scholarly journals Redesign of the Curing Area of the Tire Manufacturing Process

2020 ◽  
Vol 12 (17) ◽  
pp. 6909
Author(s):  
Florin Stîngă ◽  
Irina Severin ◽  
Ioana Alina Mitrache ◽  
Elena Lascu
Keyword(s):  
Manufacturing Process ◽  
Production Efficiency ◽  
Standard Operating Procedure ◽  
Added Value ◽  
Market Regulation ◽  
Improvement Plan ◽  
Economic Commission ◽  
Quality Instruments ◽  
Quality Tools

In this study, the production efficiency of a company’s manufacturing flow decreased, and therefore specific improvement actions on the tire manufacturing process were implemented. Additionally, the process improvement plan started with a deeper understanding of the activities, by using the SIPOC method (suppliers, inputs, process, outputs, customers). In order to identify the root-causes and the opportunities for improvement, quality instruments, such as the Ishikawa and Pareto quality tools, were used. The tire manufacturing process was reorganized using the 5S method, then the process was standardized and maintained through specific working procedures drafted on the standard operating procedure format. A particular device was designed for unlocking spring vents. Finally, the implementation of the redesign project shows added value as the entire manufacturing process improved by identifying weaknesses and correcting them. In addition to this, a different objective of the same company used in this case study is linked to adapting to market regulation requirements (the Economic Commission of Europe), with the aim to remain competitive. Therefore, well-defined processes and a strategy based on continuous improvement are needed. The methodology may be transferred to other industries.

Manufacturing Process Improvement to Increase the Productivity of Gas Turbine Blade and Vane

2007 ◽  
Author(s):  
Kooji Takahashi ◽  
Hiroshi Asano ◽  
Yota Kojima
Keyword(s):  
Gas Turbine ◽  
New Product Development ◽  
Manufacturing Process ◽  
Lead Time ◽  
Production Efficiency ◽  
Turbine Blades ◽  
Added Value ◽  
Machining Time ◽  
Design Changes ◽  
Machined Parts

In general, gas turbine combustors, turbine blades and vanes, called hot section parts, are considered consumables that require repair or replacement at periodic overhaul/inspections. The number of blades and vanes used for each power plant is ranges from several tens up to several hundreds. In order to assure timely supply for the demand by existing and/or new plants, it is extremely important to establish a manufacturing system for mass production. Additionally, there are continuing design changes resulting from both feed-back from actual operating units and new product development. Although these design changes generally add higher performance and added value to customer, the promotion of shortening the manufacturing lead time is a key of vital importance. To address this issue, MHI Takasago introduced one piece flow production lines into the row 1 blade and vane production section. This innovative change resulted in reduced distance between operations in the shops, reduction of stagnant items and improvement in the overall quality of the final product. Furthermore, the implementation of quality confirmation (in-process inspection) for the machined parts prevents defective parts from moving further in the manufacturing process and the continuous defection. As a result, a significant reduction in the defect rate has been accomplished. This trial has achieved an average reduction of total lead time of 20% for blades and 25% for vanes, compared with conventional lot production. Recently further improvements in production efficiency have been realized by improvement of tool and machining conditions, the equalization of machining time for each operation and eliminating unnecessary operations in standard works.

scholarly journals MWO Line Optimization Applying Lean Manufacturing Methodology: PIM Case Study

2019 ◽  
Vol 7 (11) ◽  
pp. 776-787
Author(s):  
Aline Azevedo Eleutério ◽  
Alexandra Priscilla Tregue Costa ◽  
David Barbosa de Alencar ◽  
Antônio Estanislau Sanches
Keyword(s):  
Production Process ◽  
Lean Manufacturing ◽  
Added Value ◽  
Minimal Amount ◽  
Profit Margins ◽  
Work In Process ◽  
Quality Tools ◽  
Lean Methods ◽  
Very High

