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Aluminum Alloy Vacuum Die-casting Assistant System Development

Executive Summary

As automotive lightweight aluminum alloy die castings demand and quality requirements increase, the

vacuum casting technology popularization and application more urgent. Vacuum- assisted systems are

vacuum die casting technology application of key equipment, a direct impact on production efficiency and

vacuum vacuum die casting quality . Currently on the market mainly by Fondarex, Toshiba, Ube otherproducts occupy the market, but the purchase of equipment investment, high maintenance costs . Domestic

mainly pine celebrate automation, automation and other seismic sector companies, but are still in the

development stage of perfection , equipment, work processes and casting quality is unstable . The issue of

the existing vacuum casting technology , based on the actual production needs , developed with independent

intellectual property rights of vacuum die auxiliary systems. The exhaust gas by the vacuum die casting

model calculation and analysis, using the \high sensitivity and reliability ; using \The topics were evacuating

the system verification test and the actual production . Ws70 agreeable with the molding machine on the

vacuum system capacity test results show that : The system does not use a special sealing measures molds in

the mold cavity within the 1s in 2500Pa less degree of vacuum , vacuum die to meet the needs . Toshiba

250T die casting machine for the actual production verification showed that: vacuum valve high sensitivity

and reliable operation ; control system is easy to operate , safe and reliable. By ordinary casting and vacuum

die casting X-Ray detector comparison shows : Use this topic auxiliary systems developed by vacuum die

casting production vacuum pores defects decreased significantly. This topic close to the market performance

of the system developed by advanced vacuum casting auxiliary systems.

Abstract 4-5

Abstract 5-11

first chapter 11-28

1.1 casting technology 11-18

1.1.1 casting real advantages and disadvantages 11-13

1.1.2 casting porosity defects causes and solutions 13-18

1.2 vacuum casting technology 18-20

1.2.1 vacuum die technical advantages 18-19

1.2.2 vacuum die casting market prospects 19-20

1.2.3 Vacuum casting technology 20

1.3 vacuum die Assist System Research 20-26

1.3.1 support system at home and abroad mainly introduce vacuum die 20-24

1.3.2 types of vacuum casting system is relatively 24-26

1.4 research content and meaning 26-28

1.4.1 Significance of research 26-27

1.4.2 research content 27-28

Chapter vacuum die Assist program analysis and design 28-44

2.1 Vacuum Die exhaust theory 28-29

2.2 evacuated program options analysis 29-37

2.2.1 Scoping vacuum die vacuum 29

2.2.2 vacuum vacuum die main program 29-30

2.2.3 Vacuum Die exhaust theoretical calculations 30-35

2.2.4 Factors affecting the efficiency of the system analysis 35-36

2.2.5 vacuuming program to determine 36-37

2.3 vacuum valve work program to determine 37-392.4 overall system programs and works 39-43

2.4.1 system overall program 39-41

2.4.2 System Works 41-43

2.5 Summary 43-44

Chapter vacuum valve design and manufacturing 44-53

3.1 vacuum valve parts design and manufacturing requirements 44

3.2 vacuum valve material Select 44-45

3.3 vacuum valve design 45-48

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3.4 Main parts processing technology 48-50

3.5 vacuum valve assembly 50-52

3.5.1 each component mounting requirements and solutions 50-51

3.5.2 vacuum valve and the mold assembly 51-52

3.6 Summary 52-53

Chapter IV control system design and implementation 53-66

4.1 Control system design requirements 534.2 Control System overall program 53-57

4.2.1 System control scheme selection 53-55

4.2.2 Major equipment selection 55-57

4.3 control system 57-65

4.3.1 System Communication 57

4.3.2 PLC programming 57-58

4.3.3 Analog The input signal processing 58-60

4.3.4 pneumatic control design 60-61

4.3.5 HMI design 61-65

4.4 Summary 65-66

Chapter actual production system performance testing and validation 66-72

5.1 evacuating the mold cavity theoretical verification 66-67

5.1.1 authentication methods and verification platforms 66

5.1.2 Analysis 66-67

5.2 vacuum performance test 67-69

5.2.1 Test methods and test platforms 67-68

5.2.2 Test Results 68-69

5.3 actual production verification 69-71

5.4 Summary 71-72

Chapter VI Conclusion and Outlook 72-74

6.1 Conclusion 72-73

6.2 Prospects 73-74

References 74-77

stage graduate students involved in research projects and published papers 77-78

Thanks 78-79

Appendix 79-81

Scenario II Appendix A theoretical calculation Matlab program 79-80Appendix B PLC program instruction sheet 80-81

Appendix C control cabinet Outline 81