Some standard content:
ICS25.160.10
Industry standard of the People's Republic of China
NB/T47014-2011 (JB/T4708)
Replaces JB4708—2000
Welding procedure qualification for pressure equipment
equipment2011-07-01Released
National Energy AdministrationReleased
2011-10-01Implementation
Foreword
Scope
Normative references
Terms and definitions
General
Factors and classification of welding procedure assessment
6 Welding procedure assessment for butt welds and fillet welds: Corrosion resistant cladding procedure assessment
Appendix A (Informative Appendix)
Appendix B (Normative Appendix)
Appendix C (Normative Appendix)
Appendix D (Normative Appendix)
Appendix E (Normative Appendix)
Appendix F (Informative Appendix)
Appendix G (Informative Appendix)
Preparation instructions
Welding Process specification flow chart….
Supplementary provisions for parent metal, filler metal and welding method Welding procedure qualification for composite metal materials
NB/T47014—2011 (JB/T4708)
·62
Welding procedure qualification for heat exchange tube and tube sheet and additional qualification for welding procedure Stud arc welding procedure qualification
Recommended format for welding procedure qualification form:
Common English abbreviations and codes for welding procedure qualification64
NB/T47014—2011 (JB/T4708)
Foreword
Compared with JB4708--2000 "Welding procedure qualification for steel pressure vessels", the main changes of this standard are as follows: the scope of application is expanded from pressure vessels to boilers, pressure vessels and pressure piping; the addition of "welding procedure specification flow chart" JB47082000 has added six appendices, including welding procedure drawings, supplementary provisions for parent metals, filler metals and welding methods, welding procedure qualification for composite metal materials, welding procedure qualification for heat exchange tubes and tube sheets and additional qualification for welding procedures, stud arc welding procedure qualification and common English abbreviations and codes for welding procedure qualification: adding welding procedure qualification for welding methods such as plasma arc welding, gas-electric vertical welding, stud arc welding and friction welding; adding welding procedure qualification for titanium, aluminum, copper and nickel materials; adding the classification of filler metals (electrodes, welding wires, fluxes) and welding procedure qualification rules: adding the term "welding procedure qualification" and changing "welding procedure instruction" to "pre-welding procedure specification"; adding the terms "additional qualification for welding procedure", "welding operation instruction", "stud arc welding" and "deficiency"; canceling Appendix A "stainless steel welding procedure qualification" in JB47082000; "Welding Procedure Qualification of Steel Composite Steel"; Change the writing structure of JB4708-2000 standard, and concentrate the welding procedure qualification factors and classification into chapters; All kinds of welding procedure qualification are written according to the qualification rules, qualification methods, inspection requirements and result evaluation procedures; Chapter 4
Cancel the welding procedure qualification of type test pieces: Chapter 5
1) Add metal materials for boilers and pressure pipes, and divide them into categories and groups; 2) According to the changes in GB150-1998, cancel and add some pressure vessel steels and re-divide them into categories and groups; 3) Cancel the qualification rules for the grades and steel grades of welding rods, fluxes and welding wires in the filler metal category in Table 1 of JB4708-2000, and cancel the welding procedure qualification factors related to electroslag welding in the "Welding Procedure Qualification of Butt Welds and Fillet Welds" in JB4708-2000. Several clauses were added, and Table 6 was revised; Chapter 6
1) Added the parent material assessment rules for plasma arc welding and friction welding. Added parent material assessment rules for other welding methods; 2) Revised the two provisions on specimen thickness and weldment thickness coverage; 3) Revised the basis for tensile test judgment and qualified indicators; 4) Changed the bending test width of tubular specimens with an outer diameter of @≤100mm; 5) Added the bending test provisions for titanium, aluminum, copper and nickel materials; 6) Revised the provisions for the location of impact specimens in the thickness direction; Chapter 7
1) Revised the cladding process factors for re-evaluation of cladding metal; 2) Added the cladding process factors for re-evaluation of plasma arc welding cladding; 3) Added tubular cladding specimens and specified the sampling location; Appendix
NB/T47014-2011 (JB/T4708) In the recommended format of welding process assessment forms, Table F.3 "Heat exchange tube and tube sheet welding process card" and Table F.4 "Additional Assessment Report on Welding Process of Heat Exchange Tubes and Tube Sheets". Appendix B, Appendix C, Appendix D and Appendix E of this standard are normative appendices. Appendix A, Appendix F and Appendix G of this standard are informative appendices. This standard is proposed and coordinated by the National Boiler and Pressure Vessel Standardization Technical Committee (SAC/TC262). The unit and drafter responsible for drafting this standard: Hefei General Machinery Research Institute
China Special Equipment Testing Institute
Special Equipment Safety Supervision Bureau of the General Administration of Quality Supervision, Inspection and Quarantine The units and drafters participating in the drafting of this standard: Shanghai Boiler Factory Co., Ltd.
