Application of Six Sigma methodology in a small-scale foundry industry

2014 ◽  
Vol 5 (2) ◽  
pp. 193-211 ◽  
Author(s):  
E.V. Gijo ◽  
Shreeranga Bhat ◽  
N.A. Jnanesh
Keyword(s):  
Six Sigma ◽  
Single Case ◽  
Leaf Spring ◽  
Small Scale ◽  
Content Type ◽  
Foundry Industry ◽  
Small Scale Industry ◽  
Six Sigma Methodology ◽  
Finance Department

Purpose – The purpose of this article is to illustrate how the Six Sigma methodology was applied to a small-scale foundry industry to reduce the rejections and rework in one of its processes. Design/methodology/approach – The research reported in this paper is based on a case study carried out in an industry using the Six Sigma Define-Measure-Analyze-Improve-Control (DMAIC) approach and its application in improving the leaf spring manufacturing process of a foundry shop. Findings – The root causes for the problem of rejection and rework were identified through data-based analysis at different stages in the project. The process parameters were optimized and measures for sustainability of the results were incorporated in the process. As a result of this study, the overall rejection was reduced from 48.33 to 0.79 per cent, which was a remarkable achievement for this small-scale industry. This was leading to improvement in on-time delivery to the customer. The finance department of the company estimated the annualized savings due to the reduction in rejection and was to the tune of USD8,000 per year. Research limitations/implications – The paper is based on a single case study executed in a company, and hence, there is limitation in generalizing the specific results from the study. However, the approach adopted and the learning from this study can be generalized. Originality/value – This article illustrates the step-by-step application of Six Sigma DMAIC methodology in a small-scale foundry industry to solve an age-old problem in the organization. Thus, this article will be helpful for those professionals who are interested in implementing Six Sigma to such industries.

Competitive advantage through Six Sigma in sand casting industry to improve overall first-pass yield: a case study of SSE

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mihir Solanki ◽  
Darshak Desai
Keyword(s):  
Six Sigma ◽  
Sand Casting ◽  
Small Scale ◽  
Productivity Improvement ◽  
Content Type ◽  
Foundry Industry ◽  
Road Map ◽  
First Pass ◽  
Six Sigma Methodology

Purpose The purpose of this paper is to illustrate how Six Sigma methodology has been applied in a small-scale foundry industry to improve the overall first-pass material yield and quality, with a view to the product and the process. Design/methodology/approach The researchers have reported this paper based on a case study carried out in industry using the Six Sigma Define, Measure, Analyze, Improve and Control (DMAIC) and its application in improving the manufacturing process of a foundry shop. Findings Identified root causes are validated and countermeasures are implemented for improvement. As a result of this case study, the overall first-pass yield of the sand casting process is improved to 78.88% from the previous yield of 67%. For product-specific case, yield is improved by 18% through the improved gating system design. Sigma level of the process is improved to 3.08 from baseline 2.21. Key lessons learned from this case study are mentioned in the current study. Research limitations/implications This case study provides a standard road map and motivates small-scale foundry industries to implement Six Sigma methodology for productivity improvement, especially in jobbing foundry. The presented paper is based on a single case study, and the results are limited to the company only. Also, one of the reasons for low process yield is slag creation, which is not covered here, as it is a concern of the material quality supplied by the vendor. However, the approach of this paper is generic for learning perspective. Practical implications This case study provides a standard road map and motivates small-scale foundry industries to implement Six Sigma methodology for productivity improvement, especially in jobbing foundry. Through the effective application of Six Sigma quality initiative, how a quantum jump in financial aspect could be gain, has been demonstrated. Originality/value This research study showcases step-by-step implementation of Six Sigma-DMAIC methodology at a small-scale foundry industry. This paper could serve as a unique roadmap for practitioners and academicians to improve the material productivity of the foundry industry both ways, product and process.

Application of Lean Six Sigma methodology in the registration process of a hospital

2014 ◽  
Vol 63 (5) ◽  
pp. 613-643 ◽  
Author(s):  
Shreeranga Bhat ◽  
E.V. Gijo ◽  
N.A. Jnanesh
Keyword(s):  
Six Sigma ◽  
Single Case ◽  
Lean Six Sigma ◽  
Healthcare Sector ◽  
College Hospital ◽  
Content Type ◽  
Control Approach ◽  
Registration Process ◽  
Six Sigma Methodology

