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

Steel Making

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

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

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

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

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

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

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

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

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

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

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

Connecting Rods
The material used for all connecting rods on the Liberty engi...

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

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

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

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



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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