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

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

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

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

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

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

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

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

Drop Forging Dies
The kind of steel used in the die of course influences the he...

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

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

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

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

Bessemer Process
The bessemer process consists of charging molten pig iron int...

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

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

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...



A Satisfactory Luting Mixture






Category: CASE-HARDENING OR SURFACE-CARBURIZING

A mixture of fireclay and sand will be found very satisfactory
for closing up the boxes, and by observing the appearance of the
work when taken out we can gage the suitability of the methods
employed, for unless the boxes are carefully sealed the work is
generally covered with dark scales, while if properly done the
articles will be of a light gray.

By observing the above recommendations reliable results can be obtained,
and we can expect uniform results after quenching.





Next: Gas Consumption For Carburizing

Previous: Using Illuminating Gas



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