Open Access Conference Proceedings

Abstract: The authors of this paper present assumptions and preliminary results of experimental investigations and FEM numerical simulations of laser-mechanical hybrid forming process of thin-walled elements. An experimental stand was designed and manufactured to investigate and develop new methods of bending of thin-walled tubes and conical diffusers, which are used in the construction of aircraft engines. [..] Read more

Abstract: The article presents results of investigation of structure and properties of low-carbon steel after application of Equal Channel Angular Pressing (ECAP) at the temperature of approx. 290°C. [..] Read more

Abstract: The article deals with the matter of development of a prototype of fatigue test bench for fork type forging, with particular emphasis on the measurement-archiving application that allows to determine magnitude of moment of force and rotation angle in time. These forgings are used for steering columns and are a critical element of car safety. [..] Read more

Abstract: It is commonly known that shear strain occurring in asymmetric rolling process plays a very effective role to improve mechanical properties of metallic materials especially in the production of sheet metal. In the article preliminary research results of deformation in asymmetric rolling process influence on equivalent deformation distribution and austenite microstructure changes are presented. [..] Read more

Abstract: The influence of two variants of initial soaking at 1100 °C / 2 h and 1150 °C / 2 h and parameters of hot plastic deformation on the deformability of an A-286 type superalloy have been presented. The hot deformation characteristics of alloy were investigated by hot torsion tests. [..] Read more

Abstract: The ultra-fine grained austenitic AISI 304 stainless steel sheets were prepared using various rolling techniques. The room temperature symmetric rolling (SR) as well as the sub-zero temperature cryorolling (CR) were performed. [..] Read more

Abstract: Intensity of structural changes during forging is usually determined in dependence on the forging ratio. Forging ratio at elongation is most often calculated with use of simple relations, which are based on the change of cross-section of the forged pieces. [..] Read more

Abstract: Achieving a very high degree of deformation in sheet metal forming is a very complex problem. It is the main prerequisite for achieving an ultra-fine grain structure in the material. [..] Read more

Abstract: Over the last few years, the great attention was paid to materials with grain size of diameter smaller than 1 µm. These materials were classified as Ultra-Fine Grained (UFG) materials with diameter of grains of the order of 100 to 1000 nm and nano-materials (NC) with mean diameters of grains smaller than 50 nm. [..] Read more

Abstract: The paper presents the characteristics and possibilities of a mill line based on a Duo D-300 mill located at the Institute of Metal Forming and Safety Engineering at the Czestochowa University of Technology. In 2012 year has been started new laboratory semi-industrial rolling mill. [..] Read more

Abstract: Numerical simulations are used for process planning of various manufacturing technologies and methods. These simulations are also used in the automotive industry, where currently sharp edges and geometries of small dimensions are used on various car-body parts to fulfil a design function or a function of a specific character. [..] Read more

Abstract: Over the last few years, the great attention was paid to materials with grain size of diameter smaller than 1 µm. These materials were classified as Ultra-Fine Grained (UFG) materials with diameter of grains of the order of 100 to 1000 nm and nano-materials (NC) with mean diameters of grains smaller than 50 nm. [..] Read more

Abstract: The paper describes the mechanism of destruction of forging die used for plastic working processes by die forging on hammers. The test material was a matrix after exploitation for plastic processing using the hot forging method, made of WNLV grade material. [..] Read more

Abstract: Accumulative roll bonding (ARB) is one of the severe plastic deformation methods of producing ultrafine grained laminated metal composites (LMCs). This paper is focused on LMCs consisting of dissimilar bimetal system of aluminum alloys AA1050/AA6061. [..] Read more

Abstract: Modern approaches and materials must be used to achieve mass reduction of car body parts. Important step is to depict processing of these materials in detail. [..] Read more

Abstract: Induction quenching can be used for hardening the outer surface of large parts, achieving superior mechanical properties, with the advantage that heating is not required to the whole part. Induction heating is a complex combination of electromagnetic, heat transfer, and metallurgical phenomena involving factors such as: current, voltage, frequency, applied power, scanning speed, heating period, and many more. [..] Read more

Abstract: The article deals with the evaluation of the functional surfaces of the ball valve body. It deals with the finishing methods when machining parts of the ball valve assembly. [..] Read more

Abstract: Work is aimed at three laboratory manufactured high strength manganese steels after cast, rolling and aging process (at 500 °C after 6, 12, 30 and/or 60 minutes of dwell). Micro-hardnesses (HV0.2) as well as potential k-carbides formation of micro- and/or nano-size and microstructures characters of all treatment modes are mutually compared. [..] Read more

Abstract: The purpose of this paper is to describe the microstructure of welded joints produced by the Plasma+MAG method of S700 MC steel (high strength Re = 700 MPa). Welded joints of thermomechanical steel have been made with different values of heat input. [..] Read more

Abstract: 9 % Cr martensitic steels are perspective candidates for elements of boilers, steam pipes and tubes for novel fossil fuel power plants which are able to work at ultra-supercritical parameters of steam (T = 600 - 620 °C, P = 25 - 30 MPa). Crept structure and creep properties of 0.1С-9Сr-3Co-3W-VNbBN steel after creep tests at 650 °C under a stress of 100 – 220 MPa with a step of 20 MPa were studied. [..] Read more