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Steel Making

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

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

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

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

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

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

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

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

Conclusions
Martien was probably never a serious contender for the honor ...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

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

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

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

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...



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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