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Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

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

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

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

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

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

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

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

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

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

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

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Hardness Testing
The word hardness is used to express various properties of me...

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

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

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Heat-treating Equipment And Methods For Mass Production
The heat-treating department of the Brown-Lipe-Chapin Company...



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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