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

Steel Making

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

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

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

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

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

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

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...

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

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

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

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

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

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

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

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

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

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



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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