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Steel Making

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

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

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

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

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

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

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

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

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

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

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

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

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

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

Chromium
Chromium when alloyed with steel, has the characteristic func...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

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



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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