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Steel Making

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

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

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

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

Conclusions
Martien was probably never a serious contender for the honor ...

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

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

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

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

Connecting Rods
The material used for all connecting rods on the Liberty engi...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

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

Quenching
It is considered good practice to quench alloy steels from th...

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

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



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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