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Steel Making

Hardening
The forgings can be hardened by cooling in still air or quen...

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

Critical Points
One of the most important means of investigating the properti...

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

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

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

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

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...



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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Previous: Sulphur




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