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

Annealing Method
Forgings which are too hard to machine are put in pots with ...

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

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

Compensating Leads
By the use of compensating leads, formed of the same materia...

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

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

Hardening
The forgings can be hardened by cooling in still air or quen...

Chromium
Chromium when alloyed with steel, has the characteristic func...

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

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

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

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

Conclusions
Martien was probably never a serious contender for the honor ...

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

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

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

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



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 4852