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

Steel Making

Connecting Rods
The material used for all connecting rods on the Liberty engi...

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

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

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

The material used for all gears on the Liberty engine was sel...

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

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

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

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

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

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

Reheating for machine ability was done at 100 deg. less than ...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

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

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

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

Testing And Inspection Of Heat Treatment
The hard parts of the gear must be so hard that a new mill f...

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

Hardness Testing
The word hardness is used to express various properties of me...

Properties Of Steel


Steels are known by certain tests. Early tests were more or less
crude, and depended upon the ability of the workman to judge the
grain exhibited by a freshly broken piece of steel. The cold-bend
test was also very useful--a small bar was bent flat upon itself,
and the stretched fibers examined for any sign of break. Harder
stiff steels were supported at the ends and the amount of central
load they would support before fracture, or the amount of permanent
set they would acquire at a given load noted. Files were also used
to test the hardness of very hard steel.

These tests are still used to a considerable extent, especially in
works where the progress of an operation can be kept under close
watch in this way, the product being periodically examined by more
precise methods. The chief furnace-man, or melter, in a steel
plant, judges the course of the refining process by casting small
test ingots from time to time, breaking them and examining the
fracture. Cutlery manufacturers use the bend test to judge the
temper of blades. File testing of case-hardened parts is very common.

However there is need of standardized methods which depend less
upon the individual skill of the operator, and which will yield
results comparable to others made by different men at different
places and on different steels. Hence has grown up the art of testing

Next: Tensile Properties

Previous: Alloying Elements

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 4429