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Steel Making

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

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

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

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

Crucible Steel
Crucible steel is still made by melting material in a clay or...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

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

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

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

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

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

Quenching The Work
In some operations case-hardened work is quenched from the bo...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

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

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

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

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



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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