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Steel Making

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

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

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

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

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

Critical Points
One of the most important means of investigating the properti...

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

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

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

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

Annealing Method
Forgings which are too hard to machine are put in pots with ...

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

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

Hardening
Steel is hardened by quenching from above the upper critical....

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

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



Pickling The Forgings






Category: APPLICATION OF LIBERTY ENGINE MATERIALS TO THE AUTOMOTIVE INDUSTRY

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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