For the sun that shone at the dawn of spring, For the flowers which bloom and the birds that sing, For the verdant robe of the gray old earth, For her coffers filled with their countless worth, For the flocks which feed on a thousand hills,... Read more of A Song Of Thanks at Martin Luther King.caInformational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Manganese
Manganese adds considerably to the tensile strength of steel,...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

Optical System And Electrical Circuit Of The Leeds & Northrup Optical Pyrometer
For extremely high temperature, the optical pyrometer is lar...

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

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

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

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

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

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

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

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

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

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

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

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

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

Lathe And Planer Tools
FORGING.--Gently warm the steel to remove any chill, is parti...

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...



Preparing Parts For Local Case-hardening






Category: CASE-HARDENING OR SURFACE-CARBURIZING

At the works of the Dayton Engineering Laboratories Company, Dayton,
Ohio, they have a large quantity of small shafts, Fig. 40, that
are to be case-hardened at A while the ends B and C are to
be left soft. Formerly, the part A was brush-coated with melted
paraffin but, as there were many shafts, this was tedious and great
care was necessary to avoid getting paraffin where it was not wanted.



To insure uniform coating the device shown in Fig. 41 was made.
Melted paraffin is poured in the well A and kept liquid by setting
the device on a hot plate, the paraffin being kept high enough
to touch the bottoms of the rollers. The shaft to be coated is
laid between the rollers with one end against the gage B, when
a turn or two of the crank C will cause it to be evenly coated.





Next: The Penetration Of Carbon

Previous: Preventing Carburizing By Copper-plating



Add to del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK


Viewed 2917