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Steel Making

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

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

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

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

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

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

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

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

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

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

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

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

Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Manganese
Manganese adds considerably to the tensile strength of steel,...

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...



Vanadium






Category: ALLOYS AND THEIR EFFECT UPON STEEL

Vanadium has a very marked effect upon alloy steels rich in chromium,
carbon, or manganese. Vanadium itself, when combined with steel very
low in carbon, is not so noticeably beneficial as in the same carbon
steel higher in manganese, but if a small quantity of chromium
is added, then the vanadium has a very marked effect in increasing
the impact strength of the alloy. It would seem that vanadium has
the effect of intensifying the action of chromium and manganese, or
that vanadium is intensified by the action of chromium or manganese.

Vanadium has the peculiar property of readily entering into solution
with ferrite. If vanadium contained is considerable it also combines
with the carbon, forming carbides. The ductility of carbon-vanadium
steels is therefore increased, likewise the ductility of chrome-vanadium
steels.

The full effect of vanadium is not felt unless the temperatures to
which the steel is heated for hardening are raised considerably.
It is therefore necessary that a certain amount of soaking takes
place, so as to get the necessary equalization. This is true of all
alloys which contain complex carbides, i.e., compounds of carbon,
iron and one or more elements.

Chrome-vanadium steels also are highly favored for case hardening.
When used under alternating stresses it appears to have superior
endurance. It would appear that the intensification of the properties
due to chromium and manganese in the alloy steel accounts for this
peculiar phenomenon.

Vanadium is also a very excellent scavenger for either removing
the harmful gases, or causing them to enter into solution with the
metal in such a way as to largely obviate their harmful effects.
Chrome-vanadium steels have been claimed, by many steel manufacturers
and users, to be preferable to nickel-chrome steels. While not
wishing to pass judgment on this, it should be borne in mind that
the chrome-vanadium steel, which is tested, is generally compared
with a very low nickel-chromium alloy steel (the price factor entering
into the situation), but equally good results can be obtained by
nickel-chromium steels of suitable analysis.

Where price is the leading factor, there are many cases where a
stronger steel can be obtained from the chrome and vanadium than
the nickel-chrome. It will be safe to say that each of these two
systems of alloys have their own particular fields and chrome-vanadium
steel should not be regarded as the sole solution for all problems,
neither should nickel-chromium.





Next: Manganese

Previous: Nickel-chromium



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