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Metallurgical Cored Wires

With a history of production for Speciality & Treatment Alloys having its application in Special Steel Treatment & Foundry Industry, NPPL has further expanded into manufacturing ofMetallurgical Cored Wires forthe Steel & Foundry Industry Worldwide. NPPL has a complete background with majority ofthe major raw material for Cored Wire Production being produced at our own melting facility, thus giving us insights into quality sourcing & technical advantages and catering to individual specifictailored requirements ofour customers. Spread over an area of 20,000 square meters, the dedicated plant has a capacityto manufacture more than 1200 mt cored wire monthlyforsteel &foundry application in its first stage.

Preview on typical Cored Wires & their purpose of application:

Product Material Description & Application
CaSi Cored Wire (CaSi) Calcium—Silicon (Ferro Silicon or Calcium Silicide) Added In Silicon Steel Production For High Calcium
Solid Calcium (Ca) Cored Wire Pure Solid Calcium Metal Added to Silicon Restricted Steel Production For Ultra High Calcium Metal Yields In Molten Steel
CaFe Cored Wire (CaFe) Calcium & Iron Added In Low Silicon Steel Production For Modification & High Calcium Yields
CaAlFe Cored Wire Calcium -Aluminium & Iron Added to Low Or Restricted Silicon Steel Production for Higher Calcium Yields & Modification
Carbon (C) Cored Wire Pure Graphite Carbons Added to Molten Steels For Trimming Proportions
FeMn Cored Wires (LC/ MC Mn) Low-Medium Carbon Ferro Manganese Added By Alloy Steels & Foundries for Manganese Yields in Molten Metal
FeTi Cored Wire (FeTi) Ferro Titanium Added to Alloy Steel For Microalloying & Deoxidation
(FeSng) Cored Wire Ferro Silicon Magnesium & Rare Earths Used By Ductile Iron Foundries for Nodularisation & DeSulphurisation of Castings
(Mg) Cored Wire Pure Magnesium Metal (Granules) Used By Ductile Iron Foundries for Nodularisation & DeSulphurisation of Castings
Inoculation Cored Wire Silicon Based lnoculants with Rare Earths; Strontium; Zirconium Used By Foundries for Inoculation
Others Various Other Cored Wires are Produced as Per Requirements: Ferro Boron; Ferro Aluminium; Nitrated Manganese; Lead; Nickel Magnesium; & Others
  1. Wire diameter : 9mm, 13mm, 16mm & others

Calcium Silicide (CaSi) Cored Wire

Calcium Silicide Cored Wires are Added In Silicon Steel Production For High Calcium Metal Yields in Molten Steel With the Purpose of Deoxidation; DeSulphurization & Inclusion Modification of the Steel. The Purpose of Using CaSi Wire is to Obtain Higher Yields of Ca in Molten Steel as compared to Conventional Method of Adding CaSi Lumps at Bottom of Ladle, which have much Lower Density (2.5gm/cc).

Composition of CaSi Granules

GRADES FeSi Ca 28% FeSi Ca 30% FeSi Ca 32%
CA: 28 - 31% 30 - 33% 32 - 34%
SI: 55 - 65% 55 - 65% 55 - 65%
AL (Max): 1.50% 1.50% 1.50%
C: 1% 1% 1%
S: 0.05% 0.05% 0.05%
P: 0.06% 0.06% 0.06%
Fe: Balance Balance Balance

Coil Specifications

Cored Wire Diameter 9mm 13mm 16mm
Powder Wt. 1000 Kg 1000 Kg 1000 Kg
Strip Wt. 980 Kg 630 Kg 710 Kg
Net Wt. 1980 Kg 1630 Kg 1710 Kg
Length (Mtrs) 9250 Mtr 4337 Mtr 2631 Mtr
Internal Diameter 650 MM 650 MM 650 MM
External Diameter 1090 MM 1200 MM 1230 MM
Height 900 MM 900 MM 900 MM

Wire Specifications

Diameter (mm) Shape Powder Fill(Gms/ mt)
9 (+/- 0.5)mm Round 105 (+/- 10)
13 (+/- 0.2)mm Round 230 (+/- 10)
16 (+/- 0.2)mm Round 390 (+/- 10)

Strip Specifications

Grade Diameter (mm) Thickness (mm)
EDD IS-513 9 +/- 0.5 0.30 - 0.35 +/- 0.03
13 +/- 0.2 0.30 - 0.35 +/- 0.03
16 +/- 0.2 0.35 - 0.40 +/- 0.03

Powder Specifications

  1. Density(gm/cc) :2.5 - 2.7 gm/cc
  2. Melting Point : 1030 - 1200 Celcius
  3. Size (mm) : -1.4 + 0.025

Other Specifications

  1. Flipping Coil:Horizontal & Vertical
  2. Packing:In Flipping Cage Mounted On Wooden/ Mild Steel Pallet; Stretch Wrapped
  3. Storage:In Cool; Dry & Covered Area
  4. Markings:Labels ; Stickers

Ca Treatment Benefits

  1. Improved Surface Quality & Steel Castability In Continuous Casting Process.
  2. Improved Mechanical Property of Machinability at High Cutting Speeds.
  3. Excellent Affinity Towards Oxygen & Sulphur thereby excellent Metal for Internal Slag Removing thereby Increasing Quality of Steel.

