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

Steel Making

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

Manganese
Manganese adds considerably to the tensile strength of steel,...

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

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

Piston Pin
The piston pin on an aviation engine must possess maximum res...

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

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

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

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

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

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

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

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

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

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



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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