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Keywords = quick changeover

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16 pages, 7696 KiB  
Article
Wear Mechanisms of the Forging Tool Used in Pre-Forming in a Double Forging System of Truck Parts
by Janusz Krawczyk, Aneta Łukaszek-Sołek, Łukasz Lisiecki, Tomasz Śleboda and Marek Hawryluk
Materials 2023, 16(1), 351; https://doi.org/10.3390/ma16010351 - 30 Dec 2022
Cited by 4 | Viewed by 2018
Abstract
Tool life in plastic forming processes is a problem of the utmost importance as it significantly affects the cost of production. Hot forging with hammers and mechanical presses is an example of the technological process in which the load on tools is extremely [...] Read more.
Tool life in plastic forming processes is a problem of the utmost importance as it significantly affects the cost of production. Hot forging with hammers and mechanical presses is an example of the technological process in which the load on tools is extremely high and, consequently, the lifetime of tools is short. Considering, additionally, that this applies to large-scale production, from an economic point of view, the key issue will be to extend the tool life, make an accurate prediction of the number of parts that can be forged before the replacement of dies is necessary, and develop a system for quick tool changeover. Initially, however, it is necessary to understand the causes of excessive tool wear, which may lie in phenomena occurring at the level of microstructure. The aim of this article was to outline an example of the coexistence of multiple wear mechanisms in hot forging dies. For the modified chemical composition, the microstructure examinations were performed in selected areas of the tool. The research has revealed the causes of cracks in tools and some irregularities in the preparation of tools for production process. Full article
(This article belongs to the Special Issue Sheet/Bulk Metal Forming and Hybrid Components: Theory and Experiment)
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11 pages, 983 KiB  
Article
Applying Lean Healthcare to Improve the Discharge Process in a Mexican Academic Medical Center
by Rodrigo E. Peimbert-García, Luis Meave Gutiérrez-Mendoza and Heriberto García-Reyes
Sustainability 2021, 13(19), 10911; https://doi.org/10.3390/su131910911 - 30 Sep 2021
Cited by 17 | Viewed by 5374
Abstract
Lean Thinking has been one of the preferred approaches to improve healthcare processes in developed countries; however, it has been barely used in Latin America. This study presents a Lean implementation in a Mexican public academic medical center. The goal was to reduce [...] Read more.
Lean Thinking has been one of the preferred approaches to improve healthcare processes in developed countries; however, it has been barely used in Latin America. This study presents a Lean implementation in a Mexican public academic medical center. The goal was to reduce the time required to discharge patients from the Internal Medicine Department. This non-experimental intervention study measured, analyzed, and improved the process flow through a time study, value-added/non-value-added analysis, and the four-step quick changeover approach. Once changes were implemented, inferential statistics were used to compare results. Lean implementation allowed reducing the time to discharge patients from 6 to 3 h by eliminating 57% of non-value-added activities and 70% of errors found in discharge orders. This represents a 2% annual capacity increase and a 6.423 h bed made available without investment. Other findings include barriers regarding untrained staff about process improvement and departmental barriers and a successful quick changeover implementation. This is one of the handful of implementations of Lean Healthcare in Latin America. Furthermore, this is one of the very first studies that showcase the implementation of the quick changeover approach in healthcare. Further research should focus on the long-term impact and how the specific environment encourages/discourages future implementations. Full article
(This article belongs to the Special Issue Advances in Sustainable Technology: The Lean 6S Methodology)
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12 pages, 546 KiB  
Article
Without Data Quality, There Is No Data Migration
by Otmane Azeroual and Meena Jha
Big Data Cogn. Comput. 2021, 5(2), 24; https://doi.org/10.3390/bdcc5020024 - 18 May 2021
Cited by 12 | Viewed by 7286
Abstract
Data migration is required to run data-intensive applications. Legacy data storage systems are not capable of accommodating the changing nature of data. In many companies, data migration projects fail because their importance and complexity are not taken seriously enough. Data migration strategies include [...] Read more.
Data migration is required to run data-intensive applications. Legacy data storage systems are not capable of accommodating the changing nature of data. In many companies, data migration projects fail because their importance and complexity are not taken seriously enough. Data migration strategies include storage migration, database migration, application migration, and business process migration. Regardless of which migration strategy a company chooses, there should always be a stronger focus on data cleansing. On the one hand, complete, correct, and clean data not only reduce the cost, complexity, and risk of the changeover, it also means a good basis for quick and strategic company decisions and is therefore an essential basis for today’s dynamic business processes. Data quality is an important issue for companies looking for data migration these days and should not be overlooked. In order to determine the relationship between data quality and data migration, an empirical study with 25 large German and Swiss companies was carried out to find out the importance of data quality in companies for data migration. In this paper, we present our findings regarding how data quality plays an important role in a data migration plans and must not be ignored. Without acceptable data quality, data migration is impossible. Full article
(This article belongs to the Special Issue Educational Data Mining and Technology)
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