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Steel Making

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

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

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

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

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

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

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

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

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

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

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...



The Penetration Of Carbon






Category: CASE-HARDENING OR SURFACE-CARBURIZING

Carburized mild steel is used to a great extent in the manufacture
of automobile and other parts which are likely to be subjected to
rough usage. The strength and ability to withstand hard knocks
depend to a very considerable degree on the thoroughness with which
the carburizing process is conducted.

Many automobile manufacturers have at one time or another passed
through a period of unfortunate breakages, or have found that for
a certain period the parts turned out of their hardening shops
were not sufficiently hard to enable the rubbing surfaces to stand
up against the pressure to which they were subjected.

So many factors govern the success of hardening that often this
succession of bad work has been actually overcome without those
interested realizing what was the weak point in their system of
treatment. As the question is one that can create a bad reputation
for the product of any firm it is well to study the influential
factors minutely.





Next: Introduction Of Carbon

Previous: Preparing Parts For Local Case-hardening



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