Wine Cultivation.com - Download the EBook Whiskey MakingInformational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

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

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

Bessemer Process
The bessemer process consists of charging molten pig iron int...

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

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

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

The Influence Of Size
The size of the piece influences the physical properties obta...

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

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

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

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

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

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

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

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

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

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



Open Hearth Process






Category: STEEL MAKING

The open hearth furnace consists of a big brick room with a low
arched roof. It is charged with pig iron and scrap through doors
in the side walls.


Through openings at one end of the furnace come hot air and gas,
which burn in the furnace, producing sufficient heat to melt the
charge and refine it of its impurities. Lime and other nonmetallic
substances are put in the furnace. These melt, forming a slag
which floats on the metal and aids materially in the refining
operations.

In the bessemer process air is forced through the metal. In the
open-hearth furnace the metal is protected from the flaming gases
by a slag covering. Therefore it is reasonable to suppose that
the final product will not contain so much gas.




A diagram of a modern regenerative furnace is shown in Fig. 3.
Air and gas enter the hearth through chambers loosely packed with
hot fire brick, burn, and exit to the chimney through another pair
of chambers, giving to them some of the heat which would otherwise
waste. The direction is reversed about every twenty minutes by
changing the position of the dampers.





Next: Crucible Steel

Previous: Bessemer Process



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 12736