Steelmaking.ca Home Steel Making Categories Manufacturing and the Economy of Machinery

Steel Making

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

Gears
The material used for all gears on the Liberty engine was sel...

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

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

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

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

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

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

High Speed Steel
For centuries the secret art of making tool steel was handed ...

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

Hardening
The forgings can be hardened by cooling in still air or quen...

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

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

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

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



Brown Automatic Signaling Pyrometer






Category: PYROMETRY AND PYROMETERS

In large heat-treating plants it has been customary to maintain
an operator at a central pyrometer, and by colored electric lights
at the furnaces, signal whether the temperatures are correct or
not. It is common practice to locate three lights above each
furnace-red, white and green. The red light burns when the temperature
is too low, the white light when the temperature is within certain
limits--for example, 20 deg.F. of the correct temperature--and the
green light when the temperature is too high.



Instruments to operate the lights automatically have been devised and
one made by Brown is shown in Fig. 130. The same form of instrument is
used for this purpose to automatically control furnace temperatures,
and the pointer is depressed at intervals of every 10 sec. on contacts
corresponding to the red, white and green lights.





Next: An Automatic Temperature Control Pyrometer

Previous: Compensating Leads



Add to Informational Site Network
Report
Privacy
ADD TO EBOOK


Viewed 4453