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1
Content available MIG welding of austenitic 316L steel used in means of transport
Szczucka-Lasota Bożena, Węgrzyn Tomasz
Zeszyty Naukowe. Transport / Politechnika Śląska
|
2022
|
z. 116
247--256
EN
The austenitic 316L steel (1.4401) is an important stainless material used to build various means of transport. Austenitic steel has high resistance to atmospheric corrosion. The austenitic steel is treated as a good weldable material, although cracks are possible. This paper analyses the influence of various MIG welding parameters on the creation of correct joints used in the stainless steel structures of mobile platforms elements, as an example of welding structures, in various means of transport. Various tests verifying the mechanical properties of MIG welds, including non-destructive tests, tensile strength and hardness tests, were carried out. This article aims to show how important and complex the task is to select the correct welding parameters for elements of means of transport made of austenitic steel on the example of elements of mobile platforms.
2
Content available Improvement of the mechanical properties of mobile platform stainless construction elements
Szczucka-Lasota Bożena, Węgrzyn Tomasz
Transport Problems
|
2022
|
T. 17, z. 4
91--102
EN
Stainless steel could be treated as the main material used to construct various means of transport, including mobile platforms and tank trucks. An austenitic steel known as 316L steel (1.4401) has high resistance to atmospheric corrosion, natural waters, water vapor, alkaline solutions, and acids, even at elevated temperatures. This steel is weldable, although it is also prone to various types of welding cracks. Many factors influence the quality and mechanical properties of a joint. The most significant of these is the appropriate selection of welding parameters, which should be determined precisely and separately for each type of sheet, depending on its thickness and geometric features. The aim of the present article is to study the influence of main TIG (Tungsten inert gas) welding parameters on the creation of proper joints used in the construction of mobile truck platforms or tank trucks. The proper selection of parameters enables the production of welds with good functional properties. A novelty of this article is the proposal to weld each layer of a thick joint with different parameters, which has an important influence on the mechanical properties of the joint. It is expected that the new material and technological solution will yield a joint with good corrosion resistance and increased mechanical properties. This is important in the responsible construction of means of transport, using the example of mobile platforms and tank trucks. Different tests verifying the properties of joints, including non-destructive testing, tensile strength tests, and fatigue tests, as well as a hardness probe, were applied.
3
Content available Mixed welding of the mobile construction platform in the automotive industry
Węgrzyn Tomasz, Szczucka-Lasota Bożena, Piwnik Jan, Jurek Adam, Wilczyński Krzysztof Ireneusz
Transport Problems
|
2021
|
T. 16, z. 1
29--38
EN
This paper examines the possibility to improve mixed weldability of pins to mobile platforms. There is an increasing demand for mixed joints made of hard-weldable steel used in civil engineering and the automotive industry. A good example of this is welding of movable platform elements such as a pin to arm joints. The pin is very often made of yield structural steel S690 QL (1.8928), while the arm of the movable platform is mainly made of DOCOL 1400M steel from the AHSS group (advanced high-strength steel). This kind of joint is not easy to manufacture due to the different chemical compositions and thicknesses of both grades of steel. The difference in the thickness of welded elements creates an additional difficulty. The main aim of this article is to determine the most appropriate welding parameters and select additional materials to obtain the correct joint with good mechanical properties, free from welding defects and incompatibilities. This article examines whether the application of micro-jet cooling technology during the welding process might help to overcome these issues. For the first time, micro-jet cooling was not used to weld these grades of steel. The welding parameters and the micro-jet cooling parameters were investigated.
4
Content available Welding of pins to mobile platforms arms
Szczucka-Lasota Bożena, Węgrzyn Tomasz, Łazarz Bogusław, Jurek Adam, Wilczyński Krzystof I.
Zeszyty Naukowe. Transport / Politechnika Śląska
|
2020
|
z. 109
177--186
EN
There is an increasing demand for mixed joints made of hard-weldable steels used in the construction of transport means. An illustration of this is the welding of movable platform elements such as a pin to arm joints. The pin is made of high-strength structural steel S690 QL (1.8928) while the arm of the movable platform is made of DOCOL 1200M steel from the AHSS group (Advanced High-Strength Steel). Such a joint is not easy to make due to the different chemical composition of both steels. The difference in thickness of welded elements creates an additional difficulty. The thickness of the cylindrical pin is 40 mm, whereas the thickness of the sheet metal used for the platform arm is much smaller and amounts to 2 mm. Joints of varying thickness and chemical composition tend to produce cracks in the heat-affected zone as well as in the weld. The purpose of this article is to determine the most appropriate welding parameters and the selection of additional materials to obtain correct joint with good mechanical properties, free of welding defects and incompatibilities.
