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Steel Making

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

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

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

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

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

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

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

ANNEALING can be done by heating to temperatures ranging from...

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

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

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

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

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

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

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

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

Pickling The Forgings


The forgings were then pickled in a hot solution of either niter
cake or sulphuric acid and water at a temperature of 170 deg.F., and
using a solution of about 25 per cent. The solution was maintained
at a constant point by taking hydrometer readings two or three
times a day, maintaining a reading of about 1.175. Sixty forked or
one hundred single rods were placed in wooden racks and immersed
in a lead-lined vat 30 by 30 by 5 ft. long. The rack was lowered
or lifted by means of an air hoist and the rods were allowed to
stay in solution from 1/2 to 1 hr., depending on the amount of
scale. The rods were then swung and lowered in the rack into running
hot water until all trace of the acid was removed.

The rod was finally subjected to Brinell test. This shows whether
or not the rod has been heat-treated to the proper hardness. If
the rods did not read between 241 and 277, they were re-treated
until the proper hardness is obtained.

Next: Application Of Liberty Engine Materials To The Automotive Industry

Previous: Liberty Motor Connecting Rods

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