20 йил сонли мажлис баенномаси билан тасдикланган Каф мудири М. Б. Ганиханова


Steel is unique in its ability to exist as a soft ductile



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Steel is unique in its ability to exist as a soft ductile material that can easily be

formed or machined and then, as a result of a heat treatment, assume the role of a



hard, tough material that resists changing shape. There are two reasons for this

behavior. The first is the fact that iron undergoes an allotropic change at 1330°F.



Carbon has little solubility in the body-centered cubic lattice that is characteristic of iron at room temperature, but up to 2 percent carbon is soluble in the face centered cubic lattice which is stable above 1330°F.

ВАРИАНТ 12




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Install страховать

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Crankshaft

Crash

Cut off


Damper

Danger


Deformation

Dynamics


Electric motor

Electric welding



Diesel
Corrosion resistance. Cast irons will corrode readily under atmospheric

conditions. This corrosion, however, forms a protective surface that offers resistance to firther atmospheric corrosion as well as soil corrosion. Widespread use of cast iron for water-main and soil pipe is a good indication of its generally favorable corrosion resistance. Gray-cast-iron water mains and gas lines have been in service in some areas for more than 100 years
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