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Steel Making

Conclusions
Martien was probably never a serious contender for the honor ...

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

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

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

Annealing
There is no mystery or secret about the proper annealing of d...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

The Modern Hardening Room
A hardening room of today means a very different place from ...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

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...

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

Critical Points
One of the most important means of investigating the properti...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

Drop Forging Dies
The kind of steel used in the die of course influences the he...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

The Influence Of Size
The size of the piece influences the physical properties obta...

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



Forging High-speed Steel






Category: THE FORGING OF STEEL

Heat very slowly and carefully to from 1,800
to 2,000 deg.F. and forge thoroughly and uniformly. If the forging
operation is prolonged do not continue forging the tool when the
steel begins to stiffen under the hammer. Do not forge below 1,700 deg.F.
(a dark lemon or orange color). Reheat frequently rather than prolong
the hammering at the low heats.

After finishing the forging allow the tool to cool as slowly as
possible in lime or dry ashes; avoid placing the tool on the damp
ground or in a draught of air. Use a good clean fire for heating.
Do not allow the tool to soak at the forging heat. Do not heat any
more of the tool than is necessary in order to forge it to the
desired shape.





Next: Carbon Tool Steel

Previous: Steel Can Be Worked Cold



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