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Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

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

The Forging Of Steel
So much depends upon the forging of steel that this operation...

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

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

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

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

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

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

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

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

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

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

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



Heat Treatment Of Punches And Dies Shears Taps Etc






Category: HIGH-SPEED STEEL

HEATING.--The degree to which tools of the above classes should
be heated depends upon the shape, size and use for which they are
intended. Generally, they should not be heated to quite as high a
heat as lathe tools or milling cutters. They should have a high
heat, but not enough to make the flux run on the steel (by pyrometer
1,900 to 2,100 deg.F.).

COOLING.--Depending on the tools, some should be dipped in oil
all over, some only part way, and others allowed to cool down in
the air naturally, or under air blast. In cooling, the toughness
is retained by allowing some parts to cool slowly and quenching
parts that should be hard.

DRAWING THE TEMPER.--As in cooling, some parts of these tools will
require more drawing than others, but, on the whole, they must
be drawn more than water hardening tools for the same purpose or
to about 500 deg.F. all over, so that a good file will just touch
the cutting or working parts.

BARIUM CHLORIDE PROCESS.--This is a process developed for treating
certain classes of tools, such as taps, forming tools, etc. It is
being successfully used in many large plants. Briefly the treatment
is as follows:

In this treatment the tools are first preheated to a red heat,
but small tools may be immersed without preheating. The barium
chloride bath is kept at a temperature of from 2,000 to 2,100 deg.F.,
and tools are held in it long enough to reach the same temperature.
They are then dipped in oil. The barium chloride which adheres
to the tools is brushed off, leaving the tools as dean as before
heating.





Next: A Chromium-cobalt Steel

Previous: Heat Treatment Of Milling Cutters Drills Reamers Etc



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