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

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

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

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

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

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

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Air-hardening Steels
These steels are recommended for boring, turning and planing...

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

Heating
Although it is possible to work steels cold, to an extent de...

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

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

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

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

Standard Analysis
The selection of a standard analysis by the manufacturer is t...



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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