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Steel Making

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

Corrosion
This steel like any other steel when distorted by cold worki...

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

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

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

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

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

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

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

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

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

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

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

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

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

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...



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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