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

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

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

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

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

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

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

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

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

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

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

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

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

Quenching The Work
In some operations case-hardened work is quenched from the bo...

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

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



Annealing Of Rifle Components At Springfield Armory






Category: CASE-HARDENING OR SURFACE-CARBURIZING

In general, all forgings of the components of the arms manufactured
at the Armory and all forgings for other ordnance establishments
are packed in charcoal, lime or suitable material and annealed
before being transferred from the forge shop.

Except in special cases, all annealing will be done in annealing
pots of appropriate size. One fire end of a thermo-couple is inserted
in the center of the annealing pot nearest the middle of the furnace

and another in the furnace outside of but near the annealing pots.

The temperatures used in annealing carbon steel components of the
various classes used at the Armory vary from 800 deg.C. To 880 deg.C. or
1,475 to 1,615 deg.F.

The fuel is shut off from the annealing furnace gradually as the
temperature of the pot approaches the prescribed annealing temperature
so as to prevent heating beyond that temperature.

The forgings of the rifle barrel and the pistol barrel are exceptions
to the above general rule. These forgings will be packed in lime
and allowed to cool slowly from the residual heat after forging.





Next: Surface Carburizing

Previous: Annealing In Bone



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 3660