Abstract
Additive manufacturing of metal parts occupies an increasing number of areas of mechanical engineering, but still remains too expensive for mass use. Based on the experience in the production of combined metal-metal polymer forming parts of molds, a new method for the production of composite parts from a metal shell filled with metal polymer is proposed. The strength calculations by the finite element method of the exoskeleton part and a sample of simplified geometry are given as the basis of the study. A comparison of the strength characteristics of parts made of various materials and their combinations showed high strength characteristics of a composite part made of a metal shell and a metal polymer filler. The metal-metal polymer composite part is distinguished not only by its high strength, but also by a significantly lower cost due to the reduction in the volume of 3D printing with metal. The article substantiates the main problems facing researchers and technologists in the development of a practically applicable technology for producing such composite parts.
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