VIEW THE MOBILE VERSION of www.steelmaking.ca Informational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

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

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

Double Annealing
Water annealing consists in heating the piece, allowing it to...

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

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

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

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

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

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

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

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

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

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

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

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

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

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

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

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

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



Restoring Overheated Steel






Category: HARDENING CARBON STEEL FOR TOOLS

The effect of heat treatment on overheated steel is shown graphically
in Fig. 65 to the series of illustrations on pages 137 to 144. This
was prepared by Thos. Firth & Sons, Ltd., Sheffield, England.



The center piece Fig. 65 represents a block of steel weighing about
25 lb. The central hole accommodated a thermo-couple which was attached
to an autographic recorder. The curve is a copy of the temperature
record during heating and cooling. Into the holes in the side of
the block small pegs of overheated mild steel were inserted. One
peg was withdrawn and quenched at each of the temperatures indicated
by the numbered arrows, and after suitable preparation these pegs
were photographed in order to show the changes in structure taking
place during heating and cooling operations. The illustrations here
reproduced are selected from those photographs with the object
of presenting pictorially the changes involved in the refining of
overheated steel or steel castings.





Next: Hardening Carbon Steel For Tools

Previous: S A E Heat Treatments



Add to del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK


Viewed 4365