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Steel Making

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

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

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

The Influence Of Size
The size of the piece influences the physical properties obta...

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

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

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

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

High Speed Steel
For centuries the secret art of making tool steel was handed ...

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

Crucible Steel
Crucible steel is still made by melting material in a clay or...

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

Nickel
Nickel may be considered as the toughest among the non-rare a...

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

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

Silicon
SILICON is a very widespread element (symbol Si), being an es...



The Effect






Category: HEAT TREATMENT OF STEEL

The heating at 1,600 deg.F. gives the first heat treatment
which refines the core, which under the former high heat (1,700 deg.F.)
was rendered coarsely crystalline. All the gears, including the
scrap gears, are quenched direct from the pot in this manner.

The gears then go to the reheating furnaces, situated in front of
a battery of Gleason quenching machines. These furnaces accommodate
from 12 to 16 crown gears. The carbon-steel gears are heated in a
reducing atmosphere to about 1,425 deg.F. (depending on the carbon
content) placed in the dies in the Gleason quenching machine, and
quenched between dies in mineral oil at less than 100 deg.F. The test
gear receives exactly the same treatment as the others and is then
broken, giving a record of the condition of both case and core.





Next: Affinity Of Nickel Steel For Carbon

Previous: Short Method Of Treatment



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