单词 | thermite |
释义 | thermiten. A mixture of finely divided aluminium and oxide of iron or other metal, which produces on combustion a very high temperature (c 3000° C.) Invented by Mr. Claude Vauten of London; named subsequently by Dr. H. Goldschmidt of Essen.In form thermit a proprietary name. ΘΚΠ society > occupation and work > materials > fuel > chemical fuel > [noun] > consisting of active metals thermite1900 society > occupation and work > materials > derived or manufactured material > metal > other metallic materials > [noun] > mixture giving great heat when ignited thermite1900 the world > matter > chemistry > elements and compounds > metals > specific elements > aluminium > [noun] > compounds argil1530 alumine1788 alumina1790 aluminide1859 aluminium oxide1868 aluminum oxide1869 aluminium hydroxide1871 aluminum hydroxide1878 thermite1900 1900 Engin. Mag. 19 756/2 A mixture called ‘thermit’ consisting essentially of iron oxide and aluminium. 1901 Westm. Gaz. 2 May 4/2 The application of ‘thermite’, as the mixture has been named, to welding steel tubes and rails was illustrated. 1901 Nature 8 Aug. 362/1 To this mixture the name of ‘thermit’ has been given, and several varieties of it, adapted to various kinds of work, are used. 1906 Dundee Advertiser 26 June 10/1 The heat developed in the combustion of thermit,..which makes it possible to mend iron castings weighing tons. 1918 Nature 14 Nov. 217/2 Thermit, now an important munition of war, is in a class by itself. It is used for charging incendiary bombs and sometimes in a kind of shrapnel. 1971 B. Scharf Engin. & its Lang. xi. 115 The thermite is ignited and the hot metal allowed to flow into the mould, where it fills the gap between the two parts and forms a collar around them. 1973 R. Dentry Encounter at Kharmel xi. 198 The third explosion..set off thermite positioned under the big transceiver. Compounds C1. General attributive. thermite method n. ΚΠ 1929 Times 16 Jan. 12/4 The thermit method of welding has proved its worth in long-continued use. thermite reaction n. ΚΠ 1915 Chambers's Jrnl. July 558/1 The thermit reaction is used largely in the preparation of metals from their oxides. thermite shell n. ΚΠ 1923 R. Kipling Irish Guards in Great War I. 219 Oil-drums, gas and thermit shells were added to the regular allowances sent over. thermite weld n. ΚΠ 1927 Jrnl. Iron & Steel Inst. 115 909 The welding processes considered by the author are thermit welding, resistance welding..and metallic arc welding. 1980 Times 19 Feb. 3/3 There are at least 700 track welds, called thermit welds, similar to the one that failed. C2. thermite process n. the reduction of finely divided oxides of iron or other metals by means of an exothermic reaction with finely divided aluminium; also, thermite welding. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [noun] > chemical reactions or processes (named) > industrial processes > others Solvay (or Solvay's) process1879 contact process1903 thermite process1905 cyanamide process1922 Purex1951 society > occupation and work > industry > working with specific materials > working with metal > [noun] > refining > methods of calcinationc1386 calciningc1386 liquation1471 fulmination1617 cupelling1644 decrepitating1662 decrepitation1669 fulguration1676 concentration1689 cupellationa1691 scorification1755 affination1851 thermite process1905 zone melting1952 zone refining1952 zone levelling1953 society > occupation and work > industry > working with specific materials > working with metal > [noun] > welding > types of butt welding1878 lead burning1886 arc welding1890 thermite process1905 thermite welding1906 resistance welding1908 spot welding1908 seam welding1917 fusion welding1918 projection welding1918 stud welding1918 metal arc welding1926 pressure welding1926 metallic arc welding1927 flash-butt welding1933 flash welding1933 stitch welding1934 rightward welding1936 block welding1943 submerged-arc welding1945 friction welding1946 T.I.G.1960 microwelding1962 1905 Chambers's Jrnl. Dec. 78/2 A perfectly successful joint..has been made by utilising the thermite process. 1910 C. H. Desch Metallogr. vi. 109 The great reducing power of aluminium at high temperatures has been utilized in what is known as the Thermit process to produce metals and alloys free from carbon. 1930 Engineering 14 Mar. 349/2 The Thermit process, the oxy-acetylene and similar blowpipes,..have all attained to a usefulness and convenience applicable..to single jobs. 1958 Chambers's Techn. Dict. 955/1 Aluminothermic process..also known as the thermite process, is used especially for the oxides of metals which are reduced with difficulty. 1980 Daily Tel. 19 Feb. 6/8 British Rail uses two main welding techniques. One, the thermit process used along the Bushey track, involves welding long stretches of rail together at the site. thermite welding n. fusion welding in which the heat and the weld metal are produced by the thermite process. ΘΚΠ society > occupation and work > industry > working with specific materials > working with metal > [noun] > welding > types of butt welding1878 lead burning1886 arc welding1890 thermite process1905 thermite welding1906 resistance welding1908 spot welding1908 seam welding1917 fusion welding1918 projection welding1918 stud welding1918 metal arc welding1926 pressure welding1926 metallic arc welding1927 flash-butt welding1933 flash welding1933 stitch welding1934 rightward welding1936 block welding1943 submerged-arc welding1945 friction welding1946 T.I.G.1960 microwelding1962 1906 Jrnl. Iron & Steel Inst. i. 452 Experiments with electric and thermite welding for tramway rails. 1952 E. Fuchs & H. Bradley Welding Pract. II. ii. 39 It must be remembered that Thermit welding can only be carried out successfully by specially trained and experienced personnel. This entry has not yet been fully updated (first published 1912; most recently modified version published online March 2022). < |
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