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41 сопротивление растрескиванию под действием озона
Plastics: ozone cracking resistanceУниверсальный русско-английский словарь > сопротивление растрескиванию под действием озона
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42 стойкость к озонному растрескиванию
Engineering: resistance to ozone crackingУниверсальный русско-английский словарь > стойкость к озонному растрескиванию
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43 стойкость к растрескиванию под действием изгиба
Polymers: flex cracking resistanceУниверсальный русско-английский словарь > стойкость к растрескиванию под действием изгиба
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44 стойкость к растрескиванию под действием напряжения окружающей среды
Polymers: environmental stress-cracking resistanceУниверсальный русско-английский словарь > стойкость к растрескиванию под действием напряжения окружающей среды
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45 трещиностойкость сталей с покрытием
Универсальный русско-английский словарь > трещиностойкость сталей с покрытием
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46 Biegerissfestigkeit
f <qualit.mat> ■ flexural-cracking resistance -
47 Laugenrissbeständigkeit
f <qualit.mat> ■ resistance to caustic crackingGerman-english technical dictionary > Laugenrissbeständigkeit
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48 скудный
Скудный-- Published data relating to the resistance of retaining ring type alloys to environmental cracking are meager.Русско-английский научно-технический словарь переводчика > скудный
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49 Haarrissfestigkeit
Haarrissfestigkeit f hair cracking resistanceDeutsch-Englisch Fachwörterbuch Architektur und Bauwesen > Haarrissfestigkeit
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50 slag
I 〈de〉1 [klap] blow ⇒ 〈 vuistslag ook〉 punch 〈 voornamelijk met betrekking tot boksen〉, 〈 met zweep ook〉 lash2 [ramp, schok] blow4 [leger] battle6 [golvende beweging] wave8 [handigheid] knack9 [kaartspel] trick10 [damspel] take, capture♦voorbeelden:1 een harde slag • a hard/heavy blowiemand een (zware) slag toebrengen • deal someone a heavy blowzonder slag of stoot • 〈 figuurlijk〉 without a struggle/any resistance8 de slag van iets te pakken krijgen • get the knack/hang of something¶ met de Franse slag iets doen • do something in a slapdash manner, give something a lick and a promiseeen slag naar iets slaan • have a shot/stab at somethingeen goede slag slaan • make a good dealaan de slag gaan • get to work, get going/crackinger zit een slag in mijn wiel • my wheel is buckledeen slag om de arm houden • refuse to commit oneself, keep one's options openhij was op slag dood • he was killed instantlyII 〈 het〉♦voorbeelden:iemand van jouw slag • someone like you -
51 Adamson, Daniel
SUBJECT AREA: Mechanical, pneumatic and hydraulic engineering, Metallurgy, Steam and internal combustion engines[br]b. 1818 Shildon, Co. Durham, Englandd. January 1890 Didsbury, Manchester, England[br]English mechanical engineer, pioneer in the use of steel for boilers, which enabled higher pressures to be introduced; pioneer in the use of triple-and quadruple-expansion mill engines.[br]Adamson was apprenticed between 1835 and 1841 to Timothy Hackworth, then Locomotive Superintendent on the Stockton \& Darlington Railway. After this he was appointed Draughtsman, then Superintendent Engineer, at that railway's locomotive works until in 1847 he became Manager of Shildon Works. In 1850 he resigned and moved to act as General Manager of Heaton Foundry, Stockport. In the following year he commenced business on his own at Newton Moor Iron Works near Manchester, where he built up his business as an iron-founder and boilermaker. By 1872 this works had become too small and he moved to a 4 acre (1.6 hectare) site at Hyde Junction, Dukinfield. There he employed 600 men making steel boilers, heavy machinery including mill engines fitted with the American Wheelock valve gear, hydraulic plant and general millwrighting. His success was based on his early recognition of the importance of using high-pressure steam and steel instead of wrought iron. In 1852 he patented his type of flanged seam for the firetubes of Lancashire boilers, which prevented these tubes cracking through expansion. In 1862 he patented the fabrication of boilers by drilling rivet holes instead of punching them and also by drilling the holes through two plates held together in their assembly positions. He had started to use steel for some boilers he made for railway locomotives in 1857, and in 1860, only four years after Bessemer's patent, he built six mill engine boilers from steel for Platt Bros, Oldham. He solved the problems of using this new material, and by his death had made c.2,800 steel boilers with pressures up to 250 psi (17.6 kg/cm2).He was a pioneer in the general introduction of steel and in 1863–4 was a partner in establishing the Yorkshire Iron and Steel Works at Penistone. This was the first works to depend entirely upon Bessemer steel for engineering purposes and was later sold at a large profit to Charles Cammell \& Co., Sheffield. When he started this works, he also patented improvements both to the Bessemer converters and to the engines which provided their blast. In 1870 he helped to turn Lincolnshire into an important ironmaking area by erecting the North Lincolnshire Ironworks. He was also a shareholder in ironworks in South Wales and Cumberland.He contributed to the development of the stationary steam engine, for as early as 1855 he built one to run with a pressure of 150 psi (10.5 kg/cm) that worked quite satisfactorily. He reheated the steam between the cylinders of compound engines and then in 1861–2 patented a triple-expansion engine, followed in 1873 by a quadruple-expansion one to further economize steam. In 1858 he developed improved machinery for testing tensile strength and compressive resistance of materials, and in the same year patents for hydraulic lifting jacks and riveting machines were obtained.He was a founding member of the Iron and Steel Institute and became its President in 1888 when it visited Manchester. The previous year he had been President of the Institution of Civil Engineers when he was presented with the Bessemer Gold Medal. He was a constant contributor at the meetings of these associations as well as those of the Institution of Mechanical Engineers. He did not live to see the opening of one of his final achievements, the Manchester Ship Canal. He was the one man who, by his indomitable energy and skill at public speaking, roused the enthusiasm of the people in Manchester for this project and he made it a really practical proposition in the face of strong opposition.