Technical requirements for metrology of the T/CMA YJ069-0201 rebar bending testing machine

Scope

Scope: This standard applies to industries such as metallurgy, machinery manufacturing, and construction, and is used for the metrology of steel bar bending and reverse bending testing machines. Steel bar bending machines can be divided into horizontal bending machines and vertical bending machines according to the direction of bending. Main technical content: Steel bar bending testing machines are specialized equipment used for cold bending and plane reverse bending tests on steel bars. At present, there are no national metrology verification procedures/calibration standards. The technical parameters and indicators of this equipment comply with YB/T 5126-2003 "Method for Bending and Reverse Bending Test of Steel Bars for Reinforced Concrete", and GB1499.2-2007 "Steel Tubes for Reinforced Concrete Part 2: Hot-rolled Ribbed Steel Bars". This product is widely used in metallurgy, machinery manufacturing, construction, engineering supervision, technical quality supervision, and other units to test the mechanical properties of various steel bars in forward and reverse bending. Due to the lack of corresponding calibration basis, it is impossible to reasonably judge whether the metrological performance of the equipment and the bending results meet the requirements. Therefore, the formulation of this standard can effectively determine whether the working performance of the in-use steel bar bending testing machines meets the working requirements. The standard content includes: measurement principles and general requirements, implementation of metrological characteristics, expression of metrological results, metrological time intervals, reference format for metrological records of steel bar bending testing machines (Appendix A), and evaluation of uncertainty in bending angle measurement of steel bar bending testing machines (Appendix B).

Development Information

Related Standards