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

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

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

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

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

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

Care In Annealing
Not only will benefits in machining be found by careful anne...

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

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...

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

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

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

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

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

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

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



Instructions For Working High-speed Steel






Category: HIGH-SPEED STEEL

Owing to the wide variations in the composition of high-speed steels
by various makers, it is always advisable to follow the directions
of each when using his brand of steel. In the absence of specific
directions the following general suggestions from several makers
will be found helpful.

The Ludlum Steel Company recommend the following:

CUTTING-OFF.--To cut a piece from an annealed bar, cut off with
a hack saw, milling cutter or circular saw. Cut clear through the
bar; do not nick or break. To cut a piece from an unannealed bar,
cut right off with an abrasive saw; do not nick or break. If of
large cross-section, cut off hot with a chisel by first slowly
and uniformly heating the bar, at the point to be cut, to a good
lemon heat, 1,800 deg.-1,850 deg.F. and cut right off while hot; do not nick
or break. Allow the tool length and bar to cool before reheating
for forging.





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