[br]Principal Honours and DistinctionsPresident, Institution of Civil Engineers 1887.President, Iron and Steel Institute 1888. Institution of Civil Engineers Bessemer Gold Medal 1887.Further ReadingObituary, Engineer 69:56.Obituary, Engineering 49:66–8.Obituary, Proceedings of the Institution of Civil Engineers 100:374–8.H.W.Dickinson, 1938, A Short History of the Steam Engine, Cambridge University Press (provides an illustration of Adamson's flanged seam for boilers).R.L.Hills, 1989, Power from Steam. A History of the Stationary Steam Engine, Cambridge University Press (covers the development of the triple-expansion engine).RLH -
52 Chevenard, Pierre Antoine Jean Sylvestre
SUBJECT AREA: Metallurgy[br]b. 31 December 1888 Thizy, Rhône, Franced. 15 August 1960 Fontenoy-aux-Roses, France[br]French metallurgist, inventor of the alloys Elinvar and Platinite and of the method of strengthening nickel-chromium alloys by a precipitate ofNi3Al which provided the basis of all later super-alloy development.[br]Soon after graduating from the Ecole des Mines at St-Etienne in 1910, Chevenard joined the Société de Commentry Fourchambault et Decazeville at their steelworks at Imphy, where he remained for the whole of his career. Imphy had for some years specialized in the production of nickel steels. From this venture emerged the first austenitic nickel-chromium steel, containing 6 per cent chromium and 22–4 per cent nickel and produced commercially in 1895. Most of the alloys required by Guillaume in his search for the low-expansion alloy Invar were made at Imphy. At the Imphy Research Laboratory, established in 1911, Chevenard conducted research into the development of specialized nickel-based alloys. His first success followed from an observation that some of the ferro-nickels were free from the low-temperature brittleness exhibited by conventional steels. To satisfy the technical requirements of Georges Claude, the French cryogenic pioneer, Chevenard was then able in 1912 to develop an alloy containing 55–60 per cent nickel, 1–3 per cent manganese and 0.2–0.4 per cent carbon. This was ductile down to −190°C, at which temperature carbon steel was very brittle.By 1916 Elinvar, a nickel-iron-chromium alloy with an elastic modulus that did not vary appreciably with changes in ambient temperature, had been identified. This found extensive use in horology and instrument manufacture, and even for the production of high-quality tuning forks. Another very popular alloy was Platinite, which had the same coefficient of thermal expansion as platinum and soda glass. It was used in considerable quantities by incandescent-lamp manufacturers for lead-in wires. Other materials developed by Chevenard at this stage to satisfy the requirements of the electrical industry included resistance alloys, base-metal thermocouple combinations, magnetically soft high-permeability alloys, and nickel-aluminium permanent magnet steels of very high coercivity which greatly improved the power and reliability of car magnetos. Thermostatic bimetals of all varieties soon became an important branch of manufacture at Imphy.During the remainder of his career at Imphy, Chevenard brilliantly elaborated the work on nickel-chromium-tungsten alloys to make stronger pressure vessels for the Haber and other chemical processes. Another famous alloy that he developed, ATV, contained 35 per cent nickel and 11 per cent chromium and was free from the problem of stress-induced cracking in steam that had hitherto inhibited the development of high-power steam turbines. Between 1912 and 1917, Chevenard recognized the harmful effects of traces of carbon on this type of alloy, and in the immediate postwar years he found efficient methods of scavenging the residual carbon by controlled additions of reactive metals. This led to the development of a range of stabilized austenitic stainless steels which were free from the problems of intercrystalline corrosion and weld decay that then caused so much difficulty to the manufacturers of chemical plant.Chevenard soon concluded that only the nickel-chromium system could provide a satisfactory basis for the subsequent development of high-temperature alloys. The first published reference to the strengthening of such materials by additions of aluminium and/or titanium occurs in his UK patent of 1929. This strengthening approach was adopted in the later wartime development in Britain of the Nimonic series of alloys, all of which depended for their high-temperature strength upon the precipitated compound Ni3Al.In 1936 he was studying the effect of what is now known as "thermal fatigue", which contributes to the eventual failure of both gas and steam turbines. He then published details of equipment for assessing the susceptibility of nickel-chromium alloys to this type of breakdown by a process of repeated quenching. Around this time he began to make systematic use of the thermo-gravimetrie balance for high-temperature oxidation studies.[br]Principal Honours and DistinctionsPresident, Société de Physique. Commandeur de la Légion d'honneur.Bibliography1929, Analyse dilatométrique des matériaux, with a preface be C.E.Guillaume, Paris: Dunod (still regarded as the definitive work on this subject).The Dictionary of Scientific Biography lists around thirty of his more important publications between 1914 and 1943.Further Reading"Chevenard, a great French metallurgist", 1960, Acier Fins (Spec.) 36:92–100.L.Valluz, 1961, "Notice sur les travaux de Pierre Chevenard, 1888–1960", Paris: Institut de France, Académie des Sciences.ASDBiographical history of technology > Chevenard, Pierre Antoine Jean Sylvestre
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53 Risswiderstand
mcracking resistance
См. также в других словарях:
cracking resistance — Смотри Трещиностойкость … Энциклопедический словарь по металлургии
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