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

Steel Making

Corrosion
This steel like any other steel when distorted by cold worki...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

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

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

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

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

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

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

Crankshaft
The crankshaft was the most highly stressed part of the entir...

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

Manganese
Manganese adds considerably to the tensile strength of steel,...

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...



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.





Next: Silicon

Previous: Sulphur



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