Quantitative reverse deformation arrangement based method for designing cast model
A technology of anti-deformation and deformation, which is applied in the direction of casting molding equipment, etc., can solve the problems of inaccurate prediction of casting size changes and remaining machining allowances, inconformity with energy saving and consumption reduction, and increasing machining allowances, so as to shorten calculation iterations The number of times, the solution to the lack of machining allowance, and the effect of improving product performance
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[0038] In this embodiment, a set of large-scale hydraulic turbine blade casting models are designed through the technology of the present invention. The outline size of the blade is: 3400×3400×1100mm, which is used for the runner of 700MW large-scale water turbine. Because the blades are driven by the water flow during the operation of the runner, the design of the profile line is very complicated and the distortion is serious. The complicated curved surface shape makes the blade extremely easy to deform in the hot working process such as casting and heat treatment, and it is difficult to predict the deformation trend and amount of the blade based on experience. The original technology can only ensure that it does not appear in the end by increasing the machining allowance of the casting The phenomenon of "lack of meat" greatly increases manufacturing costs and the difficulty of subsequent mechanical processing. In this embodiment, the blade mold design is pe...
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