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Testing of formed joints on a designed prototype station

Wróbel Nikodem, Franka Mateusz, Rejek Michał, Li Zhixiong, Królczyk Jolanta, Śliwiński Marcin

International Journal of Applied Mechanics and Engineering

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2022

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Vol. 27, no. 3

212--223

EN

In presented paper perform prototype machine which consist of two independent motion axis equipped with force sensors. Used force sensors provide control of forming connection. Special design of the machine provide to make tensile strength test on it. Prepared nine samples to carried out tests, which revealed the influence between change of jaws displacement during plastic deformation and strength of that joint. Created prototype stand base on two independent drive units allow to make that connection possible. Choosing right parameters leads to generate joints which are more than twice stronger than basic sample reaching more than 920N.

2

Testing of beveled crimp connections made on a prototype stand

Wróbel N., Rejek M., Królczyk B.

Archives of Mechanical Technology and Materials

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2018

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Vol. 38

15--22

EN

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.

3

Wytwarzanie korpusów metodą wyciskania na gorąco

Stępień J., Materniak J., Kaczmarek Z., Szałata D.

Prace Instytutu Metalurgii Żelaza

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2008

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T. 60, nr 2

20-24

PL

Celem badań było opracowanie założeń do technologii wyciskania na gorąco korpusów ze stali 45H1, przeznaczonych na wyroby specjalne dla przemysłu obronnego. Przedstawiono założenia technologiczne wykonania korpusów, obejmujące parametry nagrzewania wsadu, wyciskania oraz obróbki cieplnej odkuwek. Przeprowadzono analizę możliwości zaadaptowania istniejących urządzeń w FPS do budowy stanowiska prototypowego do wyciskania korpusów. Opracowana technologia zapewnia uzyskanie wymaganych właściwości mechanicznych: Rm min 1006 MPa, Z min 35% i KCU min 50 J/cm2.

EN

The purpose of the research was to develop the technological assumptions for hot extrusion of bodies from 45H1 steel for special products in the defence industry. The technological assumptions for making bodies, including the parameters of charge heating, extrusion and heat treatment of forgings, were presented. The possibility to adapt the equipment existing in FPS for construction of the prototype body extrusion stand was reviewed. This technology ensures obtaining the reguired mechanical properties: Rm min 1000 MPa, Z min 35% and KCU min 50 J/cm2.

4

Prototypowe stanowisko do plazmowego topienia metali

Modrzyński A., Grześkowiak K., Namyślak R., Niewiedział R.

Krzepnięcie Metali i Stopów

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2000

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R. 2, nr 44

489--495

PL

W artykule przedstawiono budowę i dokonano charakterystyki elementów składowych prototypowego stanowiska do topienia metali przy wykorzystaniu jako źródła ciepła plazmy niskotemperaturowej generowanej w warunkach obniżonego ciśnienia. Podano wyniki wstępnych badań parametrów pracy stanowiska uzyskane podczas topienia czystej miedzi i niklu. Prezentowane stanowisko docelowo przeznaczone jest do topienia tytanu i jego stopów w tyglu „garnisażowym”.

EN

The characteristic elements of structure and the construction of prototype stand for vacuum melting of metals with application of low temperature plasma have been described in this paper. Parameters of testing melts of pure cooper and nickel have been presented as well. This stand will be using by authors for skull melting titanium and titanium alloys in a next stage.