Steelmaking.ca Home Steel Making Categories Manufacturing and the Economy of Machinery

Steel Making

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

Conclusions
Martien was probably never a serious contender for the honor ...

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

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

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

Hardening
The forgings can be hardened by cooling in still air or quen...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

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

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...



Gears






Category: APPLICATION OF LIBERTY ENGINE MATERIALS TO THE AUTOMOTIVE INDUSTRY

The material used for all gears on the Liberty engine was selected
at the option of the manufacturer from the following standard S.
A. E. steels, the composition of which are given in Table 12,

TABLE 12.--COMPOSITION OF STEELS NOS. X-3,340 AND 6,140

Steel No X-3,340 6,140
Carbon, minimum 0.350 0.350
Carbon, maximum 0.450 0.450
Manganese, minimum 0.450 0.500
Manganese, maximum 0.750 0.800
Phosphorus, maximum 0.040 0.040
Sulphur, maximum 0.045 0.045
Nickel, minimum 2.750
Nickel, maximum 3.250
Chromium, minimum 0.700 0.800
Chromium, maximum 0.950 1.100
Vanadium, minimum 0.150

All gears were heat-treated to a scleroscope hardness of from 55
to 55. The heat treatment used to secure this hardness consisted
in quenching the forgings from a temperature of 1,550 to 1,600 deg.F.
in oil and annealing for good machineability at a temperature of
from 1,300 to 1,350 deg.F. Forgings treated in this manner showed a
Brinell hardness of from 177 to 217.





Next: Rate Of Cooling

Previous: Highly Stressed Parts



Add to Informational Site Network
Report
Privacy
ADD TO EBOOK


Viewed 5084