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Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

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

Compensating Leads
By the use of compensating leads, formed of the same materia...

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

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

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

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

Effect Of Different Carburizing Material
[Illustrations: FIGS. 33 to 37.] Each of these different p...

Nickel
Nickel may be considered as the toughest among the non-rare a...

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

Hardness Testing
The word hardness is used to express various properties of me...

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

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

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

Heat Treatment Of Gear Blanks
This section is based on a paper read before the American Gea...

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

Piston Pin
The piston pin on an aviation engine must possess maximum res...



Instructions For Working High-speed Steel






Category: HIGH-SPEED STEEL

Owing to the wide variations in the composition of high-speed steels
by various makers, it is always advisable to follow the directions
of each when using his brand of steel. In the absence of specific
directions the following general suggestions from several makers
will be found helpful.

The Ludlum Steel Company recommend the following:

CUTTING-OFF.--To cut a piece from an annealed bar, cut off with
a hack saw, milling cutter or circular saw. Cut clear through the
bar; do not nick or break. To cut a piece from an unannealed bar,
cut right off with an abrasive saw; do not nick or break. If of
large cross-section, cut off hot with a chisel by first slowly
and uniformly heating the bar, at the point to be cut, to a good
lemon heat, 1,800 deg.-1,850 deg.F. and cut right off while hot; do not nick
or break. Allow the tool length and bar to cool before reheating
for forging.





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