VIEW THE MOBILE VERSION of www.steelmaking.ca Informational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Pyrometry And Pyrometers
A knowledge of the fundamental principles of pyrometry, or th...

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

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

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

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

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

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

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

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

Alloying Elements
Commercial steels of even the simplest types are therefore p...

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

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

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

Chromium
Chromium when alloyed with steel, has the characteristic func...

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

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...



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 2860