http://www.coredwire-cn.com from the ppt you will see a lot knowledge of the cored wire function in steel production

1. Alloy cored wire in
steel making
by Uray cored wire co.,ltd
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2. History
• Cored wire injection treatment technology
has been introduced in steel makeing
process for more than 40years.
• Now it comes to be proved as a mature
technology to improve steel quality
according to various of demand, as well as
many other advantages compare with the
older treatment.
• Cored wire injection is replaced the lance
powder injection and is popular applied in
steel making production worldwide.
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3. Cored Wire feeding process
• By using the cored wire feeding machine,
the cored wire is injected into the bottom of
the ladle, the injection speed can be
adjusted according to specific requirement.
• In order to precisely control the composition
of the metal .The alloy powder contained in
the cored wire will be dispersed and react
with the steel liquid.
• In this way, the ladle treatment will be
achieved, such as:Micro alloying,
machinability improvement, deoxidizing,
desulfurizing.
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4. Most used cored wire products
• The mixture of alloy powders are calculated and then metered
fabricated into a tubular wire during fabricated process
outside covered by low carbon steel sheath.The cored wire
diameter, according to different type of feeding machine,
mainly are 13 mm.
• For the quality of cored wire, the main parameters are the
chemical composition and the uniform weight of the
powder.no weak line, no leaking powder,.
• The cored wire can be classified according to the chemical
powder inside, such as, pure calcium cored wire, calcium
silicon cored wire, ferro titanium cored wire, carbon cored
wire, sulphur cored wire, Nitride chromium cored wire, etc.
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5. The function of cored wire
• The specific cored wire products are used
according to different requirement of ladle
treatment in steel making. Followings are some
explanation.
• Calcium treatment mainly applied for dexoidizing
and modifying the inclusions, in a result, it improves
the steel castability and cleanliness. In this case,
pure calcium cored wire, or calcium silicon cored
can be used. Silicon itself is a nice deoxidant as well
as ferrite strengthen.
• Desulphurisation treatment are mainly used
Magnesium cored wire to get the high efficiency
with low cost. http://www.coredwire-cn.com 5

6. The function of cored wire
• Micro alloying treatment mainly used ferro boron cored wire,
ferron titanium cored wire. Titanium element are used as the
stable modifier to neutralize the harmful effects.
• Carbon cored wire is used to adjust the carbon content of the
steel to improve the steel hardness and tensile strength.
• Nitride Chromium cored wire are used to to increase the steel
hardernability..
• Sulphur cored wire are used to improve the steel
machinability as chip-breaker, some special surface
treatment also need sulphur.
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7. • The different amount of cored wire
chemicals react different in steel
liquid, also different chemical
combined act different.
• In order to get the expected steel
quality, the added chemicals together
with their amount should be calculated
carefully. So cored wire
quality(accurate and uniform chemical
powder) and injection feeding are
important.
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8. The advantage of cored wire feeding
technology
• Cored wire feeding system has many
advantage, different cored wire
products used for different ladle
treatment to achieve the specific steel
quality. The followings are some of the
cored wire injection system
advantages:
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9. The advantage of cored wire feeding
technology
• achieve higher steel yield,reduce production
cost.
• environment friendly, less pollution, less
fuel.
• control the additive chemicals
speciously,easily control the steel quality
• easy to install the injection system, very low
investment.
• minimize the temperature loss.
• less slag clogging.
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10. • In the following 20years, the cored
wire injection technology will still be
the most ecnomic, high efficient
method in secondary steel metallurgy.
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11. Thank you!
More information,kindly visit:
www.coredwire-cn.com
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