Informational Site NetworkInformational Site Network
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

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

The Modern Hardening Room
A hardening room of today means a very different place from ...

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

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

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

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

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

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

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

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

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

There is no mystery or secret about the proper annealing of d...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

Furnace Data
In order to give definite information concerning furnaces, fu...

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

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

Heat Treatment Of Gear Blanks


This section is based on a paper read before the American Gear
Manufacturers' Association at White Sulphur Springs, W. Va., Apr.
18, 1918.

Great advancement has been made in the heat treating and hardening of
gears. In this advancement the chemical and metallurgical laboratory
have played no small part. During this time, however, the condition
of the blanks as they come to the machine shop to be machined has
not received its share of attention.

There are two distinct types of gears, both types having their
champions, namely, carburized and heat-treated. The difference
between the two in the matter of steel composition is entirely in
the carbon content, the carbon never running higher than 25-point
in the carburizing type, while in the heat-treated gears the carbon
is seldom lower than 35-point. The difference in the final gear
is the hardness. The carburized gear is file hard on the surface,
with a soft, tough and ductile core to withstand shock, while the
heat-treated gear has a surface that can be touched by a file with
a core of the same hardness as the outer surface.

Next: Annealing Work

Previous: Judging The Heat Of Steel

Add to Add to Reddit Add to Digg Add to Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network

Viewed 4420