CN87104138A - A kind of vermiculizer and manufacture method thereof that is used to produce vermicular cast iron - Google Patents
A kind of vermiculizer and manufacture method thereof that is used to produce vermicular cast iron Download PDFInfo
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- CN87104138A CN87104138A CN 87104138 CN87104138A CN87104138A CN 87104138 A CN87104138 A CN 87104138A CN 87104138 CN87104138 CN 87104138 CN 87104138 A CN87104138 A CN 87104138A CN 87104138 A CN87104138 A CN 87104138A
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- vermiculizer
- rare earth
- iron
- cast iron
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- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052742 iron Inorganic materials 0.000 claims abstract description 37
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 27
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 21
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims abstract description 14
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011575 calcium Substances 0.000 claims abstract description 9
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 9
- 239000011701 zinc Substances 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010951 brass Substances 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000010936 titanium Substances 0.000 claims abstract description 7
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 239000007858 starting material Substances 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 19
- 239000000956 alloy Substances 0.000 claims description 19
- 239000011777 magnesium Substances 0.000 claims description 9
- 229910052749 magnesium Inorganic materials 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-NJFSPNSNSA-N silicon-30 atom Chemical compound [30Si] XUIMIQQOPSSXEZ-NJFSPNSNSA-N 0.000 claims description 3
- 238000011081 inoculation Methods 0.000 claims description 2
- 239000002667 nucleating agent Substances 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 10
- 239000005864 Sulphur Substances 0.000 abstract description 8
- 238000000465 moulding Methods 0.000 abstract description 3
- 230000008676 import Effects 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910001126 Compacted graphite iron Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The present invention is a kind of vermiculizer that is used to produce vermicular cast iron.This vermiculizer is to form with following starting material melting, rare earth ferrosilicon (add-on 50～75%) wherein, rare earth ferrosilicomagnesium (add-on 1～12%), silico-calcium (add-on 1～10%), aluminium ingot (adding 0.5～2%), brass (add-on 20～45%) is when without brass, copper (add-on 10～30%) then, zinc (add-on 4～8%).The present invention has utilized the rare earth mineral reserve of China's abundant, has saved the MAGNESIUM METAL of import, has given up nodularization interference element titanium, thereby makes molding floor's foundry returns not need special management, has brought convenience to production.Vermiculizer of the present invention in addition can be produced vermicular cast iron reliably under the situation of weight of molten iron and sulphur content generation fluctuation.
Description
A kind of vermiculizer that is used to produce vermicular cast iron is widely used in casting industry.
Vermicular cast iron is compared with common grey iron, and higher mechanical properties is arranged.Comparing with spheroidal graphite cast iron has good thermal conductivity and thermal shock resistance, and shrinks for a short time, is easy to make the cast iron of dense internal organization.Therefore vermicular cast iron is a kind of new structural material with outstanding over-all properties.
The vermiculizer of producing the iron of wriggling on the current industrial has a variety of, wherein most widely used a kind of be the vermiculizer of Britain cast iron association invention, siliceous, magnesium, titanium and rare earth, surplus is an iron.Its alloy component range is (by weight): silicon 30～80%; Magnesium 3～15%; Titanium 3～25%; Cerium 0.05～1.0%; Surplus is iron (seeing English Patent 1427445).This characteristic feature of an invention is: when the base iron sulphur content changes, when reaching the weight generation fluctuation of handling molten iron, still can make the iron of wriggling, be easy to stablize and reduce the scrap rate of failing and causing because of wriggling processing like this on producing.But this alloy mainly serves as wriggling district with metal titanium enlarges element, therefore has following two shortcomings: 1, the fusing point height of titanium, make that the melting work of vermiculizer alloy is very difficult, and the alloying element scaling loss is serious, and the vermiculizer alloying constituent is difficult to control.2, titanium is the nodularization interference element, and when molding floor produced magnesium iron simultaneously and wriggles iron, the foundry returns of the iron of wriggling can not be sneaked into the magnesium iron furnace charge, and this just needs workshop separated deposit foundry returns, makes troubles to production management.
