NB/T 20009.6-2012 in English

1 Scope

This part specifies the models, technical requirements, test methods, inspection rules, etc. of carbon steel welding wire for argon tungsten-arc welding of Class 1, 2, 3 components of pressurized water reactor nuclear power plant.
This part is applicable to carbon steel welding wire for argon tungsten-arc welding of Class 1, 2, 3 components of pressurized water reactor nuclear power plant.

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy - The Diantipyryl Methane Phosphomolybdate Gravimetric Method for the Determination of Phosphorus Content
GB/T 223.5 Steel and Iron - Determination of Acid-soluble Silicon and Total Silicon Content - Reduced Molybdosilicate Spectrophotometric Method (GB/T 223.5-2008, ISO 4829-1:1986, ISO 4829-2:1988, MOD)
GB/T 223.11 Iron, Steel and Alloy - Determination of Chromium Content - Visual Titration or Potentiometric Titration Method (GB/T 223.11-2008, ISO 4937:1986, MOD)
GB/T 223.12 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium Carbonate Separation-diphenyl Carbazide Photometric Method for the Determination of Chromium Content
GB/T 223.14 Methods for Chemical Analysis of Iron, Steel and Alloy - The N-benzoy-N-phenylhydroxylamine Extraction Photometric Method for the Determination of Vanadium Content
GB/T 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium Thiosulfate Separation Iodimetric Method for the Determination of Copper Content
GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy - The Neocuproine-chloroform Extraction Photometric Method for the Determination of Copper Content
GB/T 223.23 Iron, Steel and Alloy - Determination of Nickel Content - The Dimethylglyoxime Spectrophotometric Method
GB/T 223.26 Iron, Steel and Alloy - Determination of Molybdenum Content - The Thiocyanate Spectrophotometric Method
GB/T 223.53 Methods for Chemical Analysis of Iron, Steel and Alloy - The Flame Atomic Absorption Spectrophotometric Method for the Determination of Copper Content (GB/T 223.53-1987, eqv ISO/DIS 4943:1986)
GB/T 223.54 Methods for Chemical Analysis of Iron, Steel and Alloy - The Flame Atomic Absorption Spectrophotometric Method for the Determination of Nickel Content (GB/T 223.54-1987, eqv ISO/DIS 4940:1986)
GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy - The Extraction-absorption Catalytic Polarographic Method for the Determination of Manganese Content
GB/T 223.59 Iron, Steel and Alloy - Determination of Phosphorus Content - Bismuth Phosphomolybdate Blue Spectrophotometric Method and Antimony Phosphomolybdate Blue Spectrophotometric Method
GB/T 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy - The Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon Content
GB/T 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy - The Ammonium Phosphomolybdate Volumetric Method for the Determination of Phosphorus Content
GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy - The Butyl Acetate Extraction Photometric Method for the Determination of Phosphorus Content
GB/T 223.63 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium (Potassium) Periodate Photometric Method for the Determination of Manganese Content
GB/T 223.64 Iron, Steel and Alloyed - Determination of Manganese Content - Flame Atomic Absorption Spectrometric Method (GB/T 223.64-2008, ISO 10700:1994, IDT)
GB/T 223.67 Iron, Steel and Alloy - Determination of Sulfur Content -Methylene Blue Spectrophotometric Method (GB/T 223.67-2008, ISO 10701:1994, IDT)
GB/T 223.68 Methods for Chemical Analysis of Iron, Steel and Alloy - The Potassium Iodate Titration Method after Combustion in the Pipe Furnace for the Determination of Sulfur Content
GB/T 223.69 Iron, Steel and Alloy - Determination of Carbon Contents - Gas-volumetric Method after Combustion in the Pipe Furnace
GB/T 223.71 Methods for Chemical Analysis of Iron, Steel and Alloy - The Gravimetric Method after Combustion in the Pipe Furnace for the Determination of Carbon Content
GB/T 223.72 Iron, Steel and Alloy - Determination of Sulfur Content - Gravimetric Method
GB/T 223.76 Methods for Chemical Analysis of Iron, Steel and Alloy - The Flame Atomic Absorption Spectrometric Method for the Determination of Vanadium Content
GB/T 223.79 Iron and Steel - Determination of Multi - Element Contents - X-ray Fluorescence Spectrometry (Routine Method)
GB/T 223.85 Steel and Iron - Determination of Sulfur Content - Infrared Absorption Method after Combustion in an Induction Furnace (GB/T 223.85-2009, ISO4935:1989, IDT)
GB/T 223.86 Steel and Iron - Determination of Total Carbon Content - Infrared Absorption Method after Combustion in an Induction Furnace (GB/T 223.86-2009, ISO9556:1989, IDT)
GB/T 2650 Impact Test Methods on Welded Joints (GB/T 2660-2008, ISO 9016:2001, IDT)
GB/T 2652 Tensile Test Methods on Weld and Deposited Metal (GB/T 2652-2008, ISO 5178:2001, IDT)
GB/T 3965 Determination of Diffusible Hydrogen in Deposited Metal
GB/T 4338 Metallic Materials - Tensile Testing at Elevated Temperature (GB/T 4338-2006, ISO 783:1999, MOD)
GB/T 8110 Welding Electrodes and Rods for Gas Shielding Arc Welding of Carbon and Low Alloy Steel
GB/T 25774.1-2010 Test Methods for Welding Consumables - Part 1: Preparation and Testing of Deposited Metal Specimens for Mechanical Properties in Steel, Nickel and Nickel Alloys (ISO 15792-1:2000, MOD)
GB/T 25775 Technical Delivery Conditions for Welding Consumables - Type of Product, Dimensions, Tolerances and Markings (GB/T 25775-2010, ISO 544:2003, MOD)
GB/T 25778 Procurement Guidelines for Welding Consumables (GB/T 25778-2010, ISO 14344:2010, MOD)
NB/T 20003.3 Non-destructive Testing for Mechanical Components in Nuclear Island of Nuclear Power Plants - Part 3: Radiographic Testing

3 Models

Models of welding wires in this part include ER50-3 and ER50-6. The designation of welding wire model is in accordance with those specified in GB/T 8110.

4 Technical Requirements

Foreword I
1 Scope
2 Normative References
3 Models
4 Technical Requirements
4.1 Chemical Composition
4.2 Dimension
4.3 Surface Quality
4.4 Winding Requirements
4.5 Mechanical Performance of Deposited Metal (As-welded or/and Simulated Stress-relief Heat Treatment State)
4.6 Radiographic Testing for Weld
4.7 Diffusible Hydrogen Content in Deposited Metal
5 Test Methods
5.1 Chemical Composition Analysis
5.2 Dimension and Surface Quality
5.3 Relaxation Diameter and Tilting Distance
5.4 Preparation of Deposited Metal Test Piece
5.5 Mechanical Performance Test of Deposited Metal
5.6 Radiographic Testing for Weld
5.7 Determination of Diffusible Hydrogen Content in Deposited Metal
6 Inspection Rules
6.1 Batch Division
6.2 Sampling Methods
6.3 Acceptance
6.4 Re-inspection
7 Packaging, Marking and Quality Certificate
7.1 Packaging
7.2 Marking
7.3 Quality Certificate