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

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

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

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

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

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

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

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

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

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

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

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

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Crucible Steel
Crucible steel is still made by melting material in a clay or...

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

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

Compensating Leads
By the use of compensating leads, formed of the same materia...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...



Cyanide Bath For Tool Steels






Category: HEAT TREATMENT OF STEEL

All high-carbon tool steels are
heated in a cyanide bath. With this bath, the heat can be controlled
within 3 deg. The steel is evenly heated without exposure to the
air, resulting in work which is not warped and on which there is no
scale. The cyanide bath is, of course, not available for high-speed
steel because of the very high temperatures necessary.





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