Steelmaking.ca Home Steel Making Categories Manufacturing and the Economy of Machinery

Steel Making

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

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

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

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

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

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

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

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...

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

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

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

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

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

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

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

Heating
Although it is possible to work steels cold, to an extent de...

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

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



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 Informational Site Network
Report
Privacy
ADD TO EBOOK


Viewed 4905