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

Hardening
The forgings can be hardened by cooling in still air or quen...

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

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

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

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

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

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

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

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

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

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

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

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

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

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

High Speed Steel
For centuries the secret art of making tool steel was handed ...



High Speed Steel






Category: HIGH-SPEED STEEL

For centuries the secret art of making tool steel was handed down
from father to son. The manufacture of tool steel is still an art
which, by the aid of science, has lost much of its secrecy; yet
tool steel is today made by practical men skilled as melters,
hammer-men, and rollers, each knowing his art. These practical
men willingly accept guidance from the chemist and metallurgists.

A knowledge of conditions existing today in the manufacture of
high-speed steel is essential to steel treaters. It is well for
the manufacturer to have steel treaters understand some of his
troubles and difficulties, so that they will better comprehend the
necessity of certain trade customs and practices, and, realizing
the manufacturer's desire to cooperate with them, will reciprocate.

The manufacturer of high-speed steel knows and appreciates the
troubles and difficulties that may sometimes arise in the heat-treating
of his product. His aim is to make a uniform steel that will best
meet the requirements of the average machine shop on general work,
and at the same time allow the widest variation in heat treatment
to give desired results.

High speed steel is one of the most complex alloys known. A
representative steel contains approximately 24 per cent of alloying
metals, namely, tungsten, chromium, vanadium, silicon, manganese,
and in addition there is often found cobalt, molybdenum, uranium,
nickel, tin, copper and arsenic.





Next: Standard Analysis

Previous: Tempering Colors On Carbon Steels



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