periods:
2020 01
Page number:
91-96
Column:
Public date:
2020-03-10
- Title:
- Study on the Influence of Water Jet Modification Process on Carburized Steel Round Bars
- Keywords:
- post-mixed water jet peening 18CrNiMo7-6round bar samplesurface modificationresidual stress
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2019.04.018
- Abstract:
- The surface modification process of 18CrNiMo7-6 gear carburized steel round bar samples by post-mixed water jet peening was studied. Under the condition of satisfying the full coverage of water jet blasting on the circumferential surface of the sample, the single factor experiment was used to study t he effect of sample rotation speed, nozzle moving speed, high pressure water jet pump pressure and number of treatments on the surface topography, surface roughness, surface residual stress and hardness of the sample material, and use super depth of field three-dimensional microscope, three-dimensional surface topography , X-ray residual stress analyzer, HV-1000 microhardness tester and so on to measure t he above results .The experimental results show that after the post-mix ed water jet, the projectile and water will bring certain erosion and wear on the surface of the sample, and the surface morphology of the sample will be changed. The surface roughness, surface residual stress and hardness of the sample decrease with the increase of the sample rotation speed and the nozzle movement speed, and increase with the increase of the pump pressure and the number of treatments when the sample rotation speed n=100r/m in, the nozzle movement speed v=50mm/min, the pump pressure P=300MPa, the number of trea tments N=1, the maximum residual stress is about -1176.25 MPa, and the maximum hardness is 64HRC, which is 6.7% higher than the original sample.
- References:
- -
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Last Update:
2020-02-22