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Steel Making

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

Quenching
It is considered good practice to quench alloy steels from th...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

A Satisfactory Luting Mixture
A mixture of fireclay and sand will be found very satisfactor...

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

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

The Electric Process
The fourth method of manufacturing steel is by the electric f...

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

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

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

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

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

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

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

Air-hardening Steels
These steels are recommended for boring, turning and planing...

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

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

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

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



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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