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Steel Making

Furnace Data
In order to give definite information concerning furnaces, fu...

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

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

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

Sulphur
SULPHUR is another element (symbol S) which is always found i...

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

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

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

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

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

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

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

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

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

Nickel-chromium
A combination of the characteristics of nickel and the charac...

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

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...



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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