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   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

Care In Annealing
Not only will benefits in machining be found by careful anne...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

Annealing Work
With the exception of several of the higher types of alloy s...

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Hardness Testing
The word hardness is used to express various properties of me...

Crucible Steel
Crucible steel is still made by melting material in a clay or...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...



Manganese






Category: COMPOSITION AND PROPERTIES OF STEEL

MANGANESE is a metal much like iron. Its chemical symbol is Mn. It
is somewhat more active than iron in many chemical changes--notably
it has what is apparently a stronger attraction for oxygen and
sulphur than has iron. Therefore the metal is used (especially in
the so-called basic process) to free the molten steel of oxygen,
acting in a manner similar to silicon, as explained above. The
compound of manganese and oxygen is readily eliminated from the
metal. Sufficient excess of elemental manganese should remain so
that the purchaser may be sure that the iron has been properly
deoxidized, and to render harmless the traces of sulphur present.
No damage is done by the presence of a little manganese in steel,
quite the reverse. Consequently it is common to find steels containing
from 0.3 to 1.5 per cent.





Next: Alloying Elements

Previous: Silicon



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