International Ecological Forum “Environment for Ukraine 2014” ... Center in Kiev. Deputy minister – Chief of Staff Alexander Nastasenko, the Chairman of State Environmental ... Michael Kazimir, Principal of State Ecological Academy Alexander Bondar and other senior government officials participated in ... The Forum is supported by Cabinet of Ministers of Ukraine and Ministry of Environment & Mineral Resources of ... Mineral Resources of Ukraine the sixth year in a raw. And Dneprospetsstal participates in the Forum each of ... Exhibition extends the ecological subject-matter year in and year out. Besides, the Forum as usual provided a rather ... scientists, representatives of the official institutions and business. Here you can find some of the subjects: ... “Geological investigations in Ukraine: actual state and perspectives”, “Ecological audit, ecological ... expertise, environmental effect evaluation: the present and prospects of the development”, “Strategic ... “Strategic partnership of public, state and business sectors in purpose of sustainable development”.
As ... by the biggest Ukrainian companies’ representatives and there is an opportunity to discuss topical questions ... Revised document: 30.04.2014
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Stainless Steel ... and forgings of as-annealed corrosion resistant steel ... working in aggressive medium.
Employing of annealed and corrosion resistant steel in machine building allows ... in machine building allows reducing power consumption and labour content during part production.
Recently ... application of low-carbon, corrosion resistant steel and alloys in chemical, cryogenic, food and light industries has been observed that results from ... well as for pipelines working in contact with nitric acid and ammonium nitrate. The steel is intended for production ... for production of main units of equipment for carbamide and caprolactone synthesis working in boiling phosphoric ... conditions, e.g. yacht sport, aviation, chemical and food industry.
Regardless of a relatively small ... development of such industries as airspace, petrol and chemical, food, medical industries depends on stainless ... railway car building, motor industry, airspace, petrol and chemical, medical food, industries (as well as in ... atomic machine building, power machine building, designing and styling, shipbuilding, at overhaul plants.
Corrosion ... Revised document: 15.04.2014
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Heat-Resistant Steels and Alloys ... and heat-resistant steels are used in production of different ... The most high-temperature alloys are silicochromes and chromium-nickel steels used in production of inlet ... used in production of inlet valves for piston engines and gas turbine blades for jet engines.
... Revised document: 15.04.2014
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High-Speed Steel & PM ... significant increase in consumption of special steels and alloys which cutting and shaping involve considerable difficulties. Nowadays ... of steel to retain high hardness, toughness and wear resistance at elevated temperatures.
It is ... is known that tools warm up during cutting and the higher speed of cutting and hardness of processed material, the higher temperature ... hardness for these steels as they can be easily oxidized and decarburized by heat treatment.
Heat treatment of ... is an even more difficult process. To prevent oxidizing and decarburizing of steel at the tool quenching temperature ... Revised document: 15.04.2014
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Structural Steel ... by reduced content of impurities, carbon, silicon and manganese comparing to commercial grades.
Quality ... structural steel is delivered in the form of forgings and rolled stock for further heat treatment, it shows ... for further heat treatment, it shows low hardenability and usually used for production of welded structures and ... are characterized by low carbon content (up to 0.6%) and comparatively low content of alloying elements (up ... steel, chromium-silicon-nickel steel with copper) and for reinforcement of ferroconcrete constructions (silico-manganese ... constructions (silico-manganese steel with zirconium, and silicon steel). Low-alloy steels show higher ... loads.
High-strength alloy steels serve in transport and basic engineering industry, automotive industry for ... grades is:
shafts, spindles, gear-wheels and other parts that shall have enhanced hardness, ... that shall have enhanced hardness, wear resistance and toughness, as well as those which work under impact ... disks, shafts, gear-wheels, bearing bushes, cranks and other parts requiring enhanced toughness and wear resistance;
axles, flanges, fingers, forks, ... Revised document: 15.04.2014
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Tool Steel & PM ... a group of steel grades that have high hardness, toughness and wear resistance resulted from appropriate heat treatment. ... as follows:
steels for measuring tools, low-alloy and carbon steels;
steels for cutting tools, (high-speed ... deformation, non-heat-resistant steels of hypereutectoid and ledeburite classes;
die steels for hot deformation, ... heat-resistant steels of hypoeutectoid, eutectoid and hypereutectoid classes.
Carbon tool steel
Carbon ... in 1/10-percent increments. These steels can be quality and high quality ones (with letter "A" at ... to overheating resulted from absence of alloying elements and owing to this fact they have à very narrow range for ... main disadvantage of such steels is low hardenability and the tendency to overheating. Carbon tool steel ... hardenability, wear resistance, impact strength, toughness and does not tend to overheat.
Silicon containing ... steel shows significant decarburization during annealing and it is difficult to obtain required hardness of ... of simple shape for processing non-metallic, non-ferrous and easily workable materials.
Steel grades ÕÃ and Õ have a great number of carbides increasing tool ... Revised document: 15.04.2014
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Bearing Steel ... the great part of machines and devices (e.g., machine-tools, cars, railway cars, ... properties depend significantly on precision, durability and reliability of bearings.
Parts produced of bearing ... are balls, rollers, bearing rings, forcing valves, pushing and other parts requiring high hardness, wear resistance, ... bearings that serve in normal conditions are made of ØÕ15 and ØÕ15ÑÃ steel grades.
Microstructure, non-metallic ... grades.
Microstructure, non-metallic inclusions, hardness and decarburization depth are controlled strictly for ... of ball surface crushing under load, bearings warm up and fail.
Hot rolled steel is usually used in ring manufacture.
Structure ... is heated over 800°C, fine carbide grains dissolve and coarse grains remain. During further slow cooling ... steel can be increased by adding 0.40-0.65% of silicon and 0.9-1.2% of manganese.
Carbide network or its remains ... Revised document: 15.04.2014
