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Steel Making

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

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

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

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

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

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

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

Annealing Work
With the exception of several of the higher types of alloy s...

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

Gears
The material used for all gears on the Liberty engine was sel...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

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

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Manganese
MANGANESE is a metal much like iron. Its chemical symbol is M...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Making Steel Balls
Steel balls are made from rods or coils according to size, st...



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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