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Steel Making

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

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

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

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

Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

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

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

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

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

Conclusions
Martien was probably never a serious contender for the honor ...

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

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

Piston Pin
The piston pin on an aviation engine must possess maximum res...

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



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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