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

Steel Making

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

Crankshaft
The crankshaft was the most highly stressed part of the entir...

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

Manganese
Manganese adds considerably to the tensile strength of steel,...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

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

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

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

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

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

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

Nickel
Nickel may be considered as the toughest among the non-rare a...

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

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

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Quenching
It is considered good practice to quench alloy steels from th...



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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