RESEARCH PAPER
Identification of surface stress in the exhaust system pipe made by hydroforming technology based on diffractometric measurements
1
Department of Production Engineering and Materials Technology Czestochowa University of Technology Armii Krajowej 19 str., 42-200 Czestochowa, Poland
Publication date: 2019-12-31
Eksploatacja i Niezawodność – Maintenance and Reliability 2019;21(4):562-566
KEYWORDS
ABSTRACT
In the work identificaton of surface stresses in the exhaust pipe made of Cr-Ni steel shaped with hydroforming technology. Stresses
were determined by the non-destructive x-ray method sin2
ψ. A complex state of tensile stresses with values in the range of 69÷240
MPa for circumferential stresses and 26÷290 MPa for longitudinal stresses was found on the surface of the pipe. The distribution
of stresses on the circumference and length of the pipe was analyzed on the basis of coefficients of variation and wall thickness.
A relationship was found between the value of surface stress and the wall thickness of the pipe. The highest stresses occurred in
the areas of the pipe where the thickness of the wall was reduced the most. In the central part of the pipe, where the wall thickness
reduction was the smallest, the stresses were also the smallest, but they were characterized by the highest dispersion of value. The
distribution of surface stresses determined by diffractometric method was compared with the model of deformation of the pipe
generated numerically
REFERENCES (20)
1.
Alaswad A, Benyounis K Y, Olabi A G. Tube hydroforming process: a reference guide. Materials and Design 2012; 33: 328-339, https://doi.org/10.1016/j.matd....
2.
Baczmański A, Wierzbanowski K, Lipiński P. Determination of Residual Stresses in Plastically Deformed Polycrystalline Material. Materials Science Forum 1994; 157-162: 2051-2058, https://doi.org/10.4028/www.sc....
3.
Bahman K. Trends for stainless steel tube in automotive applications. The Tube & Pipe Journal, September 13, 2005 (thefabricator.com).
4.
Brytan Z. Stainless steel in the automotive industry (in Polish). STAL Metale & Nowe Technologie 2013; 11-12: 14-19.
5.
Chałupczak J. Hydromechanical spreading in application to the formation of tees and X-pieces (in Polish). Works of the Kielce University of Technology. Mechanics; 39. Habilitation dissertation. Kielce, 1986.
6.
Gronostajski Z, Kuziak R. Metallurgical, technological and functional foundations of advanced high-strength steels for the automotive industry (in Polish). Works of the Institute of Ferrous Metallurgy 2010; 22-26.
7.
Hashemi R, Assemoiur A, Masourni E, Abad K. Implementation of the forming limit stress diagram to obtain suitable load path in tube hydroforming considering M-K model. Materials & Design 2009; 30(9): 3545-3553, https://doi.org/10.1016/j.matd....
8.
ISSF International Stainless Steels Forum. Stainless Steel Consumption Forecast, October 2017, (http://www.worldstainless.org/...) 05.12.2018.
9.
Kocańda A, Sadłowska H. Automotive component development by means of hydroforming. Archives of Civil and Mechanical Engineering 2008; 8(3): 55-69, https://doi.org/10.1016/S1644-....
10.
Koç M. An overall review of tube hydroforming (THF) technology. Journal of Materials Processing Technology 2001; 108: 384-393, https://doi.org/10.1016/S0924-....
11.
Koç M (Ed.). Hydroforming for Advanced Manufacturing. Woodhead Publishing Limited England, and CRC Press USA, 2008, https://doi.org/10.1533/978184....
12.
Kucharska B, Krzywiecki M. Stresses in a Cr-Ni superficial steel layer based on x-ray measurements and electropolishing Solid State Phenomena 2015; 223: 348-354, https://doi.org/10.4028/www.sc....
13.
Kucharska B, Wróbel A, Kulej E, Nitkiewicz Z. The X-ray measurement of the thermal expansibility of Al-Si alloy in the form of cast and a protective coating on steel. Solid State Phenomena 2010; 163: 286-290, https://doi.org/10.4028/www.sc....
14.
14 Miłek T. Variations of wall thickness in the sections of hydromechanically bulged copper cross joints. Eksploatacja i Niezawodnosc - Maintenance and Reliability 2003; 2(18): 45-48.
15.
Morphy G. Pressure-sequence and high pressure hydroforming: Knowing the processes can mean boosting profits. The Tube & Pipe Journal, September/October 1998 (thefabricator.com, February 2001).
16.
Skrzypek S J, Witkowska M, Kowalska M, Chruściel K. The non-destructive X-Ray methods in measuring of some material properties (in Polish). Hutnik-Wiadomości Hutnicze 2012; 79(4): 238-246.
17.
Susceptibility of stainless steels to plastic working. Euro Inox, Series: Materials and applications. Book No. 8, 2008.
18.
Wróbel-Knysak A, Kucharska B, The abrasion of Al-Si coatings with different silicon crystal morphology used in car exhaust systems. Tribologia 2016; 5: 209-218, https://doi.org/10.5604/01.300....
19.
Xianfeng Chen, Zhongqi Yu, Bo Hou, Shuhui Li, Zhongqin Lin. A theoretical and experimental study on forming limit diagram for a seamed tube hydroforming. Journal of Materials Processing Technology 2011; 211(12): 2012-2021, https://doi.org/10.1016/j.jmat....
20.
20 Kumbár V, Votava J, Numerical modelling of pressure and velocity rates of flowing engine oils in real pipe. Eksploatacja i Niezawodnosc - Maintenance and Reliability 2015; 7(3): 422-426, https://doi.org/10.17531/ein.2....
CITATIONS (1):
1.
Exhaust system piping made by hydroforming: relations between stresses, microstructure, mechanical properties and surface
Barbara Kucharska, Oskar Moraczyński
Archives of Civil and Mechanical Engineering
Barbara Kucharska, Oskar Moraczyński
Archives of Civil and Mechanical Engineering
| eISSN: | 2956-3860 |
| ISSN: | 1507-2711 |
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