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Steel Making

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

The Influence Of Size
The size of the piece influences the physical properties obta...

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...

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

Drop Forging Dies
The kind of steel used in the die of course influences the he...

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

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

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

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

Quenching The Work
In some operations case-hardened work is quenched from the bo...

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

There is no mystery or secret about the proper annealing of d...

The Forging Of Steel
So much depends upon the forging of steel that this operation...

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

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

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

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

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

Connecting Rods
The material used for all connecting rods on the Liberty engi...

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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