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Steel Making

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

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

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

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

Hardness Testing
The word hardness is used to express various properties of me...

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

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

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

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

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

Lathe And Planer Tools
FORGING.--Gently warm the steel to remove any chill, is parti...

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

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

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

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

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

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...



Heat Treatment Of Lathe Planer And Similar Tools






Category: HIGH-SPEED STEEL

FIRE.--For these tools a good fire is one made of hard foundry
coke, broken in small pieces, in an ordinary blacksmith forge with
a few bricks laid over the top to form a hollow fire. The bricks
should be thoroughly heated before tools are heated. Hard coal
may be used very successfully in place of hard coke and will give
a higher heat. It is very easy to give Blue Chip the proper heat
if care is used in making up the fire.

FORGING.--Heat slowly and uniformly to a good forging heat. Do
not hammer the steel after it cools below a bright red. Avoid as
much as possible heating the body of the tool, so as to retain
the natural toughness in the neck of the tool.

HARDENING.--Heat the point of the tool to an extreme white heat
(about 2,200 deg.F.) until the flux runs. This heat should be the highest
possible short of melting the point. Care should be taken to confine
the heat as near to the point as possible so as to leave the annealing
and consequent toughness in the neck of the tool and where the tool
is held in the tool post.

COOL in an air blast, the open air or in oil, depending upon the
tools or the work they are to do.

For roughing tools temper need not be drawn except for work where
the edge tends to crumble on account of being too hard.

For finishing tools draw the temper to suit the purpose for which
they are to be used.

GRIND thoroughly on dry wheel (or wet wheel if care is used to prevent
checking).





Next: Heat Treatment Of Milling Cutters Drills Reamers Etc

Previous: Lathe And Planer Tools



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