Harbin Boiler Factory Co., Ltd.
Lanzhou Lanshi Machinery Equipment Co., Ltd. Fushun Machinery Equipment Manufacturing Co., Ltd.
AVIC Liming Jinxi Chemical Machinery (Group) Co., Ltd. Responsible company Dalian Bingshan Group Jinzhou Heavy Machinery Co., Ltd. China Petroleum and Natural Gas Pipeline Research Institute China Chemical Engineering Third Construction Company
Jindun Pressure Vessel Co., Ltd.
Oil and Natural Gas Lanzhou Engineering Quality Supervision Station Ge Zhaowen , Dou Wanbo, Fang Wunong
Shou Binan, Xie Tiejun, Yang Guoyi
Zhang Jianrong, Wang Xiaolei
Yang Peiliang
Yang Song
Lei Wanqing||tt ||Hu Xihai
Wang Yuwei
Zhan Qi
Sui Yongli
Xia Jiewen
Ma Xiakang
Zhang Jianjun
This standard is produced by The National Boiler and Pressure Vessel Standardization Technical Committee (SAC/TC262) is responsible for the interpretation. The previous versions released by this standard are: JB4708-1992;
JB4708-2000.
1 Scope
NB/T47014-2011 (JB/T4708)
Welding process qualification of pressure-bearing equipment
This standard specifies the pressure-bearing equipment (boilers, pressure vessels, Pressure pipeline) butt weld and fillet welding process qualification, corrosion-resistant surfacing welding process qualification, composite metal material welding process qualification, heat exchange tube and tube plate welding process qualification and additional welding process qualification, and stud arc welding process qualification rules, test methods and qualification indicators. This standard applies to welding methods such as gas welding, electrode arc welding, submerged arc welding, gas tungsten arc welding, gas metal arc welding, electroslag welding, plasma arc welding, friction welding, gas-electric vertical welding and stud arc welding. This standard does not apply to gas cylinders.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this document. For undated referenced documents, the latest version (including all amendments) applies to this document. GB150 (all parts)
GB151
GB/T228
GB/T229
GB/T699
GB/T700
GB/ T710
GB/T711
GB713
GB912
GB/T1176
GB/T1527
GB/T1528
GB/T1591
GB/T2040
GB/T2054
GB/T2653
GB/T2882
GB/T3077
GB3087| |tt||GB/T3091
GB/T3274
GB/T3280
Pressure vessel
Shell and tube heat exchanger
Metal material stretching Test
Charpy Pendulum Impact Test Method for Metal Materials High-Quality Carbon Structural Steel
Carbon Structural Steel
High-Quality Carbon Structural Steel Hot-rolled Thin Steel Plate and Steel Strip High-Quality Carbon Structure Steel Hot-rolled thick steel plates and steel strips Steel plates for boilers and pressure vessels
Carbon structural steel and low-alloy structural steel Hot-rolled thin steel plates and steel strips Casting copper alloy technical conditions
Copper and copper alloy drawing Pipemaking
Copper and copper alloy extruded pipes
Low alloy high-strength structural steel
Copper and copper alloy plates
Nickel and nickel alloy plates
Welded joint bending test method
Nickel and nickel alloy pipes
Alloy structural steel
Seamless steel pipes for low and medium pressure boilers
Welded steel pipes for low-pressure fluid transportation||tt ||Carbon structural steel and low alloy structural steel hot-rolled thick steel plates and strips stainless steel cold-rolled steel plates and strips
NB/T47014—2011 (JB/T4708)
GB/T3375|| tt||GB3531
GB/T3621
GB/T3624
GB/T3625
GB/T3670
GB/T3880 (all parts)|| tt||GB/T4237
GB/T4423
GB/T4435
GB/T4437.1
GB/T5293
GB5310||tt| |GB6479
GB/T6614
GB6653
GB/T6893
GB/T8163
GB/T8890
GB/T9460|| tt||GB/T9711.1
GB/T9711.2
GB9948
GB/T11352
GB/T12229
GB/T12230
GB/T12459
GB/T12470||tt ||GB/T12771
GB/T13237
GB13296
GB/T13401
GB/T13814
GB/T14845
GB/ T14976
GB/T15008
GB/T15620
Welding terminology
Low alloy steel plates for cryogenic pressure vessels
Titanium and titanium alloy plates||tt ||Titanium and titanium alloy seamless tubes
Titanium and titanium alloy tubes copper and copper alloy welding rods for heat exchangers and condensers
Aluminum and aluminum alloy plates and strips for general industrial use stainless steel hot-rolled steel plates and steel strips
Copper and copper alloy drawn rods
Nickel and nickel alloy rods
Aluminum and aluminum alloy hot extruded tubes Part 1: Seamless circular tubes for submerged arc welding Carbon steel welding wire and flux
Seamless steel pipes for high-pressure boilers
Seamless steel pipes for high-pressure fertilizer equipment
Titanium and titanium alloy castings
Steel plates and steel for welding gas cylinders Belt
Aluminum and aluminum alloy drawn (rolled) seamless pipes
Seamless steel pipes for conveying fluids
Copper alloy seamless pipes for heat exchangers
Copper and copper Alloy welding wire
