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

Steel Making

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

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

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

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

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

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

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

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

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

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

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

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

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

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

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...

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

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

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...



Heat Treatment Of Gear Blanks






Category: HEAT TREATMENT OF STEEL

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 del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK


Viewed 3918