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

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

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

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

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

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

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

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

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

Hardening
Steel is hardened by quenching from above the upper critical....

Annealing Method
Forgings which are too hard to machine are put in pots with ...

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

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

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...

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

Manganese
Manganese adds considerably to the tensile strength of steel,...

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

Heating
Although it is possible to work steels cold, to an extent de...

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



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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