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Steel Making

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

Complete Calibration Of Pyrometers
For the complete calibration of a thermo-couple of unknown e...

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

Nickel-chromium
A combination of the characteristics of nickel and the charac...

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

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...

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

The Influence Of Size
The size of the piece influences the physical properties obta...

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

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

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

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

Piston Pin
The piston pin on an aviation engine must possess maximum res...

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

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Furnace Data
In order to give definite information concerning furnaces, fu...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

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



Quenching The Work






Category: CASE-HARDENING OR SURFACE-CARBURIZING

In some operations case-hardened work is quenched from the box by
dumping the whole contents into the quenching tank. It is common
practice to leave a sieve or wire basket to catch the work, allowing
the carburizing material to fall to the bottom of the tank where it
can be recovered later and used again as a part of a new mixture.
For best results, however, the steel is allowed to cool down slowly
in the box after which it is removed and hardened by heating and
quenching the same as carbon steel of the same grade. It has absorbed
sufficient carbon so that, in the outer portions at least, it is
a high-carbon steel.





Next: The Quenching Tank

Previous: Effect Of Different Carburizing Material



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