HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY FOR HIGH QUALITY TRAINING GRADUATION THESIS ANALYSIS OF QUALITY CONTROL AT KRUGER VIETNAM FACTORY Name : HO QUOC LAP Student ID: 19124075 Major : INDUSTRIAL MANAGEMENT Supervisor: NGUYEN THI ANH VAN, MBA Ho Chi Minh City, May 2023 HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY FOR HIGH QUALITY TRAINING GRADUATION THESIS ANALYSIS OF QUALITY CONTROL AT KRUGER VIETNAM FACTORY Name : HO QUOC LAP Student ID: 19124075 Major : INDUSTRIAL MANAGEMENT Supervisor: NGUYEN THI ANH VAN, MBA Ho Chi Minh City, May 2023 COMMENTS OF ADVISOR ----------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------- 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----------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------- HCMC, ……/05/2023 Reviewer ACKNOWLEDGEMENTS During training and knowledge exchange at the school, the author would like to thank the teachers of the Faculty of High-Quality Training in Industrial Management for providing the author with much practical, precious knowledge. This is considered a solid premise for the author to take a step forward, an overview to help the author discover the sky of knowledge and receptivity at work. In particular, the author did not forget to express her deepest gratitude to Ms. Nguyen Thi Anh Van - the Quality Management Department lecturer under the Faculty of Economics, Ho Chi Minh City University of Technology and Education.
Thank you for always supporting, helping, and orienting the author in the process of making the report and as a guideline to help the author orient himself in the future. During the implementation of the report, the author would like to thank the leaders of Kruger Vietnam Ventilation Industry Co., the Quality Control Department, and all the staff in the project. Other departments have always created conditions, helped, and created the most comfortable atmosphere for the author to have the opportunity to study, improve knowledge, and have practical contact with the production environment at the enterprise. Finally, the author would like to thank all of you at the Quality Assurance department for your guidance and help and for providing the author with the necessary documents so that the author can do the work smoothly and complete the best report.
Ho Chi Minh City, 28/04/2023 Student name Lap Ho Quoc Lap i LIST OF ABBREVIATION Abbreviation Explanation AHP Analytic Hierarchy Process AQL Acceptance Quality Limit IQC Input Quality Control KVN Kruger Vietnam NCR Nonconformance Report NG Not Good QC Quality Control SA Shipment Advise ii LIST OF TABLE Table 1.1: The milestones of the formation and development of Kruger corporation and Kruger Vietnam.2: Typical fan lines at KVN, illustrations and applications.1:Tole sampling plan table.2: Input Tole Quality Control Process.3:Quality control process in finished product warehouse area.1: Statistical table of the number of fans produced in KVN.2: Statistical table of common errors at KVN (unit: 1 piece).3: Questionnaire to survey experts' opinions with factors suggested by the author.4: Table of first round Delphi interview results.6: Typical pairwise comparison scale for the AHP method.7: Priority assessment table for criteria pairs.8: Pair-wise comparision matrix.9: Normalised Pair-wise comparision matrix.10: RI values for the different values of n.11: Summary of the weights of the criteria, the weight of each criterion and consistent vector.12: Ranking of weights for each indicator in terms of importance.13: Assembly manual recommended by the author.14: Hub semi-finished test sheet suggested by the author……………………64 iii LIST OF FIGURE Figure 1.1: Head office of Kruger Vietnam company.2: Logo of Kruger Vietnam Ventilation Industry Co.3: Organization chart of the company Kruger Vietnam.1: Illustration of TDA fan series.2: TDA fan components indicated.3: The process of checking the quality of input materials.4: Tole is placed on a pallet and secured with a steel belt.5: Motor before quality check.6: Standard Name Plate of Motor.7: Motor in stock after quality inspection from IQC department.8: Tube Casing finished product.9: Tole received from warehouse staff before putting into production.10: Pareto chart showing errors at Tube Casing assembly area in the first 3 months of 2022.11: Technical drawing of TDA propeller.12: Image of motor base, motor supt.13: Stage 1 assembling TDA fan.14: Stage 2 assembling TDA fan.15: Hub semi-finished products.16: Stage 3 assembling TDA fan.17: Stage 4 assembling TDA fan.18: Measuring device for balance and vibration of N600 fan used at KVN .1: Pareto chart of common types of errors at KVN.2: Cause-and-effect diagram of the causes of the error of bolt-nut confusion when assembling.3: Cause-and-effect diagram of the causes of incorrect and uneven Hub size reaming errors.4: Bolt-nut identification sticker at the assembly suggested by the author .i LIST OF ABBREVIATION. ii LIST OF TABLE. iii LIST OF FIGURE. iv INTRODUCTION TO THE REPORT.
