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Steel Making

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

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

Hardness Testing
The word hardness is used to express various properties of me...

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

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

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

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

The Forging Of Steel
So much depends upon the forging of steel that this operation...

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

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

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

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

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

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

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

Alloying Elements
Commercial steels of even the simplest types are therefore p...

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

The Modern Hardening Room
A hardening room of today means a very different place from ...



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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