CN109504814A - The low rare-earth nodularizer of novel low silicon and preparation method - Google Patents
The low rare-earth nodularizer of novel low silicon and preparation method Download PDFInfo
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- CN109504814A CN109504814A CN201811608698.XA CN201811608698A CN109504814A CN 109504814 A CN109504814 A CN 109504814A CN 201811608698 A CN201811608698 A CN 201811608698A CN 109504814 A CN109504814 A CN 109504814A
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- nodulizer
- oxide
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/10—Making spheroidal graphite cast-iron
- C21C1/105—Nodularising additive agents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
- C22C33/10—Making cast-iron alloys including procedures for adding magnesium
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of low rare-earth nodularizers of novel low silicon, belong to casting technology field.Including following parts by weight material: the silicon of 44-50 parts by weight；The calcium of 1.79-2.07 parts by weight；5-6.36 the magnesia of parts by weight；The aluminium of 0.5-1.01 parts by weight；The titanium of 0.009-0.051 parts by weight；The manganese of 1.09-1.35 parts by weight；The nickel of 0.35-0.65 parts by weight；The cerium oxide of 0.9-1.65 parts by weight；The yttrium oxide of 0.03-0.09 parts by weight；The rubidium oxide of 0.06-0.1 parts by weight.By introducing a variety of rare earth elements, nodulizer is improved to the Oxygen potential of graphite, while can reduce nodulizer to the chill depth of cast iron；Match same-action by the consonance of addition titanium, manganese, nickel, effectively prevents nodulizer from floating to molten iron surface and be burned off, be conducive to nodularization, improve the intensity, hardness and heat resistance of alloy.
Description
Technical field
The present invention relates to a kind of nodulizer, it is especially a kind of low rare-earth nodularizer of novel low silicon and preparation method, belongs to
Casting technology field.
Background technique
Spheriodization process thereof is the key technique for producing ductile cast iron casting.So far, nodulizer is cast in spheroidal graphite
Irreplaceable role is played in iron production.It is generally known that spheroidizing process be by the carbon conversion of sheet be it is spherical, in cast iron
When, it can combine closely with iron containing the carbon of 2-4, these carbon, however, form of these carbon in the cast iron of solidification is for cast iron
The performance of part is vital.
If these carbon are referred to as white iron in carbonization Iron activiation, the cast iron, the performance of white iron be presented as it is hard and
Crisp, therefore, practicability is very poor.If carbon is in graphite state, cast iron is soft, and easy to process, referred to as gray cast iron, practicability are very strong.Though
So have existed a large amount of nodulizer type in the prior art, but from save the cost, reduce the usage amount and existing skill of silicon
The factors such as reversion phenomenon present in art, tension-active element interference, reduction chilling tendency are set out, and nodulizer still has very big change
Into space.
Summary of the invention
The present invention aiming at the problems existing in the prior art, discloses a kind of low rare-earth nodularizer of novel low silicon, the present invention
Using the synergistic effect of a variety of rare earth elements, nodulizer is improved to the Oxygen potential of graphite, reduces nodulizer to the white of cast iron
Mouth depth；In addition, acting synergistically between rare earth element of the invention is able to suppress the interference of tension-active element, be conducive to ball
Change, improves alloy strength, hardness and heat resistance.
The low rare-earth nodularizer of novel low silicon provided by the invention, including following parts by weight material: the silicon of 44-50 parts by weight；
The calcium of 1.79-2.07 parts by weight；5-6.36 the magnesia of parts by weight；The aluminium of 0.5-1.01 parts by weight；0.009-0.051 parts by weight
Titanium；The manganese of 1.09-1.35 parts by weight；The nickel of 0.35-0.65 parts by weight；The cerium oxide of 0.9-1.65 parts by weight；0.03-0.09
The yttrium oxide of parts by weight；The rubidium oxide of 0.06-0.1 parts by weight.Titanium therein, manganese, the coordinated effect between nickel can be effective
Prevent from nodulizer from floating to molten iron surface being burned off, be conducive to nodularization, improve alloy strength；Cerium oxide therein, yttrium oxide, oxygen
Changing rubidium can be improved nodulizer to the Oxygen potential of graphite, reduce nodulizer to the chill depth of cast iron.
Further, the nodulizer further includes the gadolinium oxide of 0.04-0.06 parts by weight.
Further, the partial size of the nodulizer is 8-11mm, and sulfur content is less than 2.7 in the nodulizer.The present invention
Nodulizer uniform particle diameter, Oxygen potential is high.
The low rare-earth nodularizer of above-mentioned novel low silicon the preparation method comprises the following steps: choose the silicon of corrresponding quality part, calcium, magnesia, aluminium,
Titanium, manganese, nickel, cerium oxide, yttrium oxide, rubidium oxide are crushed said components, grind into powder using taper breaker roll, and sieving passes through
Medium-frequency induction furnace high temperature is prepared.
