庆江机器厂1998年的重大攻关项目;设计制造塔机方梁焊后校正工装日前已顺利通过厂级鉴定。塔机中的方梁焊后的扭曲变形(螺旋变形)曾一度阻挠塔机生产,因无校正扭曲变形的设备,1998年初QTZ80塔机生产几乎陷入瘫痪状态。厂领导和有关部门非常重视,多次召集专题会分析研究对策,将? Qingjiang Machinery Factory’s major research project in 1998; the design and manufacture of tower crane beam welding correction tooling has passed the factory level certification. The twisted deformation of the square beam in the tower crane (helical deformation) once blocked the production of the tower crane. Due to the equipment without distortion correction, the production of the QTZ80 tower crane was almost paralysed in early 1998. Factory leaders and relevant departments attach great importance, and many times to convene topics to analyze research and countermeasures.