The another kind of vermiculizer of producing the iron of wriggling is a rare earth ferrosilicon in China, and the typical trade mark is * T21, wherein contains rare earth element total amount 20～＜23%, silicon 46%, and surplus is iron and unavoidable impurities element manganese, p and s.The not only suitable China's rare earth national conditions rich in mineral resources of this vermiculizer, and can save the MAGNESIUM METAL of import.But 20 production practice for several years show that the suitable add-on scope of alloy of making vermiculizer of rare earth ferrosilicon is too narrow.As being that 21% rare earth ferrosilicon alloy is handled different sulphur content molten iron with containing the rare earth element total amount, its add-on scope that obtains vermicular cast iron is as follows:
Promptly to a certain sulphur content molten iron, the add-on scope that can make the rare earth ferrosilicon of the iron of wriggling only is 0.1%, when the processing weight of molten iron fluctuates a little, just might can not get the iron of wriggling.Molten iron gets magnesium iron after a little while, and molten iron then becomes graphitic cast iron for a long time.For certain alloy addition, when fluctuation takes place sulfur content of hot metal (as changing 0.01), also can make wriggling processing failure in addition.The sulphur content height one-tenth graphitic cast iron, sulphur content is low then balling iron.
Purpose of the present invention is developed a kind of neither titaniferous with regard to being to have overcome the problem that above-mentioned two types of vermiculizers exist, and when fluctuation takes place sulphur content in weight of molten iron and molten iron, also can produce the novel vermiculizer of vermicular cast iron reliably.
Vermiculizer of the present invention is to be smelt with following starting material: i.e. rare earth ferrosilicon (add-on 50～75%), rare earth ferrosilicomagnesium (add-on 1～12%), silico-calcium (add-on 1～10%), aluminium ingot (add-on 0.5～2%), brass (add-on 20～45%), when without brass, copper (add-on 10～30%) then, zinc (add-on 4～8%).This vermiculizer alloy ingredient scope is: total amount of rare earth 15～24%, and magnesium 0.5～6%, copper 10～30%, zinc 3～6%, aluminium 0.5～2%, silicon 30～40%, calcium 0.5～5%, surplus is iron and unavoidable impurities element manganese, p and s.Rare earth element in the above-mentioned alloy ingredient, magnesium and calcium are to make the cast iron flake graphite become the wriggling element of quasiflake graphite.Copper, zinc and aluminium are to enlarge the iron mould that obtains to wriggle to enclose, and promptly enlarge the element in wriggling district.Magnesium and zinc are because boiling point is low, and vapour pressure is big, can play the effect that vermiculizer is absorbed by molten iron better.Silicon is this alloy of melting " solvent ", and it guarantees that magnesium and rare earth element can be evenly distributed in the alloy.
Vermiculizer of the present invention can be founded in multiple smelting furnace such as coke crucible, oil oven or electric furnace.Its melting technology is rare earth ferrosilicon, rare earth ferrosilicomagnesium, silico-calcium and copper to be added in the crucible melt, and adds zinc, aluminium ingot during to 1250 ℃～1300 ℃, pours in the ingot mould after the stirring.During as the smear metal of usefulness binary brass, then be that brass, rare earth ferrosilicon, silico-calcium and rare earth ferrosilicomagnesium are added the fusing that is rapidly heated in the crucible,, add aluminium ingot after the stirring, pour into then in the metal ingot mould to 1250 ℃～1300 ℃.The treatment process of this vermiculizer is that molten iron will carry out inoculation after adding alloy, and nucleating agent is a ferrosilicon.Wherein base iron is with electric furnace or cupola melting.
Vermiculizer alloy of the present invention can guarantee to obtain vermicular cast iron under the condition of weight of molten iron and sulphur content generation fluctuation, foundry returns does not need special management, brings convenience for the management work of molding floor.
Embodiment:
With containing total amount of rare earth 22.6%, magnesium 2%, copper 12.4%, zinc 5%, silicon 34%, calcium 2%, surplus is the alloy production vermicular cast iron of iron and unavoidable impurities manganese, p and s.
1, the base iron composition is C4.0%, Si1.72%, and Mn0.68%, S0.033%, P0.056% handles molten iron with different vermiculizer add-ons, and adds 0.5% ferrosilicon and breed.It with the molten iron after wriggling processing cast test wedge and diameter 30 millimeters cylinder coupon.The result showed alloy addition at 0.7～1.5% o'clock, all can obtain nodulizing rate greater than 50% vermicular cast iron, and the suitable adding scope of alloy is 0.8%.
