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Anna Lesnau

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Papers by Anna Lesnau

Research paper thumbnail of Rozkład naprężeń mechanicznych w łyżce o szerokości 500 mm, przeznaczonej do koparki podsiębiernej

Scientific Journal of Gdynia Maritime University, Sep 29, 2018

Research paper thumbnail of Analiza porównawcza produktów procesu pirolizy niskotemperaturowej wybranych tworzyw sztucznych w reaktorze niskociśnieniowym – badania wstępne

Scientific Journal of Gdynia Maritime University, Dec 29, 2018

Research paper thumbnail of The Use of Parametric Structure Modelling in the Design Process

Journal of KONES, Sep 1, 2018

Research paper thumbnail of Influence of Innovative Post-Weld Finishing Method on Bead Surface Quality

Materials

The article describes an innovative post-weld surface finishing method, which is characterized by... more The article describes an innovative post-weld surface finishing method, which is characterized by moving a specialized cutting tool along a butt weld. The aforementioned method is unique for the machining allowance, which is treated as the weld bead height and is removed in one step with one pass of the cutting tool. The tool is equipped on one side with linearly arranged tooth-shaped cutting elements, with the adjacent teeth height changing and increasing according to the direction of the feed. The non-standard geometry of the cutting tool enables the finishing of a heterogeneous post-weld surface with increased hardness. The results of studying the 2D profile parameters and the 3D stereometric characteristics of the surface roughness using the optical method are presented in the article. Test samples were made of S235JR steel and butt welded with the MMA, MIG, and TIG methods. Subsequently, the welding bead was ground and finished in accordance with the innovative method to flush ...

Research paper thumbnail of Preliminary Studies on the Purification of Bleaching Earth from Slack Wax Residues in the Adsorption Refining by Low-Temperature Pyrolysis Process

Journal of KONBiN

The essence of the low-temperature pyrolysis process presented below is the processing of contami... more The essence of the low-temperature pyrolysis process presented below is the processing of contaminated bleaching earth, resulting in a purified bleaching earth, high calorific oil with an average level of 45.5 MJ / kg and synthesis gas that can be used to heat the reactor. For research purposes, a proprietary low-pressure reactor with a system of direct cooling of hydrocarbon vapors was used. The main advantages of the presented method are the limitation of technological processes to a minimum and the ease of automation by reducing the entire cycle to one device.

Research paper thumbnail of An Alternative Method for Synthetic Polymers Waste Processing Using the Low Temperature Pyrolysis Process

Advances in Science and Technology Research Journal

Research paper thumbnail of The Use of Parametric Structure Modelling in the Design Process

Journal of KONES, 2018

Automation of processes related to design and manufacturing is one of the essential goals of most... more Automation of processes related to design and manufacturing is one of the essential goals of most manufacturing companies. The use of modern computer-aided design systems CAD allows partial automation of such processes. The parametric model can be built in some CAD systems. In the parametric model, selected dimensions are treated as control parameters. By changing the values of these parameters, we can control the remaining geometrical dimensions of the model. These dimensions can be associated with linear control parameters using mathematical relationships. Parameterization allows you to associate a geometric model with a mathematical model and allows you to automatically make changes to all elements associated with the currently modified parameter. When working on a non-parameterized model, the changes in the modelled object must be applied separately for each part and subassembly of which it is composed. In a parametric model, changing one parameter entails changes in other param...

Research paper thumbnail of Preliminary Studies on the Purification of Bleaching Earth from Slack Wax Residues in the Adsorption Refining by Low-Temperature Pyrolysis Process

Journal of Konbin, Dec 1, 2022

Research paper thumbnail of Comparative Analysis of Fuels Derived from PE Plastic Waste with a Mixture of Plastic Recycling Waste of Codes: 1, 2, 4, 5, 6 and 7 Based on Low-Temperature Pyrolysis

Journal of KONES, 2019

Thanks to their numerous advantages, plastics are becoming more and more widely used in all branc... more Thanks to their numerous advantages, plastics are becoming more and more widely used in all branches of industry. The quantities of products, their packaging and, consequently, the amount of synthetic polymer waste are steadily increasing, what poses a high risk to the environment due to their long decomposition time. To reduce waste production is practically impossible, therefore it is very important to constantly implement new and improve existing methods of waste treatment. The following article presents one of the alternative methods for synthetic polymer waste treatment, which is low-temperature pyrolysis. Two pyrolysis processes were carried out. During the first experiment a polyethylene plastic material was used, in the second experiment a mixture of typical household recycling waste of codes 1, 2, 4, 5, 6, and 7 were tested. During the thermal processing, the input material undergoes a chemical transformation due to breaking of long hydrocarbon chains. At the same time, hig...

