Research on optimization design of conformal cooling channels in hot stamping tool based on response surface methodology and multi-objective optimization

Abstract

Abstract. In order to optimize the layout of the conformal cooling channels in hot stamping tools, a response surface methodology and multi-objective optimization technique are proposed. By means of an Optimal Latin Hypercube experimental design method, a design matrix with 17 factors and 50 levels is generated. Three kinds of design variables, the radius Rad of the cooling channel, the distance H from the channel center to tool work surface and the ratio rat of each channel center, are optimized to determine the layout of cooling channels. The average temperature and temperature deviation of work surface are used to evaluate the cooling performance of hot stamping tools. On the basis of the experimental design results, quadratic response surface models are established to describe the relationship between the design variables and the evaluation objectives. The error analysis is performed to ensure the accuracy of response surface models. Then the layout of the conformal cooling channels is optimized in accordance with a multiobjective optimization method to find the Pareto optimal frontier which consists of some optimal combinations of design variables that can lead to an acceptable cooling performance.

Cooling Pipe Network System in the Quenching Green Equipment Design Method Based on the “Solid Contact-Fluid Heat Transfer” Mode

“…A cooling channel design method of quenching device which is more in line with the actual process requirements is put forward. However, in order to simplify the calculation, this paper ignores the influence of radiation heat transfer on the cooling effect, and the rationality of the mathematical model should be determined through further research [12]. In the next step, according to the principle of heat transfer, a cooling effect evaluation model will be established to evaluate several groups of cooling channel design schemes and compare the cooling effects of different designs.…”

“…. (12) where Δ represents the equivalent roughness of the material. The fluid pipe network system's network diagram is formed of n pipe segments and m nodes.…”