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Steel Making

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

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

Impact Tests
Impact tests are of considerable importance as an indication ...

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

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

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

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

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

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

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

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

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

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

Care In Annealing
Not only will benefits in machining be found by careful anne...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...



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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