Research paper thumbnail of Rozkład naprężeń mechanicznych w łyżce o szerokości 500 mm, przeznaczonej do koparki podsiębiernej

Scientific Journal of Gdynia Maritime University, Sep 29, 2018

Research paper thumbnail of Analiza porównawcza produktów procesu pirolizy niskotemperaturowej wybranych tworzyw sztucznych w reaktorze niskociśnieniowym – badania wstępne

Scientific Journal of Gdynia Maritime University, Dec 29, 2018

Research paper thumbnail of The Use of Parametric Structure Modelling in the Design Process

Journal of KONES, Sep 1, 2018

Research paper thumbnail of Influence of Innovative Post-Weld Finishing Method on Bead Surface Quality

Materials

The article describes an innovative post-weld surface finishing method, which is characterized by... more The article describes an innovative post-weld surface finishing method, which is characterized by moving a specialized cutting tool along a butt weld. The aforementioned method is unique for the machining allowance, which is treated as the weld bead height and is removed in one step with one pass of the cutting tool. The tool is equipped on one side with linearly arranged tooth-shaped cutting elements, with the adjacent teeth height changing and increasing according to the direction of the feed. The non-standard geometry of the cutting tool enables the finishing of a heterogeneous post-weld surface with increased hardness. The results of studying the 2D profile parameters and the 3D stereometric characteristics of the surface roughness using the optical method are presented in the article. Test samples were made of S235JR steel and butt welded with the MMA, MIG, and TIG methods. Subsequently, the welding bead was ground and finished in accordance with the innovative method to flush ...

Research paper thumbnail of Preliminary Studies on the Purification of Bleaching Earth from Slack Wax Residues in the Adsorption Refining by Low-Temperature Pyrolysis Process

Journal of KONBiN

The essence of the low-temperature pyrolysis process presented below is the processing of contami... more The essence of the low-temperature pyrolysis process presented below is the processing of contaminated bleaching earth, resulting in a purified bleaching earth, high calorific oil with an average level of 45.5 MJ / kg and synthesis gas that can be used to heat the reactor. For research purposes, a proprietary low-pressure reactor with a system of direct cooling of hydrocarbon vapors was used. The main advantages of the presented method are the limitation of technological processes to a minimum and the ease of automation by reducing the entire cycle to one device.

Research paper thumbnail of An Alternative Method for Synthetic Polymers Waste Processing Using the Low Temperature Pyrolysis Process

Advances in Science and Technology Research Journal

Research paper thumbnail of The Use of Parametric Structure Modelling in the Design Process

Journal of KONES, 2018

Automation of processes related to design and manufacturing is one of the essential goals of most... more Automation of processes related to design and manufacturing is one of the essential goals of most manufacturing companies. The use of modern computer-aided design systems CAD allows partial automation of such processes. The parametric model can be built in some CAD systems. In the parametric model, selected dimensions are treated as control parameters. By changing the values of these parameters, we can control the remaining geometrical dimensions of the model. These dimensions can be associated with linear control parameters using mathematical relationships. Parameterization allows you to associate a geometric model with a mathematical model and allows you to automatically make changes to all elements associated with the currently modified parameter. When working on a non-parameterized model, the changes in the modelled object must be applied separately for each part and subassembly of which it is composed. In a parametric model, changing one parameter entails changes in other param...

Research paper thumbnail of Preliminary Studies on the Purification of Bleaching Earth from Slack Wax Residues in the Adsorption Refining by Low-Temperature Pyrolysis Process

Journal of Konbin, Dec 1, 2022

Research paper thumbnail of Comparative Analysis of Fuels Derived from PE Plastic Waste with a Mixture of Plastic Recycling Waste of Codes: 1, 2, 4, 5, 6 and 7 Based on Low-Temperature Pyrolysis

Journal of KONES, 2019

Thanks to their numerous advantages, plastics are becoming more and more widely used in all branc... more Thanks to their numerous advantages, plastics are becoming more and more widely used in all branches of industry. The quantities of products, their packaging and, consequently, the amount of synthetic polymer waste are steadily increasing, what poses a high risk to the environment due to their long decomposition time. To reduce waste production is practically impossible, therefore it is very important to constantly implement new and improve existing methods of waste treatment. The following article presents one of the alternative methods for synthetic polymer waste treatment, which is low-temperature pyrolysis. Two pyrolysis processes were carried out. During the first experiment a polyethylene plastic material was used, in the second experiment a mixture of typical household recycling waste of codes 1, 2, 4, 5, 6, and 7 were tested. During the thermal processing, the input material undergoes a chemical transformation due to breaking of long hydrocarbon chains. At the same time, hig...

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