Affiliation:
1. „PRO-ZAP” Grupa Introl, Mechanical Design Department, 63-400 Ostrów Wlkp., Grabowska 47a, Poland
2. Opole University of Technology, Faculty of Mechanical Engineering, 45-001 Opole , St. Mikołajczyka 5, Poland
Abstract
Abstract
The purpose of this study is to form and test inseparable tight joints, commonly used in the construction of heat exchangers, by crimping operation on designed prototype stand. Crimped joints are made by tools in form of cones with two types of shapes, each of the designed tools have got identical forming angle. This study uses two types of connecting blocks and plates, differing in diameters of hole and flange. Elaboration contains a case study of joints being made by the stand, which in addition to the crimping operations for some cases were glued or brazed. The article presents the features of the formed joints, by examining them by destructive testing: Micrography, tensile strength test, and non-destructive testing: Leakage test. The examined elements have been made of aluminum 6060, which is well suited to indirect or direct operations of forming joints for all kinds of coolers or condensers. Elaborated tests and studies in this study allowed to state, that joining the connection block to plate with the small diameter, was more energy-consuming than in sample sets with bigger diameter, use of glue increasing the strength of the joints by 20%, significant strength increase can be obtained after mechanical clinching with brazing operation or modification of geometrical shape of the jaws
Reference16 articles.
1. [1] J. Varis, Economics of clinched joint compared to riveted joint and example of applying calculations to a volume product, Journal of MaterialsProcessing Technology, (2006), 172, 1, pp. 130-138.
2. [2] R.W. Maruda, G.M. Krolczyk, P. Nieslony, S.Wojciechowski, M. Michalski, S. Legutko,The influence of the cooling conditions on the cutting tool wear and the chip formation mechanism, Journal of Manufacturing Processes (2016)24, pp.107-115.
3. [3] G. Krolczyk, J. Królczyk, S. Legutko, A. Hunjet, Effect of the disc processing technology on the vibration level of the chipper during operations, Tehnički Vjesnik -Technical Gazette, (2014) 21, 2, pp. 447-450.
4. [4] C. Chen, X. Han, S. Zhao, F. Xu, X. Zhao, T. Ishida, Comparative study on two compressing methods of clinched joints with dissimilar aluminum alloy sheets, The International Journal of Advanced Manufacturing,(2017), 93, 5, pp.1929-1937.
5. [5] F.Lambiase,Joinability of different thermoplastic polymers with aluminium AA6082 sheets by mechanical clinching, The International Journal of Advanced Manufacturing Technology,(2015), 80, 9, pp.1995-2006.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献