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

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

Annealing
ANNEALING can be done by heating to temperatures ranging from...

Annealing
There is no mystery or secret about the proper annealing of d...

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

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

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

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

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

Nickel
Nickel may be considered as the toughest among the non-rare a...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

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

Manganese
Manganese adds considerably to the tensile strength of steel,...

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

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

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

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



Separating The Work From The Compound






Category: CASE-HARDENING OR SURFACE-CARBURIZING

During the pulling of the heat, the pots are dumped upon a cast-iron
screen which forms a table or apron for the furnace. Directly beneath
this table is located one of the steel conveyor carts, shown in Fig.
43, which is provided with two wheels at the rear and a dolly clevis
at the front, which allows it to be hauled away from beneath the
furnace apron while filled with red-hot compound. A steel cover is
provided for each box, and the material is allowed to cool without
losing much of the evolved gases which are still being thrown off
by the compound.




As this compound comes from the carburizing pots it contains bits
of fireclay which represent a part of the luting used for sealing,
and there may be small parts of work or bits of fused material
in it as well. After cooling, the compound is very dusty and
disagreeable to handle, and, before it can be used again, must be
sifted, cleaned and blended.

Some time ago the writer was confronted with this proposition for
one of the largest consumers of carburizing compound in the world,
and the problem was handled in the following manner: The cooled
compound was dumped from the cooling cars and sprinkled with a
low-grade oil which served the dual purposes of settling the dust
and adding a certain percentage of valuable hydrocarbon to the
compound. In Fig. 44 is shown the machine that was designed to do
the cleaning and blending.





Next: Blending The Compound

Previous: The Care Of Carburizing Compounds



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 3781