Purpose – The purpose of this paper is to study the scope of Lean Six Sigma (LSS) strategy and to explore its successful deployment in the Indian healthcare sector. Design/methodology/approach – The research reported in this paper is based on a case study carried out using the LSS DMAIC (Define-Measure-Analyze-Control) approach and its application in improving the registration process in the Health Information Department (HID) of a Medical College hospital in India. Findings – The study describes improvements in the HID through the power of LSS. Cycle time of the process was reduced from three to 1.5 minutes and the SD was reduced to 21.2 from 61 seconds. The project has shown a 94 per cent reduction in patients’ average waiting time. The study also reported a 91 per cent reduction in queue length and 48 per cent reduction in percentage of scheduled utilization of staff for the process. Research limitations/implications – The paper is based on a single case study executed in a hospital and hence there is limitation in generalizing the specific results from the study. But the approach adopted and the learning from this study can be generalized. The study is of use to healthcare practitioners seeking to implement or develop LSS further in their organizations. Originality/value – Although LSS being extremely successful in the last two decades, the application of LSS to the healthcare industry in general and HID in particular has been limited. This study illustrates how its application can improve the performance of the process and thus productivity in the department.

Lean Six Sigma strategy in telecom manufacturing

2014 ◽  
Vol 114 (6) ◽  
pp. 904-921 ◽  
Author(s):  
Roy Andersson ◽  
Per Hilletofth ◽  
Peter Manfredsson ◽  
Olli-Pekka Hilmola
Keyword(s):  
Supply Chain ◽  
Six Sigma ◽  
Single Case ◽  
Lean Six Sigma ◽  
Content Type ◽  
Strategic Emphasis ◽  
Company Culture ◽  
Difficult Times ◽  
Practical Implications

Purpose – The purpose of this paper is to elaborate, how the use of a joint-use strategy of Lean and Six Sigma can improve flexibility, robustness, and agility. Telecom manufacturing has been under tremendous change after dot.com bubble burst in the early 2000, and new competition has originated from Asia. Being successful requires now more than before, and joint-use of strategies is one option to survive. Design/methodology/approach – A single case study from a Swedish company operating in the telecom manufacturing was conducted. In particular, a Six Sigma project was followed and analyzed during 2002. However, the outcome of the Six Sigma project has been studied in longitudinal manner until 2014. Findings – The Lean Six Sigma strategy ensures flexible, robust, and efficient processes. However, to make them more agile in order to sustain in today's highly competitive environment, something more is required. This could include staff training, strengthening company culture and collaborating with key partners in the supply chain. Research limitations/implications – This study is limited to large company that usually has a lot of resources and choices where to put the strategic emphasis as well as has level of control of the supply chain operations. The situation could be very different in small and medium-sized companies and thus it may be more difficult to realize the Lean Six Sigma strategy in such environment. On the other hand, the processes in these companies are often less complex. Practical implications – This research provides guidance on how to manage the Lean Six Sigma strategy in order to ensure more flexible, robust, and efficient processes as well as how to perform a Six Sigma project in Lean environment, in a proper manner. Originality/value – This research provides guidance to companies regarding the applicability and properties of the Lean Six Sigma strategy. The paper will also serve as a basis for other companies and industries, on how to survive in difficult times.

Reducing failure rate at high voltage (HV) testing of insulator using Six Sigma methodology

2018 ◽  
Vol 67 (5) ◽  
pp. 791-808 ◽  
Author(s):  
Darshak A. Desai ◽  
Aurangzeb Javed Ahmed Shaikh
Keyword(s):  
Failure Rate ◽  
High Voltage ◽  
Six Sigma ◽  
Manufacturing Industry ◽  
Small Scale ◽  
Case Study Methodology ◽  
Content Type ◽  
Sigma Level ◽  
Ceramic Manufacturing

PurposeThis paper, a case study, aims to illustrate the application of Six Sigma in a small-scale ceramic manufacturing industry. The purpose of this paper is to demonstrate the empirical application of DMAIC methodology to reduce failure rate at high voltage (HV) testing of one of the most critical products, insulator.Design/methodology/approachThe case study is based on primary data collected from a real-life situation prevailing in the industry. The case study methodology adopted here is at one small-scale unit wherein the authors have applied DMAIC methodology and observed and recorded the improvement results, especially, reduction in failure rate at HV testing of insulator and, thus, increase in Sigma level.FindingsThe results found after implementation of the solutions are very significant. The rejection percentage has been reduced from 0.5 to 0.1 percent and consequently the Sigma level has been improved from 4.4 to 5.0.Research limitations/implicationsThis success story can be a guiding roadmap for other such industries to successfully implement Six Sigma to improve quality, productivity and profitability.Practical implicationsThis case study will serve as one of the resource bases for the industries which have till not implemented Six Sigma and benefited from the same.Social implicationsImproved quality and productivity leads to better economy. This case will help industries to serve the society with better economy with improved quality and productivity.Originality/valueThough ceramic industries in India are having enormous potential for growth, majority of them, especially, small and medium industries are either not aware of or not implementing Six Sigma to reap its multidimensional benefits of improving quality, productivity and profitability. This study highlights the benefits reaped by small-scale ceramic manufacturing industry opening up the avenues for its application at other such organizations.

