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Metallic materials -- Welding residual stresses -- Method with explosion treatment
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GB/T 26078-2010
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Basic data | Standard ID | GB/T 26078-2010 (GB/T26078-2010) | | Description (Translated English) | Metallic materials -- Welding residual stresses -- Method with explosion treatment | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H22 | | Classification of International Standard | 77.040.10 | | Word Count Estimation | 11,158 | | Date of Issue | 1/10/2011 | | Date of Implementation | 10/1/2011 | | Quoted Standard | GB 6722; GB 8031; GB 9786; GB 19417; GB/T 24179; ASTM E837 | | Regulation (derived from) | Announcement of Newly Approved National Standards 2011 No. (No. 166 overall) 1 | | 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 processing method using the principle of explosion welding residual stress elimination to determine the explosion processing parameters to evaluate the treatment effect of the explosion, and safety issues related to the construction work. After welding This Standard is applicable to a thickness greater than 5 mm, the yield strength of not more than 900 MPa, welding quality standards, good ductility (A> 10%) of the metal material welded components to eliminate residual stress treatment. | GB/T 26078-2010: Metallic materials -- Welding residual stresses -- Method with explosion treatment
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Metallic materials. Welding residual stresses. Method with explosion treatment
ICS 77.040.10
H22
National Standards of People's Republic of China
Metallic materials welding residual stress
Explosive approach
Issued on. 2011-01-10
2011-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
Appendix A of this standard is a normative appendix.
The standard proposed by China Iron and Steel Association.
This standard is under the jurisdiction of the National Steel Standardization Technical Committee.
This standard was drafted. Wuhan Iron and Steel (Group) Corporation, Institute of Metal Research, Shenyang Consumers should Blasting Engineering Co., Ltd.
The main drafters of this standard. IRON Chen Huaining, Tan Shengyu, Zhuying Ping, Zhu Hongchuan, Qiubao Wen coated should macros.
Introduction
Welding residual stress in a wide variety of welding structure, high tensile welding residual stress on long-term safety of welded structures service
Performance is often adversely affected.
The root causes of welding residual stress of welded joints between metal region (including weld and heat affected zone) and the base metal due to the temperature
Nonconforming strain degree difference generated, so any process to eliminate welding residual stress of welded joints are to make this region a non-coordinated deformation
To change the direction of coordination, such as welded joints region plastically elongate or shorten the matrix plastically. Explosive treatment method is a typical
By mechanical deformation method to eliminate welding residual stress type of technology.
Not only could well eliminate welding residual stress by members of the explosion shock wave energy generated in the process, usually also
In order to improve various mechanical properties of the material being processed. Explosive treatment method is suitable for a variety of engineering components to eliminate the stress of demand, especially suitable for large
Medium-sized steel structure, as well as structural components made of dissimilar welded joints or stainless steel material. By staging the weld, multiple batches explosion treatment,
To facilitate the solution to long and medium-sized structure of a total or partial weld stress relief treatment.
Metallic materials welding residual stress
Explosive approach
Important Note. This standard does not point out all possible security issues. The user's responsibility to take appropriate safety and health practices and security
Certified to comply with the conditions relevant state regulations.
1 Scope
This standard specifies the use of explosive welding residual stress treatment method to eliminate the principle of assessment to determine the processing parameters of the explosion, the explosion of the treatment effect
Price, construction work and related security matters.
This standard applies to a thickness greater than 5mm, the yield strength of not more than 900MPa, welding quality standards, good ductility (A > 10%)
After welding of metallic materials welded components to eliminate residual stress treatment.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 6722 Blasting Safety Regulations
GB 8031 \u200b\u200bindustrial electric detonator
GB 9786 general detonating cord
GB 19417 Detonator
GB/T 24179 metallic materials - Determination of indentation residual stress-strain method
ASTME837 Standard Test Method for Determination of Residual Stress drilling strain gage method
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Residual elastic strain residualelasticstrain
εer
The residue produced by the welding in welded joints of elastic strain.
3.2
The total plastic strain totalplasticstrain
εp
After the explosion process eventually produce plastic strain in metal.
3.3
Shock-induced plastic strain plasticstraininducedbyshockwaves
In shock induced plastic strain of metal production.
3.4
Residual stress remainedstress
Metal stress remaining after the explosion process.
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