Authors: V.A. Korotkov, V.V. Melnikov

Title of the article: Manufacturing of reinforcing elements of grinding tools based on 3D printing

Year: 2025, Issue: 2, Pages: 37-46

Branch of knowledge: 2.5.5. Technology and equipment for mechanical and physical-technical processing

Index UDK: 620.172.24

DOI: 10.26730/1999-4125-2025-2-37-46

Abstract: Studies have been conducted to evaluate the effectiveness of using various materials, as well as schemes and modes of 3D printing for the manufacture of hardening elements of grinding tools based on polymer binders. Samples were made and tested for tensile strength from six types of materials: PLA; PETG; ABS; PETG-filled with carbon fiber; carbon-filled polyamide 6 (nylon) and photopolymer impact-resistant resin. The production was carried out using extrusion FDM printing and stereolithographic LCD printing. Three printing schemes were also used – with a transverse arrangement of layers, with an inclined arrangement of layers and with a longitudinal arrangement of layers relative to the longitudinal axis of the samples. Standard printing modes were used, as well as with increased overlap between layers, reduced cross-section and increased number of layers. It has been established that carbon-filled polyamide 6, reinforced with carbon fibers, has the highest tensile strength in all printing schemes. The tensile strength of samples made of this material, manufactured according to the longitudinal scheme of 3D extrusion printing, is σb =146.5-154.4 MPa, it is several times higher than that of other tested materials and is comparable to those of soft metals and alloys, which makes it possible to use this material for the manufacture of experimental reinforcing structures. grids of grinding wheels. The best 3D printing scheme for reinforcing elements is the longitudinal formation of product layers relative to the direction of action of tensile loads. Increasing the overlap between the layers during 3D printing by 20% and reducing the thickness of the layers and doubling their number makes it possible to further increase the strength of the products by 17% and 5%, respectively. Carbon-filled polyamide 6 is successfully used in further research to find the optimal shape of reinforcing mesh cells for reinforcing grinding wheels on polymer binders.

Key words: grinding wheels reinforcing meshes extrusion and photopolymer 3D printing 3D printing patterns and modes tensile strength

Receiving date: 31.03.2025

Approval date: 22.04.2025

Publication date: 11.06.2025

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