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Steel Making

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

Tungsten, as an alloy in steel, has been known and used for a...

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

The material used for all gears on the Liberty engine was sel...

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

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

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

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

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

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

This steel like any other steel when distorted by cold worki...

Bessemer Process
The bessemer process consists of charging molten pig iron int...

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

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

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

Chromium when alloyed with steel, has the characteristic func...

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

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

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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