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Mahagaonkar, S. B.
- Influence of Shot Peening Parameters on Surface Roughness and Micro Hardness Using DOE Technique
Abstract Views :168 |
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Authors
Affiliations
1 Dr. BATU, Lonere (MS), IN
2 Mech. Engg. Dept., Dr. BATU, Lonere (MS), IN
1 Dr. BATU, Lonere (MS), IN
2 Mech. Engg. Dept., Dr. BATU, Lonere (MS), IN
Source
Manufacturing Technology Today, Vol 6, No 2 (2007), Pagination: 10-14Abstract
An engineered shot peened surface has potential surface applications. Peaks of the shot peening dimples helps to lower coefficient of friction and in some applications "valleys" of the peening dimples offer lubricant retentions that are not present in a smooth surface. Wear resistance of the component can be increased by controlling surface roughness, whereas by controlling surface hardness the fatigue life will increase due to the increase in cold work. Depending on the applicability of the component for fatigue or wear condition, the shot peened textured surface can be controlled, by setting the peening parameters based on the effect of individual, as well as interaction effect of the parameters. In this paper, full factorial Taguchi's 2k DOE technique was used to analyze surface roughness and micro hardness, on the specimens made of medium carbon steel En8, using air blast type shot peening machine. This investigation examines the respective effects of influencing parameters such as pressure, shot size and the exposure time at their two different levels on surface roughness and hardness. After going through confirmation test the analysis reveals the right combination of the parameters for better process control. This technique sets an example for the other applications in the industries to reduce the performance variation and to improve quality, performance, reliability and profits.- Some Investigations into Low Plasticity Burnishing of AISI 316L
Abstract Views :163 |
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Authors
Affiliations
1 Dr. Babasaheb Ambedkar Technological University [Dr. B.A.T.U.], Lonere-402103 (M.S.), IN
1 Dr. Babasaheb Ambedkar Technological University [Dr. B.A.T.U.], Lonere-402103 (M.S.), IN
Source
Manufacturing Technology Today, Vol 6, No 5 (2007), Pagination: 17-21Abstract
Results of the latest research indicate that the life and the reliability of machine components are affected greatly by the varieties of surface enhancement technologies applied and also by the sequence and conditions of their application. Low Plasticity Burnishing (LPB) is a new method of surface enhancement, which can provide deep stable surface compression for improved surface integrity characteristics. The present study focuses only on the surface roughness and surface micro-hardness aspects using full factorial design of experiments. After studying the effects of various parameters of the LPB process on AISI 316, favourable and optimum conditions could be predicted and tailored for different requirements. The parameters that have greater influence on the surface roughness in the decreasing order of importance are number of passes, ball diameter, pressure, and speed, whereas ball diameter, speed, pressure, and number of passes is the order for the surface hardness. In order to minimize the roughness of the surface it is advisable to set the speed, pressure, number of passes at high level and ball diameter at low level looking into the strong interaction that pressure is involved with speed and number of passes. After analysing the interaction effects of parameters on the surface hardness, it is advisable to set the speed, number of passes at lower level and ball diameter, burnishing pressure at higher level to maximize the surface hardness.- Effect of a Newly Designed L.P.B. Tool on the Surface Enhancement of AISI1045:A Study
Abstract Views :161 |
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Authors
Affiliations
1 Dr B.A.T.U., Lonere, IN
2 Mechanical Engg. Dept., Dr. Babasaheb Ambedkar Technological University [Dr B.A.T.U.] Lonere - 402103 (M.S), IN
1 Dr B.A.T.U., Lonere, IN
2 Mechanical Engg. Dept., Dr. Babasaheb Ambedkar Technological University [Dr B.A.T.U.] Lonere - 402103 (M.S), IN