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   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

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

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

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

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

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

Chromium
Chromium when alloyed with steel, has the characteristic func...

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

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

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...

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

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

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

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

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

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

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

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

The Electric Process
The fourth method of manufacturing steel is by the electric f...



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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