Ján Moravec
YOU?
Author Swipe
View article: Research into Driving Stability of an SUV–Trailer Combination for Driving Maneuvers by Simulation Computations
Research into Driving Stability of an SUV–Trailer Combination for Driving Maneuvers by Simulation Computations Open
Operation of vehicle–trailer combinations is currently popular throughout many countries. Connecting a trailer to a passenger car increases the car’s utility value because it is possible to transport more goods over shorter or longer dista…
View article: Influence of Strain Rate on the Strain-Induced Martensite Transformation in Austenitic Steel AISI 321 and Barkhausen Noise Emission
Influence of Strain Rate on the Strain-Induced Martensite Transformation in Austenitic Steel AISI 321 and Barkhausen Noise Emission Open
This study investigates the evolution of strain-induced martensite (SIM) and its effect on magnetic Barkhausen noise (MBN) in AISI 321 austenitic stainless steel subjected to uniaxial tensile testing. Using X-ray diffraction and the Barkha…
View article: Explozívne tvárnenie dielcov a jeho podstata
Explozívne tvárnenie dielcov a jeho podstata Open
The article focuses on explosive forming of metals, in this case pipes, where the text provides the necessary information about the process of this type of forming. In the second part, based on knowledge from the theory of metal forming, a…
View article: Tvárnenie plechu veľkou uvoľnenou energiou
Tvárnenie plechu veľkou uvoľnenou energiou Open
The paper analyzes an unconventional method of forming sheet metal parts with high energy release. Published diagrams and images together with a physical description of the process illustrate how this technology can be applied to form larg…
View article: Ručné obrábanie kovov pilovaním
Ručné obrábanie kovov pilovaním Open
The presented contribution focuses on the field of manual metal processing using filing technology. Knowledge about the production of files, the geometry of file teeth are presented. Some selected findings from the subject area are present…
View article: Opotrebenie strižníkov a ich ostrenie
Opotrebenie strižníkov a ich ostrenie Open
The paper focuses on the issue of shear wear. Theoretical foundations are presented and an analysis of the issue of sharpening the active parts of the shear tool is also described. Sharpening the shears themselves is an important part of r…
View article: Influence of Strain Rate on Barkhausen Noise in Trip Steel
Influence of Strain Rate on Barkhausen Noise in Trip Steel Open
This paper deals with Barkhausen noise in Trip steel RAK 40/70+Z1000MBO subjected to uniaxial plastic straining under variable strain rates. Barkhausen noise is investigated especially with respect to microstructure alterations expressed i…
View article: Research of Casting and Solidification of Steel Ingots by Application of Low-Melting Materials
Research of Casting and Solidification of Steel Ingots by Application of Low-Melting Materials Open
The article describes the simulation of the casting of the low-melting material stearin into a mold, which serves as a real simulation basis for monitoring the displacement during the solidification of steel ingots. The physical properties…
View article: Magnetic forming with heat in a magnetic field
Magnetic forming with heat in a magnetic field Open
The article focuses on the application of a magnetic field in the forming of low-carbon steel castings. The original solution of the forming device, which was used in the experimental works, is presented. The results of the experimental wo…
View article: Aplikácia solenoidu pri magnetickom tvárnení
Aplikácia solenoidu pri magnetickom tvárnení Open
In the contribution, the theoretical part points out the known starting points for calculating the inductance of a long cylindrical coil. In the practical part, the method of application of magnetic forming in the production of tins in lea…
View article: Influence of Strain Rate on Plastic Deformation of the Flange in Steel Road Barrier
Influence of Strain Rate on Plastic Deformation of the Flange in Steel Road Barrier Open
This study investigates the influence of strain rate on plastic deformation developed in the flange of a steel road barrier. This effect can be investigated by the use of the uniaxial tensile test. It was found that the strain rate increas…
View article: Opotrebovanie strižníkov v strihacom nástroji
Opotrebovanie strižníkov v strihacom nástroji Open
The paper describes the issue of wear of shears in shearing tools. It is pointed out to theoretical knowledge from the issue and also in experimental, or the practical part contains specific knowledge about the wear of the active surfaces …
View article: Tvárnenie skla v jednoduchom tvárniacom nástroji
Tvárnenie skla v jednoduchom tvárniacom nástroji Open
The contribution presents the analysis and issues of glass forming in a forming tool with external heating. The necessary theoretical knowledge and properties of glass, which are necessary for solving the design of the forming tool, are li…
View article: Rovnanie plechu bodovým ohrevom
Rovnanie plechu bodovým ohrevom Open
The contribution is devoted to the issue of material alignment. The theoretical description and essence of straightening by local heating is presented. Mechanical methods of leveling the material are also covered. In the experimental part,…
View article: The effect of borides on the mechanical properties of tool steels and sintered carbides
The effect of borides on the mechanical properties of tool steels and sintered carbides Open
The presented article is devoted to the effect of borided surface layers on tool steel 19 541 and sintered carbides of type M1 and M2. The article describes the method of boriding sintered carbides and Cr-Mo-V steel. The aim of this work i…
