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Steel Making

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

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

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

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

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

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

Furnace Data
In order to give definite information concerning furnaces, fu...

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

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

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

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

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

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

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

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

The Care Of Carburizing Compounds


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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