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Steel Making

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

A combination of the characteristics of nickel and the charac...

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

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

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

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

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

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

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

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

Chromium when alloyed with steel, has the characteristic func...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

Nickel may be considered as the toughest among the non-rare a...

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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