Objectives of the study. Research objective and research scope of the topic. Structure of thesis. 2 CHAPTER 1: OVERVIEW ABOUT KRUGER VENTILATION INDUSTRIES VIETNAM CO.
Product lines of the company Kruger Vietnam. Company organization chart. 9 CHAPTER 2: LITERATURE REVIEW. Some basic concepts of quality.
Some stastistical process control (SPC) tools. Cause – Effect Diagram. Some methods applied in the process of finding the cause of the error. 16 CHAPTER 3: ANALYSIS OF THE CURRENT SITUATION OF QUALITY CONTROL OF TDA FANS AT KRUGER VIETNAM FACTORY.
Overview of TDA - Direct driven tube axial fan. Quality control of input materials at IQC department. Tole quality check at the factory. Check motor quality at the factory.
Quality control in production and assembly areas. Semi-finished production area. Quality control at the assembly area. Quality control at the finished product warehouse area.
Evaluation of quality control activities at Kruger Vietnam factory.42 CHAPTER 4: PROPOSED SOME SOLUTIONS TO IMPROVE QUALITY CONTROL OF TDA SERIES - DIRECT DRIVEN TUBE AXIAL FAN AT KRUGER VIETNAM COMPANY. Using statistical tools to assess the status of quality control at KVN. Causes of common errors. Application of the Delphi method and AHP method to find out the cause of bolt-nut confusion error when assembling ……………………………………….
Research process and application of the Delphi method. Rank the importance of each factor based on the application of the AHP method. Build documentation, visualize bolt-and-nut boxes. Set up and apply the check sheet in Hub semi-finished product quality inspection stage.
69 vii INTRODUCTION TO THE REPORT 1. Introduction Improving product quality is one of the shortest ways for companies to bring their products closer to customers, the strategy that brings the highest economic efficiency. Besides, it helps businesses develop stably and sustainably and is one of the golden keys to helping the company recover from the Covid-19 crisis. In recent years, along with the development of industrial parks, commercial centers, and high-rise buildings, industrial fans have become more popular and necessary than ever because of their use and importance.
Along with the requirements of increasingly modern life, most human activities and work are carried out in a closed environment, and the opportunity to be immersed in the pure atmosphere of nature is extremely low. That is why the ventilation fan industry is developing more and more, helping regulate and circulate air and removing toxic substances and gases, providing a clean environment for living and production. With its equally important role and customers' needs, the TDA Series - Direct Driven Tube Axial Fan is considered one of the best-selling items and contributes a significant part to the revenue of Kruger Vietnam. However, the quality control of products from input to storage is not strict and uneven, leading to alarmingly unsatisfactory products when leaving the warehouse, generating more errors and causing problems.
Orders are delayed and add more costs to the factory. Therefore, the quality control department plays an equally important role as one of the decisive factors for the success or failure of the company. Because of these reasons, during the internship at Kruger Ventilation Industry Co., the author chose the topic "Analysis of quality control at Kruger Vietnam factory." With this topic, the author hopes to help the company have an overview from which to identify some outstanding problems to eliminate the existing errors at the factory, aiming to improve productivity, high product quality, and efficiency in factory production. Objectives of the study - Analyze and evaluate the quality control status in the production area of TDA fans and identify some common quality inspection errors.
