Abstract
Based on the finite element analysis software ABAQUS, the steady and transient temperature field of the high load press is analyzed, and the temperature field distribution characteristics of the ejector cylinder, the moving beam steel wire layer and the frame steel wire layer are obtained. The results show that the heat source can be effectively blocked by adding thermal insulation pad between the mold and the upper mold seat, which is better than the scheme of adding thermal insulation pad at both ends of the ejector cylinder, and the temperature control effect is obvious. The improvement of the surface heat transfer coefficient and the local surface heat transfer coefficient is not obvious for the improvement of the oil temperature.
Highlights
High load press is the basic equipment for the production of large-scale die forgings such as integral bearing frame, turbine disk, etc
The results show that the heat source can be effectively blocked by adding thermal insulation pad between the mold and the upper mold seat, which is better than the scheme of adding thermal insulation pad at both ends of the ejector cylinder, and the temperature control effect is obvious
The heat transfer path from die, upper die seat, and lower base plate to moving beam is dominated by heat conduction
Summary
High load press is the basic equipment for the production of large-scale die forgings such as integral bearing frame, turbine disk, etc. The core components of press frame, main cylinder, moving beam and so on adopt the technology of splitting and clamping, steel wire winding and pre tightening, which has the advantages of strong bearing capacity, high fatigue life and low cost compared with the integral casting structure [1, 2]. Reliable pre tightening force of steel wire is of great significance to maintain the integrity of the frame and improve its fatigue resistance and reliability. If the temperature is too high, it will bring much harm, such as reducing the viscosity of hydraulic oil, serious leakage, reducing the system efficiency, serious oil oxidation, shortening the service life, poor lubrication of components, increasing wear and tear, and aging of seals [3]. The simulation results are basically consistent with the measured results of the temperature field, which verifies the finite element model
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