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Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

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

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

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

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

Critical Points
One of the most important means of investigating the properti...

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

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

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

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

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

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

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

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

Manganese
MANGANESE is a metal much like iron. Its chemical symbol is M...

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



Heating Of Manganese Steel






Category: FURNACES

Another form of heat-treating furnace
is that which is used for the heating of manganese and other alloy
steels, which after having been brought to the proper heat are drawn
from the furnace into an immediate quenching tank. With manganese
steel in particular, the parts are so fragile and easily damaged
while hot that it is frequent practice to have a sloping platform
immediately in front of the furnace door down which the castings
may slide into a tank below the floor level. Such a furnace with
a quenching tank in front of its door is shown in Fig. 108.

These tanks are covered with plates while charging the furnace
and the cold castings are placed in a moderately cool furnace.
Since some of these steels must not be charged into a furnace where
the heat is extreme but should be brought up to their final heat
gradually, there is little discomfort during the charging process.
When quenching, however, from a temperature of 1,800 deg. to 1,900 deg.,
it is extremely unpleasant in front of the doors. The swinging
shield is here adapted to give protection for this work. As will
be noted it is hung a sufficient distance in front of the doors,
that it may not interfere with the castings as they come from the
furnace, and slide down into the tank.

To facilitate the work, and avoid the necessity of working with
the bars outside the edges of the shield, the slot-like hole is
cut in the center of the shield, and through this the bars or rakes
for dragging out the castings are easily inserted and manipulated.
The advantage of such a swinging shield is that it may be readily
moved from side to side, or forward and back as occasion requires.





Next: Furnace Data

Previous: Flange Shields For Furnaces



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