Method for optimizing casting cooling process parameters of aluminum alloy steering gear valve shell
An optimization method and technology of process parameters, which are applied in design optimization/simulation, CAD numerical modeling, special data processing applications, etc., can solve problems such as difficulty in finding out the specific values of optimized parameters and inability to meet production requirements, etc. Improve production efficiency and economic benefits, solve the accuracy and optimization of results, and improve the effect of quality qualification rate
Pending Publication Date: 2021-12-21
NANJING UNIV OF TECH
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[0004] The purpose of the present invention is aimed at the optimization design method of the cooling process parameters in the casting molding process of the existing aluminum alloy steering gear valve housing. It is difficult to find out the specific value of the optimized parameters, which cannot meet the actual production needs. A method for optimizing the casting cooling process parameters of the aluminum alloy steering gear valve housing is invented to reduce the defect volume of the steering gear valve housing and improve product quality.
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[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0033] A method for optimizing casting cooling process parameters of an aluminum alloy steering gear valve housing, the flow chart of which is shown in figure 1 shown, including the following steps:
[0034] 1. Establish a numerical model of the gating system and a defect prediction model for the casting process of the aluminum alloy steering valve housing of the optimization object;
[0035] The steps to establish the numerical model of the gating system for optimizing the casting process of the object are as follows:
[0036] (1) Establish the pouring system structure in equal proportions according to the actual production conditions, such as figure 2 As shown, including runner 1, casting 2, core 3, cooling pipe 4, etc., determine the pouring process parameters, use finite element software to mesh the structural model, and set materials an...
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The invention discloses a method for optimizing casting cooling process parameters of an aluminum alloy steering gear valve shell. The method comprises the following steps: (1) establishing a pouring system numerical model and a defect prediction model in the casting forming process of the aluminum alloy steering gear valve shell as an optimization object; (2) selecting a plurality of cooling system process parameters as optimization variables, determining a design space and an optimization target, and extracting test sample points by adopting a Latin hypercube test design method; (3) introducing a test design sample into the numerical model for analog simulation to obtain a target value of the defect volume of the steering gear valve shell, establishing a nonlinear approximation model reflecting the relationship between input and output by adopting a Kriging interpolation method, and evaluating the reliability of the model; and (4) according to the Kriging model, obtaining a steering gear valve shell cooling process parameter combination with the minimum defect volume, substituting an optimization result into the gating system numerical model and the defect prediction model for analysis, and verifying the cooling system process parameters until the optimal process parameters are obtained.
Description
technical field [0001] The invention belongs to the technical field of high-strength metal forming, in particular to the aluminum alloy forming technology, and specifically relates to a method for optimizing the casting cooling process parameters of an aluminum alloy steering gear valve housing. Background technique [0002] The steering gear valve housing is a part of the steering gear. Its function is very important. It protects and fixes the rack and input shaft, and at the same time limits the stroke of the rack. The oil outlet and oil inlet holes on the steering gear valve housing The position of the steering gear will directly affect the hydraulic characteristics of the steering gear assembly, which is related to the driving safety of the car. At present, as the country's requirements for energy saving and emission reduction gradually increase, more and more companies have increased their investment in lightweight technology for auto parts. As a part of the chassis par...
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Login to View More IPC IPC(8): G16C20/10G06F30/23G06F111/10
CPCG16C20/10G06F30/23G06F2111/10
Inventor 苏小平陶健周大双
Owner NANJING UNIV OF TECH