View article: An Application of a Magnetic Impulse for the Bending of Metal Sheet Specimens
An Application of a Magnetic Impulse for the Bending of Metal Sheet Specimens Open
Currently, classical methods for the creation of various shapes and bending angles of metal sheet parts are applied. They are represented by the so-called all-metal forming tools. Non-standard methods, which in some cases exceed convention…
View article: Study of Coatings Intended for Active Parts of Forming Tools Produced by Powder Metallurgy
Study of Coatings Intended for Active Parts of Forming Tools Produced by Powder Metallurgy Open
The article deals with new types of coatings and their mechanical properties. CTRN and CRONAL are newly developed coatings intended for active parts of forming tools. Their behavior and mechanical properties are still under investigation. …
View article: Application of Hydrostatic Knowledge in the Construction of Forming Tools
Application of Hydrostatic Knowledge in the Construction of Forming Tools Open
Not only traditional (conventional) but also non-traditional (unconventional) methods are used in metal forming. Unconventional methods will, as it turns out, have more scope than in the past, especially in relation to environmental constr…
View article: FORMING CAVITIES IN SAMPLES BY APPLYING A MAGNETIC SHOCK
FORMING CAVITIES IN SAMPLES BY APPLYING A MAGNETIC SHOCK Open
The papers focuses on the formation of cavities in metal samples.The main parts is the results of experimental work, which are presented in the form of summarized knowledge about the process of forming cavities.Lead plates were used as sam…
View article: Forming and Heat Treatment of Modern Metallic Materials
Forming and Heat Treatment of Modern Metallic Materials Open
Forming and heat treatment of metals are crucial technologies for final metallic material processing at the end of production line, before they are incorporated into the final products or crucial components of more and more demanding syste…
View article: Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves
Investigation of Forging Metal Specimens of Different Relative Reductions Using Ultrasonic Waves Open
Forgings produced in industry are an irreplaceable basis for subsequent elaborating on machine tools. The quality of the semi-finished product produced by forging is a necessary prerequisite for ensuring the final quality of the final prod…
View article: Unconventional Method of Production of Cavities in full material on a MachinE
Unconventional Method of Production of Cavities in full material on a MachinE Open
The paper describes the theoretical knowledge about the process of forming holes in the solid material.The own design solution of an experimental device for forming cylindrical sleeves is presented.The results obtained in experimental work…
View article: Analysis of the Drawing Process of Small-Sized Seam Tubes
Analysis of the Drawing Process of Small-Sized Seam Tubes Open
This article is focused on an analysis of factors negatively affecting the tube production process of tubes made from austenitic stainless steel with a very small diameter of ϕ 0.34 mm. The analysis was concentrated on factors that affect …
View article: The Relationship between Nil-Strength Temperature, Zero Strength Temperature and Solidus Temperature of Carbon Steels
The Relationship between Nil-Strength Temperature, Zero Strength Temperature and Solidus Temperature of Carbon Steels Open
The nil-strength temperature, zero strength temperature and solidus temperature are significant parameters with respect to the processes of melting, casting and welding steels. With the use of physical tests performed on the universal plas…
View article: Application of Knowledge of Fluid Mechanics in the Field of Design of Forming Tools
Application of Knowledge of Fluid Mechanics in the Field of Design of Forming Tools Open
The paper deals with the construction of a hydrostatic molding tool. The theoretical part presents the necessary knowledge about forming in liquid media. The experimental part presents the construction of a forming tool for drawing using a…
View article: Production of cavities with application of free core solenoid
Production of cavities with application of free core solenoid Open
The paper deal with the unconventional method of creating cavities in samples.There is also described the principle of system for creating experimental samples.In other parts is work focus on free-core forming of cavities in lead samples.B…
View article: Impact of Technological Parameters of CO2 Laser Cutting on oxide adhesion forces on the Base Material
Impact of Technological Parameters of CO2 Laser Cutting on oxide adhesion forces on the Base Material Open
The setting of laser cutting technology parameters affects the resulting state of the final surface. When cutting low-carbon steel using conventional parameters - oxidative cutting, surface oxide layers are formed on the cutting edges resu…
View article: Influence of Components Bending on the Consecutive Plasma Nitridation and Barkhausen Noise Emission
Influence of Components Bending on the Consecutive Plasma Nitridation and Barkhausen Noise Emission Open
This paper deals with the non destructive evaluation of components after the plasma nitridation via the Barkhausen noise techniques. Effect of different surface states before the plasma nitriding is studied via the non destructive Barkhaus…
View article: SHEARING OF SHEET METAL INSIDE THE TOOL WITH THE INTERNAL HEATING CUTTING PUNCH
SHEARING OF SHEET METAL INSIDE THE TOOL WITH THE INTERNAL HEATING CUTTING PUNCH Open