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GB/T 33488.4-2017: Test method of pressure equipment of thermoplastics welded for chemicals -- Part 4: Ultrasonic examination
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Test method of pressure equipment of thermoplastics welded for chemicals -- Part 4: Ultrasonic examination
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GB/T 33488.4-2017
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Basic data | Standard ID | GB/T 33488.4-2017 (GB/T33488.4-2017) | | Description (Translated English) | Test method of pressure equipment of thermoplastics welded for chemicals -- Part 4: Ultrasonic examination | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G94 | | Classification of International Standard | 71.120; 59.100 | | Word Count Estimation | 16,150 | | Date of Issue | 2017-02-28 | | Date of Implementation | 2017-09-01 | | Quoted Standard | GB/T 27664.1; GB/T 27664.2; GB/T 27664.3; GB/T 33488.1 | | Regulation (derived from) | National Standard Announcement No. 4 of 2017 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the general requirements, parameter setting, testing procedures and test reports for ultrasonic testing methods for chemical welding equipment for chemical industry. This standard is suitable for the use of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), propylene - butadiene - styrene plastic (ABS), polyvinylidene fluoride (PVDF) (PTFE) and other thermoplastic plastic pipe or plate, and the use of hot air welding, extrusion welding, hot melt welding and welding process welding pressure vessel and pressure pipe welded joints A-type pulse reflection ultrasonic testing. | GB/T 33488.4-2017: Test method of pressure equipment of thermoplastics welded for chemicals -- Part 4: Ultrasonic examination
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Test method of pressure equipments of thermoplastics welded for chemicals - Part 4. Ultrasonic examination
ICS 71.120; 59.100
G94
National Standards of People's Republic of China
Chemical plastic welding system with pressure equipment
Methods of test - Part 4. Ultrasonic testing
weldedforchemicals-Part 4. Ultrasonicexamination
2017-02-28 released
2017-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface III
1 Scope 1
2 normative reference document 1
3 Terms and definitions 1
General requirements
4.1 Personnel 1
4.2 Agency 1
4.3 Environmental conditions 2
4.4 Equipment and equipment 2
5 parameter setting 3
5.1 General 3
5.2 Test block 3
5.3 Scan sensitivity 5
5.4 Transmission Amendment 5
5.5 Signal to noise ratio 5
5.6 probe and sound speed 5
6 detection process 5
6.1 Preparation before testing 5
6.2 Surface cleaning of welded joints 5
6.3 Detection area determination 6
6.4 Detection technology selection 7
Classification and evaluation of weld quality
7.1 defect record 8
7.2 Defect Quantification 8
7.3 Defect assessment 9
7.4 Quality rating 9
8 Test Report 9
Appendix A (informative) Ultrasonic testing report format 11
Reference 12
Figure 1 vertical incidence of longitudinal wave detection test block 3
Figure 2 oblique incidence of longitudinal wave detection test block 4
Figure 3 tandem test block 4
Figure 4 climbing test block 4
Figure 5 Welded joint 6
Figure 6 vertical incidence of longitudinal wave detection diagram 7
Figure 7 Schematic diagram of oblique incident longitudinal wave detection
Figure 8 tandem detection diagram 8
Figure 9 creep detection diagram 8
Table 1 Sensitivity and Scanning Range Correction 3
Table A.1 Ultrasonic Testing Report for Pressure Welding Equipment (UTReport) 11
Foreword
GB/T 33488 "Chemical plastic welding system with pressure equipment inspection method" is divided into four parts.
- Part 1. General;
Part 2. Appearance inspection;
Part 3. Ray detection;
- Part 4. Ultrasonic testing.
This part is part 4 of GB/T 33488.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This section is proposed by the China Petroleum and Chemical Industry Association.
This part is headed by the National Standardization Technical Committee for Nonmetallic Chemical Equipment (SAC/TC162).
This part of the drafting unit. Ningbo Special Equipment Inspection and Research Institute, Sichuan Institute of Technology, Guangzhou Special Pressure Equipment Testing and Research Institute, Shanghai
City Special Equipment Supervision and Inspection Technology Research Institute, Xi'an Plastic Dragon Welding Equipment Co., Ltd., Wenzhou Fausta Youli Fluid System Co., Ltd., long
Spring City Product Quality Supervision and Inspection Institute, Chengde City Precision Testing Machine Co., Ltd., Hubei Yong Sheng Plastic Pipe Industry Co., Ltd., Xinjiang Uygur
Autonomous Region Special Equipment Inspection and Research Institute.
The main drafters of this part are. Chen Dingyue, Li Jun, Li Maodong, Zheng Wangping, Zhao Feng, Xiao Yugang, Tian Boyang, Wang Xinhua, Xie Junming, Li Qiang,
Huang Hui.
Chemical plastic welding system with pressure equipment
Methods of test - Part 4. Ultrasonic testing
1 Scope
This part of GB/T 33488 specifies the general requirements for the ultrasonic testing method for chemical welding equipment for chemical industry, parameter setting, inspection
Test procedures and test reports.
This part is suitable for the use of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), acrylonitrile - butadiene - styrene plastic (ABS)
Polyvinylidene fluoride (PVDF) and modified polytetrafluoroethylene (PTFE) and other thermoplastic pipe or sheet, and the use of hot air welding, extrusion welding, hot melt
Welding and soldering process welding of pressure vessels and pressure piping welded joints by type A pulse reflection method for ultrasonic testing.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 27664.1 Non-destructive testing - Performance and testing of ultrasonic testing equipment - Part 1. Instrument
GB/T 27664.2 Non-destructive testing - Performance and testing of ultrasonic testing equipment - Part 2. Probes
GB/T 27664.3 Non-destructive testing - Performance and testing of ultrasonic testing equipment - Part 3. Combined equipment
GB/T 33488.1 Test methods for pressure welding equipment for plastics used in chemical industry - Part 1. General
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Focus probe
The use of lens, reflective and curved lenses and other focusing methods, so that the ultrasonic beam convergence to improve the detection sensitivity of the ultrasonic probe.
3.2
Vertical incidence normalincidence
Incident wave wave front normal perpendicular to the media interface when the incident, also known as normal incidence.
4 General requirements
4.1 Personnel
Ultrasonic testing personnel should be in accordance with the requirements of GB/T 33488.1 to obtain the appropriate qualification level certificate, but also understand the basis of thermoplastic
The knowledge, familiar with the plastic welding joint process, familiar with the acoustic properties of thermoplastic materials and the type of joint to be welded, to master the plastic welded joints
Ultrasonic testing methods.
4.2 institutions
The ultrasonic testing mechanism shall comply with the provisions of GB/T 33488.1.
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