There was an old fellow named Green, Who grew so abnormally lean, And flat, and compressed, That his back touched his chest, And sideways he couldn't be seen. There was a young lady of Lynn, Who was so excessively thin,... Read more of THIN PEOPLE at Free Jokes.caInformational Site Network Informational
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Steel Making

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

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

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

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

Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

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

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

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

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

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

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

Crankshaft
The crankshaft was the most highly stressed part of the entir...

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

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



Separating The Work From The Compound






Category: CASE-HARDENING OR SURFACE-CARBURIZING

During the pulling of the heat, the pots are dumped upon a cast-iron
screen which forms a table or apron for the furnace. Directly beneath
this table is located one of the steel conveyor carts, shown in Fig.
43, which is provided with two wheels at the rear and a dolly clevis
at the front, which allows it to be hauled away from beneath the
furnace apron while filled with red-hot compound. A steel cover is
provided for each box, and the material is allowed to cool without
losing much of the evolved gases which are still being thrown off
by the compound.




As this compound comes from the carburizing pots it contains bits
of fireclay which represent a part of the luting used for sealing,
and there may be small parts of work or bits of fused material
in it as well. After cooling, the compound is very dusty and
disagreeable to handle, and, before it can be used again, must be
sifted, cleaned and blended.

Some time ago the writer was confronted with this proposition for
one of the largest consumers of carburizing compound in the world,
and the problem was handled in the following manner: The cooled
compound was dumped from the cooling cars and sprinkled with a
low-grade oil which served the dual purposes of settling the dust
and adding a certain percentage of valuable hydrocarbon to the
compound. In Fig. 44 is shown the machine that was designed to do
the cleaning and blending.





Next: Blending The Compound

Previous: The Care Of Carburizing Compounds



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