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The application of welding processes during manufacturing of metallic products result in changes of the properties of the base materials. Process simulation enables evaluation of the effect of heat application in proximity to the weld seam. The availability and use of input data, relevant for the specific material, is essential for the reliability of the results. The thermal characteristics of the materials, required for the heat modelling were identified. Their dependency on the material temperature was investigated and the formulas were presented. Particular values were found in existingdata sources, for specific structural steels, stainless steels, nickel and titanium alloys. The values of the thermal characteristics were represented and in graphical and tabulated formats, facilitating direct implementation in calculations, assessment of variation trends and applicability for specific purposes.

In this paper, dissimilar aluminum (Al) and copper (Cu) metals were joined together using ultrasonic metal welding (USMW), a solid-state welding technology. From the perspective of increasing the base metal welding contact area, the Cu/Al mating surface was innovatively prepared and ultrasonically welded. A comprehensive analysis was carried out on the forming quality, welding process temperature, interface structure, and mechanical properties of the welded joint. Defect-free and squeezed welds were successfully achieved by machining novel patterns especially C4-2. The results indicated that the reference joint can withstand higher loads, but its failure mode is very unstable. Failure may occur at welded interface and on the aluminum plate which is not good for actual production applications. Welded strength of reference joint was 4493 N, and the welded strength of C4-2 joint was 3691 N. However, microscopic analysis discovered that the welded joint internal morphology in C4-2 was more stable and hardest. C4-2 joint has successfully achieved higher tensile strength and stability under failure displacement of 38% which is higher than C4-1 joint. All welded joint failures occurred on aluminum plate, indicating that the joint strength is higher than that of bottom plate. This is attributed to unique structural design of chiseled joint and lesser thickness. SEM–EDS results investigated that the C4-2 joint can transfer more energy to area under welding head which provides welded joint with robust diffusion capacity. The transition layer has a higher thickness while the energy transferred to area away from welding head was smaller. Thickness of transition layer is significantly reduced and reference joint has similar diffusion characteristics. Conversely, the thickness of the transition layer at the corresponding position is smaller than that of pattern morphology. This is due to overall smaller thickness of the pattern joint which is more conducive to the transfer of wel

In the industrial sector, next generation technologies are being rapidly developed. One of the promising technologies is cyber-physical systems which are being used to revolutionize the welding process. A cyber-physical system can greatly improve the welding processes by taking over the tasks performed by humans, such as analysis, control and sensing which results in increased efficiency, quality, and stability of the welding process. However, integrating cyber-physical systems in the welding process requires a digital transformation strategy that outlines how organizational and technical challenges are intended to be resolved. The aim of the study is to identify the organizational challenges of integrating cyber-physical systems, and how to overcome them with the use of a digital transformation strategy. For this, the study adopts a qualitative case study approach to investigate the organizational challenges of integrating a cyber-physical system in the welding process of a large manufacturing organization. Further, it outlines aspects required in a digital transformation strategy to succeed with the integration. The findings indicate that common challenges when integrating cyber-physical systems revolve around building secure networks, securing competencies, committing to the integration, and achieving transparency between management and employees. In addition, when formulating a digital transformation strategy, the findings indicate three factors that contribute to the success of the transformation. These are involvement of critical digital skills, undergoing required structural changes and reengineering organizational work processes where the cyber-physical system aims to be integrated. Besides providing practical implications for the challenges and formulation of a digital transformation strategy for implementing cyber-physical systems in the welding process, the study contributes to the literature on digital transformation strategy and cyber-physical systems

