1、附录 A 外文翻译 原文部分 Aluminum alloy processing Aluminum alloy market research The aluminum strap is our country national economy development important basis material, widely applies in professions and so on aviation, astronautics, building, printing, transportation, electron, chemical industry, food, medi
2、cine. In recent years, under the economical fast developments impetus, our country aluminum straps investment elevated temperature unceasingly, the aluminum strap consumption quantity continued maintains the stable growth. Profession and so on outer wall construction and interior decoration, aluminu
3、m foil manufacture, printing, PS version, manufacturing industry, electrical appliances, food packing demands further enhance, become the prime motors which the aluminum strap consumption quantity grows, simultaneously, the transportation shipping industry is becoming the new expense point of growth
4、. Along with the economical development and consumption levels enhancement, the aluminum sheet, the belt, the foil consumption quantity assumes the trend of escalation. Our country aluminum material expense peak after 2005 arrives, and achieves the peak in 2012, the year demand surpasses 10,000,000
5、tons. But the present our country aluminum sheet strip consumption quantity, average per person expends the world average level 1/2, the board strip expense is the developed country 1/10-1/34, high accuracy aluminum sheet strip dependence import solution. Moreover the import volume large scale is gr
6、owing every year, expends the growth movement to be obvious, therefore the market prospect favors. The effects of alloying elements The properties and characteristics of aluminum, such as density, conductivity, corrosion resistance, finish, mechanical properties, and thermal expansion, are modified
7、by the addition of alloying elements. The resulting effect depends upon the principal alloying elements used, as detailed in the table below. Wrought Alloy Designation Major Alloying Elements and Typical Alloy Characteristics 1xxx Series Minimum 99% aluminum High corrosion resistance. Excellent fini
8、shability. Easily joined by all methods. Low strength. Poor machinability. Excellent workability. High electrical and thermal conductivity. 2xxx Series Copper High strength. Relatively low corrosion resistance. Excellent machinability. Heat treatable. 3xxx Series Manganese Low to medium strength. Go
9、od corrosion resistance. Poor machinability. Good workability. 4xxx Series Silicon Not available as extruded products. 5xxx Series Magnesium Low to moderate strength. Excellent marine corrosion resistance. Very good weldability. 6xxx Series Magnesium & Silicon Most popular extrusion alloy class. Goo
10、d extrudability. Good strength. Good corrosion resistance. Good machinability. Good weldability. Good formability. Heat treatable. 7xxx Series Zinc Very high strength. Good machinability. Heat treatable. Processing Plastic processing methods will billet aluminum ingot processing to become useful, th
11、e primary means of a rolling, extrusion, and forging such as stretching. Aluminum Fabrication in the early 20th century began to form industrial production, 30 years ago, basically used copper production equipment, products mainly used in aircraft manufacturing. After the 1960s, aluminum production
12、has developed rapidly, the annual growth of about 4 to 8 percent, products widely used in aviation, construction, transport, electrical, chemical, packaging and industrial sectors such as daily necessities. Second only to iron and steel output, ranking second in the metal materials. China in the mid
13、-1950s into the larger aluminum processing plants, formed a production system, products have been serialized, there are seven varieties of alloy, produces sheet, strip, foil materials, pipe, bar, sections, wire rod and Forging (free forgings, forging pieces of) eight categories of products. Aluminum
14、 and aluminum alloy plastic processing, and should ensure that products meet stability requirements for consistent dimensional accuracy, mechanical properties and good surface quality. We must pay attention to mechanical damage and corrosion prevention and control grain size and organizational struc
15、ture. These requirements depend largely on the quality of production technology and equipment to ensure that. Aluminum alloy and plastic generally has a better, easier to plastic processing. Al hardware components of the more complex, there is a low melting and metal compounds and other intergovernm
16、ental organizations brittle, and its plastic processing of some of the features: a uniform treatment such as the elimination of billet spindle cooling, the internal stress within the crystal and segregation； blank tablet Milling to the surface to remove the low melting of the surface of segregation.
17、 Some aluminum to improve corrosion resistance and to carry out the processing of Baolv. Aluminum is overheating sensitivity, we must strictly control the temperature. Looking from the market demand what the amount used are most is the aluminum foil semifinished materials and the aluminum system pot
18、 material. Therefore the positive coal group plans product in the near future for hot rolling aluminum volume semifinished product, aluminum plate, decoration aluminum sheet, PS version base, forward for aluminum system pot material. The aluminum system pot material is this plan goal product. initia
19、lly enters the aluminum processing according to the investigation and study situation and the expert opinion as well as the positive coal group the actual situation, plans to use casts rolls over + the cold rolling technology craft to produce the aluminum strap. casts rolls over + the cold rolling t
20、echnology craft production aluminum strap is sends in unceasingly continually through the continuous casting rolling mill the aluminum liquid in the revolving roller, simultaneously completes the cooling coagulation and the rolling distorts two process production aluminum tube blank volume, again af
21、ter working procedure production strap products and so on cold rolling, finishing, cutting. In domestic and foreign is one item very mature and the popular vanguard technology. The hot rolling + cold rolling craft way main technological process is the board spindles casting, the hot rough rolling production aluminum tube blank volume adds the cold rolling.
