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

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

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

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

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

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

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

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

Conclusions
Martien was probably never a serious contender for the honor ...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

The Forging Of Steel
So much depends upon the forging of steel that this operation...

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

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

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



The Care Of Carburizing Compounds






Category: CASE-HARDENING OR SURFACE-CARBURIZING

Of all the opportunities for practicing economy in the heat-treatment
department, there is none that offers greater possibilities for
profitable returns than the systematic cleaning, blending and reworking
of artificial carburizers, or compounds.

The question of whether or not it is practical to take up the work
depends upon the nature of the output. If the sole product of the
hardening department consists of a 1.10 carbon case or harder,
requiring a strong highly energized material of deep penetrative
power such as that used in the carburizing of ball races, hub-bearings
and the like, it would be best to dispose of the used material to
some concern whose product requires a case with from 0.70 to 0.90
carbon, but where there is a large variety of work the compound
may be so handled that there will be practically no waste.

This is accomplished with one of the most widely known artificial
carburizers by giving all the compound in the plant three distinct
classifications: New, being direct from the maker; half and
half, being one part of new and one part first run; and 2 to 1,
which consists of two parts of old and one part new.





Next: Separating The Work From The Compound

Previous: Gas Consumption For Carburizing



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