1 Scope
This Part of JB/T 5000 specifies the ultrasonic, magnetic particle and penetrant inspection methods for forged steel and their quality grades.
This Part is applicable to the non-destructive inspection of forged steel for heavy machinery use.
Adoption of the non-destructive inspection method specified in this Part may involve dangerous materials, operation and equipments, so that personnel participating in the non-destructive inspection shall comply with the relevant specifications for safety and health protection.
The non-destructive inspection method, position and quality grade of forgings shall be indicated in the forging drawing, technical documents and technical specifications for procurement.
2 Normative References
The following normative documents contain provisions which, through reference in this Part of JB/T 5000, constitute provisions of this Part. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these labels are applied or not. For undated references, the latest edition of the normative document is applicable to this Part.
Contents
Foreword III
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
4.1 Selection Principle
4.2 Inspection Files
4.3 Inspection Personnel
5 Ultrasonic Inspection and Its Quality Grade
5.1 Inspection Basis
5.2 Instruments and Equipments
5.3 Probe
5.4 Couplant
5.5 Test Block
5.6 Test of the Combined Performance of System
5.7 Preparation of Forgings Prior to Inspection
5.8 Inspection Specification
5.9 Recording of Defect
5.10 Quality Grade
5.11 Ultrasonic Inspection Report
6 Magnetic Particle Inspection and Its Quality Grade
6.1 Inspection Basis
6.2 Inspection Surface Requirements
6.3 Inspection Period
6.4 Equipments and Magnetic Particle
6.5 Magnetization Method
6.6 Sensitivity Test Piece
6.7 Magnetic Field Intensity
6.8 Application of Magnetic Particles and Magnetic Suspension
6.9 Demagnetization
6.10 Reinspection
6.11 Classification of Magnetic Particle Indication
6.12 Record Limit and Acceptance Criteria
6.13 Magnetic Particle Inspection Report
7 Penetrant Inspection and Its Quality Grade
7.1 Inspection Basis
7.2 Inspection Surface Requirements
7.3 Inspection Materials
7.4 Reference Block
7.5 Classification and Selection of Penetrant Inspection Method
7.6 Operation Specifications
7.7 Classification of Suspension Indication
7.8 Record Limit and Acceptance Criteria
7.9 Penetrant Inspection Report
Appendix A (Normative) Transverse Wave Inspection Method for Steel Forgings and Quality Acceptance Requirements
A.1 Application Scope
A.2 Probe
A.3 Verification Test Block
A.4 Inspection Sensitivity Adjustment
A.5 Inspection Operation
A.6 Record and Assessment
