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Steel Making

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

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

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

Care In Annealing
Not only will benefits in machining be found by careful anne...

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

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

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

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

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

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

Bessemer Process
The bessemer process consists of charging molten pig iron int...

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Compensating Leads
By the use of compensating leads, formed of the same materia...

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

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



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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