Its DCO data are as follows:
This example shows: vermiculizer of the present invention can be in the bigger variation of alloy addition, and what promptly weight of molten iron was controlled does not produce qualified vermicular cast iron under the situation very accurately.
2, be that 0.033% and 0.056% molten iron all adds 1.4% vermiculizer alloy to sulphur content, and add 0.5% ferrosilicon and breed.It is 30 millimeters cylinder coupon that molten iron after the processing pours into test wedge and diameter respectively, and two coupons of result all obtain vermicular cast iron.Its test data is as follows:
This example shows that the present invention still can produce vermicular cast iron when sulfur content of hot metal takes place than great fluctuation process (reaching 0.023%).
Reference:
1, English Patent 1427445 specification sheets date issueds on March 10th, 1976
2, vermicular iron, science tech publishing house's P13 page or leaf in 1979.
Claims (4)
1, a kind of vermiculizer that is used to produce vermicular cast iron, usually there are two kinds, a kind of siliceous, magnesium, titanium and rare earth element, another kind is a rare earth ferrosilicon, contain rare earth element, silicon and iron, the invention is characterized in, this vermiculizer is smelted into by following starting material: rare earth ferrosilicon (add-on 50～75%), rare earth ferrosilicomagnesium (add-on 1～12%), silico-calcium (add-on 1～10%), aluminium ingot (add-on 0.5～2%), brass (add-on 20～45%), when without brass, copper (add-on 10～30%) then, zinc (add-on 4～8%).
2,, it is characterized in that the alloy ingredient scope is: total amount of rare earth 15～24%, magnesium 0.5～6% according to the vermiculizer of claim 1, copper 10～30%, zinc 3～6%, aluminium 0.5～2%, silicon 30～40%, calcium 0.5～5%, surplus is iron and unavoidable impurities element manganese, p and s.
3, according to the vermiculizer of claim 1 or 2, its treatment process is characterised in that: molten iron will carry out inoculation after adding alloy, and used nucleating agent is a ferrosilicon.
4,, it is characterized in that base iron is with electric furnace or cupola melting according to the vermiculizer of claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87104138A CN87104138B (en) | 1987-06-15 | 1987-06-15 | Vermiculating agent for production of vermicular iron and its process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87104138A CN87104138B (en) | 1987-06-15 | 1987-06-15 | Vermiculating agent for production of vermicular iron and its process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87104138A true CN87104138A (en) | 1988-10-12 |
| CN87104138B CN87104138B (en) | 1988-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87104138A Expired CN87104138B (en) | 1987-06-15 | 1987-06-15 | Vermiculating agent for production of vermicular iron and its process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87104138B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967599A (en) * | 2010-09-13 | 2011-02-09 | 河南省中原内配股份有限公司 | Vermiculizer for producing vermicular cast iron cylinder sleeve by centrifugal casting and preparation method thereof |
| CN101858272B (en) * | 2009-04-07 | 2011-10-19 | 广西玉柴机器股份有限公司 | Diesel engine cylinder block of sedan and casting method thereof |
| CN103589941A (en) * | 2013-12-02 | 2014-02-19 | 丹阳市锦雄机械制造有限公司 | Method for preparing vermicular graphite cast iron by molten iron spheroidization |
-
1987
- 1987-06-15 CN CN87104138A patent/CN87104138B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858272B (en) * | 2009-04-07 | 2011-10-19 | 广西玉柴机器股份有限公司 | Diesel engine cylinder block of sedan and casting method thereof |
| CN101967599A (en) * | 2010-09-13 | 2011-02-09 | 河南省中原内配股份有限公司 | Vermiculizer for producing vermicular cast iron cylinder sleeve by centrifugal casting and preparation method thereof |
| CN101967599B (en) * | 2010-09-13 | 2012-12-05 | 河南省中原内配股份有限公司 | Vermiculizer for producing vermicular cast iron cylinder sleeve by centrifugal casting and preparation method thereof |
| CN103589941A (en) * | 2013-12-02 | 2014-02-19 | 丹阳市锦雄机械制造有限公司 | Method for preparing vermicular graphite cast iron by molten iron spheroidization |
Also Published As
| Publication number | Publication date |
|---|---|
| CN87104138B (en) | 1988-11-02 |
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