With the increasing competitiveness in the market and the constant development of technologies, today companies are constantly improving, the managers' concern is to achieve maximum process productivity with minimum losses and waste, thus reducing the value to the maximum. aggregate to the product and taking considerable profit margins from sales, so it is of paramount importance to have a lean production process, with well-balanced production times, a minimal amount of work in process and especially a minimal amount of labor , which has very high costs that generates added value directly in the product. In this study was applied the methodology, observation, quantitative and deductive based on theoretical references in order to maximize the efficiency of the production process, through the use of some Lean methods and quality tools as a way of discourse for process improvement also applying process balancing with the primary purpose of reducing the amount of direct labor. Thus the present study presented satisfactory results increasing the efficiency of the microwave oven production line, with the reduction of a direct operator, bringing a leaner and more efficient process.

scholarly journals Changes in management actions after the Hospital Accreditation

Rev Rene ◽  
2016 ◽  
Vol 17 (2) ◽  
pp. 165 ◽  
Author(s):  
Andréia Guerra Siman ◽  
Simone Graziele Silva Cunha ◽  
Maria José Menezes Brito
Keyword(s):  
Content Analysis ◽  
Data Collection ◽  
Work Organization ◽  
Hospital Accreditation ◽  
Management Actions ◽  
Before And After ◽  
Quality Instruments ◽  
Quality Tools

Objective: to understand the changes in the management actions after the Hospital Accreditation. Methods: a case study. The study included 12 managers of a hospital accredited with excellence. Data collection was carried out with interviews with semi-structured and subjected to content analysis. Results: about changes in management actions were recorded significantly three categories: Work organization with quality tools; management actions before and after the accreditation; and challenges faced by modifying the management actions. Conclusion: accreditation mobilized changes in management actions with quality instruments of adoption used to organize the work and accountability of those involved in the process. However, there were challenges to be overcome to achieve accreditation by managers.

Case Study: Hillerich and Bradsby Company, Inc. Implementation of Just in Time Manufacturing

1995 ◽  
Vol 9 (3) ◽  
pp. 249-262 ◽  
Author(s):  
Lori K. Miller ◽  
Lawrence W. Fielding ◽  
Mahesh Gupta ◽  
Brenda G. Pitts
Keyword(s):  
Manufacturing Process ◽  
Production Efficiency ◽  
Just In Time ◽  
Paper Briefly ◽  
History Of ◽  
Kanban System ◽  
Market Leadership ◽  
Set Up ◽  
Supplier Partnerships

In this case study of Hillerich & Bradsby Company, Inc. (H&B), the ways in which H&B implemented principle components of Just In Time (JIT) Manufacturing in the production of wooden baseball bats are identified. Various JIT components such as small batch production, a cellular layout, multifunctional workers, reduced set-up times, empowered employees, the kanban system, and supplier partnerships are discussed and applied to H&B productions. An analysis of selected financial ratios indicated that JIT successfully contributed to the maintenance of H&B's production efficiency and market leadership. While the first section of the paper briefly outlines the history of the H&B company, the second section addresses the JIT manufacturing process. Seven principle components associated with the JIT manufacturing process are addressed and applied to H&B's operations. In conclusion the limitations associated with H&B's implementation of the JIT manufacturing process are identified.

scholarly journals Architectural and Urban Attractiveness of Small Towns: A Case Study of Polish Coastal Cittaslow Towns on the Pomeranian Way of St. James

Land ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 724
Author(s):  
Alicja K. Zawadzka
Keyword(s):  
Small Towns ◽  
Urban Life ◽  
Added Value ◽  
Development Policies ◽  
Quality Of Urban Life ◽  
Size Criterion ◽  
The Town ◽  
Modern Technologies

