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Steel Making

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

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

This steel like any other steel when distorted by cold worki...

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

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

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

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

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

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

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

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

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

PHOSPHORUS is an element (symbol P) which enters the metal fr...

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

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

Separating The Work From The Compound


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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