Oil and natural gas industry
, technical delivery conditions for steel pipes
Part 1: Grade A steel pipe
Technical delivery conditions for steel pipes for oil and gas industry Part 2 Part: Grade B steel pipe
Seamless steel pipe for petroleum cracking
Casted carbon steel parts for general engineering
Technical conditions of carbon steel castings for general valves
Stainless steel castings for general valves Technical conditions
Steel butt welded seamless pipe fittings
Low alloy steel wire and flux for submerged arc welding
Stainless steel welded steel pipes for fluid transportation
High quality carbon structural steel Cold-rolled steel plates and steel strips Stainless steel seamless steel pipes and steel plate butt-welded pipe fittings for boilers and heat exchangers
Nickel and nickel alloy welding rods
Titanium plates for plate heat exchangers
For fluid transportation Stainless steel seamless steel pipe
Corrosion-resistant alloy rod
Nickel and nickel alloy welding wire
GB/T16253
GB/T16598
GB/T17791||tt ||GB/T17854
GB/T18984
GB19189—2011
GB/T20878
GB/T21832
GB/T21833
GB24511—2009
GB/T24593
NB/T47008
NB/T47009
NB/T47010
NB/T47018 (all parts)||tt ||JB/T4730 (all parts)
JB/T4734
JB4741
JB4742
JB4743
JB/T9625
JB/ T9626
JB/T10087
YB/T5264
YB/T5353
YB/T5354
3 Terms and Definitions
Pressure Steel Castings
Titanium and titanium alloy cakes and rings
NB/T47014—2011 (JB/T4708)
Seamless copper tubes for air conditioning and refrigeration equipment
Submerged arc welding Use stainless steel welding wire and flux
Seamless steel pipes for low-temperature pipelines
Quenched and tempered high-strength steel plates for pressure vessels
Stainless steel and heat-resistant steel grades and chemical compositions austenitic ferritic type dual Phase stainless steel welded steel pipes Austenitic ferritic duplex stainless steel seamless steel pipes Stainless steel plates and strips for pressure-bearing equipment
Austenitic stainless steel welded steel pipes for boilers and heat exchangers Carbon steel and alloys for pressure-bearing equipment Steel forgings Low alloy steel forgings for low temperature pressure equipment
Stainless steel and heat-resistant steel forgings for pressure equipment Welding materials for pressure equipment Ordering technical conditions Non-destructive testing of pressure equipment
Aluminum welded vessels| |tt||Nickel-copper alloy hot-rolled plates for pressure vessels
Nickel-copper alloy seamless pipes for pressure vessels
Nickel-copper alloy forgings for pressure vessels
Boiler pipe accessories pressure casting Technical conditions for steel parts Technical conditions for boiler forgings
Technical conditions for steam turbine pressure-bearing steel castings
Corrosion-resistant alloy forgings
Corrosion-resistant alloy hot-rolled plates
Corrosion-resistant alloy cold Thin rolled plate
The terms and definitions defined in GB/T3375 and the following are applicable to this document. 3.1
Welding procedure qualification welding procedure qualification is the test process and result evaluation carried out to verify the correctness of the proposed welding procedure. In this standard, welding procedure qualification refers to the process of conducting verification tests and result evaluation of pre-welding procedure specifications in order to ensure that the mechanical properties, bending properties or chemical composition of the cladding layer of the welded joint meet the requirements. 3.2
Preliminary welding procedure specification (pWPS)
preliminary welding procedure specification is a welding procedure document developed for welding procedure qualification. NB/T47014-2011 (JB/T4708)
Welding procedure qualification report (PQR) procedurequalificationrecord records the verification test and its inspection results, and is a report that evaluates the proposed pre-welding procedure specification. 3.4
Welding procedure specification (WPS)
welding procedure specification is a welding procedure document prepared based on a qualified welding procedure qualification report and used for product welding. 3.5
Welding Working Instruction (WWI)
weldingworkinginstruction
Detailed processing and operation documents related to the manufacture of weldments. The work instructions used by welders during welding can ensure the reproducibility of quality during construction. wwW.bzxz.Net
Supplementary welding procedure qualification In order to ensure that the additional characteristics of the welded joint (such as the fillet weld thickness of the heat exchange tube and tube sheet) comply with the regulations, the proposed welding procedure specification is subject to verification testing and result evaluation.
