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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...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

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

Compensating Leads
By the use of compensating leads, formed of the same materia...

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

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

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

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

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

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

Annealing Method
Forgings which are too hard to machine are put in pots with ...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

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

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

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

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

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



Impact Tests






Category: COMPOSITION AND PROPERTIES OF STEEL

Impact tests are of considerable importance as an indication of
how a metal will perform under shock. Some engineers think that
the tensile test, which is one made under slow loading, should
therefore be supplemented by another showing what will happen if
the load is applied almost instantaneously. This test, however, has
not been standardized, and depends to a considerable extent upon
the type of machine, but more especially the size of the specimen
and the way it is nicked. The machine is generally a swinging
heavy pendulum. It falls a certain height, strikes the sample at
the lowest point, and swings on past. The difference between the
downward and upward swing is a measure of the energy it took to
break the test piece.





Next: Fatigue Tests

Previous: Tensile Properties



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