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
Analysis of criteria for steels warping susceptibility under the thermochemical treatment. Study of value of the details warping during the quenching. Analysis of residual internal pressures in hardened layer and kinetics of austenitic grain growth.
статья, добавлен 30.01.2017A resource-saving technology complex processing of highly mineralized mine waters of mining enterprises of the Kryvyi Rih iron ore basin has been developed. Of all the known methods of water desalination, the only method in this case is reverse osmosis.
статья, добавлен 26.12.2023The comparative analysis of the microstructure, phase and chemical composition of the experimental alloys of the Fe-W type with the standardized grade ferrotungsten. The feasibility of using Fe-W for the manufacture high tungsten materials based on iron.
статья, добавлен 30.01.2016Determining the effect of coating thickness on Hardness which is used on the protective layer when polyester coating is applied on the aluminum coil. Determining the scratch hardness using Hardness pencils test according to Wolff-Willborn "ASTM D3363".
статья, добавлен 06.05.2018Types of tool materials: from high-carbon steel to ceramics and diamonds, and their use as cutting tools in the modern metal industry. Cutting tool and its characteristics: hardness, strength. Achieving an acceptable tool life before replacing it.
статья, добавлен 26.04.2019The concept and functional characteristics of diamond-like films of amorphous carbon with a high concentration of carbon with SP3. The peculiarities of their practical use. Diagram of the coating, its physical and chemical properties, the benefits.
статья, добавлен 12.06.2015Technology of iron-concrete products. Optimization of experiment in chemistry and chemical technology. Blocks from rocks for facing, architectural-construction, memorial and other products. Methods of determining water absorption and frost resistance.
статья, добавлен 29.07.2021Combined heating - a modern way of organizing the heat supply of the house. Use of independent sources of thermal energy. The advantages of using solar collectors. The principle of operation of the stove, fireplace insert. Types of combination boilers.
доклад, добавлен 14.03.2019Scientific justification for automated control method of optimal charge of pebble mill operating in series with a magnetic separator in the second stage of crushing in magnetic separating plants that process on iron ores with varying physical properties.
статья, добавлен 23.03.2016А technology for manufacturing composite materials - flocculants-coagulants on aluminum-silicon and iron-silicon base. The evaluation of the effectiveness of the developed flocculants-coagulants for cleaning of natural water and industrial wastewater.
статья, добавлен 11.01.2018Study the structure of the coating made of composite material that contains wear-resistant components SiC-Al2O3. The use of a metallic binder based on iron in composite production. The properties of the obtained coatings with the steel counterface.
статья, добавлен 29.01.2016Joint with interference fit as third in total connections in engineering after a gap of cylindrical and threaded. The inductor for locomotive wheelset disassembly - one of the typical representatives of the induction coil for heating intricate parts.
статья, добавлен 14.09.2016Influence of the type of machining and tool material on the structural state of the surface layer of steel during machining. Advantages of turning with composite 10 incisors compared to grinding. The occurrence of tensile stresses during metal processing.
статья, добавлен 14.09.2016The main objective is the operation of heating systems heat supply residential, public and industrial buildings and structures in order to provide municipal needs (heating, ventilation and hot water supply). Checking calculation of heat supply systems.
статья, добавлен 10.03.2019The study of the influence of the surface hardness of the auger on its wear during dehydration of solid waste in the garbage truck. Usage of the method of regression analysis, the logarithmic dependencies of auger wear depending on the hardness.
статья, добавлен 23.06.2022The conductive nanocomposite films on the basis of reactionary copolymers received. The threshold of their percolation is determined. It was shown that its value depends on the size of specific surface of nanotubes and conditions of composite obtaining.
статья, добавлен 23.09.2016- 17. The influence mechanism of ferrite grain size on strength stress at the fatigue of low-carbon steel
The study of the properties of low carbon steel. Methods of cold plastic deformation. The rationale for the recommended annealing temperature. Is the microstructure of low-carbon metal. The study of the conditions of plastic deformation of ferrite.
статья, добавлен 29.01.2016 The conductive nanocomposite films based on functional reactive copolymers and bifunctional alcohols. Creation multiwall carbon nanotubes. Dependence properties of the nanocomposites from the specific composite composition and obtaining conditions.
статья, добавлен 30.07.2016In this study, porous Ti-Nb-Zr biomaterial which is not included poison elements was successfully fabricated by powder metallurgy using space holder of NH4HCO3 and foaming agent of TiH2. Biocompatibility of porous Ti-Nb-Zr alloys is similar to Ti-6Al-4V.
статья, добавлен 30.07.2016Directions of development of production technology of high-precision parts. Research in the field of management precision and quality parameters of the treated surface. Improvement of the technological process, equipment, instruments and devices.
статья, добавлен 06.12.2016Household appliances as electrical / mechanical machines that perform some household functions, such as cooling / heating, cooking or cleaning. Its classification and functional features, modern achievements of the industry and prospects for improvement.
статья, добавлен 20.02.2019Information about the general state of technologies for the utilization of secondary energy resources and environmental resources. The essence of phase transitions in food production technologies. The possibility of creating energy-material circuits.
статья, добавлен 10.06.2022Aluminum can be considered green when its production and alloys processing are low-carbon (as well as associated with the reduced amount of other greenhouse gases, hazardous chemicals and environmental pollutants), include recycling of scrape and waste.
статья, добавлен 19.09.2024Carbon nanotube diodes as part of nanotechnology and a key component of the nanotechnology revolution, which could have major implications for the future. Nanotechnology is a discipline that deals with the design, production and manipulation of materials.
статья, добавлен 19.03.2024Mechanical tests of with various hydrogen concentrations before and after the hydride reorientation tests were performed. Hydrogen pickup measurements in zirconium alloys: relation to oxidation kinetics. Hydride microstructure in the dummy claddings.
статья, добавлен 30.05.2021