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Steel Making

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

Annealing
ANNEALING can be done by heating to temperatures ranging from...

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

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

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

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

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

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

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

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

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

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

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

Compensating Leads
By the use of compensating leads, formed of the same materia...

Nickel
Nickel may be considered as the toughest among the non-rare a...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Piston Pin
The piston pin on an aviation engine must possess maximum res...

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...



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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