| 单词 | oxygen lance |
| 释义 | > as lemmasoxygen lance 8. In full, oxygen lance. extracted from lancen.1 a. A thin metal pipe through which oxygen under pressure may be passed in order to burn away metal, concrete, or the like using heat generated by the burning of either the metal to be cut or the pipe itself. ΘΚΠ society > occupation and work > equipment > cutting tool > other types of cutting equipment > [noun] > gas or plasma cutters oxygen lance1925 plasma arc1958 plasma torch1959 thermic lance1970 1925 Iron Trade Rev. 24 Sept. 749/1 The oxygen lance is a means of burning a hole quickly through steel, slag or brick. Essentially it is nothing but a stream of pure oxygen flowing through a small iron pipe. If the oxygen strikes hot iron or steel, the metal burns rapidly... If the oxygen strikes non-metallic substances, like firebrick or slag, the lance pipe itself burns, produces the necessary heat and flux to melt the way through. 1926 Blast Furnace & Steel Plant XIV. 19/1 If a layer of slag is encountered, the lance pipe itself burns. 1944 Blast Furnace & Steel Plant XXXII. 1077/1 The oxygen lance..has been used..for opening tap holes in blast furnaces and open-hearth furnaces, for tapping slag from soaking pits, for cutting up spills and skulls, and for..piercing or severing..heavy masses of iron and steel. 1945 Machinery (N.Y.) Nov. 156/1 Since the oxygen lance can sever metal of practically any thickness, it is an effective ‘trouble-shooter’ for metal-disposal problems. b. A metal pipe, often water-cooled, through which oxygen under pressure may be injected into molten metal or directed on to its surface. ΘΚΠ society > occupation and work > equipment > metalworking equipment > [noun] > for injecting oxygen lance1948 1948 Jrnl. Iron & Steel Inst. 160 221/1 Oxygen can be used in the basic electric-arc furnace for decarburization, either by means of the ‘oxygen lance’ or by direction of a strong blast of the gas through the slag cover. 1950 Jrnl. Iron & Steel Inst. 165 411/1 The use of the oxygen lance for refining a high-chromium steel..enables the heat to be worked at a temperature some 200°C higher than normal. 1959 New Scientist 30 Apr. 965/2 Oxygen for the refining action is injected into the through metal water-cooled jets or ‘lances’. 1971 Engineering Index 1970 3426/2 Effect of blowing practices in the LD converter on oxygen content of steel... Statistical methods were employed to study this influence, with particular reference to the effect of..the height of the lance on the bath. oxygen lance Categories » oxygen lance n. see lance n.1 8. < as lemmas |
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