Abstract
The paper describes the results of investigations on application of composite materials – polymer concrete and fibre concrete for manufacture gear cases of mechanisms used in mining and metallurgical industry centrifugal pump casings. The methods of establishing efficient compositions of polymer concrete and fibre concrete, based on a filler with gapped grading in which the pinholes in coarse fractions are filled with smaller fractions have been developed. After hardening, such mixtures have the strength 1.5...2 times higher than the items made of metal. The efficient additive of steel fibre to fibre concrete has been identified which improves the strength characteristics. The regularities of the impact on the strength and structure of polymer concrete and fibre concrete of the rotation frequency of the working element of the mixer and time of mixing the mixture components are identified. TS-250 gear and centrifugal pump casings are made by casting method and are tested on a test bed. The results obtained make it possible for us to recommend the developed compositions of polymer concrete and fibre concrete for application in engineering industry to manufacture gear and centrifugal pump casings.
Highlights
The modern stage of industrial revolution 4.0 is characterized by the widespread use of new constructional materials characterized by improved technological properties in comparison with traditional metals: cast iron, steel, aluminum, etc
Polymer concrete is a composite material, which consists of mineral aggregates, fillers, and a polymer resin acting as a binding material
Polymer concrete and fibre concrete by their characteristics comply with the requirements set to materials for gear and centrifugal casings manufacture to full extent
Summary
The modern stage of industrial revolution 4.0 is characterized by the widespread use of new constructional materials characterized by improved technological properties in comparison with traditional metals: cast iron, steel, aluminum, etc. Polymer concrete and fibre concrete are worth noting among such materials widely used in construction industry These composites are quite good to use in engineering industry, in particular for manufacture of equipment for mining and metallurgical complex [1, 2]. A significant amount of equipment used in mining enterprises and metallurgical plants operates in difficult conditions: work with aggressive substances, high dust content, sharp change of temperature, transportation of liquids and highly abrasive slurry, etc. It is expedient to replace the traditionally used metals with composite materials which have improved characteristics. [3, 4]
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