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Steel Making

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...

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

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

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

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

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

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

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

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

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

Crankshaft
The crankshaft was the most highly stressed part of the entir...

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

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

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

Annealing Work
With the exception of several of the higher types of alloy s...

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...



Effects Of Proper Annealing






Category: HEAT TREATMENT OF STEEL

Proper annealing of low-carbon steels
causes a complete solution or combination to take place between
the ferrite and pearlite, producing a homogeneous mass of small
grains of each, the grains of the pearlite being surrounded by
grains of ferrite. A steel of this refinement will machine to good
advantage, due to the fact that the cutting tool will at all times
be in contact with metal of uniform composition.

While the alternate bands of ferrite and pearlite are microscopically
sized, it has been found that with a Gleason or Fellows gear-cutting
machine that rough cutting can be traced to poorly annealed steels,
having either a pronounced banded structure or a coarse granular
structure.





Next: Temperature For Annealing

Previous: Process Of Carburizing



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