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Steel Making

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

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

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

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

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

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

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

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

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

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

Drop Forging Dies
The kind of steel used in the die of course influences the he...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Corrosion
This steel like any other steel when distorted by cold worki...

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

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

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

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

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



A Satisfactory Luting Mixture






Category: CASE-HARDENING OR SURFACE-CARBURIZING

A mixture of fireclay and sand will be found very satisfactory
for closing up the boxes, and by observing the appearance of the
work when taken out we can gage the suitability of the methods
employed, for unless the boxes are carefully sealed the work is
generally covered with dark scales, while if properly done the
articles will be of a light gray.

By observing the above recommendations reliable results can be obtained,
and we can expect uniform results after quenching.





Next: Gas Consumption For Carburizing

Previous: Using Illuminating Gas



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