CN107419050A - A kind of spheroidal graphite cast-iron glass mold inovulant - Google Patents
A kind of spheroidal graphite cast-iron glass mold inovulant Download PDFInfo
- Publication number
- CN107419050A CN107419050A CN201710483997.4A CN201710483997A CN107419050A CN 107419050 A CN107419050 A CN 107419050A CN 201710483997 A CN201710483997 A CN 201710483997A CN 107419050 A CN107419050 A CN 107419050A
- Authority
- CN
- China
- Prior art keywords
- inovulant
- iron
- glass mold
- spheroidal graphite
- graphite cast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of spheroidal graphite cast-iron glass mold inovulant, and it is made up of following weight percent composition：Bi 2~5%, Si 45~50%, Ba 0.5~3%, La 0.1~3%, Al 2~2.2%, Ca 0.5~1%, Sr 0.5~0.8%, surplus is Fe and inevitable trace element；The inovulant of the present invention promotes the formation of superfine spherical graphite cast iron (graphite form is 1000 every square millimeter of spherical graphite tissues), promotes Oxygen potential to reach >=90%, spheroidal graphite metallographic structure ＞ 1000/mm2The high temperature resistant of glass mold, corrosion-resistant and dimensional stability demand can be met, and can meets that inner chamber consistency high energy does the requirement of mold cavity surface mirror finish, and its consistency enables to polishing effect good, it can increase the service life, moreover it is possible to mitigate production cost and save alloy material.
Description
Technical field
It is an object of the invention to provide a kind of inovulant, specifically a kind of spheroidal graphite cast-iron glass mold inovulant.
Background technology
Spheroidal graphite cast-iron is to obtain globular graphite by nodularization and inoculation, is effectively improved the mechanical performance of cast iron,
Plasticity and toughness are in particular improved, so as to obtain the intensity also higher than carbon steel.Cast iron is the iron carbon that phosphorus content is more than 2.11%
Alloy, obtained by the steels such as commercial iron, steel scrap and its alloy material by high-temperature fusion and casting.Spheroidal graphite cast-iron is
20th century a kind of high-strength cast iron material for growing up of the fifties, it is excellent to be based on its close to steel its combination property
Performance, be successfully used to cast some stress complexity, intensity, toughness, wearability require higher part.Spheroidal graphite cast-iron is
Develop rapidly for be only second to gray cast iron, using quite varied cast iron materials.So-called " with iron for steel ", refer mainly to spheroidal graphite casting
Iron.It has been applied in all key industries at present, it is the high intensity of these goals, plasticity, toughness, wearability, resistance to tight
The heat of weight and mechanical shock, high temperature resistant or low temperature, corrosion-resistant and dimensional stability etc..
Glass mold applies gray cast iron class, is due to that gray cast iron can when casting always in the last few years as unexpected winner industry
More alloying elements are added, disclosure satisfy that most glass mold high temperature resistant, corrosion-resistant and dimensional stability demand,
But the consistency of its material is inadequate, mold cavity surface can not do mirror finish processing, strive and larger bottle-type can be applied well.
Cosmetics vessel improve its one side as the function of containing cosmetic emulsion with the living standard of people, on the other hand more incline
To in glass quartz art work vessel.It is therefore high to its surface smoothness requirements.Superfine spherical graphite cast iron can meet glass
The high temperature resistant of mould, corrosion-resistant and dimensional stability demand, and can meet that inner chamber consistency high energy does mold cavity surface minute surface
The requirement of polishing.
The content of the invention
It is an object of the invention to provide a kind of spheroidal graphite cast-iron glass mold of the formation of the superfine spherical graphite cast iron of promotion is pregnant
Educate agent.
In order to reach above-mentioned technical purpose, the technical scheme is that：
A kind of spheroidal graphite cast-iron glass mold inovulant, it is made up of following weight percent composition：Bi 2~5%, Si 45
~50%, Ba 0.5~3%, La 0.1~3%, Al 2~2.2%, Ca 0.5~1%, Sr 0.5~0.8%, surplus Fe
And inevitably micro- (such as S, P, this has also agreed with reduction S, P composition original intention of the invention).
Calcium containing 2~2.2% aluminium, 0.5~1% in inovulant of the present invention, the aluminium and calcium of low content are easy to melt, can
Significantly to reduce due to casting flaw caused by slag and Cause of Shrinkage Void.In common silicon iron inoculator, the aluminium in iron liquid contains
Amount can not be too high, adds 0.01% aluminium, it is possible to causes casting to produce subcutaneous blowhole.The aluminium content of the present invention will not cause to cast
Part produces subcutaneous blowhole, and the aluminium being primarily due in content is used to reduce on a small quantity to lack due to casting caused by slag and Cause of Shrinkage Void
Fall into, be largely to be used to substitute silicon.Aluminium is used to substitute silicon, and performance is suitable within the specific limits, but solves because of silicone content
Inovulant density is small (being less than iron liquid) caused by big, the problem of being easy to float and influence its effect with iron liquid；And solve
Slagging tendency is big and the problems such as decline is fast.
Preferably, the inovulant is made up of following weight percent composition：Bi 5%, Si 50%, Ba 3%, La
2%, Al 2%, Ca 1%, Sr 0.6%, surplus is Fe and inevitable trace element.
The inovulant in ferrosilicon based alloy, metal oxide solid mixture in the form of.
