This standard specifies the requirements for welding heat treatment of steel weldment in the course of installation, overhauling and factory configuration of thermal power generating equipment.
This standard is applicable to preheat, postheat and postweld heat treatment of weldment.
Foreword II 1 Scope 2 Normative References 3 Terminologies and Definitions 4 General Requirements 5 Heating Method and Application Scope of Welding Heat Treatment 6 Welding Heat Treatment Technology 7 Temperature Measurement 8 Postweld Heat Treatment Technological Measures 9 Quality Inspection 10 Technical Documents Appendix A (Normative) Technical Conditions of Flexible Ceramic Resistance Heater Appendix B (Informative) Technology Card, Operation Record and Work Statistical Table of Welding Heat Treatment Appendix C (Informative) Preheat Temperature of Commonly Used Steels Appendix D (Informative) Temperature and Time of Postweld Heat Treatment for Commonly Used Steels Appendix E (Normative) Postweld Heat Treatment Quality Evaluation Table