In the industrial sector, next generation technologies are being rapidly developed. One of the promising technologies is cyber-physical systems which are being used to revolutionize the welding process. A cyber-physical system can greatly improve the welding processes by taking over the tasks performed by humans, such as analysis, control and sensing which results in increased efficiency, quality, and stability of the welding process. However, integrating cyber-physical systems in the welding process requires a digital transformation strategy that outlines how organizational and technical challenges are intended to be resolved. The aim of the study is to identify the organizational challenges of integrating cyber-physical systems, and how to overcome them with the use of a digital transformation strategy. For this, the study adopts a qualitative case study approach to investigate the organizational challenges of integrating a cyber-physical system in the welding process of a large manufacturing organization. Further, it outlines aspects required in a digital transformation strategy to succeed with the integration. The findings indicate that common challenges when integrating cyber-physical systems revolve around building secure networks, securing competencies, committing to the integration, and achieving transparency between management and employees. In addition, when formulating a digital transformation strategy, the findings indicate three factors that contribute to the success of the transformation. These are involvement of critical digital skills, undergoing required structural changes and reengineering organizational work processes where the cyber-physical system aims to be integrated. Besides providing practical implications for the challenges and formulation of a digital transformation strategy for implementing cyber-physical systems in the welding process, the study contributes to the literature on digital transformation strategy and cyber-physical systems

The metal transfer, as a particularity of the process with consumable electrodes, has a direct influence on different aspects of the welding process. Hence, the operation performance is affected by the quantity of spatter and mostly, in the stability where the electrical phenomena happen. This work established a methodology to compare techniques for the definition of stability in the forms of metal transfer presented in the GMAW process. For that, welding tests were carried out in the flat position, establishing parameters, and modifying the voltage between a range of 14 to 32 V. In addition, it was analyzed the behavior of the process using histograms, stability indicators, and weld bead geometry characterization. As a result, high process instability and splashing of low voltages were obtained, improving these conditions for higher voltages. In conclusion, the best conditions for the welding process are established at the point with the highest frequency of short circuits, exhibiting a minimum of spatter and the best welding bead., La transferencia metálica, como particularidad del proceso con electrodos consumibles, ejerce influencia directa sobre variados aspectos del proceso de soldadura; de este modo, el desempeño operacional de la técnica se ve afectado por un mayor o menor nivel de salpicaduras y, en general, por la estabilidad con que los fenómenos eléctricos ocurren. En el presente artículo fue establecida una metodología que permitió comparar técnicas para la definición de la estabilidad, en los tipos de transferencia metálica presentados en el proceso GMAW. Para esto, se realizaron ensayos de soldadura en la posición plana, estableciendo parámetros y variando el voltaje entre un rango de 14 a 32 V. Además, fue analizado el comportamiento del proceso, mediante el uso de histogramas, índices de estabilidad y la caracterización de la geometría del cordón. Como resultado, se obtuvo alta inestabilidad del proceso y salpicaduras en bajas tensiones, mejorando estas condiciones para las tensiones más altas. En conclusión, en el punto de mayor frecuencia de cortos circuitos se establecen las mejores condiciones para el proceso de soldadura, exhibiendo un mínimo de salpicaduras y el cordón de soldadura con mejor formato.

The proper management of the operations is fundamental to the companies' results, and, particularly, the continuous improvement in production processes is extremely important to raise the level of efficiency. The present study aimed to simulate the process of welding of a component called heat exchanger that makes up a gas water heater. Then, this simulation has the objective of optimizing the production process. The data collected were obtained from a company located in Mogi das Cruzes, São Paulo. The results of the simulation model point to opportunities for improvement, mainly in the direction of reducing work shifts.

The proper management of the operations is fundamental to the companies' results, and, particularly, the continuous improvement in production processes is extremely important to raise the level of efficiency. The present study aimed to simulate the process of welding of a component called heat exchanger that makes up a gas water heater. Then, this simulation has the objective of optimizing the production process. The data collected were obtained from a company located in Mogi das Cruzes, São Paulo. The results of the simulation model point to opportunities for improvement, mainly in the direction of reducing work shifts.

The proper management of the operations is fundamental to the companies' results, and, particularly, the continuous improvement in production processes is extremely important to raise the level of efficiency. The present study aimed to simulate the process of welding of a component called heat exchanger that makes up a gas water heater. Then, this simulation has the objective of optimizing the production process. The data collected were obtained from a company located in Mogi das Cruzes, São Paulo. The results of the simulation model point to opportunities for improvement, mainly in the direction of reducing work shifts.

