Effect: Magician lays out 11 cards and asks a volunteer to move several cards over from the right side to the left side while the magician's back is to the cards so he/she doesn't see how many. Then, when the volunteer is done the magician tu... Read more of Card Trick 2 at Card Trick.caInformational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Crucible Steel
Crucible steel is still made by melting material in a clay or...

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

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

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

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

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

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

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

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

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

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

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

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

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

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

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



Preventing Decarbonization Of Tool Steel






Category: HARDENING CARBON STEEL FOR TOOLS

It is especially important to prevent decarbonization in such tools
as taps and form cutters, which must keep their shape after hardening
and which cannot be ground away on the profile. For this reason
it is well to put taps, reamers and the like into pieces of pipe
in heating them. The pipe need be closed on one end only, as the
air will not circulate readily unless there is an opening at both
ends.

Even if used in connection with a blacksmith's forge the lead bath
has an advantage for heating tools of complicated shapes, since
it is easier to heat them uniformly and they are submerged and
away from the air. The lead must be stirred frequently or the heat
is not uniform in all parts of the lead bath. Covering the lead
with powdered charcoal will largely prevent oxidization and waste
of lead.

Such a bath is good for temperatures between 620 and 1,150 deg.F. At
higher temperatures there is much waste of lead.





Next: Annealing To Relieve Internal Stresses

Previous: Steel For Chisels And Punches



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 5596