Application of high-strength bainitic cast iron for the production of replaceable parts of soil-cultivating agricultural machinery

Abstract

A comparative analysis of the exploitation of foreign and Ukrainian replaceable parts of soil-cultivating agricultural machinery is carried out. The resource of the work of domestic parts is several times less than the resource for foreign models. In addition, imported parts do not match the attachments of equipment produced in Ukraine. The number of foreign agricultural machinery is constantly increasing, which requires an increase in the supply of replacement parts, the cost of which is 5 – 8 times higher than the cost of parts produced in Ukraine. In this regard, the task of replacing imported parts with similar parts of domestic production with a high resource of work, not inferior to the resource of the best samples of foreign production, is very relevant. The Institute for Material Science Problems of the National Academy of Sciences of Ukraine has carried out work on the development of a technology for the production of cast plowshares from high-strength bainitic cast iron with a resource comparable and exceeding that of the best foreign samples. The purpose of this work is to develop a technology for the production of cast interchangeable parts in a high service life in replacement of existing serial steel samples. As a result of laboratory tests it was established that cast replacement parts for soil-cultivating agricultural machinery when working in soils of different types have a service life of 2-5 times higher than serial steel plowshares