"Oh Father," said a little Frog to the big one sitting by the side of a pool, "I have seen such a terrible monster! It was as big as a mountain, with horns on its head, and a long tail, and it had hoofs divided in two." "Tush, child, tush... Read more of The Frog and the Ox at Children Stories.caInformational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

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

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

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

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

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

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

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

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

Chrome-nickel Steel
Forging heat of chrome-nickel steel depends very largely on ...

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

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...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

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

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...



Heat Treatment Of Milling Cutters Drills Reamers Etc






Category: HIGH-SPEED STEEL

THE FIRE.--Gas and electric furnaces designed for high heats are
now made for treating high-speed steels. We recommend them for
treating all kinds of Blue Chip tools and particularly the above
class. After tools reach a yellow heat in the forge fire they must
not be allowed to touch the fuel or come in contact with the blast
or surrounding air.

HEATING.--Tools of this kind should be heated to a mellow white
heat, or as hot as possible without injuring the cutting edges
(2,000 to 2,200 deg.F.). For most work the higher the heat the better
the tool. Where furnaces are used, we recommend preheating the
tools to a red heat in one furnace before putting them in a white
hot furnace.

COOLING.--We recommend quenching all of the above tools in oil
when taken from the fire. We have found fish oil, cottonseed oil,
Houghton's No. 2 soluble oil and linseed oil satisfactory. The
high heat is the important thing in hardening Blue Chip tools.
If a white hot tool is allowed to cool in the open air it will be
hard, but the air scales the tool.

DRAWING THE TEMPER.--Tools of this class should be drawn considerably
more than water-hardening steel for the same purpose.





Next: Heat Treatment Of Punches And Dies Shears Taps Etc

Previous: Heat Treatment Of Lathe Planer And Similar Tools



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 3197