Презентация на тему Steel production

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2. Steel productionSteel production is an important step
3. methods for the melting of steelbasic oxygen processopen-hearth processelectric-furnace process
4. Pouring is a critical step in steel production
5. basic oxygen process The furnaces used in
6. open-hearth process The use of oxygen, natural
7. The second half of the 20th century
8. A development in steel production of great
9. The mid-1960’s witnessed the beginning of an intensive development of electrometallurgical processesArc furnacesInduction furnaces
10. With regard to pouring, there has been
11. The tendency in steel production, as in
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Steel productionSteel production is an important step in the overall production cycle of ferrous metallurgy, the others being the production of pig iron in blast furnaces and the rolling of steel ingots and semifinished shapes. The

Steel Production Sogreev Alex Svetlana TsaregorodtsevaMOSCOW STATE UNIVERSITY OF MECHANICAL ENGINEERING (MAMI) UNIVERSITY OF MECHANICAL ENGINEERING

methods for the melting of steelbasic oxygen processopen-hearth processelectric-furnace process

Pouring is a critical step in steel production

basic oxygen process The furnaces used in the basic oxygen process usually

$open-hearth process The use of oxygen, natural gas, and high-quality refractories permits$ The second half of the 20th century has seen a marked development

The second half of the 20th century has seen a marked development

A development in steel production of great promise is the improvement of

The mid-1960’s witnessed the beginning of an intensive development of electrometallurgical processesArc furnacesInduction furnaces

With regard to pouring, there has been an uninterrupted increase in the

The tendency in steel production, as in ferrous metallurgy as a whole,

Слайды презентации

Слайд 2 Steel production
Steel production is an important step in

Steel productionSteel production is an important step in the overall production

the overall production cycle of ferrous metallurgy, the others

being the production of pig iron in blast furnaces and the rolling of steel ingots and semifinished shapes. The two main technological processes in steel production are melting and pouring.

Слайд 3 methods for the melting of steel
basic oxygen process

open-hearth

process

electric-furnace process

Слайд 4 Pouring is a critical step in steel production

Слайд 5 basic oxygen process
The furnaces used in the basic

basic oxygen process The furnaces used in the basic oxygen process

oxygen process usually have a capacity of 100–350 tons.

The range of steel types obtained by this method is increasing continuously, and the quality of alloy steel produced through the basic oxygen process is on a par with that produced through the open-hearth process and electric steel of the same grade.

Слайд 6 open-hearth process
The use of oxygen, natural gas, and

$open-hearth process The use of oxygen, natural gas, and high-quality refractories$

high-quality refractories permits a significant rise in the process’s

productivity. However, new open-hearth furnaces are no longer being produced, and what now appears promising is a conversion of existing furnaces into two-bath furnaces.

Слайд 7 The second half of the 20th century has

The second half of the 20th century has seen a marked

seen a marked development of steel production employing electric

furnaces, a development encouraged by the numerous advantages of the electric-furnace process over other methods of steel production. Work is under way on constructing furnaces with 500–600-ton capacities using six electrodes. An important tendency in the electric-furnace production process is the considerable increase in the power per ton of the furnaces, from 250–300 to 500–600 kilovolt-amperes per ton and more.

Слайд 8 A development in steel production of great promise

A development in steel production of great promise is the improvement

is the improvement of steel quality through refining processes

carried out outside the furnace. The processes with the greatest industrial importance include bubbling inert gases or oxidizing mixtures through the metal in the ladle or in a special apparatus, vacuum processing, and treating the steel with synthetic slags.

Слайд 9 The mid-1960’s witnessed the beginning of an intensive

development of electrometallurgical processes
Arc furnaces

Induction furnaces

Слайд 10 With regard to pouring, there has been an

With regard to pouring, there has been an uninterrupted increase in

uninterrupted increase in the percentage of metal produced through

continuous casting, and by the mid-1970’s there were more than 500 continuous casting machines in operation. The curved-mold type of continuous casting machine is the most common.

Слайд 11 The tendency in steel production, as in ferrous

The tendency in steel production, as in ferrous metallurgy as a

metallurgy as a whole, is toward concentration of production

and a greater use of continuous production processes. There is also a tendency for individual enterprises to specialize. These developments serve to lower unit costs, improve the quality of the steel, advance the degree of mechanization and automation of the entire metallurgical process, and facilitate the introduction of computers and automatic control systems. Work in progress in a number of countries on developing a continuous steelmaking process and production units for this process holds great promise for steelmaking.