Solid Calcium (Ca) Cored Wire

Solid Calcium Cored Wire helps in Reduction of Overall Ca Treatment Costs, as Ca Levels Attained by Using This is in Range Between 20-30% for Al; Al-Si & Si Kilned Steel- Compared to 13-19% for Conventional CaSi/ CaFe Treatments. Also Zero Gas Pick-up During Wire Injection in Molten Steel & Lower Mg Content Helps in Reduced Splashing & Fuming.

Composition of CaFe Granules

GRADES CA PURE
CA: 99%
MG: 0.03%
AL (Max): NIL
CU: 0.01%
S: NIL
K + NA: 0.07%/td>
Fe: 0.01%

Coil Specifications

Cored Wire Diameter 9mm
Powder Wt. 500 Kg
Strip Wt. 2400 Kg
Net Wt. 2900 Kg
Length (Mtrs) 10000 Mtr
Internal Diameter 650 MM
External Diameter 1200 MM
Height 900 MM

Wire Specifications

Diameter (mm) Shape Powder Fill(Gms/ mt)
9 (+/- 0.2)mm Round 50 (+/- 5)

Strip Specifications

Grade Diameter (mm) Thickness (mm)
EDD IS-513 9 +/- 0.5 0.70 +/- 0.03

Powder Specifications of Calcium Wire

  1. Density(gm/cc) :68 - 70 gm/cc
  2. Melting Point : 840 - 845 Celcius
  3. Size (mm) : 9 mm

Other Specifications

  1. Flipping Coil:Horizontal & Vertical
  2. Packing:In Flipping Cage Mounted On Wooden/ Mild Steel Pallet; Stretch Wrapped
  3. Storage:In Cool; Dry & Covered Area
  4. Markings:Labels ; Stickers

Solid Ca Cored Wire Is Introduced during End of Refining Process just Before CCM; With Wire Injection Speed in Range of 110-140 Meters/ Minute. Typical Addition is in range of 0.05-0.08 Kg/ Ton of Liquid Steel & Ca Level Attained in Liquid Steel with above rate of Addition Should be 15-30 PPM.

Calcium Iron (CaFe) Cored Wire

Calcium Iron Cored Wires are Added In Low Silicon Steel Production For High Calcium Metal Yields in Molten Steel With the Purpose of Deoxidation; DeSulphurization & Inclusion Modification of the Steel. Typically Used for Treatment of Aluminium Kilned Steel. This Cored Wire is a Physical Blend of Pure Calcium Metal Granules and Pure Iron Granules in Desired Ratio.

Composition of CaFe Granules

GRADES CaFe 20% CaFe 30%
CA: 20% 30%
SI: NIL NIL
AL (Max): NIL NIL
C: 0.10% 0.10%
S: 0.03% 0.03%
P: 0.03% 0.03%
Fe: Balance Balance

Coil Specifications

Cored Wire Diameter 13mm
Powder Wt. 1200 Kg
Strip Wt. 700 Kg
Net Wt. 1900 Kg
Length (Mtrs) 4400 Mtr
Internal Diameter 650 MM
External Diameter 1200 MM
Height 900 MM

Wire Specifications

Diameter (mm) Shape Powder Fill(Gms/ mt)
13 (+/- 0.2)mm Round 280 (+/- 10)

Strip Specifications

Grade Diameter (mm) Thickness (mm)
EDD IS-513 9 +/- 0.5 0.30 - 0.35 +/- 0.03
13 +/- 0.2 0.30 - 0.35 +/- 0.03
16 +/- 0.2 0.35 - 0.40 +/- 0.03

Powder Specifications

Density(gm/cc) Melting Point Size (mm)
Calcium 1.54 gm/cm3 840 - 845 Celcius -1.4 + 0.025
Iron Powder 3.00 gm/cm3 1530 Celcius -1.4 + 0.025

Other Specifications

  1. Flipping Coil:Horizontal & Vertical
  2. Packing:In Flipping Cage Mounted On Wooden/ Mild Steel Pallet; Stretch Wrapped
  3. Storage:In Cool; Dry & Covered Area
  4. Markings:Labels ; Stickers

Ca Treatment Benefits

  1. Improved Surface Quality & Steel Castability In Continuous Casting Process.
  2. Improved Mechanical Property of Machinability at High Cutting Speeds.
  3. Excellent Affinity Towards Oxygen & Sulphur thereby excellent Metal for Internal Slag Removing thereby Increasing Quality of Steel.
  4. Reduces Caster Nozzle Clogging.

