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Rare earth spheroidizing agent series products

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

Table 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

margin

QT400-18L

QT350-22L

FD-2

1.5-2.0

6.0-7.0

   ≤3    ≤3

0.1-0.5

44-48

margin

FD-3

0.5-1.5

6.0-7.0

   ≤3    ≤3

0.1-0.5

44-48

margin

FD-4

2.0-2.5

6.5-7.5

   ≤3    ≤3

0.1-0.5

44-48

margin

QT 700-2A

FD-5

1.5-2.0

6.0-7.0

   ≤3    ≤3

0.1-0.5

44-48

margin

FD-6

0.5-1.5

6.0-7.0

   ≤3    ≤3

0.1-0.5

44-48

margin

 

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

Table 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

margin

Cupola molten iron with high impurity content

DY-2

3.5-5.0

7.0-9.0

  ≤2

≤3

≤0.5

42-46

margin

Cupola molten iron for ferrite parts

DY-3

3.5-5.0

7.0-9.0

  ≤2

≤3

≤0.5

42-46

margin

Pearlite parts cupola molten iron

DY-4

3.0-4.0

6.0-8.0

  ≤2

≤3

≤0.5

42-46

margin

Ferrite parts electric furnace molten iron

DY-5

3.5-4.5

6.0-8.0

  ≤3

≤3

≤0.5

42-46

margin

Pearlite parts electric furnace molten iron

DY-6

2.0-3.0

6.0-8.0

  ≤3

≤3

≤0.5

44-48

margin

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

margin

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

margin

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

 

 

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

table 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

margin

Cupola hot metal with high impurity content

ZY-2

4.5-5.5

7.0-9.0

   ≤3

≤2

≤0.5

41-45

margin

Ferritic Cupola Hot Metal

ZY-3

4.5-5.5

7.0-9.0

   ≤3

≤2

≤0.5

41-45

margin

Pearlitic Cupola Hot Metal

ZY-4

2.5-3.5

6.0-8.0

   ≤3

≤2

≤0.5

42-46

margin

Ferrite electric furnace hot metal

ZY-5

2.5-3.5

6.0-8.0

   ≤3

≤2

≤0.5

42-46

margin

Pearlite electric furnace hot metal

ZY-6

1.0-2.0

6.0-8.0

   ≤3

≤2

≤0.5

44-48

margin

Low ferrite impurity molten iron in electric furnace

ZY-7

1.5-2.5

6.0-8.0

   ≤3

≤3

≤0.5

44-48

margin

Low pearlite impurity molten iron in electric furnace

 

four. The brand and chemical composition of TZ series of high-quality special nodulizers for medium and small castings are shown in Table 4:

Table 4

trademark

chemical composition / %

REO*

Mg

Ca

Si

other

Fe

TZ-1

0.5-1.5

6.0-<7.0

1.5-3.0

44-48

Right amount margin

TZ-2

0.5-1.5

7.0-8.0

1.5-3.0

44-48

Right amount margin

TZ-3

1.0-3.0

6.5-<7.5

1.5-3.0

44-48

Right amount margin

TZ-4

1.0-3.0

7.5-8.5

1.5-3.0

44-48

Right amount margin

 

 

Fives. The grades and chemical composition of QY series light rare earth spheroidizing agent are shown in Table 5:

table 5

trademark

chemical composition / %

Scope of application

RE0

Mg

Sb/Bi/Ba

Ca

Si

Fe

QY-H

0.3-0.6

6.0-7.0

Right amount

1.5-2.5

42-47

margin Low impurity electric furnace molten iron

QY-1

1.0-3.0

5.5-6.5

Right amount

1.0-2.0

42-46

margin

Low ferrite impurity molten iron in electric furnace

QY-2

1.0-3.0

5.5-6.5

Right amount

1.0-2.0

42-46

margin Low pearlite impurity molten iron in electric furnace

QY-3

1.0-3.0

5.5-6.5

Right amount

1.0-2.0

42-46

margin Mixed matrix impurity low electric furnace molten iron

QY-4

3.5-5.5

6.5-7.5

Right amount

1.0-2.0

41-45

margin Ferrite electric furnace molten iron

QY-5

3.5-5.5

6.5-7.5

Right amount

1.0-2.0

41-45

margin Pearlite electric furnace molten iron

QY-6

3.5-5.5

6.5-7.5

Right amount

1.0-2.0

41-45

margin Mixed matrix electric furnace molten iron

 

 

six. The particle size range of the product is 5mm~25mm, 5mm~30mm, 8mm~40mm, 10mm~45mm.

 

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