7.In the oxygen steelmaking processes, clean air is blown under pressure through, onto, or over a bath containing hot metal, steel scrap, and fluxes to produce steel. ( )
3.The molten iron is delivered to a series of refractory-lined hot metal cars for transportation to the steel plant.( )
4.The stove consists of several parts: the shell, the combustion chamber, the checker work, and control valves and lines that regulate and deliver the various gasses.( )
9.The electrodes melt the portion of the charge directly underneath and around them, and continue to bore through the metallic charge, forming a pool of molten metal on the hearth. ( )
fatigue strength
corrosion-resisting steel
electro-refining
electrolytic cell
Ⅲ. Fill in the blanks with the words. (10 points)
1.As early as 3,000 years ago,was serving as a basis of human culture and civilization.
(C) the cast-iron plow
(D) Charles Newbold s fortune
5.In melter gasifiers processes，the COREX process which are developed together by the Voest Alpine and German Korf has gone into production. ( )
6.Fluorspar is basically silicon fluoride with varying impurities, and sometimes contains lead. ( )
8.During tapping, thebath should have a temperature of 1,600 to1650℃.
9.The ladle is usually held by a teemingduring tapping to minimize exposure of the steam to air and minimize erosion of ladle refractory.
Test Paper (1)
Ⅰ.Translate the following expressions into English. (15 points)
钢铁工业
炉外精炼
烧结矿
炼铁原料
高炉车间
渣池
天然气
回转窑
废钢
转炉工艺
试样分析
不锈钢
普碳钢
感应炉
机械性能
Ⅱ. Translate the following expressions into Chinese. (15 points)
Passage 1
The agricultural revolution in the nineteenth century involved two things: the invention of labor-saving machinery and the development of scientific agriculture. Labor-saving machinery naturally appeared first where labor was scarce. "InEurope, said Thomas Jefferson, "the object is to make the most of their land, labor being abundant: here it is to make the most of our labor, land being abundant. It was in theUnited States, therefore, that the great advances in nineteenth-century agricultural machinery first came.
At the opening of the century, with the exception of a crude plow, farmers could have carried practically all of the existing agricultural implements on their backs; by 1860, most of the machinery in use today had been designed in an early form. The most important of the early inventions was the iron plow. As early as 1790 Charles Newbold ofNew Jerseyhad been working on the idea of a cast-iron plow and spent his entire fortune in introducing his invention. The farmers, however, were not interested in it, claiming that the iron poisoned the soil and made the weeds grow. Nevertheless, many people devoted their attention to the plow, until in 1869 James Oliver ofSouth Bend,Indiana, turned out the first chilled-steel plow.
(B) raise the price of
(C) exaggerate the worth of
(D) earn a living on
4. The word "it" in line 12 refers to
(A) scientific agriculture
(B) James Oliver s invention
4.Molten iron and slag produced in the blast furnace are removed and separated in the.
5.Normal operation utilizes three stoves such that one is always on, while the other two are on gas.
(A) unsurprisingly
(B) gradually
(C) apparently
(D) safely
3. The expression "make the most of" in line 4 is closest in meaning to
(A) get the best yield from
blast furnace
wrought iron
hematite
combustion chamber
direct reduction process
dressing plant
slag former
tramp element
tapping hole
die steel
continuous-casting system
6.The main components of the Midrex processes are the shaft furnace, the gas, and the cooling-gas system.
7.Manganese oxides can lower thepoint of basic slag and accelerate slag formation.
8.The combination of devices for top blowing of oxygen, including the lance, a standby lance, and lifting and transfer mechanisms, is rather complicated structure. ( )
Ⅳ.Decide whether the following statements are true or he first Bessemer converter was lined with carbon bricks. ( )
2.If the gangue contains mainly lime, the ore is “acid”; if silicon acid (SiO2) predominates, the ore is “basic”. ( )
(C) Machinery that contributed to the agricultural revolution