CN102181810B - A kind of antifriction vermicular graphite cast iron material and preparation method thereof - Google Patents
A kind of antifriction vermicular graphite cast iron material and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 59
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract description 11
- 229910002804 graphite Inorganic materials 0.000 title abstract description 9
- 239000010439 graphite Substances 0.000 title abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 253
- 229910052742 iron Inorganic materials 0.000 claims abstract description 120
- 239000011159 matrix material Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 239000011651 chromium Substances 0.000 claims description 30
- 239000010949 copper Substances 0.000 claims description 30
- 229910052802 copper Inorganic materials 0.000 claims description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 28
- 229910052804 chromium Inorganic materials 0.000 claims description 27
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 26
- 229910001126 Compacted graphite iron Inorganic materials 0.000 claims description 21
- 229910052748 manganese Inorganic materials 0.000 claims description 20
- 238000007747 plating Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000000576 coating method Methods 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 17
- 238000005266 casting Methods 0.000 claims description 15
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 13
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 150000002910 rare earth metals Chemical class 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000002667 nucleating agent Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- RDTHZIGZLQSTAG-UHFFFAOYSA-N dysprosium iron Chemical compound [Fe].[Dy] RDTHZIGZLQSTAG-UHFFFAOYSA-N 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 3
- 238000007528 sand casting Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 239000011572 manganese Substances 0.000 description 17
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910019878 Cr3Si Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000003831 antifriction material Substances 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本发明提供一种减摩蠕墨铸铁材料及其制备方法，该材料具有良好的性能。该制备方法工艺简单，生产成本低，适于工业化生产。该减摩蠕墨铸铁材料以蠕墨铸铁为基体，在基体中分布着由铁丝形成的金属丝团，所用铁丝直径为1-2mm，金属丝团的直径为10-15cm，铁丝占材料的体积百分比为5-40%。
The invention provides a friction-reducing vermicular graphite cast iron material and a preparation method thereof. The material has good properties. The preparation method has simple process, low production cost and is suitable for industrialized production. The anti-friction vermicular graphite cast iron material uses vermicular graphite cast iron as a matrix, and metal wire clusters formed by iron wires are distributed in the matrix. The diameter of the iron wires used is 1-2mm, and the diameter of the metal wire clusters is 10-15cm. The iron wires account for the volume of the material. The percentage is 5-40%.
Description
Technical field
The invention belongs to metal material field, relate to a kind of antifriction vermicular graphite iron material and preparation method thereof.
Background technology
In metal material field, antifriction cast iron receives generally as low-cost antifriction material always and paying attention to.
CN201010128379.6 number application discloses a kind of alloy vermicular graphite iron material, it is characterized in that by weight percentage its chemical constitution is: carbon: 3.1-3.6%; Silicon: 2.1-2.85%, manganese: 0.91-1.25%, nickel: 1.05-1.45%; Molybdenum: 0.10-0.25%, titanium: 0.10-0.20%, magnesium: 0.01-0.04%; Phosphorus:＜0.05%, sulphur:＜0.07%, Yu Weitie.
CN200810230471.6 number application relates to a kind of compacted graphite cast iron air cylinder sleeve and preparation method thereof.The chemical ingredients of said compacted graphite cast iron air cylinder sleeve is following by weight: carbon 3.4-3.8%, and sulphur≤0.05%, silicon 1.8-2.6%, phosphorus≤0.50%, manganese 0.5-1.0%, chromium 0.2-0.5%, copper 0.2-0.5%, surplus is Fe.Adopting the compacted graphite cast iron air cylinder sleeve working-surface hardness of chemical constitution of the present invention is 260～320HB, tensile strength sigma
bBe 430～520MPa, meet HS and high-wearing feature requirement, and cost be relatively low, can satisfy the requirement of high speed in the present age, high reinforcement, high-performance, low emission, long lifetime heavy duty fully.There is a large amount of graphite in this cast iron, and the toughness of material and tensile strength have all received very big restriction.
Summary of the invention
The object of the invention is exactly to above-mentioned technological deficiency, and a kind of antifriction vermicular graphite iron material is provided, and this material has good performance.
Another object of the present invention provides a kind of preparation method of antifriction vermicular graphite iron material, and this preparing method's technology is simple, and production cost is low, is suitable for suitability for industrialized production.
