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Steel Making

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

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

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Compensating Leads
By the use of compensating leads, formed of the same materia...

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

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

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

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

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

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

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

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

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

It is considered good practice to quench alloy steels from th...

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

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

Blending The Compound


Essentially, this consists of the sturdy, power-driven separator
and fanning mill which separates the foreign matter from the compound
and elevates it into a large settling basin which is formed by
the top of the steel housing that incloses the apparatus. After
reaching the settling basin, the compound falls by gravity into
a power-driven rotary mixing tub which is directly beneath the
settling basin. Here the blending is done by mixing the proper
amount of various grades of material together. After blending the
compound, it is ready to be stored in labeled containers and delivered
to the packing room.

It will be seen that by this simple system there is the least possible
loss of energy from the compound. The saving commences the moment
the cooling cart is covered and preserves the valuable dust which is
saved by the oiling and the settling basin of the blending machine.

Then, too, there is the added convenience of the packers who have
a thoroughly cleaned, dustless, and standardized product to work
with. Of course, this also tends to insure uniformity in the
case-hardening operation.

With this outfit, one man cleans and blends as much compound in
one hour as he formerly did in ten.

Next: Heat Treatment Of Steel

Previous: Separating The Work From The Compound

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