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Steel Making

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

Annealing Work
With the exception of several of the higher types of alloy s...

Connecting Rods
The material used for all connecting rods on the Liberty engi...

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

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

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

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

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

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

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

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

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

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

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

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

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...



Correction By Zero Adjustment






Category: PYROMETRY AND PYROMETERS

Many pyrometers are supplied with
a zero adjuster, by means of which the pointer can be set to any
actual cold-junction temperature. If the cold junction of the
thermo-couple is in a temperature of 100 deg.F., the pointer can be
set to this point on the scale, and the readings of the instrument
will be correct.





Next: Compensating Leads

Previous: Correction For Cold-junction Errors



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