The proper management of the operations is fundamental to the companies' results, and, particularly, the continuous improvement in production processes is extremely important to raise the level of efficiency. The present study aimed to simulate the process of welding of a component called heat exchanger that makes up a gas water heater. Then, this simulation has the objective of optimizing the production process. The data collected were obtained from a company located in Mogi das Cruzes, São Paulo. The results of the simulation model point to opportunities for improvement, mainly in the direction of reducing work shifts.

The proper management of the operations is fundamental to the companies' results, and, particularly, the continuous improvement in production processes is extremely important to raise the level of efficiency. The present study aimed to simulate the process of welding of a component called heat exchanger that makes up a gas water heater. Then, this simulation has the objective of optimizing the production process. The data collected were obtained from a company located in Mogi das Cruzes, São Paulo. The results of the simulation model point to opportunities for improvement, mainly in the direction of reducing work shifts.

The proper management of the operations is fundamental to the companies' results, and, particularly, the continuous improvement in production processes is extremely important to raise the level of efficiency. The present study aimed to simulate the process of welding of a component called heat exchanger that makes up a gas water heater. Then, this simulation has the objective of optimizing the production process. The data collected were obtained from a company located in Mogi das Cruzes, São Paulo. The results of the simulation model point to opportunities for improvement, mainly in the direction of reducing work shifts.

Bakgrund: Under de senaste decennierna har industriell logistik fått en allt viktigare roll för att ge företag konkurrensfördelar på den globala marknaden. För att uppnå ökad effektivitet i logistikfunktionen kan konfigurationen av ett internt materialförsörjningssystem ha en betydande inverkan på minimering av icke värdeadderande aktiviteter. Det finns flera principer för intern materialförsörjning, hur dessa appliceras har en signifikant påverkan i en industriell miljö. Valet mellan olika system kännetecknas av en överhängande komplexitet där tillverkningsindustrier byter fram och tillbaka flera gånger. Syfte: Syftet med studien är att föreslå ett ramverk för utveckling av interna materialförsörjningssystem gällande svetsprocess inom metallbearbetning. Genomförande: Studien är genomförd som en enfallsstudie på Hörle Automatic. Där studiens tillvägagångsätt har varit att identifiera icke värdeadderade aktiviteter i fallföretagets interna materialförsörjningssystem till svetsprocessen. För att därefter utveckla deras nuvarande system för att minimera identifierade aktiviteter. Utifrån detta har ett ramverk konstruerats som belyser faktor som ska tas i beaktning vid utveckling av ett internt materialförsörjningssystem. Empiriskt material har samlats in genom intervjuer, observationer, fokusgrupper och arkivmaterial. För att möjliggöra identifiering av icke värdeadderande aktiviteter har en processkartläggning upprättats. Fortsättningsvis har det genomförts tester gällande förslag på arbetssätt som utvecklats. Resultat/Diskussion: Ett ramverk har konstruerats som belyser elva olika faktorer som ska tas i beaktning vid utveckling av ett internt materialförsörjningsystem. Det är faktorer relaterade till produktionsvariation, detaljspecifikation, layout, leverantörer och kommunikation. Slutsats: Det har identifierats totalt 18 icke värdeadderande aktiviteter gällande Hörle Automatics interna materialförsörjningssystem till svetsprocessen. Utvecklingen av det interna mate, Background: Over the past decades, industrial logistics has gained an increasingly important role in giving companies a competitive edge in the global market. To achieve increased efficiency in the logistics function, the configuration of an internal materials supply system may have a significant impact on minimizing non-value added activities. There are several principles for internal materials supply system, how these are applied have a great impact on it’s industrial environment. The choice between different systems is characterized by an complexity where manufacturing industries change back and forth several times. Purpose: The purpose of this study is to propose a framework for the development of internal materials supply systems in the welding process within metalworking. Methodology: This is a case study at Hörle Automatic. The study approach has been to identify non-value adding activities in the case company's internal materials supply system to the welding process. And after that develop their current system to minimize identified activities. Based on this, a framework has been designed to highlight the factors to be taken into account when developing an internal materials supply system. Empirical material has been collected through interviews, observations, focus groups and archival material. To enable identification of nonvalue-adding activities, a process mapping has been established. Furthermore, tests have been carried out regarding internal materials supply processes to strengthen the author's proposal. Result/Discussion: The result of the study is a framework including eleven factors that companies should take into account when developing an internal materials supply system. The framework involves factors regarding, production variation, item specification, layout, suppliers, and communication. Conclusion: A total of 18 non-value adding activities was identified regarding Hörle Automatic's internal materials supply system in their welding process. T

