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Steel Making

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

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

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

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

Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

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...

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

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

Quenching The Work
In some operations case-hardened work is quenched from the bo...

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

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

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

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

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

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

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

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



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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