The objective of the invention is to realize through following technical scheme:
A kind of antifriction vermicular graphite iron material, this material are matrix with the vermicular cast iron, the wire group that in matrix, is distributing and forming by iron wire, and used iron wire diameter is 1-2mm, and the diameter of wire group is 10-15cm, and the volume percent that iron wire accounts for material is 5-40%;
The following chemical components in percentage by weight of vermicular cast iron matrix: C is 3.3%～3.5%, and Si is 2.9%～3.3%, and Mn is 0.1-0.4%, and Dy is 0.5-0.8%, and < 0.03%, < 0.025%, all the other are Fe to S to P;
The following chemical components in percentage by weight of iron wire is: C is 0.05-0.09%, and Si is 0.1%～0.2%, and Mn is 0.25-0.35%, and < 0.02%, < 0.025%, all the other are Fe to S to P.
The CuC2 that also is distributed with in the matrix, Cr3Si and Cr23C6 particle.
The preparation method of antifriction vermicular graphite iron material is characterized in that: it may further comprise the steps:
The preparation of chromium plating iron wire and copper coated iron wire: cut-off is 0.05-0.09% for 1-2mm, composition weight percentage: C directly, and Si is 0.1%～0.2%, and Mn is 0.25-0.35%; P < 0.02%; < 0.025%, all the other are the iron wire of Fe to S, and the volume percent that the control iron wire accounts for material is 5-40%;
Press ordinary method in half iron wire chrome-faced, second half iron wire copper coating; The chromium plating iron wire and the copper coated iron wire that form respectively; The thickness of coating is 100-500 μ m; The chromium plating iron wire that forms is suitable with copper coated iron wire length;
Ordinary method by cleaning ball production is respectively got rhizoid formation globular mixing mariages wire group with above-mentioned chromium plating iron wire and copper coated iron wire; Wire group's diameter is 10-15cm; Number of metal silk group is put into casting mold mo(u)ld bottom half die cavity; The tightness of wire group guarantees that by the volume percent decision that iron wire accounts for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, molten iron pouring is waited in the mould assembling back that finishes;
The preparation of vermicular graphite iron material matrix: percentage composition: C is 3.3%～3.5% by weight, and Si is 2.9%～3.3%, and Mn is 0.1-0.4%, and Dy is 0.5-0.8%, and < 0.03%, < 0.025%, all the other prepare burden for the vermicular cast iron of Fe S P; Wherein part Si, Dy and Fe add with follow-up mode; The vermicular cast iron raw material is fused into molten iron in induction furnace, teeming temperature is 1420-1460 ℃; Before the cast, in casting ladle, add successively molten steel quality 0.6-0.8% 75 ferrosilicon nucleating agents and 0.4-0.6% contain Dy rare earth vermiculizer, adopt and pour the method following current and pour in the fire bag; In the rare earth vermiculizer, percentage composition Dy is 25% by weight, and silicon is 25%, and all the other are iron; Remaining Dy amount in the vermicular graphite iron material adopts the dysprosium iron that contains Dy50% to replenish;
Above-mentioned vermicular cast iron molten iron is poured into the dry sand casting mold that wire group is housed, and liquid metal surrounds chromium plating iron wire and copper coated iron wire, cooled and solidified then, form with the vermicular cast iron be base wherein be distributed with the material that wire is rolled into a ball.
It is following that the present invention compares the beneficial effect of prior art:
1, the iron wire self in the material of the present invention has suitable intensity and high toughness.The matrix of iron wire and vermicular cast iron all is an iron, so iron wire and vermicular cast iron be easy to combine, and forms good metallurgical binding.Like this, iron wire is distributed in the fragility vermicular cast iron, and material is had good enhancing toughening effect.
2, in the preparation process; When getting into the casting mold die cavity, molten iron contacts with iron wire; Cu and Cr in the iron wire overlay coating are fused to molten iron, and the Cu and the Cr reaction on the C in the molten iron, Si and iron wire surface form Cr3Si, CuC2 and Cr23C6 compound, promote that the C in the molten iron separates out with the form of carbide; Be distributed in the matrix, these reactants are higher than cementite hardness.This special compound that forms has further improved the antifriction quality of material.
