Optimization of corner cooling structure of narrow copper plate in small chamfered mold
In order to solve the problem of increasing the proportion of longitudinal cracks in the corner of the slab during the high-speed production of small chamfered mold in a steel plant,based on the existing chamfer furcal cooling structure water slot,a one-hole one-slot scheme with different round hole diameters and round hole positions was proposed.A three-dimensional heat transfer coupling model of the narrow side copper plate and cooling water was established.Industrial measured thermocouple temperatures and cooling water inlet/outlet temperature difference were used for validation.The temperature and velocity fields of the narrow side copper plate and cooling water were calculated for different one-hole-one-slot cooling structure schemes with different circular hole diameters and positions.The results show that the proposed one-hole-one-slot cooling structure with a circular hole diameter of 8 mm and a circular hole position of 26 mm results in a maximum temperature reduction of 14.4-17.6 K on the chamfered hot surface of bent copper plate and a maximum temperature reduction of 10.9-12.3 K on the chamfered hot surface of bolt cross-sectional copper plate,compared to the furcal water slots cooling structure.The cooling water flow in the circular hole reaches 8.4 m/s,effectively cooling the chamfered surface and vertex of the copper plate.Additionally,the cooling water flow rates on both sides of the bolt's water tank reach 10.0 m/s,enhancing the cooling uniformity of the plate around the bolt.
small chamfered moldnarrow platechamfer copper plate coolingstructural optimization
万方数据
维普