The paper presents the results of a study on the attractiveness to tourists and natives of the cultural qualities of coastal towns on The Pomeranian Way of St. James that are members of the Cittaslow network. Attention to the quality of urban life is inscribed in the development policies of towns applying to join the Cittaslow movement. In order to join the network (apart from the size criterion), towns need to meet a minimum of 50% plus one of the 72 criteria grouped into seven categories. One of the category is Quality of Urban Life Policy, so the towns applying to join Cittaslow commit themselves to actions aimed at improving the quality of urban life. The study on the attractiveness of cultural qualities of towns to tourists and natives was conducted using the author’s BRB method, whose added value is its universality and the possibility to study small towns regardless of their membership in the Cittaslow network. BRB is an acronym that stands for BUILDINGS, RELATIONSHIPS, BALANCE, and comprises three scopes of activities: BUILDINGS (iconic building and important sites where the inhabitants and the tourists are present); RELATIONSHIPS (the visual effects of the relations between the inhabitants and the town) and BALANCE (solutions that implement modern technologies). This method enables identification of places that are important to the inhabitants, where urban life takes place and which are often created with the involvement of the inhabitants. These are often the same spaces as those that attract tourists and perhaps stimulate them the desire to visit the town again (BRB—be right back). The aim of the BRB method is shown the attractiveness of small towns. The study has shown that the characteristic feature of Polish Cittaslow towns is their diversity: the architectural attractiveness of three towns is high both to tourists and natives. On the other hand, the urban attractiveness of the examined towns is an insufficient.

scholarly journals Investigating temperature breaks in the summer fruit export cold chain: A case study

2013 ◽  
Vol 7 (1) ◽  
Author(s):  
Heinri W. Freiboth ◽  
Leila Goedhals-Gerber ◽  
F. Esbeth Van Dyk ◽  
Malcolm C. Dodd
Keyword(s):  
Temperature Variation ◽  
South African ◽  
Temperature Data ◽  
Added Value ◽  
Cold Chain ◽  
The South ◽  
Export Supply ◽  
Cold Store ◽  
Summer Fruit

There is concern in the South African fruit industry that a large amount of fruit and money is lost every season due to breaks in the fruit export cold chain. The possibility of a large percentage of losses in a significant sector of the economy warranted further investigation. This article attempted to highlight some of the possible problem areas in the cold chain, from the cold store to the port, by analysing historic temperature data from different fruit export supply chains of apples, pears and grapes. In addition, a trial shipment of apples was used to investigate temperature variation between different pallets in the same container. This research has added value to the South African fruit industry by identifying the need to improve operational procedures in the cold chain.

scholarly journals Waste reduction of polypropylene bag manufacturing process using Six Sigma DMAIC approach: A case study

2021 ◽  
Vol 8 (1) ◽  
pp. 1896419
Author(s):  
Muhammad Hamad Sajjad ◽  
Khawar Naeem ◽  
Muhammad Zubair ◽  
Qazi Muhammad Usman Jan ◽  
Sikandar Bilal Khattak ◽  
...  
Keyword(s):  
Six Sigma ◽  
Manufacturing Process ◽  
Waste Reduction

Process Signature Modeling for Tolerance Analysis

2010 ◽  
Vol 10 (2) ◽  
Author(s):  
R. Ascione ◽  
W. Polini ◽  
Q. Semeraro
Keyword(s):  
Concurrent Engineering ◽  
Manufacturing Process ◽  
Tolerance Analysis ◽  
Actual Surface ◽  
Contact Points ◽  
Geometric Tolerances ◽  
Systematic Pattern ◽  
Process Signature ◽  
Nominal Surface

Many well-known approaches exist in the literature for tolerance analysis. All the methods proposed in the literature consider the dimensional and the geometric tolerances applied to some critical points (contact points among profiles belonging to couples of parts) on the surface of the assembly components. These points are generally considered uncorrelated since the nominal surface is considered. Therefore, the methods proposed in the literature do not consider the actual surface due to a manufacturing process. Every manufacturing process leaves on the surface a signature, i.e., a systematic pattern that characterizes all the features machined with that process. The aim of the present work is to investigate the effects of considering the manufacturing signature in solving a tolerance stack-up function. A case study involving three parts has been defined and solved by means of a method of the literature, the variational method, with and without considering the correlation among the points of the same surface due to the manufacturing signature. This work represents a first step toward the integration of the design and the manufacturing in a concurrent engineering approach.

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