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Steel Making

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

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

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

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

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

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

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

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

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

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

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

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

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

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

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

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

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...



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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