34002621
Descripción
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High Strength Steels
- Are distinguished
from conventional
steels by their high
tensile strength
and high elastic
limit.
- are alloys of iron
and carbon that
contain the BCC
crystalline
structure at room
temperature.
- The main advantages
of high strength steels
are their extremely
high strengths and
stiffness.
- are alloys of iron
and carbon that
contain the BCC
crystalline
structure at room
temperature.
- Microalloyed steels
- they are
obtained by
adding, in small
amounts,
elements such as
titanium,
vanadium or
niobium, which
replace iron
atoms in the
crystalline matrix
of the steel,
increasing the
resistance levels.
- Refosphorous steels
- Its hardening is achieved
by the use of solid
elements, such as
phosphorus, in a
percentage of around
0.12%.
- One of its main
characteristics is that it
facilitates drawing and
surface appearance.
- One of its main
characteristics is that it
facilitates drawing and
surface appearance.
- Its hardening is achieved
by the use of solid
elements, such as
phosphorus, in a
percentage of around
0.12%.
- Refosphorous steels
- they are
obtained by
adding, in small
amounts,
elements such as
titanium,
vanadium or
niobium, which
replace iron
atoms in the
crystalline matrix
of the steel,
increasing the
resistance levels.
- Thermoset steels
- known as bake
hardening,
provides a gain
in its tensile
strength and
elastic limit,
thereby
reducing the
thickness
without loss of
strength.
- Gap Free Steels (IF)
- Its hardening is
due to the solid
solution of
manganese,
silicon and
phosphorus in the
ferrite. heir high
mechanical
resistance ensures
good resistance to
fatigue and
shocks
- Its hardening is
due to the solid
solution of
manganese,
silicon and
phosphorus in the
ferrite. heir high
mechanical
resistance ensures
good resistance to
fatigue and
shocks
- Gap Free Steels (IF)
- known as bake
hardening,
provides a gain
in its tensile
strength and
elastic limit,
thereby
reducing the
thickness
without loss of
strength.
- Isotropic steels
- hey are a range of
steels in which a
good
conformation is
achieved
associated with
greater resistance
to biting.
- hey are a range of
steels in which a
good
conformation is
achieved
associated with
greater resistance
to biting.
- Steels by
induced plastic
transformation
(TRIP)
- They
present
breaking
stresses
greater
than 550
Mpa
- Multiphase steels
- This type of steels
has the same
properties as Double
Phase and TRIP
steels, additionally
incorporating small
amounts of niobium,
titanium and / or
vanadium, which
cause an increase in
resistance.
- This type of steels
has the same
properties as Double
Phase and TRIP
steels, additionally
incorporating small
amounts of niobium,
titanium and / or
vanadium, which
cause an increase in
resistance.
- Multiphase steels
- They
present
breaking
stresses
greater
than 550
Mpa
- Repair of high-strength
steel parts
- ts thickness is less, so the veneer rework must
be reduced to small and precise blows so as not
to cause overstretching of the material
- The techniques of direct hitting of
the hammer against the tas should
be avoided
- The techniques of direct hitting of
the hammer against the tas should
be avoided
- ts thickness is less, so the veneer rework must
be reduced to small and precise blows so as not
to cause overstretching of the material
- existing standards
- AISI/SAE, ISO, ASTM, UNE-AENOR, DIN, AFNOR, Norma BSI, Norma EN-CEN, ASME, Norma AWS,
- AISI/SAE, ISO, ASTM, UNE-AENOR, DIN, AFNOR, Norma BSI, Norma EN-CEN, ASME, Norma AWS,
- methods to identify the
different types of steel that
are manufactured.
- 4 or 5 digits are used
to designate the type
of steel.
- first digit: 1.-Carbón 2.-Níquel 3.-Níquel-Cromo 4.-Molibdeno 5.-Cromo 6.- Cromo-Vanadio 7.-Tungsteno
8.-Níquel-Cromo-Molibdeno 9.-Silicio-Magnesio
- Second Digit: It is a number that indicates the presence of other alloying elements.
- digits 3 and 4: Indicate the average content in hundredths of Carbon.
- When a letter is observed at the beginning of the digit, it indicates the process that was used to make the steel:
- A = Basic open hearth steel B = Bessemer carbon acid steel C = Basic steel of oxygen converters
D = Open hearth carbon acid steel E = Electric furnace steel
- A = Basic open hearth steel B = Bessemer carbon acid steel C = Basic steel of oxygen converters
D = Open hearth carbon acid steel E = Electric furnace steel
- first digit: 1.-Carbón 2.-Níquel 3.-Níquel-Cromo 4.-Molibdeno 5.-Cromo 6.- Cromo-Vanadio 7.-Tungsteno
8.-Níquel-Cromo-Molibdeno 9.-Silicio-Magnesio
- 4 or 5 digits are used
to designate the type
of steel.
- Maraging Steels
- are a class of high strength
steels with very low carbon
contents (0.030%
maximum) and additions
of substitutional alloying
elements that produce age
hardening of iron–nickel
martensites.
- are a class of high strength
steels with very low carbon
contents (0.030%
maximum) and additions
of substitutional alloying
elements that produce age
hardening of iron–nickel
martensites.
- Superficial treatments
- Chrome, Galvanized, Nickel plated, Blueing, Paint.
- Chrome, Galvanized, Nickel plated, Blueing, Paint.
- Rolling: A method used to produce elongated metal products of constant cross section.
- Forging: Process in which the shape of metals is modified by plastic deformation, subjecting the steel to repetitive impacts.
- tamping: The material acquires the shape of the stamp cavity.
- stuffing: it is a cold forming process
- stuffing: it is a cold forming process
- tamping: The material acquires the shape of the stamp cavity.
- Forging: Process in which the shape of metals is modified by plastic deformation, subjecting the steel to repetitive impacts.
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