Ancient blacksmiths, the Iron Age, Damascus steels, and modern metallurgy
The history of iron and Damascus steels through the eyes of ancient blacksmiths. Observation of color changes during heating and estimating of hardness by scratch tests, to have determined some key parts of the present-day iron-carbon phase diagram.
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 20.09.2022The recent work on Micro Aerial Vehicles (MAV) at the Institute of Aerospace Systems. Basics of MAV Research. Flightmechanical simulation. Wind tunnel tests. Overall controller system structure. The inertial measurement unit. On-Board computer structure.
творческая работа, добавлен 18.01.2014The roller of the belt as the most important parts of the conveyor, being subjected to continuous stress both during operation and in stopping periods. Causes and weight percentage of failures due to fatigue. Sealing system with simple labyrinth.
статья, добавлен 27.12.2016The work of complex heat-recovery systems using water-hiting and air-heating heat-recovery exchangers was investigated. The combined use recovered heat to heat the return heat-network water, water of chemical water-purification system or combustion air.
статья, добавлен 22.04.2021Дослідження та аналіз колірних характеристик відбитків цифрової системи друку Xerox Color C70 порівняно з відбитками плоского офсетного друку. Характеристика проблеми комплексної об’єктивної оцінки якості цифрового друку та порівняння його із офсетним.
статья, добавлен 06.06.2023Geometry enhancements, general beam section calculator, body diagrams and grid point force balances, graphics enhancements, scripting language and polygon and freehand selection, their application in the development of parts. Results viewing enhancements.
презентация, добавлен 21.02.2014Determination 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 28.11.2016The configuration of an anorectal pressure gauge probe, the study of the location of sensors, the radial array of anal sensors, the location and length of the balloon, the pressure sensor inside the balloon. List of tests based on potential indication.
статья, добавлен 29.03.2020Features of the two-phase model of the structure of keratin fibers. Estimation of the importance of critical and equilibrium stresses in the fibril, transfer of its stress to the matrix. Study of a possible connection between microfibrils and matrix.
статья, добавлен 30.05.2022Image processing of assembly parts at specified automated line from FESTO company to automate monitoring and evaluating of obtained data together with supporting of educational activities for field: "automation and control of machines and processes".
статья, добавлен 26.08.2020Результаты расчетов методом CALculation of PHAse Diagrams в сравнении с экспериментальными данными, полученными методом дифференциального термического анализа. Опытные составы с добавками гафния в исследованном диапазоне легирования и составом без него.
статья, добавлен 29.09.2016Features the design of tooling for casting under pressure of zinc alloys. The problem that arise when designing a press-forms of analysis. Experiments to study thermal stability of materials, parts, equipment subject to cyclic thermo-mechanical treatment.
статья, добавлен 17.12.2016Establishing conditions for quality surface finish in grinding abrasive wheel. Determine the optimal mode grinding, allowing you to get the highest performance and lowest cost processing, providing the necessary tech-tech requirements for machine parts.
статья, добавлен 14.09.2016Methodical approach to the determination of key parameters of rotary positioning units intended for manufacturing technology and robotics. The applicability of the selected methodology for measuring selected parameters of the uniaxial positioning table.
статья, добавлен 26.08.2020Methods of the equation of the cutting edge in the absolute coordinate system. A helix - a trace of movement of the cutting tool along the workpiece. Characteristics of the mathematical model of the formation of the microrelief surface when grinding.
статья, добавлен 06.05.2018Cylinder shaped parts – one of the mostly used in printing presses. A new technology of strengthening and recovery of details based on vibration roll burnishing is offered in the article. Experimental work and scientific conclusions are described.
статья, добавлен 29.07.2016Rational modes of printing volumetric samples with a working thickness of the 316L powder layer of 40 μm to achieve a density of volumetric samples/ Determination of the density of metal samples by the metallographic method on an optical microscope.
статья, добавлен 19.03.2024Class of application of heat pumps in industry. Review of the carbon dioxide heat pump in the transcritical cycle of operation according to the expander-ejector scheme. Development of methods for selecting control valves for a given heat pump circuit.
статья, добавлен 02.02.2019The historical and formation stages of the Lviv school of glassmaking are approximated. The modernization of educational mechanisms are identified, ways of their solution are suggested and applied measures that will promote implementation are outlined.
статья, добавлен 16.02.2022General characteristics of gas motor fuel. The current state of the market of gas motor fuel and infrastructure for use of CNG. Problems in the development of the NGV market and their solutions. Analysis of interest in the use of natural gaseous fuels.
статья, добавлен 10.03.2019Physical and chemical research methods of mechanically hydrated cement binder with organo-mineral additive - silica fume. Study the effect of additives on the kinetics of the formation of calcium silicate core lowly. Role the microsilica as a binder fume.
статья, добавлен 24.02.2016Integration of the R.I. 01 industrial robot into the working system of the BB-01 flexible line. Operational and design features of the R.I. 01 loading robot. The central spindle of the system. The horizontal frame holding the arm of the loading robot.
статья, добавлен 25.10.2010The risk-creating factors of the projects of creating samples of unmanned aviation equipment were determined. An approach to risk assessment at various stages of research and development works on the development of unmanned vehicles is proposed.
статья, добавлен 13.07.2022Analysis of requirements for electric-drive of mechanism of pulsed wire feed, and the benefits of using a special Brushless Direct Current electric-drive. Design of half-bridge circuit to regulate the strength of the current phase of the stator windings.
статья, добавлен 22.12.2016The present study is a mathematical modeling aimed at the dynamic force analysis of printed circuit boards in order to eliminate dynamic stresses to an acceptable level and ensure the strength and reliability of the printed circuit board design.
статья, добавлен 02.06.2022