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Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Annealing Work
With the exception of several of the higher types of alloy s...

Lathe And Planer Tools
FORGING.--Gently warm the steel to remove any chill, is parti...

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

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

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

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

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

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

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

High Speed Steel
For centuries the secret art of making tool steel was handed ...

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



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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