3, Dy has anti-spheroidization of graphite effect, and the formation China ink of wriggling is had decisive action.The effect that in addition tissue of vermicular cast iron is had remarkable refinement has important effect for vermicular cast iron toughness reinforcing.C and Dy also can form C and Dy Compound D y3C simultaneously, are distributed in the raising that also helps the material antifriction quality in the matrix.
4, material of the present invention need not valuable REE, and principal element is brought into by iron wire, and the cost of material is low for iron wire, and preparation technology is easy, and production cost is low, and the alloy material performance of production is good, and is convenient to very much suitability for industrialized production.Be suitable for making many antifriction parts, like mechanical braking dish etc.
The performance of material of the present invention is seen table 1.
Description of drawings
The iron wire that Fig. 1 makes for the embodiment of the invention one strengthens the metallographic structure that contains dysprosium antifriction vermicular graphite iron material.
Fig. 1 can see at vermicular cast iron and combining well with iron wire.
Embodiment
Each embodiment is only with of the present invention the explaining of opposing below
, and weight percent wherein all can change weight g, kg or other weight unit into.Following iron wire is commercial, the coating self-control.
Embodiment one:
The preparation of chromium plating iron wire and copper coated iron wire:
Cut-off is 0.05% for 1mm, composition weight percentage: C directly, and Si is 0.1%, and Mn is 0.25%, and < 0.02%, < 0.025%, all the other are the iron wire of Fe to S to P, and the volume percent that the control iron wire accounts for material is 5%.
Press ordinary method in half iron wire chrome-faced, second half iron wire copper coating; The chromium plating iron wire and the copper coated iron wire that form respectively; The thickness of coating is 100 μ m; Two kinds of coating iron wire overall length are suitable.
Ordinary method by cleaning ball production is respectively got (the two rhizoids moulding simultaneously of rhizoid formation globular mixing mariages wire group with above-mentioned chromium plating iron wire and copper coated iron wire; Form mariages wire group; Moulding can or be claimed the method for steel wire lump by the cleaning ball of the usefulness that washes the dishes), wire group diameter is 15cm, and number of metal silk group is put into casting mold mo(u)ld bottom half die cavity; The tightness of wire group guarantees that by the volume percent decision that iron wire accounts for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, molten iron pouring is waited in the mould assembling back that finishes;
The preparation of vermicular graphite iron material matrix: percentage composition: C is 3.3% by weight, and Si is 2.9%, and Mn is 0.1%, and Dy is 0.5 %, and < 0.03%, < 0.025%, all the other prepare burden for the vermicular cast iron of Fe S P; Wherein part Si, Dy and Fe add with follow-up mode; The vermicular cast iron raw material is fused into molten iron in induction furnace, teeming temperature is 1435-1440 ℃; Before the cast, in casting ladle, add successively molten steel quality 0.6% 75 ferrosilicon nucleating agents and 0.4% contain Dy rare earth vermiculizer, adopt and pour the method following current and pour in the fire bag; In the rare earth vermiculizer, percentage composition Dy is 25% by weight, and silicon is 25%, and all the other are iron; Remaining Dy amount in the vermicular graphite iron material adopts the dysprosium iron (wherein part iron is brought into by it) that contains Dy50% to replenish;
Above-mentioned vermicular cast iron molten iron is poured into the dry sand casting mold that wire group is housed, and liquid metal surrounds chromium plating iron wire and copper coated iron wire, cooled and solidified then, form with the vermicular cast iron be base wherein be distributed with the material that wire is rolled into a ball.
Embodiment two:
Vermicular graphite iron material matrix composition weight percentage: C is 3.5%, and Si is 3.3%, and Mn is 0.4%, and Dy is 0.8%, and < 0.03%, < 0.025%, all the other are Fe to S to P.
The weight percentage of iron wire composition is: C is 0.09%, and Si is 0.2%, and Mn is 0.35%, and < 0.02%, < 0.025%, all the other are Fe to S to P.The iron wire diameter is 2mm.The volume percent that the control iron wire accounts for material is 40%.
Get above-mentioned half iron wire chrome-faced, second half iron wire copper coating by ordinary method; The chromium plating iron wire and the copper coated iron wire that form respectively; The thickness of copper facing and chromium coating is 500 μ m, and two kinds of coating iron wire overall length are suitable.Press the ordinary method making of cleaning ball production and be with the mariages wire group of two kinds of wires mixing of coating, wire group diameter is 15cm.
