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Air-hardening Steels
These steels are recommended for boring, turning and planing...

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

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

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

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

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

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

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

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

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Conclusions
Martien was probably never a serious contender for the honor ...

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

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

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...



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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