3 Basic Requirements
3.0.1 The quality acceptance of reheating furnace should be divided into 5 separate items,namely,furnace non-standard equipment,steel structure,refractory construction,piping system and electric automation system,and should be conducted respectively.
3.0.2 The construction drawings of reheating furnace and relevant design documents are important basis of the quality acceptance.The construction material,equipment model,dimension,dimensional tolerance,geometrical tolerance,machining and welding requirements shall meet the requirements in the construction drawings.
3.0.3 The mechanical equipment,pipe accessories and materials of furnace shall,before delivery,have certification and meet the design requirements.The factory inspection shall be conducted for crucial mechanical equipment,pipe accessories and materials of furnace.
3.0.4 The painting and packaging of the mechanical equipment and materials of furnace shall comply with the requirements in current professional standards YB/T 036.19 General Specifications for Manufacture of Metallurgical Equipment-Painting and YB/T 036.21 General Specifications for Manufacture of Metallurgical Equipment-Packaging.
3.0.5 Composition and performance report shall be provided for the heat resistant steel,which is used for heat resistant casting.Acceptance of heat resistant casting shall comply with the requirements in current professional standards YB/T 036.2 General Specifications for Manufacture of Metallurgical Equipment-Iron Castings and YB/T 036.3 General Specifications for Manufacture of Metallurgical Equipment-Steel Castings.The appearance of the heat resistant casting shall be even,flat and free of obvious casting defects.
3.0.6 Acceptance of steel forging shall meet the requirements in current professional standard YB/T 036.7 General Specifications for Manufacture of Metallurgical Equipment-Steel Forgings.
3.0.7 The steel plate,steel pipe,round steel and section steel of reheating furnace shall be provided with material quality certificate,and the surface rust grade shall not be lower than Grade B as stipulated in current national standard GB/T 8923.1-2011 Preparation of Steel Substrates before Application of Paints and Related Products-Visual Assessment of Surface Cleanliness-Part 1:Rust Grades and Preparation Grades of Uncoated Steel Substrates and of Steel Substrates after Overall Removal of Previous Coatings.
3.0.8 Acceptance shall be conducted of the foundation of reheating furnace before installation of the mechanical equipment and steel structures of furnace;external dimensions and tolerance of the foundation shall comply with the requirements in civil construction drawings and current national standard GB 50204 Code for Acceptance of Constructional Quality of Concrete Structures.The foundation,anchor bolts and backing plates of reheating furnace shall comply with the requirements in current national standard GB 50386 Code for Acceptance of Engineering Installation for Mechanical Equipment of Rolling Mill.
3.0.9 Permanent marking shall be left on the foundation for reference line,reference point and reference elevation of reheating furnace.
3.0.10 Construction and acceptance of stack shall meet the requirements in current national standard GB 50078 Code for Construction and Acceptance of Chimney Works.
3.0.11 Anyone who performs welding operation shall be trained or pass the examination and get the qualification,and shall conduct welding on the qualified items and within the approved professional scope.