关键词: 钢丝缠绕, 偏载, 剖分坎合, 预应力, 重型结构

Abstract: Heavy bearing frame is a key component of heavy equipment, its integral manufacturing touches the ultimate capacity of numerous processes and techniques and becomes the bottleneck of heavy construction. Through analysis of the development and application of prestressed steel wire wound frame, the design route of the heavy pillar and arched girder totally bumpy ridge joining frame with steel wire wound is put forward to resolve the manufacturing problems of main bearing frame of above 20 000 t-class hydraulic press. In the case of designing the 400 MN die forging hydraulic press with single-cylinder and single bearing frame, through 1:10 model test and finite element modeling contrast, the deformation characteristics and carrying capacities of the pillar and arched girder totally bumpy ridge joining frame under the action of specified force system (center loading, eccentric loading, etc) are analyzed, and it is found that under a certain pre-tightening coefficient, the pillar and arched girder totally bumpy ridge joining frame is similar to the whole frame in respect of deformation characteristic and bearing capacity. So, it is suggested that this structure be used for the single frame hydraulic press with the carrying capacity of more than 200 MN. The application of this structure will directly promote the development of the heavy hydraulic press and related equipment manufacturing industries. The theory and the algorithm of the artificial neural network are applied in the research of the technique and the composition, the gross mass fraction of element, the thickness of surface alloying layer as well as the absorption rate is built. The calculation results are in good agreement with the experimental results.

Key words: Bumpy ridge joining, Eccentric load, Heavy structure, Prestress, Steel wire wound