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Steel Making

Pyrometers
Armor plate makers sometimes use the copper ball or Siemens' ...

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

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

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

Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

Annealing
There is no mystery or secret about the proper annealing of d...

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

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

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

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

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

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

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

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

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

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

Annealing
ANNEALING can be done by heating to temperatures ranging from...



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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