To explore the experimental methods for the evaluation of thermal correction processes in steel structures
in order to meet the requirements of the European steel structure specification EN1090-2 for the assessment of flame correction processes
and to fill the gap in the specific requirements for the evaluation of thermal correction processes in the current specifications. The factors affecting the performance of steel during thermal correction were analyzed
including the properties of the base metal
the heat source
the heating control
and the cooling control. Based on these influencing factors
an experimental method for the evaluation of thermal correction processes was proposed
including the heating method for the evaluation test plates
the recording of the test process
and the content of the inspection. Through the process evaluation experiments
key evaluation variables for thermal correction processes were identified
and these variables were divided into important factors and secondary factors. Tensile
impact
hardness tests
and micrographic metallographic tests were used as the content for evaluating the effects of thermal correction. The study concluded that it is recommended to formulate a thermal correction process evaluation plan according to the material
thickness
and specific conditions of the factory for steel structures
organize thermal correction process experiments and physical and chemical tests for the test plates
and compile a thermal correction process guide. In addition
train thermal correction operators with the corresponding skill level to ensure the effective implementation of thermal correction work requirements.
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CEN/TR 10347—2006, Guidance for forming of structural steels in processing [S]. European committee for standardization, 2006.
EN 1090—2018, Execution of steel structures and aluminium structures Part 2: Technical requirements for steel structures [S]. European committee for standardization, 2018.