FNsteel i Linköping tillverkar spännlina, en produkt som används av prefab-industrin för tillverkning av förspända betongelement t.ex. håldäck, balkar, bjälklag och järnvägsslipers. Vid tillverkningen drar man valstråd i tråddragningsmaskiner som reducerar valstrådens tvärsnittsarea och ökar längden samtidigt som tråden får en annan metallstruktur. Den dragna tråden slås sedan till tre- eller sjutrådig spännlina. Vid tillverkningen svetsar operatörer ihop valstrådar och hanteringen av valstråden är idag manuell. Företaget vill i framtiden automatisera sin svetsprocess vid skarvning utav valstrådar då det är ett tungt och ensidigt arbete för operatörerna samt för att kunna öka produktiviteten. Examensarbetet är ett produktutvecklingsprojekt som innehåller en analys utav tillverkningen idag och förslag på standardisering för att kunna automatisera samt konstruktionsunderlag för automatisering av vissa moment i processen. Under arbetets gång har det identifierats att processen inte är mogen för att automatiseras utan att företaget först behöver ta fram en standard för hur processen ska se ut för att kunna möjliggöra en automatisering av hela svetsprocessen. Ett antal moment i processen kräver fortsatt arbete för att möjliggöra automatiseringen av processen, samtidigt som det redan idag är möjligt att automatisera vissa delar av processen då dessa enkelt kan standardiseras. Konceptlösningen som tagits fram består av pneumatiska cylindrar, konstruerade trådklämmor och hydraulisk trådklippare., FNsteel in Linköping manufactures wire rod, a product used by the prefabricated industry for the manufacture of prestressed concrete elements eg. hollow cores, beams, beam joints and railroad slides. In manufacturing, a wire is drawn through a wire drawing machine that reduces the wires cross sectional area and increase the length while the wire is given a different metal structure. The drawn wire is then turned to three or seven-wire wire rod. In manufacturing, operators weld together wire threads and the handling of the wire is today manual. In the future, the company wants to automate its welding process by splicing of wire threads as there is a heavy and one-sided work for operators, and also in order to increase productivity. The thesis work is a product development project that contains an analysis of the manufacturing process today and suggestions for standardization to automate, as well as design documentation for automation of certain elements of the process. During the course of the process, it has been identified that the process is not mature for automation without the company first having to come up with a standard for the process to enable automation of the entire welding process. A number of elements in the process require continued work to enable automation of the process, while it is already possible to automate certain parts of the process as these can easily be standardized. The conceptual solution developed consists of pneumatic cylinders, engineered wire clips and hydraulic wire cutters.

