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Steel Making

Making Steel Balls
Steel balls are made from rods or coils according to size, st...

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

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

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

Hardening
Steel is hardened by quenching from above the upper critical....

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

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

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

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

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

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Impact Tests
Impact tests are of considerable importance as an indication ...

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



Tool Or Crucible Steel






Category: ANNEALING

Crucible steel can be annealed either in muffled furnace or by
being packed. Packing is by far the most satisfactory method as it
prevents scaling, local hard spots, uneven annealing, or violent
changes in shape. It should be brought up slowly to just above
its calescent or hardening temperature. The operator must know
before setting his heats the temperature at which the different
carbon content steels are hardened. The higher the carbon contents
the lower is the hardening heat, but this should in no case be
less than 1,450 deg.F.





Next: Annealing Alloy Steel

Previous: Annealing Of High-speed Steel



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