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Steel Making

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

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

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

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

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

Critical Points
One of the most important means of investigating the properti...

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

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

Drop Forging Dies
The kind of steel used in the die of course influences the he...

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

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

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

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



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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