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Steel Making

Impact Tests
Impact tests are of considerable importance as an indication ...

MANGANESE is a metal much like iron. Its chemical symbol is M...

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

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

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

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

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

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

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

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

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

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

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

Testing And Inspection Of Heat Treatment
The hard parts of the gear must be so hard that a new mill f...

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

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

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

Pyrometers For Molten Metal


Pyrometers for molten metal are connected to portable thermocouples
as in Fig. 132. Usually the pyrometer is portable, as shown in
this case, which is a Brown. Other methods of mounting for this
kind of work arc shown in Figs. 133 and 134. The bent mountings
are designed for molten metal, such as brass or copper and are
supplied with either clay, graphite or carborundum tubes. Fifteen
feet of connecting wire is usually supplied.

The angle mountings, Fig. 134, are recommended for baths such as
lead or cyanide. The horizontal arm is usually about 14 in. long,
and the whole mounting is easily taken apart making replacements
very easy. Details of the thermo-couple shown in Fig. 132 are given
in Fig. 135. This is a straight rod with a protector for the hand
of the operator. The lag in such couples is less than one minute.
These are Englehard mountings.

Next: Protectors For Thermo-couples

Previous: An Automatic Temperature Control Pyrometer

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