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Steel Making

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

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

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

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

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

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

Mushet And Bessemer
That Mushet was "used" by Ebbw Vale against Bessemer is, perh...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

Furnace Data
In order to give definite information concerning furnaces, fu...

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

Double Annealing
Water annealing consists in heating the piece, allowing it to...

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

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

Conclusions
Martien was probably never a serious contender for the honor ...

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

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

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Separating The Work From The Compound
During the pulling of the heat, the pots are dumped upon a ca...

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

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...



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.





Next: Lathe And Planer Tools

Previous: For Milling Cutters And Formed Tools



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