Abstract
One of the important steps in the design of hot stamping tools is the analysis of their cooling system. This article presents an authorial, two-stage approach to solving this problem. The first stage consisted of a series of simulations of the hot stamping process in the Autoform package, with initial selection of shape and arrangement of cooling channels. These results allowed for the design of the tool for which the coupled thermal-flow analysis was carried out. The correctness of the adopted design assumptions has been confirmed by experimental tests. A trial series of drawpieces made in production conditions meet the requirements for hardness, mechanical properties, and appropriate microstructure. The presented procedure has become the practice of the drawpiece producers.
Highlights
IntroductionThey have, first, a more even temperature distribution on the tool surface and the lack of thermal bridges has a positive effect on their wear
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[31], which allows for an approximate but used the functionality of the Autoform 7.0 hot stamping process simulation software. This makes it possible to pre-select the toForm Engineering GmbH, Pfäffikon, Switzerland) [31], which allows for an approxiarrangement and diameters of cooling channels
Summary
They have, first, a more even temperature distribution on the tool surface and the lack of thermal bridges has a positive effect on their wear This problem is discussed in works [15,16,17] which highlight a significant improvement in cooling conditions for molds made in additive technologies. The temperature distribution on the surface of the drawpiece and the hardness at selected points obtained as a result of computer simulations were assessed, but no experiments were conducted to confirm the correctness of the obtained results For this reason, in the presented work, the process of selecting cooling channels and the analysis of the efficiency of the cooling system for an exemplary tool, based on the results of computer simulations, will be discussed in detail.
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