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

Steel Making

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

The Forging Of Steel
So much depends upon the forging of steel that this operation...

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

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

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

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

Quenching
It is considered good practice to quench alloy steels from th...

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

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



Phosphorus






Category: COMPOSITION AND PROPERTIES OF STEEL

PHOSPHORUS is an element (symbol P) which enters the metal from
the ore. It remains in the steel when made by the so-called acid
process, but it can be easily eliminated down to 0.06 per cent
in the basic process. In fact the discovery of the basic process
was necessary before the huge iron deposits of Belgium and the
Franco-German border could be used. These ores contain several
per cent phosphorus, and made a very brittle steel (cold short)
until basic furnaces were used. Basic furnaces allow the formation
of a slag high in lime, which takes practically all the phosphorus
out of the metal. Not only is the resulting metal usable, but the
slag makes a very excellent fertilizer, and is in good demand.





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