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Steel Making

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

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

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

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...

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

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

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

The Electric Process
The fourth method of manufacturing steel is by the electric f...

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

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

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

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

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

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...



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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