Lean Six Sigma in higher education institutes: an Irish case study

2019 ◽  
Vol 10 (4) ◽  
pp. 948-974 ◽  
Author(s):  
Seamus J. O’Reilly ◽  
Joe Healy ◽  
Tom Murphy ◽  
Rónán Ó’Dubhghaill
Keyword(s):  
Higher Education ◽  
Six Sigma ◽  
Single Case ◽  
Lean Six Sigma ◽  
Research Approach ◽  
Content Type ◽  
Training Programmes ◽  
The Impact

Purpose This paper aims to contribute to a developing literature on continuous improvement (CI), enabled by Lean Six Sigma (LSS), in higher education institutions (HEIs). It reports on the key learning points arising from the initial steps taken by an Irish university on its CI journey. Design/methodology/approach A case study strategy was adopted following a participatory research approach. This approach supports reflexivity and also provides access to all relevant documentation and staff within the case university. Thematic analysis was supported by data reduction and display techniques. Findings The introduction of a LSS approach rather than a reliance on lean alone introduced a structured methodology (DMAIC) that supported simplification of a number of administrative processes. A number of specific improvements were achieved including: Cycle time and cost reduction; customer or employee satisfaction; and rework and error reduction. The findings support the importance of the Readiness Factors as identified by Antony (2014), with particular insight into the role of senior and middle management, the impact of training and deployment of expertise. Research limitations/implications This paper is based on an ongoing, longitudinal, empirical study of a single case study in Ireland. Originality/value This paper tracks the development of CI in a HEI in a longitudinal manner and adds to the emerging the literature in this area. The paper evaluates the role of management at various levels, analyses the use of LSS tools and techniques and evaluated the role of training and capacity building. Implications for Management are shared including: design and role of training programmes, role of champions at various organisational levels, including key functional areas and sustaining momentum.

Lean Six Sigma in policing services

2018 ◽  
Vol 67 (5) ◽  
pp. 935-940 ◽  
Author(s):  
Jiju Antony ◽  
Bryan Rodgers ◽  
Inness Coull ◽  
Vijaya Sunder M.
Keyword(s):  
Six Sigma ◽  
Design Methodology ◽  
Single Case ◽  
Lean Six Sigma ◽  
Single Case Study ◽  
Content Type ◽  
The Public ◽  
Study Approach ◽  
Learning Points

Purpose This paper is based on a single case study carried out as part of a change programme but is used as a reflective tool to draw on some of the wider organisational learning which can be considered when implementing, reviewing or re-energise a Lean Six Sigma (LSS) Programme. The paper aims to discuss this issue. Design/methodology/approach A case study approach has been used and referenced throughout the paper with references to literature to support the wider learning points drawn which are then applied to any continuous improvement (CI) programmes. Findings The paper presents a range of learning points which are drawn from a successful deployment of LSS within a change project carried out as part of an overall programme in Scottish policing services. Research limitations/implications The points are drawn from a single case study which was deployed within a wider change programme and is supported by wider literature but is used as a vehicle for informing strategic considerations within an organisation. Originality/value This case study is drawn from policing services in the public sector which alone is an area that has not been significantly studied. It is used to explore wider implications in terms of strategic alignment, organisational performance and project management and presents the argument that the design of a CI programme is much wider than the implementation of LSS itself.

Implementing a Lean Six Sigma standardized toolset in a manufacturing company: a case study

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Nikolaos A. Panayiotou ◽  
Konstantinos E. Stergiou ◽  
Vassilis Chronopoulos
Keyword(s):  
Case Studies ◽  
Six Sigma ◽  
Success Factors ◽  
Manufacturing Sector ◽  
Lean Six Sigma ◽  
Small Scale ◽  
Manufacturing Companies ◽  
Content Type ◽  
Manufacturing Company