Further, the spacing between every group of roller bearing of the taper breaker roll is equal, the equal ball being prepared of spacing
The uniform particle diameter of agent.
Further, the temperature setting of the medium-frequency induction furnace is 1000-1100 DEG C, power 160-170KW.
Further, the mesh number of sieving is 40-60 mesh, the uniform particle diameter after sieving.
The beneficial effect of the present invention and the prior art is:
1) silicone content and content of rare earth in the component of nodulizer is greatly lowered in the present invention, can both relax to original iron melt silicon
The control range of content, and advantageous process conditions can be created for intensive inoculation processing, thin-wall part carbonization can be effectively eliminated
Object and heavy section casting chunky graphite, improve nodularization efficiency；
2) present invention passes through a variety of rare earth elements for introducing cerium oxide, yttrium oxide, rubidium oxide, gadolinium oxide, improves nodulizer pair
The Oxygen potential of graphite, while nodulizer can be reduced to the chill depth of cast iron；In addition, cerium oxide of the invention, yttrium oxide, oxygen
Change rubidium, a variety of rare earth elements of gadolinium oxide can prevent reversion phenomenon, improve casting quality, boiling point is high, is able to suppress anti-nodularization
Element disturbance；
3) same-action is matched by the consonance of addition titanium, manganese, nickel, effectively prevents nodulizer from floating to molten iron surface and be burned off, favorably
In nodularization, the intensity, hardness and heat resistance of alloy are improved；
4) present invention can accelerate the broken speed of nodulizer, raising crushing efficiency, and breaker roll by taper breaker roll
Spacing is equal, is conducive to prepare the equal nodulizer of partial size；
5) nodulizer of the invention significantly improves the Oxygen potential of graphite, while can reduce the chill depth to cast iron, not
Under the premise of influencing Oxygen potential, while the usage amount of silicon and rare earth can be reduced.
Specific embodiment
It is clear to keep the purpose of the present invention, technical solution and effect clearer, example is exemplified below to the present invention into one
Step is described in detail.It should be understood that specific implementation described herein is not intended to limit the present invention only to explain the present invention.
Embodiment 1
Choose the silicon of 44 parts by weight；The calcium of 1.79 parts by weight；The magnesia of 5 parts by weight；The aluminium of 0.5 parts by weight；0.009 parts by weight
Titanium；The manganese of 1.09 parts by weight；The nickel of 0.35 parts by weight；The cerium oxide of 0.9 parts by weight；The yttrium oxide of 0.03 parts by weight；0.06
The rubidium oxide of parts by weight.Said components, grind into powder are crushed using taper breaker roll, sieving passes through medium-frequency induction furnace height
Temperature preparation, the temperature setting of medium-frequency induction furnace are 1000-1100 DEG C, power 160-170KW.
Embodiment 2
Choose the silicon of 50 parts by weight；The calcium of 2.07 parts by weight；The magnesia of 6.36 parts by weight；The aluminium of 1.01 parts by weight；0.051 weight
Measure the titanium of part；The manganese of 1.35 parts by weight；The nickel of 0.65 parts by weight；The cerium oxide of 1.65 parts by weight；The yttrium oxide of 0.09 parts by weight；
The rubidium oxide of 0.1 parts by weight.Said components, grind into powder are crushed using taper breaker roll, sieving passes through medium-frequency induction furnace
High temperature preparation, the temperature setting of medium-frequency induction furnace are 1000-1100 DEG C, power 160-170KW.
Embodiment 3
Choose the silicon of 46 parts by weight；The calcium of 1.97 parts by weight；The magnesia of 5.6 parts by weight；The aluminium of 0.7 parts by weight；0.01 weight
The titanium of part；The manganese of 1.2 parts by weight；The nickel of 0.4 parts by weight；The cerium oxide of 1.5 parts by weight；The yttrium oxide of 0.06 parts by weight；0.07
The rubidium oxide of parts by weight.Said components, grind into powder are crushed using taper breaker roll, sieving passes through medium-frequency induction furnace height
Temperature preparation, the temperature setting of medium-frequency induction furnace are 1000-1100 DEG C, power 160-170KW.
Embodiment 4
Choose the silicon of 49 parts by weight；The calcium of 2.01 parts by weight；The magnesia of 5.7 parts by weight；The aluminium of 1.0 parts by weight；0.03 weight
The titanium of part；The manganese of 1.2 parts by weight；The nickel of 0.45 parts by weight；The cerium oxide of 1.35 parts by weight；The yttrium oxide of 0.07 parts by weight；
The rubidium oxide of 0.08 parts by weight；The gadolinium oxide of 0.04 parts by weight.Using taper breaker roll be crushed said components, grind into powder,
Sieving, is prepared by medium-frequency induction furnace high temperature, and the temperature setting of medium-frequency induction furnace is 1000-1100 DEG C, power 160-
170KW。
Embodiment 5
Choose the silicon of 47 parts by weight；2.0 the calcium of parts by weight；The magnesia of 5.9 parts by weight；The aluminium of 0.7 parts by weight；0.041 weight
The titanium of part；The manganese of 1.25 parts by weight；The nickel of 0. 5 parts by weight；The cerium oxide of 1.65 parts by weight；The yttrium oxide of 0.05 parts by weight；
The rubidium oxide of 0.1 parts by weight；The gadolinium oxide of 0.06 parts by weight.Said components, grind into powder, mistake are crushed using taper breaker roll
Sieve, is prepared by medium-frequency induction furnace high temperature, and the temperature setting of medium-frequency induction furnace is 1000-1100 DEG C, power 160-
170KW。
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as of the invention
Protection scope.
