مشروع تخرج بعنوان Statistical Process Control (SPC) Application in (PP-R) Pipes Industry in Egypt

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Statistical Process Control (SPC) Application in Polypropylene (PP-R) Pipes Industry in Egypt

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Contents . I
About Alamal Plastic Pipes ( Elsharif ) I
INTRODUCTION   . 2
CHAPTER 1    . 5
QUALITY CONTROL    5
1.1 INTRODUCTION    5
1.2 QUALITY   . 6
1.2.1 Fundamental Factors Affecting Quality    6
1.3 CONTROL    8
1.3.1 Need for Controlling Quality   . 8
1.4 INSPECTION    9
1.4.1 Objectives of Inspection    9
1.4.2 Purpose of Inspection   . 10
1.4.3 Methods of Inspection    10
1.4.4 Drawbacks of Inspection   . 11
1.5 QUALITY CONTROL   . 12
1.5.1 Types of Quality Control    12
1.5.2 Steps in Quality Control   . 13
1.5.3 Objectives of Quality Control    14
1.5.4 Benefits of Quality Control   . 15
1.5.5 Seven Tools for Quality Control    15
1.5.6 Causes of Variation in Quality   . 20
CHAPTER 2   . 23
POLYPROPYLENE RAW MATERIAL . 23
2.1.CHEMICAL AND PHYSICAL PROPERTIES   23
2.1.1Degradation    . 24
2.2. HISTORY   . 24
2.3.SYNTHESIS    25
2.4.PROCESSING OF RAW MATERIAL   27
2.5.PRODUCTS MANUFACTURING   27
2.6.DEVELOPMENT TRENDS    28
2.7.APPLICATIONS   . 28
2.8.RECYCLING    29
2.9.REPAIRING    29
2.10.HEALTH CONCERNS   . 30
2.11.INSPECTION OF RAW MATERIAL IN THIS CASE STUDY . 30
CHAPTER 3   . 32
(THERMO FORMING PROCESSES)   32
1.3.EXTRUSION    32
1.3.3Plastic Extrusion:    32
1.3.3.Overview     33
1.3.1.Screw Design    35
1.3.3.Components Of Plastic Extruder:   . 35
1.3.3. Plastic tubing     36
1.3.3. Applications Of Plastic Tubing -:   . 36
1.3.3.Characteristics Of Plastic Tubing-:    37
1.3.3.Types of Plastic Tubing   . 38
1.3. INJECTION MOLDING    39
1.3.3.Close Mould     39
1.3.3.Inject Molten Plastic    40
1.3.1. Hold Mould Closed    40
1.3.3. Open Mould and Eject Part    41
1.3.3.PLASTIC INJECTION MOULDING MACHINE . 42
CHAPTER 4   . 45
STATISTICAL PROCESS CONTROL METHODS   45
4.1. SOURCES OF PRODUCT VARIATION   45
4.2. SPC PRINCIPLES    46
4.3. RATIONAL SUBGROUPS    47
4.4. USES OF CONTROL CHARTS . 48
4.4.1. Define the objectives    50
4.4.2. Analyze the production process    50
4.4.3. Select the characteristics to control   . 50
4.4.4Determine the proper control chart    50
4.4.5. Collect the data    . 51
4.4.6Interpret control chart run rules    52
4.5.TYPES OF RESPONSE ERRORS   56
4.6.STATISTICAL PROCESS CONTROL (SPC) METHODS: 57
CHAPTER 5   . 60 THE DIFFERENT MECHANICAL AND THERMAL TESTS THAT CARRIED OUT ON PLASTIC PIPES   60
الاختبارات التي تجرى على مواسير PPR . 60
اختبار الصدمات:     60
اختبار الصلادة :    . 60
اختبار الانكماش )الارتداد الطولي ( :   . 60
اختبار الليونة :     61
اختبار الشد:     61 CHAPTER 6   . 64 CONSTRUCTION OF CONTROL CHART . 64
6.1. TENSION TEST   . 64
6.1.1. Construction of I-MR Chart   . 64
6.2. IMPACT TEST   . 66
6.2.1. Construction of p-chart   . 66
6.2.2. The revised control chart:    67
6.3. HEATED TEST   68
6.3.1. Construction of I-MR chart    68
6.4. THICKNESS TEST   . 70
6.4.1. Construction of X-bar and R chart    70
6.4.2. The revised control chart:    72
6.5. PROCESS CAPABILITY RATIO: . 73
6.5.1. Tension Test    . 73
6.5.2. Impact Test    . 74

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