Calculation of energy-saving press-forms for the manufacture of products from composite materials

Abstract

Purpose. Development of a method of thermal calculation in the design of energy-saving press-forms for the manufacture of products from composite materials.Research methods. Analysis of existing thermal calculations of press-forms; analysis of the theory of heat transfer and thermal conductivity and calculations based on them.Results. In the course of the work, the processes of convective heat transfer from the lateral surface of the press-forms are clarified and described; a method of calculating the losses of energy by heat transfer at a certain temper­ature on the outer surface of the press-form has been developed. In order to reduce energy consumption, it is proposed to apply a layer of thermal insulation material on the heat-transfer surface of the press-form; on the basis of the laws of thermal conductivity, a method for calculating its thickness is proposed to achieve the optimum temperature on the outer surface of the press-form.Scientific novelty. There are no similar methods in the literature for calculating the temperature on the insulated surface of the press-form and the reduced heat transfer in this connection.Practical value. The proposed calculation method can be used in the design of energy-saving press-forms for the manufacture of products from composite materials.