A man left his cat with his brother while he went on vacation for a week. When he came back, he called his brother to see when he could pick the cat up. The brother hesitated, then said, "I'm so sorry, but while you were away, the cat died." The ma... Read more of Cat on the roof at Free Jokes.caInformational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

The Electric Process
The fourth method of manufacturing steel is by the electric f...

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...

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

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

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

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

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

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

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

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

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

Using Illuminating Gas
The choice of a carburizing furnace depends greatly on the fa...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

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



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 3270