VIEW THE MOBILE VERSION of Informational Site Network Informational
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

The Modern Hardening Room
A hardening room of today means a very different place from ...

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

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

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

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

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

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

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

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

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

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

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

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

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

Process Of Carburizing


Carburizing imparts a shell of high-carbon
content to a low-carbon steel. This produces what might be termed
a dual steel, allowing for an outer shell which when hardened
would withstand wear, and a soft ductile core to produce ductility
and withstand shock. The operation is carried out by packing the
work to be carburized in boxes with a material rich in carbon and
maintaining the box so charged at a temperature in excess of the
highest critical point for a length of time to produce the desired
depth of carburized zone. Generally maintaining the temperature
at 1,650 to 1,700 deg. F. for 7 hr. will produce a carburized zone
1/32 in. deep.

Heating to a temperature slightly above the highest critical point
and cooling suddenly in some quenching medium, such as water or oil
hardens the steel. This treatment produces a maximum refinement
with the maximum strength.

Drawing to a temperature below the highest critical point (the
temperature being governed by the results required) relieves the
hardening strains set up by quenching, as well as the reducing
of the hardness and brittleness of hardened steel.

Next: Effects Of Proper Annealing

Previous: Annealing Work

Add to Add to Reddit Add to Digg Add to Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network

Viewed 4284