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Steel Making

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

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

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

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

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

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

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

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

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

Hardening
Steel is hardened by quenching from above the upper critical....

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

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

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

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

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

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...



Pyrometers For Molten Metal






Category: PYROMETRY AND PYROMETERS

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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