Claims (7)
1. the low rare-earth nodularizer of a kind of novel low silicon, including following parts by weight material: the silicon of 44-50 parts by weight；1.79-2.07 weight
Measure the calcium of part；5-6.36 the magnesia of parts by weight；The aluminium of 0.5-1.01 parts by weight；The titanium of 0.009-0.051 parts by weight；1.09-
The manganese of 1.35 parts by weight；The nickel of 0.35-0.65 parts by weight；The cerium oxide of 0.9-1.65 parts by weight；The oxygen of 0.03-0.09 parts by weight
Change yttrium；The rubidium oxide of 0.06-0.1 parts by weight.
2. the low rare-earth nodularizer of the novel low silicon of one kind according to claim 1, which is characterized in that the nodulizer also wraps
Include the gadolinium oxide of 0.04-0.06 parts by weight.
3. the low rare-earth nodularizer of the novel low silicon of one kind according to claim 1, which is characterized in that the grain of the nodulizer
Diameter is 8-11mm, and sulfur content is less than 2.7 in the nodulizer.
4. a kind of preparation method of the low rare-earth nodularizer of any one of claims 1 to 3 novel low silicon, which is characterized in that choosing
Silicon, calcium, magnesia, aluminium, titanium, manganese, nickel, cerium oxide, yttrium oxide, the rubidium oxide for taking corrresponding quality part are broken using taper breaker roll
Broken said components, grind into powder, sieving are prepared by medium-frequency induction furnace high temperature.
5. the preparation method of the low rare-earth nodularizer of novel low silicon according to claim 4, which is characterized in that the taper is broken
Spacing between every group of roller bearing of broken roller is equal.
6. the preparation method of the low rare-earth nodularizer of novel low silicon according to claim 4, which is characterized in that the mesh number of sieving is
40-60 mesh.
7. the preparation method of the low rare-earth nodularizer of novel low silicon according to claim 4, which is characterized in that the intermediate frequency sense
The temperature setting for answering electric furnace is 1000-1100 DEG C, power 160-170KW.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811608698.XA CN109504814A (en) | 2018-12-27 | 2018-12-27 | The low rare-earth nodularizer of novel low silicon and preparation method |
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| CN201811608698.XA CN109504814A (en) | 2018-12-27 | 2018-12-27 | The low rare-earth nodularizer of novel low silicon and preparation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111575429A (en) * | 2020-06-09 | 2020-08-25 | 江苏亚峰合金材料有限公司 | Lanthanum-containing nodulizer and preparation method thereof |
| CN113020605A (en) * | 2020-12-17 | 2021-06-25 | 南京航空航天大学 | Special in-situ toughening high-performance spherical tungsten powder for laser 3D printing and preparation method thereof |
| CN114269491A (en) * | 2019-06-20 | 2022-04-01 | 雷蒙多·爱德华多·斯塔克波尔阿门达里斯 | Additive for treating molten iron to produce cast iron with zero shrinkage and with spheroidal graphites of the Langerhans type |
| CN114737005A (en) * | 2022-04-15 | 2022-07-12 | 江苏亚峰合金材料有限公司 | Novel nodulizer for reducing chilling tendency of cast iron |
-
2018
- 2018-12-27 CN CN201811608698.XA patent/CN109504814A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114269491A (en) * | 2019-06-20 | 2022-04-01 | 雷蒙多·爱德华多·斯塔克波尔阿门达里斯 | Additive for treating molten iron to produce cast iron with zero shrinkage and with spheroidal graphites of the Langerhans type |
| CN114269491B (en) * | 2019-06-20 | 2024-04-30 | 雷蒙多·爱德华多·斯塔克波尔阿门达里斯 | Additive for treating molten iron to produce cast iron with zero shrinkage and with lambertian spheroidal graphite |
| CN111575429A (en) * | 2020-06-09 | 2020-08-25 | 江苏亚峰合金材料有限公司 | Lanthanum-containing nodulizer and preparation method thereof |
| CN113020605A (en) * | 2020-12-17 | 2021-06-25 | 南京航空航天大学 | Special in-situ toughening high-performance spherical tungsten powder for laser 3D printing and preparation method thereof |
| CN114737005A (en) * | 2022-04-15 | 2022-07-12 | 江苏亚峰合金材料有限公司 | Novel nodulizer for reducing chilling tendency of cast iron |
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