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

Steel Making

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

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

Annealing Work
With the exception of several of the higher types of alloy s...

Air-hardening Steels
These steels are recommended for boring, turning and planing...

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

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

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...

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

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Bessemer Process
The bessemer process consists of charging molten pig iron int...

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

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

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

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

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

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

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



Air-hardening Steels






Category: FURNACES

These steels are recommended for boring,
turning and planing where the cost of high-speed seems excessive.
They are also recommended for hard wood knives, for roughing and
finishing bronze and brass, and for hot bolt forging dies. This
steel cannot be cut or punched cold but can be shaped and ground
on abrasive wheels of various kinds.

It should be heated slowly and evenly for forging and kept as evenly
heated at a bright red as possible. It should not be forged after
it cools to a dark red.

After the tool is made, heat it again to a bright red and lay it
down to cool in a dry place or it can be cooled in a cold, dry
air blast. Water must be kept away from it while it is hot.





Next: Typical Oil-fired Furnaces

Previous: Hardening High-speed Steel



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