FNsteel i Linköping tillverkar spännlina, en produkt som används av prefab-industrin för tillverkning av förspända betongelement t.ex. håldäck, balkar, bjälklag och järnvägsslipers. Vid tillverkningen drar man valstråd i tråddragningsmaskiner som reducerar valstrådens tvärsnittsarea och ökar längden samtidigt som tråden får en annan metallstruktur. Den dragna tråden slås sedan till tre- eller sjutrådig spännlina. Vid tillverkningen svetsar operatörer ihop valstrådar och hanteringen av valstråden är idag manuell. Företaget vill i framtiden automatisera sin svetsprocess vid skarvning utav valstrådar då det är ett tungt och ensidigt arbete för operatörerna samt för att kunna öka produktiviteten. Examensarbetet är ett produktutvecklingsprojekt som innehåller en analys utav tillverkningen idag och förslag på standardisering för att kunna automatisera samt konstruktionsunderlag för automatisering av vissa moment i processen. Under arbetets gång har det identifierats att processen inte är mogen för att automatiseras utan att företaget först behöver ta fram en standard för hur processen ska se ut för att kunna möjliggöra en automatisering av hela svetsprocessen. Ett antal moment i processen kräver fortsatt arbete för att möjliggöra automatiseringen av processen, samtidigt som det redan idag är möjligt att automatisera vissa delar av processen då dessa enkelt kan standardiseras. Konceptlösningen som tagits fram består av pneumatiska cylindrar, konstruerade trådklämmor och hydraulisk trådklippare., FNsteel in Linköping manufactures wire rod, a product used by the prefabricated industry for the manufacture of prestressed concrete elements eg. hollow cores, beams, beam joints and railroad slides. In manufacturing, a wire is drawn through a wire drawing machine that reduces the wires cross sectional area and increase the length while the wire is given a different metal structure. The drawn wire is then turned to three or seven-wire wire rod. In manufacturing, operators weld together wire threads and the handling of the wire is today manual. In the future, the company wants to automate its welding process by splicing of wire threads as there is a heavy and one-sided work for operators, and also in order to increase productivity. The thesis work is a product development project that contains an analysis of the manufacturing process today and suggestions for standardization to automate, as well as design documentation for automation of certain elements of the process. During the course of the process, it has been identified that the process is not mature for automation without the company first having to come up with a standard for the process to enable automation of the entire welding process. A number of elements in the process require continued work to enable automation of the process, while it is already possible to automate certain parts of the process as these can easily be standardized. The conceptual solution developed consists of pneumatic cylinders, engineered wire clips and hydraulic wire cutters.

Bakgrund: Under de senaste decennierna har industriell logistik fått en allt viktigare roll för att ge företag konkurrensfördelar på den globala marknaden. För att uppnå ökad effektivitet i logistikfunktionen kan konfigurationen av ett internt materialförsörjningssystem ha en betydande inverkan på minimering av icke värdeadderande aktiviteter. Det finns flera principer för intern materialförsörjning, hur dessa appliceras har en signifikant påverkan i en industriell miljö. Valet mellan olika system kännetecknas av en överhängande komplexitet där tillverkningsindustrier byter fram och tillbaka flera gånger. Syfte: Syftet med studien är att föreslå ett ramverk för utveckling av interna materialförsörjningssystem gällande svetsprocess inom metallbearbetning. Genomförande: Studien är genomförd som en enfallsstudie på Hörle Automatic. Där studiens tillvägagångsätt har varit att identifiera icke värdeadderade aktiviteter i fallföretagets interna materialförsörjningssystem till svetsprocessen. För att därefter utveckla deras nuvarande system för att minimera identifierade aktiviteter. Utifrån detta har ett ramverk konstruerats som belyser faktor som ska tas i beaktning vid utveckling av ett internt materialförsörjningssystem. Empiriskt material har samlats in genom intervjuer, observationer, fokusgrupper och arkivmaterial. För att möjliggöra identifiering av icke värdeadderande aktiviteter har en processkartläggning upprättats. Fortsättningsvis har det genomförts tester gällande förslag på arbetssätt som utvecklats. Resultat/Diskussion: Ett ramverk har konstruerats som belyser elva olika faktorer som ska tas i beaktning vid utveckling av ett internt materialförsörjningsystem. Det är faktorer relaterade till produktionsvariation, detaljspecifikation, layout, leverantörer och kommunikation. Slutsats: Det har identifierats totalt 18 icke värdeadderande aktiviteter gällande Hörle Automatics interna materialförsörjningssystem till svetsprocessen. Utvecklingen av det interna mate, Background: Over the past decades, industrial logistics has gained an increasingly important role in giving companies a competitive edge in the global market. To achieve increased efficiency in the logistics function, the configuration of an internal materials supply system may have a significant impact on minimizing non-value added activities. There are several principles for internal materials supply system, how these are applied have a great impact on it’s industrial environment. The choice between different systems is characterized by an complexity where manufacturing industries change back and forth several times. Purpose: The purpose of this study is to propose a framework for the development of internal materials supply systems in the welding process within metalworking. Methodology: This is a case study at Hörle Automatic. The study approach has been to identify non-value adding activities in the case company's internal materials supply system to the welding process. And after that develop their current system to minimize identified activities. Based on this, a framework has been designed to highlight the factors to be taken into account when developing an internal materials supply system. Empirical material has been collected through interviews, observations, focus groups and archival material. To enable identification of nonvalue-adding activities, a process mapping has been established. Furthermore, tests have been carried out regarding internal materials supply processes to strengthen the author's proposal. Result/Discussion: The result of the study is a framework including eleven factors that companies should take into account when developing an internal materials supply system. The framework involves factors regarding, production variation, item specification, layout, suppliers, and communication. Conclusion: A total of 18 non-value adding activities was identified regarding Hörle Automatic's internal materials supply system in their welding process. T

