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Rare earth ferrosilicon alloy nodularizer series

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1.The brand and chemical composition of yttrium-based rare earth spheroidizing agent for FD series wind turbine are shown in Label 1:

 

I. Characteristics of the product and Application Range

1. This product has an outstanding capacity of anti-nodularization degeneration, anti-distortion of graphite, anti-interferential elements. Used together with mating inoculant of the company, it can ensure that the area of the section is larger than 180mm, the nodularization of the bulk department is within 3 degree, the number of graphite balls is more than 200 /mm2nodularization rate is higher than 85.Besides, it can increase both the resistance to low temperature impact on toughness and the tensile strength values.

2. By adopting special techniques and high-purity raw material, it is very little interferential microelements and the purity is high.

3. The range of residual rare earth is wider than that of common rare earth spheroidizer. It has the advantage of small white mouth and simplifies the forced cooling process such as adding chillers.

 

Label 1

trademark

chemical composition / %

Scope of application

REO*

Mg

Ca

Ba

Bi/Sb

Si

Fe

FD-1

2.0-2.5

6.5-7.5

   ≤3    ≤3

0.1-0.5

44-48

Balance

QT400-18L

QT350-22L

FD-2

1.5-2.0

6.0-7.0

   ≤3    ≤3

0.1-0.5

44-48

Balance

FD-3

0.5-1.5

6.0-7.0

   ≤3    ≤3

0.1-0.5

44-48

Balance

FD-4

2.0-2.5

6.5-7.5

   ≤3    ≤3

0.1-0.5

44-48

Balance

QT 700-2A

FD-5

1.5-2.0

6.0-7.0

   ≤3    ≤3

0.1-0.5

44-48

Balance

FD-6

0.5-1.5

6.0-7.0

   ≤3    ≤3

0.1-0.5

44-48

Balance

 

 

2.The grades and chemical composition of yttrium-based rare earth spheroidizing agent for DY series thick section castings are shown in Label 2:

 

I. Characteristics of the product and Application Range

1.Compared with like products of light rare-earth, this product possesses the characteristics as follows: the capacity of anti-fading, anti-distortion of graphite, anti-interferential elements, without worry about nodularization degeneration,the properties of castings are exactly the same as supposed to be, it can be applied as raw material in a wide range and there is no resulfurization, it can reduce and diffuse phosphor eutectic, etc.

2.At present, it is an ideal nodulizer to solve the difficult international casting problem caused by fading: the quality of heavy section castings is not high, especially the quality of bulk component is not high and unstable, and low yield.

3.The product is applied to the production of superheavy-section castings. The treatment process is basically the same as that of light rare-earth nodulizer. It’s suitable for iron liquid of the temperature of 1400ºc-1550ºc, and ordinarily pour-over nodularization, the adding amount is 1.0-1.8% (it depend on the content of impurity in the liquid iron ), after the nodulizer being packaged, cover it with ferrosilicon or iron fillings, iron plate above, there is no need to take special desulphurization and cooling measures. After the ball reaction, there is no phenomenon of ball recession, and nodularization rate is higher than 80%, and the roundness degree of graphite is fine.

 

Label 2

trademark

chemical composition  / %

Scope of application

REO*

Mg

Ca

Ba

Bi/Sb

Si

Fe

DY-1

6.0-8.0

7.0-9.0

≤2

≤5

≤0.5

41-45

Balance

Cupola molten iron with high impurity content

DY-2

3.5-5.0

7.0-9.0

  ≤2

≤3

≤0.5

42-46

Balance

Cupola molten iron for ferrite parts

DY-3

3.5-5.0

7.0-9.0

  ≤2

≤3

≤0.5

42-46

Balance

Pearlite parts cupola molten iron

DY-4

3.0-4.0

6.0-8.0

  ≤2

≤3

≤0.5

42-46

Balance

Ferrite parts electric furnace molten iron

DY-5

3.5-4.5

6.0-8.0

  ≤3

≤3

≤0.5

42-46

Balance

Pearlite parts electric furnace molten iron

DY-6

2.0-3.0

6.0-8.0

  ≤3

≤3

≤0.5

44-48

Balance

Low impurity content of ferrite parts, electric furnace molten iron

DY-7

2.0-3.0

6.0-8.0

  ≤3

≤3

≤0.5

44-48

Balance

Low impurity content of pearlite parts, electric furnace molten iron

DY-8

0.5-1.5

6.0-8.0

  ≤3

≤3

≤0.5

44-48

Balance

As-cast high toughness ductile iron and high purity molten iron

 

 

3.The brand and chemical composition of the yttrium-based composite rare earth spheroidizing agent for ZY series medium-sized castings are shown in Label 3:

 

I. Characteristics of the product and application
1.This product has a relatively strange capacity of anti-nodularization degeneration, anti-graphite distortion and anti-interferential elements and strong capacity of ball reaction.

