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

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

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Connecting Rods
The material used for all connecting rods on the Liberty engi...

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

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

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

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

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

Heating
Although it is possible to work steels cold, to an extent de...

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

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

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

Critical Points
One of the most important means of investigating the properti...

Gears
The material used for all gears on the Liberty engine was sel...

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



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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