Theoretical And Experimental Investigation On Digital-controlled Manufacturing Parameters Of Oil Pipes

Oil pipes that are steel ones used for transporting oil and natural gas and are fixed inside sleeves, in which oil and gas move up to the orifice of oil well, are widely applied in petroleum industry. Hoops with thread at ends generally connect oil pipes, which are one of important links between them and the quality of those directly affect the hermetic performances of oil well. Digital-controlled technology of pipe thread in some of the developed countries has come up to advanced world standard, but those in developing countries are blockaded. Most of the pipe threads manufacturing equipments are mechanical ones with the same structures and function in China. With the development and popularization of digital-controlled technology, some of digital-controlled pipe threads have been applied, which furthered the polytechnic development in pipe threads and improved manufacturing efficient as well their quality to some extent. However, manufacturers have no chances to probe the processes on pipe threads to each other because they suppress the manufacturing processes about oil pipe threads and the technology is still in the initial stage.According to the optimization theory the influential facts and different features of processes parameters are studied in new conditions such as digital-controlled system and sharpeners etc. The mathematics model of optimized cutting parameters that are theoretically determined by the quality of threads cutting is set up.Cutting experiment has a high place in research of cutting metal. The optimization of processing metal, especially ones of a series of practical problems in cutting parameters must be solved by experiments. With the progress of science and technology, particularly the development of digital-controlled technique makes cutting experiment much more simple. Various speed and different supplement are given in one process, and also are conveniently accomplished with another sharpener by programming and adjusting multiple buttons. The scheme that is simple and effective for cutting experiment is given throughout the cutting experiments and the analyses for them, and a set of optimal process parameters is decided.Production efficiency, process precision and product cost of a digital-controlled lathe depends largely on the performance of sharpeners. It introduces the module for choosing sharpeners, which is the one for the benefit of economy, society and environment through considering synthetically function, quality, cost, service and the like and a fundamentally effective way for the survival and development to enterprises.By the experiments and research above make the digital-controlled thread lathe that is reformed plays an effectual role, which will bring enterprises more economic and social efficiency...