Abstract
The study of the operating conditions of oil equipment made it possible to identify a set of indicators that most fully characterize the quality of plastic parts. It is known that the quality of parts of products made of various materials is a combination of mechanical, physical and operational indicators of any equipment. It is partially formed during their manufacturing process, depending on their materials and manufacturing method. And plastic parts are very different from metals depending on the area of application. This is due to the technologies for manufacturing structural products and individual parts from them. When manufacturing technologically complex parts from polymer materials, it is possible to achieve the required quality by controlling production modes depending on the grade of materials and the design of the parts being manufactured. Production of a thread of plastic details is rather difficult, than on metals. It is connected with the physical-mechanical processes coming in the course of production of concrete thread details from plastic by method of pressing and casting under pressure. Also mechanics of formation of plastic threads on details of the oil-field equipment on the specific properties differ from the threads received by a machining method on metals. As thread surfaces on plastic details are formed in compression molds depending on materials and the modes: temperatures, pressure and time of production. These regime parameters and guided parameters play a part at a guaranty of physical- mechanical properties of details in the course of production. In this regard, it in this article influences of technological parameters of production on quality of thread details oil-field equipment are considered. At the same time, in a wide range of operating parameters, the achievable boundaries of quality indicators for parts operating in the designs of exploration, drilling and operation equipment in the oil and gas industry are investigated. Mathematical relationships are established between the quality indicators (shrinkage and strength) of parts on the pressing temperature. Keywords: thread plastic details, accuracy, shrinkage, pressing pressure.
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