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Steel Making

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

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

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

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

Hardness Testing
The word hardness is used to express various properties of me...

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

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

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

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

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

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

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

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

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

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

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



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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