Mg

RE

Si

Ca

Ba

Al

Fe

Sulfur Content in Original Molten Iron（%）

Scope of Application

JDQ-1

5.5-6.5

0.5-1.0

42-46

1.0-3.5

Appropriate amount

<0.8

Remainder

≤0.02%

Low-Temperature Ductile Iron

Low Interfering Elements in Original Molten Iron

JDQ-2

5.5-6.5

1.5-2.5

42-46

1.0-3.5

Appropriate amount

<0.8

Remainder

≤0.02%

Hot-Temperature Molten Iron

Thin-Walled Ductile Iron

JDQ-3

6.0-7.0

1.5-2.5

42-46

1.5-3.5

Appropriate amount

<0.8

Remainder

≤0.03%

Ductile Iron With General Wall Thickness

JDQ-4

6.5-7.5

1.5-2.5

42-46

1.5-3.5

Appropriate amount

<0.8

Remainder

≤0.03%

Ductile Iron with Larger Wall Thickness

JDQ-5

6.5-7.5

0.5-1.5

42-46

2.0-3.5

Appropriate amount

<0.8

Remainder

≤0.03%

Large-Section Ductile Iron

JDQ-6

7-8.5

3.0-4.0

42-46

2.0-4.0

Appropriate amount

<0.8

Remainder

≤0.06%

High Interfering Elements in Original Molten Iron

Mg

La

Si

Ca

Ba

Al

JDQ-L1

5.5-6.5

0.1-0.4

40-46

2.0-3.5

Appropriate amount

<0.8

The content of MgO in the spheroidizing agent is less than 10% of the Mg content.

It improves the roundness of graphite spheres, reduces the tendency of white cast iron, and decreases the shrinkage porosity defects.

It is suitable for thin-walled ductile iron castings.

JDQ-L2

5.5-6.5

0.4-0.6

40-46

2.0-3.5

Appropriate amount

<0.8

JDQ-L3

6.5-7.5

0.6-1.0

40-46

2.0-3.5

Appropriate amount

<0.8

Mg

RE(Y)

Si

Ca

Ba

Al

JDQ-Y1

5.5-6.3

0.3-0.6

43-48

0.5-1.5

Appropriate amount

<0.8

The content of MgO in the spheroidizing agent is less than 10% of the Mg content.

The reaction is stable and has strong anti-decay ability, effectively preventing the formation of fragmented graphite.

It is suitable for large-section ductile iron castings.

JDQ-Y2

5.8-7.5

0.8-1.5

43-48

1-2.5

Appropriate amount

<0.8