Presently, fiber reinforced materials are used for many industrial applications. Laser transmission welding (LTW) is a suitable method to join these materials. For multiple thermoplastics, the weld seam quality is affected by the amount of moisture content in the joining members. For LTW, heat is applied to the welding members and water in the composite changes phase from liquid to gas. Increasing the gas content can lead to detrimental cavities in the weld seam. Therefore, experiments were performed to investigate the influence of the laser focal geometry on the generation of cavities. Different focal geometries lead to different levels of process heat generation which affects the amount of vaporization. The experiments were conducted with endless glass fiber reinforced polyetherimide and endless carbon fiber reinforced polyetherimide. These samples were tested for their weld seam strength and the results were correlated to the moisture content and laser beam geometry. © 2016 The Authors.

Diplomová práce se zabývá měřením teploty pomocí termočlánku v místě svaru smršťovací trubičky z fluoropolymeru s izolací přívodních vodičů k NTC (teplotnímu sen-zoru) v průběhu svařovacího procesu. Naměřené hodnoty svařovacích teplot jsou podstatné ke zjištění správného natavení a těsného spojení komponent. Ze získaných dat je důležité stanovit svařovací proces, tak aby bylo dosaženo dostatečně těsného spoje a nedošlo k poškození teplotního senzoru. Tato práce začíná teoretickou částí, kde je popsána literární rešerše na téma spojování dílů z fluoropolymerů. Praktická část je založena na přípravě a provedení experimentu, vyhodnocení získaných výsledků a na simulaci přestupu tepla jednotlivými vrstvami materiálů., This master's thesis is investigating fluoropolymer materials behaviour while welding process in a concrete application at RBCB. The goal of this master's thesis is to determine the optimal welding temperature which needs to be used for tight connection between fluoropolymer (ETFE) insulated wires leading to a NTC (Negative temperature coefficient sensor) and protective dual wall welding tube form fluoropolymer materials (PTFE/ETFE) as well. A tight connection is necessary for successful NTC protection. The experiment was made on a special welding machine at RBCB and a thermocouple for temperature measurement inside of the weld area was used. Additionally, to understand better about the heat transfer inside of the welding zone, a simulation on Ansys software was performed. This thesis begins with a theoretical part, which describes the literature research about fluoropolymer materials and its connections. The practical part describes the samples preparation, performing the experiment and results evaluation from performed measures., Ústav výrobního inženýrství

This paper addresses the problem of automatic monitoring the weld quality produced by robotised short arc welding. A simple statistical change detection algorithm for the weld quality, recursive sequential probability ratio test (SPRT), is used. The algorithm may equivalently be viewed as a cumulative sum (CUSUM) type test. The test statistics is based upon the variance of the amplitude of the weld voltage. It is shown that the variance of the weld voltage amplitude decreases when the welding process is not operating under optimal condition. The performance of the algorithm is evaluated using experimental data. The results obtained from the algorithm indicate that it is possible to detect changes in the weld quality automatically and on-line