5
Content available Welding of mobile platform elements made of AHSS steel and a non-alloy steel
Szczucka-Lasota Bożena, Węgrzyn Tomasz, Łazarz Bogusław, Jurek Adam
Zeszyty Naukowe. Transport / Politechnika Śląska
|
2020
|
z. 106
165--171
EN
In the construction of mobile platforms, there is an increasing necessity to weld steels from the AHSS group (AHSS - Advanced High-Strength Steel) with low-alloy steels. This article verifies the possibility of obtaining accurate mixed welded joints from different grades of AHSS steel with S355J2 steel. The structure, as well as mechanical properties of the obtained welded joints, were thoroughly analysed.
6
Content available Welding of mobile platform elements made from mixed grades of high-strength steels
Szczucka-Lasota Bożena, Węgrzyn Tomasz, Łazarz Bogusław, Lukaszkowicz Krzysztof, Jurek Adam, Wilczyński Krzysztof Ireneusz
Zeszyty Naukowe. Transport / Politechnika Śląska
|
2020
|
z. 107
197--203
EN
In the mobile platform structure, there is an increasing necessity to weld steels from the various groups. For instance, it has become necessary to connect AHSS (Advanced High-Strength Steel) with fine-grained steels. This article verifies the possibility of obtaining accurate mixed welded joints from different grades of DOCOL 1400 steel (from the AHSS group) with S700 MC steel (from the fine-grained steel group). The structure, quality and mechanical properties of the obtained welded joints were thoroughly analysed. The joints were made at various welding speed with preheating to 80°C and without preheating.
7
Content available Aluminum alloy welding in automotive industry
Szczucka-Lasota Bożena, Węgrzyn Tomasz, Jurek Adam
Transport Problems
|
2020
|
T. 15, z. 3
67--78
EN
The paper presents the possibilities of using light alloy components in vehicle construction. Material 6082 was chosen for use in responsible structural components. The structure and strength parameters of the material in the delivery state were tested. Tested material parameters were compared with normative requirements. The purpose of the paper is to check the mechanical properties of aluminum alloy welded joints by various processes and parameters. Until now, welding of 6082 alloy did not give good and repeatable results. Because of that, two welding methods were analyzed (MIG and TIG) in the field of the quality of welds, strength of welded joints, and material structures obtained as a result of welding with various parameters.
8
Content available AHSS steel welding with micro-jet cooling in mobile platforms
Węgrzyn Tomasz, Szczucka-Lasota Bożena, Piwnik Jan, Jurek Adam
Transport Problems
|
2020
|
T. 15, z. 1
131--139
EN
This paper focuses on the weldability of advanced high-strength steels (AHSS), commonly used by the automotive industry and civil engineering. These steels have found application in the construction of mobile platforms mounted on vehicles. AHSS significantly outperform other materials when it comes to performance flexibility and mass reduction potential. This article verifies whether the application of micro-jet cooling technology during the welding process might help to overcome these issues. The aim of this article is to choose welding parameters in the process with micro-jet cooling to obtain the best mechanical properties of the welded structure (elongation). The best welding parameters for these difficult-to-weld constructions are presented in detail.
9
Content available Welding mobile platforms elements made of AHSS steel in view of new requirements in civil engineering and transport
Węgrzyn Tomasz, Jurek Adam, Wszołek Łukasz, Stanik Zbigniew
Zeszyty Naukowe. Transport / Politechnika Śląska
|
2019
|
z. 103
209--218
EN
The developing automotive industry has prompted an increase in the demand for new welding technologies in civil engineering and transport that reduce the mass of mobile platforms mounted on vehicles and increase their operational range at the same time. The AHSS steels are the materials most commonly adapted for the production of motor vehicles due to their high tensile strength. Nonetheless, the joints created with their use are less strong from the native material. This article examined whether the application of micro-jet cooling would alter the mechanical properties of the welds. Based on the performed tests, joints with better quality that passed positively in the hardness and tensile strength evaluations were obtained. The presented research proves that the use of additional elements in the welding process significantly affects the quality of the obtained welds and brings satisfactory results with a greater repeatability than before.
