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Steel Making

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

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

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

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

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

The Influence Of Size
The size of the piece influences the physical properties obta...

Impact Tests
Impact tests are of considerable importance as an indication ...

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

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

The Forging Of Steel
So much depends upon the forging of steel that this operation...

Testing And Inspection Of Heat Treatment
The hard parts of the gear must be so hard that a new mill f...

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

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

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

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

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

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

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

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



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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Previous: For Milling Cutters And Formed Tools



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