2.There is no need to worry about nodularization degeneration. We can easily produce real high-quality under existing working conditions. It can be widely used in heavy section (section > 80mm) casting production. Its processing technology is basically the same as that of light rare-earth nodulizer. It’s suitable for iron liquid of the temperature of 1400℃ -1550℃, ordinary pour-over process, with adding amount 1.0-1.8% (depend on the level of impurity content of the iron liquid ), after packaging the nodulizer, cover it with ferrosilicon or iron fillings, iron plate above, there is no need to take special desulphurization and cooling measures. After the ball reaction, in general cases, we can guarantee nodularization grade above grade 3 within 2.5 hours.

3.The nodularization rate is high, the graphite ball number is large, and the roundness degree is fine.

 

Label 3

trademark

chemical composition  / %

Scope of application

REO*

Mg

Ca

Ba

Bi/Sb

Si

Fe

ZY-1

5.5-6.5

8.0-10

   ≤3

≤2

≤0.5

41-45

Balance

Cupola hot metal with high impurity content

ZY-2

4.5-5.5

7.0-9.0

   ≤3

≤2

≤0.5

41-45

Balance

Ferritic Cupola Hot Metal

ZY-3

4.5-5.5

7.0-9.0

   ≤3

≤2

≤0.5

41-45

Balance

Pearlitic Cupola Hot Metal

ZY-4

2.5-3.5

6.0-8.0

   ≤3

≤2

≤0.5

42-46

Balance

Ferrite electric furnace hot metal

ZY-5

2.5-3.5

6.0-8.0

   ≤3

≤2

≤0.5

42-46

Balance

Pearlite electric furnace hot metal

ZY-6

1.0-2.0

6.0-8.0

   ≤3

≤2

≤0.5

44-48

Balance

Low ferrite impurity molten iron in electric furnace

ZY-7

1.5-2.5

6.0-8.0

   ≤3

≤3

≤0.5

44-48

Balance

Low pearlite impurity molten iron in electric furnace

 

4. XY-Series Yttrium-based Heavy Rare-earth Compoud Nodulizer Used in High Quality Castings,for details see in the Label 4 as below,

 

I. Characteristics of the product

1. The chemical composition is uniform and stable.

2. The product has high alloy purity,and low magnesium oxide content.

3. The raw material has a wide range of adaptability and is designed to solve the problem of abnormal nodularization.

4. The nodularization quality of castings is consistent and there is no "sandwich" phenomenon.

                                                                               

 Label 4

Trademark

Chemical Compositions / %

 

RE0*

Mg

Ca

Ba/Bi/Sb

Si

Fe

XY-H

0.3-0.6

5.8-6.8

1.5-2.5

Slight

43-47

 Balance 

XY-1

1.0-3.0

6.0-7.0

1.0-2.0

  Slight

42-46

  Balance 

XY-2

1.0-3.0

6.0-7.0

2.0-3.0

  Slight

42-46

  Balance 

XY-3

2.0-3.0

6.0-7.0

1.5-3.0

  Slight

42-46

  Balance 

XY-4

2.0-3.0

7.0-8.0

1.5-3.0

  Slight

42-46

  Balance 

XY-5

4.5-5.5

7.0-8.0

1.0-2.0

  Slight

41-45

  Balance 

 

 

5. Physical state:

1.The section of the products should be silver and gray;
2.Product grain size range is 5-30mm, the products whose grain is smaller than 5mm and greater than 30mm won’t exceed 5% of total amount;
3.If the demanding party has special demands on chemical composition and grain size, we can consult separately.      

 

6. Packaging, marking and quality assurance:

1.Packaged in liner standard double-layer plastic woven bags, The net weight is 25kg/ bag;

2.The packaging should have clear product name and quantity mark. We give quality certificate that is consistent with requirements and products.

 

Remarks:All of information are  for you reference purpose only as above.

 

 

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