PurposeThe first purpose of this paper is the implementation of Lean Six Sigma (LSS) in a manufacturing company operating in South East Europe in order to understand the importance of critical success factors (CSFs) in LSS adoption and to find out the benefits that the company gained. The second purpose is to propose a standardized toolset based on DMAIC phases, for the application of LSS in small scale projects, in order to facilitate LSS adoption by more manufacturing companies.Design/methodology/approachThis case study is based on the interlacement of the Yin's method about case studies and the DMAIC method for the improved deployment of LSS.FindingsThe analysis of this case study shows that the company attained to benefit financially, operationally and organizationally from the implementation of LSS. The already existing mentality of CI inside the company helped the project procedure and the application of changes and improvements fulfilling LSS adoption CSFs.Practical implicationsThe paper constructs a toolset and studies the role of CSFs in order to achieve the desirable benefits in a manufacturing environment, constituting a guide for future LSS initiatives.Originality/valueAs stated by literature reviews, even though there are several papers concerning LSS implementation in the manufacturing sector, there is a need for more case studies papers, such as this one, in order to enrich the literature. In this paper, it is also the first time that a specific toolset for small scale projects is proposed based on to DMAIC which can be implemented in further LSS projects.

Application of Lean Six Sigma in conservative dentistry: an action research at an Indian dental college

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ajay Noronha ◽  
Shreeranga Bhat ◽  
E.V. Gijo ◽  
Jiju Antony ◽  
Suma Bhat
Keyword(s):  
Action Research ◽  
Six Sigma ◽  
Single Case ◽  
Lean Six Sigma ◽  
Lessons Learned ◽  
Healthcare Sector ◽  
Content Type ◽  
Conservative Dentistry ◽  
Tools And Techniques

PurposeThe article evaluates the obstacles, lessons learned and managerial implications of deploying Lean Six Sigma (LSS) in a dental college hospital in India.Design/methodology/approachThe work adopts the action research (AR) methodology to establish a case study, which is carried out using the LSS define–measure–analyze–improve–control (DAMIC) approach in a dental college. It uses LSS tools to enhance the productivity and performance of the Conservative Dentistry Department of a dental college and to unravel the obstacles and success factors in applying it to the education and healthcare sector together.FindingsThe root cause for high turn-around time (TAT) is ascertained using LSS tools and techniques. The effective deployment of the solutions to the root causes of variation assists the dental college to reduce the TAT of the Conservative Dentistry process from an average of 63.9 min–36.5 min (i.e. 42.9% improvement), and the process Standard Deviation (SD) was reduced from 2.63 to 2 min. This, in turn, raises the sigma level from 0.48 to 3.23, a noteworthy successful story for this dental college.Research limitations/implicationsWhile the results and recommendations of this research are focused on a single case study, it is to be noted that the case study is carried out with new users of LSS tools and techniques, especially with the assistance of interns. This indicates the applicability of LSS in dental colleges; thus, the adopted modality can be further refined to fit India's education and hospital sector together.Originality/valueThis article explains the implementation of LSS from an aspiring user viewpoint to assist dental colleges and policymakers in improving competitiveness. In addition, the medical education sector can introduce an LSS course in the existing programme to leverage the potential of this methodology to bring synergy and collaborative research between data-based thinking and the medical field based on the findings of this study. The most important contribution of this article is the illustration of the design of experiments (DOE) in the dental college process.

Impacts of Kaizen in a small-scale industry of India: a case study

2014 ◽  
Vol 5 (1) ◽  
pp. 22-44 ◽  
Author(s):  
Amit Kumar Arya ◽  
Sanjiv Kumar Jain
Keyword(s):  
Poor Quality ◽  
Value Stream Mapping ◽  
Small Scale ◽  
Content Type ◽  
Value Stream ◽  
Small Scale Industry ◽  
Production Techniques ◽  
Small Industries ◽  
Small Scale Industries

Purpose – A large number of small-scale industries have shown their existence in India, tough competition among them made the survival of small industries difficult. All facing problems like reduced production and poor quality. The case study presented in the paper deals with Kaizen implementation in a machine vice manufacturer company. Kaizen has tremendous impacts on the production techniques and lead times. Case study represented is to motivate practitioners for implementing Kaizen in small-scale industries of India. The paper aims to discuss these issues. Design/methodology/approach – The methodology applied to implement the Kaizen in Indian small-scale industry. Fishbone diagrams have been used to represent cause and effects. The result has been shown as savings in terms of money and time. Findings – Processing time has been reduced by 44.4 percent and an amount of Rs. 64,000 has been saved by recovering a total of 80 square feet working area. Improvements in the form of work flow have been achieved. Research limitations/implications – Value stream mapping can be integrated with Kaizen for more reduction in the product lead time. Practical implications – The paper will be worthily for practitioners and consultants for understanding Kaizen implementation in small-scale industry of India. Originality/value – The paper yields lots of values for practitioners to understand the impacts and significance of the Kaizen in small-scale industries of India. Also it bridges the gap between theory and practical of Kaizen implementation in small-scale industry of India.

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