Hybrid additive technologies in the production of equipment for the food industry

The article explores the application of hybrid additive technology using WAAM synthesis in combination with wave strain hardening and machining for the production of food processing equipment. Despite the widespread use of additive technologies in the aerospace and automotive industries, their potential in the food industry remains underestimated due to high demands on surface quality, corrosion resistance, and compliance with Hygienic Design standards. The proposed combined approach makes it possible to eliminate key disadvantages of WAAM synthesis, such as surface roughness, porosity, and structural heterogeneity. Experimental studies conducted on 309LSi stainless steel demonstrate the formation of a finely dispersed microstructure with an increase in hardness of up to 70%. The technology ensures the creation of monolithic products with improved mechanical properties and compliance with strict hygienic requirements. The results of the work open up opportunities for the production of complex parts of food processing equipment: augers, reactor housings, agitator blades, nozzles with internal channels and non-standard elements. The proposed method is a cost- effective solution for small-scale production and repair of equipment using standard materials certified for the food industry.