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Steel Making

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

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

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

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

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

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

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

Impact Tests
Impact tests are of considerable importance as an indication ...

Crankshaft
The crankshaft was the most highly stressed part of the entir...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

Crucible Steel
Crucible steel is still made by melting material in a clay or...

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

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

Compensating Leads
By the use of compensating leads, formed of the same materia...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Hardening
The forgings can be hardened by cooling in still air or quen...

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



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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