This part of JB/T 5000 specifies the ultrasonic inspection, radiographic inspection, magnetic particle inspection and penetrant inspection of cast steel as well as the corresponding quality grade of cast steel.
This part applies to the cast steel for heavy machinery. Thereinto, the ultrasonic inspection applies to the cast carbon steel and low alloy steel with thickness no less than 30mm but does not applies to the Austenite cast steel. Radiographic inspection applies to the cast steel with thickness of 5mm~300mm. Magnetic particle inspection applies to the surface and near surface defect inspection of Ferritic cast steel. Penetrant inspection applies to the surface-breaking defect inspection of cast steel.
For all the products adopted with the non-destructive inspection methods specified in this part, the information, such as inspection method, position, depth range and quality grade shall be indicated in the pattern, technical document and technical conditions for order of products.
Foreword III
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
4.1 Principles of Application
4.2 Inspection Files
4.3 Inspection Personnel
5 Quality Grade
5.1 Grade Classification
5.2 Selection of Quality Grade
6 Inspection Method
6.1 Magnetic Particle Inspection or Penetrant Inspection
6.2 Ultrasonic Wave Inspection or Radiographic Inspection
Appendix A (Normative) Magnetic Particle Inspection of Cast Steel Surface
A.1 Method and Principle
A.2 Arrangement before Inspection
A.3 Magnetizer
A.4 Magnetization Method
A.5 Types of Magnetizing Currents
A.6 Magnetization Verification
A.7 Display the Inspection Media of Stray Field
A.8 Preparation of Inspected Surface
A.9 Inspection Operation
A.10 Evaluation of Defect Indication
A.11 Demagnetization
A.12 Inspection Report
Appendix B (Normative) Penetrant Inspection of Cast Steel
B.1 Mode and Purpose of Inspection
B.2 Arrangement before Inspection
B.3 Permeation Defect Detection Agent and Examination
B.4 Preparation of Inspected Surface
B.5 Inspection Method and Operation
B.6 Evaluation of Defect Indication
B.7 Inspection Report
Appendix C (Normative) Ultrasonic Inspection of Cast Steel
C.1 Inspection Principle and Purpose
C.2 Application Scope
C.3 Negotiation before Inspection
C.4 Preparation of Inspected Casting
C.5 Inspection System
C.6 Adjustment of Defectoscope
C.7 Confirmation of Ultrasonic Detectability
C.8 Implementation of Inspection
C.9 Inspection of Defect
C.10 Measuring Defect Size
C.11 Evaluation of Echo
C.12 Inspection Report
Appendix D (Normative) Radiography Inspection of Cast Steel and Its Quality Grade
D.1 Image Quality Level
D.2 Mutual Agreement of Contract
D.3 Equipment and Apparatus
D.4 Transillumination Method
D.5 Quality Requirement of the Negative Film
D.6 Negative Film Observation
D.7 Scattered Rays Shielding
D.8 Ranking Method of the Defect Image Quality
D.9 Records