Weldment
Pressure-bearing equipment or its parts connected by welding or with a surfacing layer. The weldment consists of two parts: the base metal and the welding joint (or surfacing layer).
Test piece testcoupon
A weldment made for testing according to a predetermined welding process. The test piece consists of two parts: the base metal and the welded joint (or surfacing layer). 3.9
Post weld heat treatment (PWHT)
post weld heattreatment
Thermal process that can change the structure and properties of the welded joint or the welding residual stress. 3.10
lowertransformationtemperature
The phase transformation temperature at which austenite begins to form during heating. 3.11
Upper transformation temperature
uppertransformationtemperature The phase transformation temperature at which austenite transformation is completed during heating. 3.12
facebend
The tensile surface of the bending specimen is the bending of the front side of the weld. The side with the larger weld width is the front side. When the weld widths on both sides are equal, the side with the cover welding layer completed first is the front side.
3.13
Back bend rootbend
The tensile surface of the bending specimen is the bending on the back side of the weld. 3.14
sidebend
The tensile surface of the bending specimen is the bending of the weld cross section. 10 | | tt | | 3.15 | Welding method in which two molten parts fuse with each other under the action of external pressure. No filler metal is used during welding, and shielding gas and flux can be used or not. 3.16
Imperfection
In the welded joint and base metal, non-destructive testing standards allow the existence of discontinuous parts. 4 General principles
4.1 In addition to complying with the provisions of this standard, the welding process assessment of pressure-bearing equipment should also comply with the requirements of relevant standards and technical documents for boilers, pressure vessels and pressure pipeline products.
4.2 The general process of welding process qualification is: based on the welding performance of metal materials, formulating pre-welding process regulations in accordance with design document regulations and manufacturing processes, welding test pieces and preparing samples, and testing whether the welded joints comply with the regulations. requirements, and form a welding procedure qualification report to evaluate the pre-welding procedure specifications. 4.3 Welding procedure evaluation should be carried out in the unit. The equipment and instruments used for welding process qualification should be in normal working condition, the metal materials and welding materials should meet the corresponding standards, and the unit's skilled welding personnel should use the unit's equipment to weld the test pieces. 4.4 The qualified welding process refers to the important factors and additional factors among the general welding process assessment factors and special welding process assessment factors listed in the qualified welding process assessment report. 4.5 See Appendix A for the welding procedure procedures. 5 Welding process evaluation factors and classification
5.1 General welding process evaluation factors and classification of various welding methods 5.1.1 Welding methods and classification
The categories of welding methods are: gas welding, electrode arc welding, Submerged arc welding, gas tungsten arc welding, gas metal arc welding (including flux-cored wire arc welding), electroslag welding, plasma arc welding, friction welding, gas-electric vertical welding and stud arc welding. 5.1.2 Metal materials and classification
According to the chemical composition, mechanical properties and welding performance of metal materials, the base materials for welded pressure equipment are classified and grouped as shown in Table 1. Table 1 Classification and grouping of base metals for welded pressure equipment Brand, grade, model
Q195
Q215A
Standard
GB/T699, GB/T711, GB3087, GB6479, GB/T8163, GB9948, GB/T12459| | tt | T47008GB5310, GB/T12459
GB/T700
GB/T700, GB/T3091
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