Předložená práce se zabývá redukcí pórů ve svarech na tlakových zásobnících vyráběných ve společnosti Bosch. Tlakový zásobník je využíván v dieslovém vstřikovacím systému Common Rail. Byla sestavena analýza, která se skládala z dat četnosti zmetků v průběhu roku 2016 a hodnot, kdy se měnili média v pračkách, v kterých se tlakové zásobníky čistily od mastnoty. Z následně vytvořených grafů je vidět, kdy se zmetky objevovaly nejčastěji a pomocí těchto výsledků, byl vytvořen návrh na redukci pórovitosti ve svarech., This bachelor thesis dealt with the reduction of pores in the welds. These welds were in pressure stacks which are made by the Bosch company. There are Common Rail diesel injection systems in which are those pressure stacks used in. An analysis was compiled, which consisted of dates of scrap rates in the yeas 2016, and the values in which the media changed in washing machines where the pressure stacks were cleaned of grease. From the following graphs is obvious when the scraps appeared mostly and according to these results there is a proposal to reduce the porosity in the welds.

Projekt vypracovaný v rámci bakalářského studia oboru B-STG Strojírenská technologie je zaměřen na vypracování protokolů o předběžné specifikaci postupu svařování pWPS pro zadaný výkres svařence. Následné schválení těchto předběžných protokolů je provedeno protokolem o kvalifikaci postupu svařování WPQR. Tento WPQR protokol je vypracován pro obdobné zadání již vypracovaných pWPS protokolů. Nejdůležitějšími částmi WPQR protokolu jsou destruktivní a nedestruktivní zkoušky, které jsou rozebrány jak z teoretické tak z praktické oblasti. Na konec je uveden výsledný WPS protokol s přímou návazností na WPQR protokol a je provedeno zhodnocení kontrolních zkoušek., The project developed within the bachelor's degree field of B-STG Engineering technology is focused on developing protocols for a preliminary welding procedure specification for a given drawing pWPS weldments. Subsequent to preliminary approval of these protocols are implemented protocol for qualification of welding procedures WPQR. This WPQR protocol is drawn up for a similar award has developed pWPS protocols. The most important parts of the protocol WPQR are destructive and nondestructive tests, which are discussed from both theoretical and practical in the field. At the end of the WPS is the resulting log with a direct link to WPQR protocol is implemented and appreciation of the control tests.

Projekt vypracovaný v rámci bakalářského studia oboru B-STG Strojírenská technologie je zaměřen na vypracování protokolů o předběžné specifikaci postupu svařování pWPS pro zadaný výkres svařence. Následné schválení těchto předběžných protokolů je provedeno protokolem o kvalifikaci postupu svařování WPQR. Tento WPQR protokol je vypracován pro obdobné zadání již vypracovaných pWPS protokolů. Nejdůležitějšími částmi WPQR protokolu jsou destruktivní a nedestruktivní zkoušky, které jsou rozebrány jak z teoretické tak z praktické oblasti. Na konec je uveden výsledný WPS protokol s přímou návazností na WPQR protokol a je provedeno zhodnocení kontrolních zkoušek., The project developed within the bachelor's degree field of B-STG Engineering technology is focused on developing protocols for a preliminary welding procedure specification for a given drawing pWPS weldments. Subsequent to preliminary approval of these protocols are implemented protocol for qualification of welding procedures WPQR. This WPQR protocol is drawn up for a similar award has developed pWPS protocols. The most important parts of the protocol WPQR are destructive and nondestructive tests, which are discussed from both theoretical and practical in the field. At the end of the WPS is the resulting log with a direct link to WPQR protocol is implemented and appreciation of the control tests.

