随着对外开放和国民经济的不断发展,以 H 型钢为主体的钢结构正越来越多地用于工业厂房、电站锅炉框架、高层建筑、桥梁、矿山、仓库、码头等建筑中,据估计,“七五”期间我国的 H 型钢需求量达1400万吨。传统的 H 型钢切头定尺均采用圆盘锯或端面铣完成,设备投资大,工作时还需吊车配 With the continuous development of opening up and the national economy, steel structures with H-shaped steel as the main body are increasingly being used in industrial plants, power station boiler frames, high-rise buildings, bridges, mines, warehouses, and piers. During the “7th Five-Year Plan” period, China’s demand for H-beams reached 14 million tons. The traditional H-beam cutting heads are all finished using circular saws or face milling. The investment in equipment is large, and the cranes are needed during work.