The Line of Head, or indication of the Mentality of the subject, must in all cases be considered as the most important line on the hand. The greatest attention should be paid to it, so as to obtain a clear grasp of the Mentality under considera... Read more of The Line Of Head And Its Variations at Palm Readings.orgInformational Site Network Informational
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Steel Making

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

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

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

Quenching
It is considered good practice to quench alloy steels from th...

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

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

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

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

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

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

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

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...



Hints For Tool Steel Users






Category: HARDENING CARBON STEEL FOR TOOLS

Do not hesitate to ask for information from the maker as to the
best steel to use for a given purpose, mentioning in as much detail
as possible the use for which it is intended.

Do not heat the steel to a higher degree than that fixed in the
description of each class. Never heat the steel to more than a
cherry red without forging it or giving it a definite heat treatment.
Heating steel at even moderate temperature is liable to coarsen the
grain which can only be restored by forging or by heat treating.

Let the forging begin as soon as the steel is hot enough and never
let tool steel soak in the fire. Continue the hammering vigorously
and constantly, using lighter blows as it cools off, and stopping
when the heat becomes a very dull red or a faint brown.

Should welding be necessary care should be taken not to overheat
in order to make an easy weld. Keep it below the sparkling point
as this indicates that the steel is burnt.

Begin to forge as soon as the welds are put together, taking care
to use gentle strokes at first increasing them as the higher heat
falls, but not overdoing the hammering when the steel cools. The
hammering should be extended beyond the welding point and should
continue until the dull red or brown heat is reached.





Next: Preventing Cracks In Hardening

Previous: Knowing What Takes Place



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