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Steel Making

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

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

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

Tungsten, as an alloy in steel, has been known and used for a...

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

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

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

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

Bessemer Process
The bessemer process consists of charging molten pig iron int...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

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

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

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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