VIEW THE MOBILE VERSION of Informational Site Network Informational
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

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

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

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

Crucible Steel
Crucible steel is still made by melting material in a clay or...

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

The material used for all gears on the Liberty engine was sel...

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

Restoring Overheated Steel
The effect of heat treatment on overheated steel is shown gra...

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

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

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

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

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

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

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

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

Add to Add to Reddit Add to Digg Add to Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network

Viewed 2966