Předložená práce se zabývá redukcí pórů ve svarech na tlakových zásobnících vyráběných ve společnosti Bosch. Tlakový zásobník je využíván v dieslovém vstřikovacím systému Common Rail. Byla sestavena analýza, která se skládala z dat četnosti zmetků v průběhu roku 2016 a hodnot, kdy se měnili média v pračkách, v kterých se tlakové zásobníky čistily od mastnoty. Z následně vytvořených grafů je vidět, kdy se zmetky objevovaly nejčastěji a pomocí těchto výsledků, byl vytvořen návrh na redukci pórovitosti ve svarech., This bachelor thesis dealt with the reduction of pores in the welds. These welds were in pressure stacks which are made by the Bosch company. There are Common Rail diesel injection systems in which are those pressure stacks used in. An analysis was compiled, which consisted of dates of scrap rates in the yeas 2016, and the values in which the media changed in washing machines where the pressure stacks were cleaned of grease. From the following graphs is obvious when the scraps appeared mostly and according to these results there is a proposal to reduce the porosity in the welds.

Předložená práce se zabývá redukcí pórů ve svarech na tlakových zásobnících vyráběných ve společnosti Bosch. Tlakový zásobník je využíván v dieslovém vstřikovacím systému Common Rail. Byla sestavena analýza, která se skládala z dat četnosti zmetků v průběhu roku 2016 a hodnot, kdy se měnili média v pračkách, v kterých se tlakové zásobníky čistily od mastnoty. Z následně vytvořených grafů je vidět, kdy se zmetky objevovaly nejčastěji a pomocí těchto výsledků, byl vytvořen návrh na redukci pórovitosti ve svarech., This bachelor thesis dealt with the reduction of pores in the welds. These welds were in pressure stacks which are made by the Bosch company. There are Common Rail diesel injection systems in which are those pressure stacks used in. An analysis was compiled, which consisted of dates of scrap rates in the yeas 2016, and the values in which the media changed in washing machines where the pressure stacks were cleaned of grease. From the following graphs is obvious when the scraps appeared mostly and according to these results there is a proposal to reduce the porosity in the welds.

Projekt vypracovaný v rámci bakalářského studia oboru B-STG Strojírenská technologie je zaměřen na vypracování protokolů o předběžné specifikaci postupu svařování pWPS pro zadaný výkres svařence. Následné schválení těchto předběžných protokolů je provedeno protokolem o kvalifikaci postupu svařování WPQR. Tento WPQR protokol je vypracován pro obdobné zadání již vypracovaných pWPS protokolů. Nejdůležitějšími částmi WPQR protokolu jsou destruktivní a nedestruktivní zkoušky, které jsou rozebrány jak z teoretické tak z praktické oblasti. Na konec je uveden výsledný WPS protokol s přímou návazností na WPQR protokol a je provedeno zhodnocení kontrolních zkoušek., The project developed within the bachelor's degree field of B-STG Engineering technology is focused on developing protocols for a preliminary welding procedure specification for a given drawing pWPS weldments. Subsequent to preliminary approval of these protocols are implemented protocol for qualification of welding procedures WPQR. This WPQR protocol is drawn up for a similar award has developed pWPS protocols. The most important parts of the protocol WPQR are destructive and nondestructive tests, which are discussed from both theoretical and practical in the field. At the end of the WPS is the resulting log with a direct link to WPQR protocol is implemented and appreciation of the control tests.

Předložená práce se zabývá redukcí pórů ve svarech na tlakových zásobnících vyráběných ve společnosti Bosch. Tlakový zásobník je využíván v dieslovém vstřikovacím systému Common Rail. Byla sestavena analýza, která se skládala z dat četnosti zmetků v průběhu roku 2016 a hodnot, kdy se měnili média v pračkách, v kterých se tlakové zásobníky čistily od mastnoty. Z následně vytvořených grafů je vidět, kdy se zmetky objevovaly nejčastěji a pomocí těchto výsledků, byl vytvořen návrh na redukci pórovitosti ve svarech., This bachelor thesis dealt with the reduction of pores in the welds. These welds were in pressure stacks which are made by the Bosch company. There are Common Rail diesel injection systems in which are those pressure stacks used in. An analysis was compiled, which consisted of dates of scrap rates in the yeas 2016, and the values in which the media changed in washing machines where the pressure stacks were cleaned of grease. From the following graphs is obvious when the scraps appeared mostly and according to these results there is a proposal to reduce the porosity in the welds.