- Propose solutions to improve the product quality of TDA fans and some remaining errors in quality control of input and finished products 3. Research objective and research scope of the topic - Research object: quality control process of TDA fan series at Kruger Vietnam factory - Research scope: TDA fan series at KVN - Time: July 2022 - September 2022 4. Research methodology Methods of data collection - Secondary data: Includes relevant documents from factory departments. - Primary data: All data collected from experts survey and the QC department of the Kruger Vietnam factory Expert interviewing techniques - Observing and monitoring the production process, interviewing and consulting with employees in the workshop.
- Apply the Delphi expert interview method. AHP Method - Using the AHP approach to rank each element's relevance, thereby picking the factors with the greatest influence on the errors encountered during the KVN quality control stage. Structure of the thesis Chapter 1: Introduction to Kruger Vietnam company Chapter 2: Literature review 2 Chapter 3: Analysis of the current situation of quality control of TDA fans at Kruger Vietnam factory Chapter 4: Proposed some solutions to improve quality control of TDA series - direct driven tube axial fan at Kruger Vietnam company 3 CHAPTER 1: OVERVIEW OF KRUGER VENTILATION INDUSTRIES VIETNAM CO. Business overview General information Company name: Kruger Ventilation Industries Vietnam Co., Ltd Short name: Kruger Vietnam (KVN) Representative: Mr.
Nguyen Thanh Toan Tax code: 3900877938 Operation date: December 31, 2009 Tel: 0276 3585 200 Email: mktg@krugervn.com Website: https://www.1: Head office of Kruger Vietnam company Source: Company Website Line of business: Producing and processing ventilation equipment; exercising the right to export and import exhaust fans and accessories; Repairing machinery and equipment. Main activities KVN: importing components and equipment from Kruger Ventilation Industries Pte Ltd, assembling them into finished products, then selling 4 them directly to construction projects within the territory of Vietnam, without intermediaries or agents. Address: The company's head office is at Lot A7.2-4, Road C2, Thanh Thanh Cong Industrial Park, An Hoa Ward, Trang Bang Town, Tay Ninh Province, Vietnam. In addition, the company also has representative offices in provinces such as Ho Chi Minh City, Hanoi, and Da Nang.
Company's logo: Figure 1.2: Logo of Kruger Vietnam Ventilation Industry Co., Ltd Source: Company Website Mission and vision Vision: Kruger's will be an Asia regional ventilators supplier acknowledged as an innovative leader by our customers, workers, and shareholders, adopting an unwavering focus on producing value and a commitment to Total Excellence for our customers. Mission: Kruger's is dedicated to arranging our strengths and resources via cooperation with honesty, effort, and adaptability to achieve Total Excellence. History of formation and development Established in Singapore in 1985, Kruger Ventilation Group is a full subsidiary of Soler & Palau Ventilation Group, headquartered in Spain. Kruger is a leading provider of energy-efficient ventilation solutions for residential and commercial buildings and industrial and infrastructure applications.
Currently, Kruger has established 18 5 business units in the Asia Pacific Region. Kruger Vietnam is one of Solar & Palau Ventilation Group's subsidiaries with 100% investment capital from Spain.1: The milestones of the formation and development of Kruger corporation and Kruger Vietnam Time Events 01/1985 The first Kruger was established in Singapore 05/1988 Entered into cooperation with Kruger Holding AG Switzerland. 12/1988 Established Kruger Ventilation Company in Singapore. 03/2003 Soler & Palau Ventilation Group acquires a 25% stake in Kruger Asia Holding.
08/2004 Expanding factories in many countries in the Asia Pacific region. 12/2004 Established subsidiaries and manufacturing plants in 13 locations across the Asia Pacific Region. 01/2005 Established Kruger Research Group with Asia's First AMCA Certified Laboratory.