Polygonizing controlled rolling of slabs for making oil country tubes

The study of structural changes during hot deformation metal during controlled rolling. The influence of preheating temperature and deformation degree on the size and shape of austenite grains. The definition of the polygonal structure of the austenite.

Подобные документы

  • This work is devoted to the decision of scientific and technical problems of the day, namely to the development of scientific and methodological bases of forming of structural and phase composition of alloys synthesized by the combined processes

    статья, добавлен 20.09.2022

  • Increase in the use of hard, high strength and temperature resistant materials in engineering necessitated the development of machining techniques. Abrasive flow machining as process non-conventional machining processes. Magneto abrasive flow machining.

    статья, добавлен 02.06.2014

  • Evaluation of the technical system and its subsequent use for decision-making to ensure complex technical systems with appropriate quality of work. The characteristics and specificity of the model changes performance States based on the Markov chain.

    статья, добавлен 29.01.2016

  • The problem of fuzzy multicriterial analysis of local energy conversion systems. Construction of training samples for artificial neural networks. Application of multiagent calculating models. Transition from vectorial criterion to a scalar combination.

    статья, добавлен 28.08.2016

  • Defining and analysis the essence of robot is an automatic device, which has a manipulator – mechanical analogue of human hand, and manipulator control system. Consideration and characteristic of the structural features model of domestic robot–helper.

    статья, добавлен 29.01.2016

  • Analysis of the main causes of destruction of adhesive joints. Structural and technological stress concentrators, because of which cracks develop during operation. General characteristics of the resistance of adhesive bonding to failure at all stages.

    статья, добавлен 30.04.2018

  • The main stages of the automatic assembly of cylinder connection. The structural elements of the flexible automated production. Prospect for the automation of machine building production. The main types of heat exchange in technological systems.

    контрольная работа, добавлен 05.04.2016

  • Properties and structure of hydrocarbons. Types and communication aromatics. The nature of the relationship between the carbon atoms. The methods of extraction and processing of oil. The use of the rectification columns for fractionating of raw materials.

    презентация, добавлен 30.06.2014

  • The optimization procedure in computer-aided design problem. The methodic of optimal weight coefficients values choice. The use of structural models in the form of tables and morphological trees of quality variants of the signs of aerial vehicles.

    статья, добавлен 14.09.2016

  • Determination the rigidity of constructive elements involved into the rated diagram of electromechanical system of the drive of spherical mill. Defining the rigidity of the elements entering a kinematic circuit of any electromechanical systems of drives.

    статья, добавлен 28.11.2016

  • The surfactants have been objects of studies all over the world. Development of approach to surfactants with controllable structure and properties based on the natural raw materials applicable for cosmetics production as dispersed systems stabilizers.

    статья, добавлен 23.09.2016

  • Розглянуто розроблення багатошарових захисних рідинних матеріалів для екранування електричних, магнітних та електромагнітних полів широкого частотного діапазону. Виготовлено серію рідких екрануючих сумішей на основі стандартних сертифікованих фарб.

    статья, добавлен 31.01.2024

  • Transit of natural gas along the territory of Ukraine to the countries of the Western and Central Europe. Main resons of the loss of pipeline efficiency. Necessity for studying of the operation modes of the gas transport system during underloading.

    статья, добавлен 01.12.2017

  • The establishment of unfavorable modes of operation of mining equipment under which there is an unstable position in space of the suction head during its descent to the bottom. The influence of hydrostatic pressure on the strengthening of the digging.

    статья, добавлен 30.07.2016

  • Structure of three-cone rock bit with inserted hard-alloyed rock-destruction and protecting equipment, in which the chief components are marked. The minimally possible set of operators, which support qualitative performance of technological process.

    статья, добавлен 14.09.2016

  • The research revealing of the amount of regular wood and hazardous wood treated in Finland in this year. The most common techniques are applied to wood treatment in this country. Hazardous waste processing. Prevention of producing waste. Energy recovery.

    реферат, добавлен 16.11.2014

  • Features of the application of methods for monitoring the state of the wooden structure in the production flow. Ways to optimize the prediction of wood properties using various NDE methods. The combination of methods for effective quality control of wood.

    статья, добавлен 29.11.2018

  • Hydrothermal sol-gel synthesis of hexagonally ordered silicas using a hybrid template system is reported. Silicas were characterized by IR spectroscopy, X-ray diffraction techniques as well as electron microscopy. The hexagonal structure of MCM-41.

    статья, добавлен 30.07.2016

  • Motion systems as core technologies, as mechanical systems, like microelectronic manufacturing equipment, are required to achieve high speed and accuracy. The influence of the dynamics of a mechanical system on the quality of the position tracking syste

    статья, добавлен 26.08.2020

  • NbN and Nb-Si-N films were deposited by magnetron sputtering the Nb and Si targets on silicon wafers at various bias voltage. The films were annealed to establish their stability. The films were nanostructured represented an aggregation of crystallites.

    статья, добавлен 30.07.2016

  • Polytetrafluoroethylene as one of the promising polymers for tribotechnical purposes. The use of polysulfonamide fiber to increase the wear resistance of polytetrafluoroethylene under conditions of friction without lubrication in reciprocating motion.

    статья, добавлен 11.08.2021

  • Getting the coordination compounds of Zn (II) and Cd (II) from 3-methoxybenzene acid hydrazide using hot etanolnyh or water-ethanol solutions in weakly acidic medium. Participation organic ligand molecules in the formation of solid Zn(II) і Cd(II).

    статья, добавлен 23.02.2016

  • Using transmission electron microscopy methods the layer by layer analysis of the bulk hardened superior quality rails is carried out, phase state and defect substructure gradients are established. Character of changing of structure-phase states.

    статья, добавлен 30.07.2016

  • The comparison of natural modes for the first and second transverse oscillation modes obtained by numerical simulation and finite element package of analytical calculation of the core model. The analysis waveforms for different values of the defect.

    статья, добавлен 29.06.2017

  • Structure of engineering systems. A description of the statistical procedures recommended for use in reliability analysis "related" components. The choice of an appropriate probabilistic model for predicting the reliability of components of one's sibling.

    статья, добавлен 14.09.2016

Работы в архивах красиво оформлены согласно требованиям ВУЗов и содержат рисунки, диаграммы, формулы и т.д.
PPT, PPTX и PDF-файлы представлены только в архивах.
Рекомендуем скачать работу и оценить ее, кликнув по соответствующей звездочке.