10
Content available Mieszanki gazowe stosowane do spawania podpór podestów ruchomych
Szczucka-Lasota Bożena, Węgrzyn Tomasz, Piwnik Jan, Jurek Adam, Wilczyński Krzysztof I.
Aparatura Badawcza i Dydaktyczna
|
2019
|
T. 24, nr 4
258--265
PL
Wzrasta zapotrzebowanie na spajanie trudnospawalnych stali wysokowytrzymałych stosowanych w inżynierii lądowej i w transporcie. Przykładem tego typu konstrukcji mogą być podpory podestu ruchomego. Ważnym materiałem w produkcji podpór podestów ruchomych są stale drobnoziarniste z uwagi na ich dużą wytrzymałość na rozciąganie na poziomie 1000 MPa. Celem prac opisanych w niniejszym artykule było dobranie gazów osłonowych do spawania cienkościennych konstrukcji podpór podestu ruchomego z trudno-spawalnej stali S960 MC.
EN
The demand for welding of hard-welded high-strength steels used in civil engineering and transport is increasing. An example of this type of construction can be movable platform supports. An important material in the production of movable platform supports are fine-grained steels due to their high tensile strength of 1000 MPa. The purpose of this article was to select proper shielding gases for welding thin-walled structures of mobile platform supports made of S960 MC hard-welded steel.
11
Zastosowanie robotów podwodnych w drogownictwie
Żyliński B.
Magazyn Autostrady
|
2015
|
Nr 5
122--123
PL
Robotyka podwodna wydaje się tematem nie tyle abstrakcyjnym, co odległym. Każdy z nas widział w telewizji ujęcia wykonane kilka kilometrów pod wodą. Z trudem można jednak sobie wyobrazić, że takie konstrukcje mogą być stosowane nieomal w życiu codziennym, tym bardziej w drogownictwie.
EN
The author discusses the development of underwater robotics. Cheaper in production and operation, underwater robots, also find application in the road building industry. The article describes their functions and types.
12
Content available remote Comparative analysis of speech signal processing capabilities on mobile platforms Android and iOS
Ciołek M.
Spektrum
|
2013
|
nr 9-10
IV--VII
EN
This paper describes the comparison of the two most popular mobile platforms in terms of speech signal processing. The test was carried out in terms of performance processing algorithm Pitch Synchronous Overlap and Add by two applications. Article also presents technical aspects of the implementation of the algorithm PSOLA on two mobile operating systems Android and iOS with the use of official development environments.
PL
Artykuł przedstawia porównanie dwóch najpopularniejszych platform mobilnych w kontekście przetwarzania sygnałów mowy. Badania przeprowadzono pod kątem wydajności alogorytmu Pitch Synchronous Overlap and Add by two (PSOLA). Wykazano również techniczne aspekty implementacji algorytmu PSOLA na platformach Android i iOS z wykorzystaniem oficjalnych narzędzi programistycznych dla tych środowisk.
13
Wymagania stawiane platformom mobilnym w zadaniach zmniejszenia zagrożenia wywołanego niekontrolowanym uwalnianiem substancji niebezpiecznych
Bartnicki A., Łopatka J.
Logistyka
|
2011
|
nr 6
PL
W referacie przedstawiono wymagania jakie powinny spełniać zdalnie sterowane platformy mobilne, biorące udział w akcjach likwidacji skutkow zdarzeń destrukcyjnych z udziałem substancji niebezpiecznych. Poszukując pożądanych cech tego typu robotów wzorowano się na robotach militarnych wykorzystywanych w misjach usuwania niewybuchow UXO (Unexploded Ordnance) i usuwania dużych ładunków improwizowanych IED (Improvised Explosive Device).
EN
This paper focuses on requirements made on remote-controlled mobile platforms taking part in missions concerning effects liquidation of incidents with dangerous substances. In search of desired characteristics of such vehicles authors followed an example of military robots applied in UXO (Unexploded Ordnance) and IED (Improvised Explosive Device) missions.
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