CARBON (C) CORED WIRE

Grade Powder Chemical Composition (%)
C 98 C (Min) S (Max) V.M (Max) Ash (Max) Moist. (Max)
98 1 0.5 1 0.5

Powder Specification

Grade Density(gm/cc) Melting Point Boiling Point Size (mm)
C-98 3.15 3800 Celcius 3850 Celcius -1.445

Strip Specification

Grade Diameter (Ɵ, mm) Thickness (mm)
EDD IS - 513 13 0.40 ± 0.03

Wire Characteristics

Grade Diameter (mm) Shape Powder Fill (gms/mt)
C - 98 13±0.2 Round 135 ± 10

Coil Specification (Filpping Coil - Horizontal & Vertical)

Details 13 mm
500 650
Powder Weight (MT) 0.5 0.65
Strip Weight (MT) 0.55 0.72
Net Weight (MT) 1.07 1.37
Length (mtrs) 3703 4444
Internal Diameter (mm) 650 650
External Diameter (mm) 1120 1200
Height (mm) 900 900

Application:

  1. Used as an Trimming Addition to Add & Adjust the Carbon Content in Molten Steel. Recoveries of More than 90% are Typically Observed when carried out at Temperatures of around 1560-1580 Degree Celsius.

Packing:

  1. Packing In Flipping Cage Mounted on Steel Pallet; Horizontally or Vertically; Dully Shrink Wrapped & Strapped.

Ferro Silicon Magnesium (FeSiMg) Cored Wire
Cored Wires for Iron Foundries

Mg-FeSi Cored Wires are a major Addition to Ductile Iron Foundries Focusing on Improved Recoveries of Mg; Reduced Fumes & Automation for Ladle Inoculation & Spheroidization. Ease Of Operation (Magnesium Addition) into Melt, Along with Higher Recoveries & Precise Control of Process Makes Mg-FeSi Cored Wires Apt for Usage in Todays Modern & Efficient Foundries.

GRADE CHART

GRADES MG SI AL (Max) Re Ca Others (Max Fe
MG 20 20-22% 45-46% 0.80 % 1 - 3 % 1 - 3 % 1 % Balance
MG 30 30-32% 25-33% 0.80 % 0.6 - 3% 1 - 3 % 1 % Balance
MG 40 38-42% 22-30% 0.80 % 0.6 - 3% 1 - 3 % 1 % Balance
MG 50 50-52% 25-30% 0.80 % 1 - 3.5 % 1 - 3 % 1 % Balance
MG 80 78-82% 7-12% 0.80 % 1 - 3.5 % 1 - 3 % 1 % Balance

Powder Specifications

Material Density(gm/cc) Melting Point Boiling Point Size (mm)
FeSiMg 4.3 - 4.8 920 - 1200 - -1.4 + 0.3
Fe 7.8 1540 2860 -0.6 + 0.045
Si 2.4 1412 3270 -1.4 + 0.2
Mg 1.74 650 1090 -1.4 + 0.2

Wire Specifications

Diameter (mm) Shape Thickness
9 (+/- 0.2)mm Round 0.4mm (+/- 0.03)
13 (+/- 0.2)mm Round 0.4mm (+/- 0.03)

Cored Wire & Coil Specification

Grade 20 30 40 50 80
Powder Fill (Grams/ Mtr) 120 +/- 10 110 +/- 10 100 +/- 10 95 +/- 10 70 +/- 10
Powder Wt 500 Kg 500 Kg 500 Kg 500 Kg 500 Kg
Strip Wt 505 Kg 595 Kg 640 Kg 695 Kg 850 Kg
Net Wt 1005 Kg 1095 Kg 1140 Kg 1195 Kg 1350 Kg
Length 4166 Mtr 4545 Mtr 5000 Mtr 5555 Mtr 7142 Mtr
Internal Dia: (D1) 650 MM 650 MM 650 MM 650 MM 650 MM
External Dia: (D2) 1000 MM 1050 MM 1050 MM 1080 MM 1200 MM
Height: (A) 630 MM 630 MM 630 MM 630 MM 630 MM

Other Specifications

  1. Flipping Coil:Horizontal & Vertical
  2. Packing:In Flipping Cage Mounted On Wooden/ Mild Steel Pallet; Stretch Wrapped
  3. Storage:In Cool; Dry & Covered Area
  4. Markings:Labels ; Stickers
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