Abstract
The performance of an extractor device used in the food industry was studied from the development of structural analysis through computational modeling based on finite elements. These analyses considered the mechanical properties of AISI 304 and 420 stainless steels, in addition to the tribological aspects of the device in operation. Initially, uniaxial tensile tests were carried out according to the ABNT NBR 6892 standard and hardness tests were carried out according to ASTM E384, E92, and E18 standards. From the mechanical tests, structural analyses were carried out numerically on each of the components of the extractor device. After analyzing all the components, the device was assembled to be tested in operation. The wear and service life of devices made from these two materials were evaluated. From this study, it could be concluded that the extractor device made with AISI 420 stainless steel, in addition to having a lower manufacturing cost, suffered less wear and had an increase in service life of up to 650% compared to the extractor device made with steel stainless steel AISI 304.
Highlights
Modern or world-class industries increasingly seek to develop structured production systems with methodologies and instruments that enable widespread application throughout the organization [1].Aiming at the application of these concepts and techniques in a manufacturing environment, demands have emerged for the development of new devices and components aimed at improving the performance of the equipment that make up the plant production lines [2].Within a more specific approach, in the food industry, stainless steels are the materials most widely used in the construction of equipment, systems, and manufacturing processes due to their great versatility
Stainless steels appear as excellent materials for these applications as they are indicated for use in environments or equipment subject to extreme working temperatures and atmospheres with high corrosion rates, when there is a need for noncontamination of fluids by residues of corrosion, activities involving dangerous fluids, when maximum protection against possible leaks is required, and for applications in equipment or components subject to great mechanical stress or that are subject to microbiological contamination [4]
The manufacture of the prototypes of the extractor device for the study was made in AISI 304 stainless steel and the final version in AISI 420 stainless steel
Summary
Within a more specific approach, in the food industry, stainless steels are the materials most widely used in the construction of equipment, systems, and manufacturing processes due to their great versatility. For this reason, their employment has been playing an increasingly important role, perhaps, fundamental, in our daily lives [3]. Aiming at a correct choice for the subsequent application of stainless steels in mechanical components and devices, it is extremely necessary to develop methods, processes, tools, and analyses suitable for the materials studied, so that a final product is produced that meets all the requirements of mechanical, structural resistance, and manufacturing quality [5] Stainless steels appear as excellent materials for these applications as they are indicated for use in environments or equipment subject to extreme working temperatures (high or low) and atmospheres with high corrosion rates, when there is a need for noncontamination of fluids by residues of corrosion, activities involving dangerous fluids, when maximum protection against possible leaks is required, and for applications in equipment or components subject to great mechanical stress or that are subject to microbiological contamination [4].
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