The inovulant of the present invention promotes superfine spherical graphite cast iron, and (graphite form is 1000 every square of spherical graphite tissues
Millimeter) formation, promote Oxygen potential to reach >=90%, spheroidal graphite metallographic structure ＞ 1000/mm2, the resistance to of glass mold can be met
High temperature, corrosion-resistant and dimensional stability demand, and can meet that inner chamber consistency high energy does wanting for mold cavity surface mirror finish
Ask, its consistency enables to polishing effect good, can increase the service life, moreover it is possible to mitigate production cost and save alloy material.
Embodiment
Embodiment 1
(1) alloy raw material is weighed by following mass percent, and the alloy raw material weighed is crushed：Bi 5%, Si
50%, Ba 3%, La 2%, Al 2%, Ca 1%, Sr 0.6%, surplus is Fe and inevitable trace element.
(2) alloy raw material of crushing is put into vacuum crucible and is warming up to 1400 DEG C so that each melting sources；
(3) after raw material is fully melt-blended, vacuum cooled.
Embodiment 2
(1) alloy raw material is weighed by following mass percent, and the alloy raw material weighed is crushed：Bi 2%, Si
45%, Ba 1%, La 0.1%, Al 2.2%, Ca 0.5%, Sr 0.6%, surplus is Fe and inevitable micro member
Element.
(2) alloy raw material of crushing is put into vacuum crucible and is warming up to 1450 DEG C so that each melting sources；
(3) after raw material is fully melt-blended, vacuum cooled.
Embodiment 3
(1) alloy raw material is weighed by following mass percent, and the alloy raw material weighed is crushed：Bi 3%, Si
50%, Ba 0.5%, La 3%, Al 2%, Ca 1%, Sr 0.8%, surplus is Fe and inevitable trace element.
(2) alloy raw material of crushing is put into vacuum crucible and is warming up to 1350 DEG C so that each melting sources；
(3) after raw material is fully melt-blended, vacuum cooled.
The inovulant that above-described embodiment 1~3 obtains is separately added into 0.1% in QT500-7 spheroidal graphite cast-iron preparation processes to be made
With：When molten iron discharging accounts for hand and subcontracts 1/2 amount, add inovulant and carry out inoculation, the Mechanical Properties in Ductile Cast Iron of acquisition
Test result is as follows：
Above-described embodiment is not limit the invention in any way, every to be obtained by the way of equivalent substitution or equivalent transformation
Technical scheme all fall within protection scope of the present invention.
Claims (3)
1. a kind of spheroidal graphite cast-iron glass mold inovulant, it is characterised in that be made up of following weight percent composition：Bi 2~
5%, Si 45~50%, Ba 0.5~3%, La 0.1~3%, Al 2~2.2%, Ca 0.5~1%, Sr 0.5~
0.8%, surplus is Fe and inevitable trace element.
A kind of 2. nodular cast iron inoculant according to claim 1, it is characterised in that：The inovulant is by following weight hundred
Divide and formed than component：Bi 5%, Si 50%, Ba 3%, La 2%, Al 2%, Ca 1%, Sr 0.6%, surplus be Fe and
Inevitably trace element.
A kind of 3. nodular cast iron inoculant according to claim 1, it is characterised in that：The inovulant closes in ferrosilicon base
The form of golden, metal oxide solid mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710483997.4A CN107419050B (en) | 2017-06-23 | 2017-06-23 | Nodular cast iron glass mold inoculant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710483997.4A CN107419050B (en) | 2017-06-23 | 2017-06-23 | Nodular cast iron glass mold inoculant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107419050A true CN107419050A (en) | 2017-12-01 |
| CN107419050B CN107419050B (en) | 2020-02-07 |
Family
ID=60426135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710483997.4A Active CN107419050B (en) | 2017-06-23 | 2017-06-23 | Nodular cast iron glass mold inoculant |
Country Status (1)
| Country | Link |
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| CN (1) | CN107419050B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024508A1 (en) * | 1994-03-09 | 1995-09-14 | Elkem A/S | Cast iron inoculant and method for production of cast iron inoculant |
| CN1281513A (en) * | 1997-12-08 | 2001-01-24 | 埃尔凯姆公司 | Cast iron inoculant and method for production of cast iron inoculant |
| CN1615191A (en) * | 2002-01-10 | 2005-05-11 | 皮奇尼电冶公司 | Inoculation filter |
| CN103484749A (en) * | 2013-09-02 | 2014-01-01 | 宁波康发铸造有限公司 | Nodular cast iron inoculant and preparation method thereof and application in smelting nodular cast iron |
-
2017
- 2017-06-23 CN CN201710483997.4A patent/CN107419050B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024508A1 (en) * | 1994-03-09 | 1995-09-14 | Elkem A/S | Cast iron inoculant and method for production of cast iron inoculant |
| CN1281513A (en) * | 1997-12-08 | 2001-01-24 | 埃尔凯姆公司 | Cast iron inoculant and method for production of cast iron inoculant |
| CN1615191A (en) * | 2002-01-10 | 2005-05-11 | 皮奇尼电冶公司 | Inoculation filter |
| CN103484749A (en) * | 2013-09-02 | 2014-01-01 | 宁波康发铸造有限公司 | Nodular cast iron inoculant and preparation method thereof and application in smelting nodular cast iron |
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| Publication number | Publication date |
|---|---|
| CN107419050B (en) | 2020-02-07 |
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