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Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

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

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

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

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

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

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

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

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

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

Bessemer Process
The bessemer process consists of charging molten pig iron int...

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

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

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

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...

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

Annealing
There is no mystery or secret about the proper annealing of d...



Heat Treatment Of Steel






Category: HEAT TREATMENT OF STEEL

Heat treatment consists in heating and cooling metal at definite
rates in order to change its physical condition. Many objects may
be attained by correct heat treatment, but nothing much can be
expected unless the man who directs the operations knows what is
the essential difference in a piece of steel at room temperature
and at a red heat, other than the obvious fact that it is hot. The
science of metallography has been developed in the past 25 years,
and aided by precise methods of measuring temperature, has done
much to systematize the information which we possess on metallic
alloys, and steel in particular.





Next: Critical Points

Previous: Blending The Compound



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