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

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

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

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

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

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

Critical Points
One of the most important means of investigating the properti...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

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

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

Manganese
MANGANESE is a metal much like iron. Its chemical symbol is M...

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

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...



Annealing Work






Category: HEAT TREATMENT OF STEEL

With the exception of several of the higher types
of alloy steels, where the percentages of special elements run quite
high, which causes a slight air-hardening action, the carburizing
steels are soft enough for machining when air cooled from any
temperature, including the finishing temperature at the hammer.
This condition has led many drop-forge and manufacturing concerns
to consider annealing as an unnecessary operation and expense.
In many cases the drop forging has only been heated to a low
temperature, often just until the piece showed color, to relieve
the so-called hammer strains. While this has been only a compromise
it has been better than no reheating at all, although it has not
properly refined the grain, which is necessary for good machining
conditions.

Annealing is heating to a temperature slightly above the highest
critical point and cooling slowly either in the air or in the furnace.
Annealing is done to accomplish two purposes: (1) to relieve mechanical
strains and (2) to soften and produce a maximum refinement of grain.





Next: Process Of Carburizing

Previous: Heat Treatment Of Gear Blanks



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 4684