In the preparation, what in casting ladle, add 0.8% the 75 ferrosilicon nucleating agents account for molten steel quality and 0.6% successively contains Dy rare earth vermiculizer, and all the other preparation processes are with embodiment one.
Embodiment three:
Vermicular graphite iron material matrix composition weight percentage: C is 3.4%, and Si is 3%, and Mn is 0.3%, and Dy is 0.7%, and < 0.03%, < 0.025%, all the other are Fe to S to P.
The weight percentage of iron wire composition is: C is 0.07%, and Si is 0.15%, and Mn is 0.3%, and < 0.02%, < 0.025%, all the other are Fe to S to P.Iron wire chrome-faced or copper.The iron wire diameter is 1.2mm.The volume percent that iron wire accounts for material is 20%.
Get above-mentioned half iron wire chrome-faced, second half iron wire copper coating by ordinary method; The chromium plating iron wire and the copper coated iron wire that form respectively; The thickness of copper facing and chromium coating is 200 μ m, and two kinds of coating iron wire overall length are suitable.Press the ordinary method making of cleaning ball production and be with the mariages wire group of two kinds of wires mixing of coating, wire group diameter is 12cm.
In the preparation, in casting ladle, add successively molten steel quality 0.7% 75 ferrosilicon nucleating agents and 0.5% contain Dy rare earth vermiculizer, all the other preparation processes are with embodiment one.
The comparative example four: proportioning raw materials is within the scope of the present invention instance not
Vermicular graphite iron material matrix composition weight percentage: C is 3%, and Si is 2.7%, and Mn is 0.05%, and Dy is 0.4%, and < 0.03%, < 0.025%, all the other are Fe to S to P.
Iron wire composition weight percentage is: C is 0.04%, and Si is 0.08%, and Mn is 0.2%, P<0.02%,
S<0.025%,All the other are Fe.The iron wire diameter is 0.8mm.The volume percent that iron wire accounts for material is 4%.
Also not copper facing of iron wire not chromium plating of surface.Press ordinary method system mariages (two strands of iron wires) the wire group that cleaning ball is produced, wire group diameter is 15cm.
The preparation process is with embodiment one.
The comparative example five: proportioning raw materials is within the scope of the present invention instance not
Vermicular graphite iron material matrix composition weight percentage: C is 3.7%, and Si is 4, and Mn is 0.5%, and Dy is 0.9%, and < 0.03%, < 0.025%, all the other are Fe to S to P.
The weight percentage of iron wire composition is: C is 0.1%, and Si is 0.3%, and Mn is 0.4%, and < 0.02%, < 0.025%, all the other are Fe to S to P.The iron wire diameter is 3mm.The volume percent that iron wire accounts for material is 45%.
Get all chromium plating of above-mentioned iron wire surface, the chromium plating iron wire of formation by ordinary method; The thickness of chromium coating is 600 μ m.Press ordinary method making mariages (two strands of chromium plating iron wires) the wire group that cleaning ball is produced, wire group diameter is 10cm.
The preparation process is with embodiment one.
Table 1
Visible by last table, C, Si, Mn increase in the chemical ingredients of vermicular cast iron and iron wire, are beneficial to the raising of material hardness.But too much, increase the fragility of body material.P and S increase, and increase the fragility of body material.
The increase of Dy not only is beneficial to the raising of hardness in the vermicular cast iron, and helps the toughness raising.But, too much cause the increase of Dy and C compound, reduce the toughness of material.
The increase of iron wire volume percent is beneficial to the raising of toughness of material.But too much, reduced the hardness of material, therefore also reduced the antifriction quality of material.
The thickness of copper facing and chromium coating increases, and is beneficial to the alloying of molten iron; Copper and chromium are difficult for fusing into molten iron in short-term, cause the waste of element but too much.
Claims (3)
1. antifriction vermicular graphite iron material, this material is a matrix with the vermicular cast iron, the wire group that in matrix, is distributing and forming by iron wire, used iron wire diameter is 1-2mm, and the diameter of wire group is 10-15cm, and the volume percent that iron wire accounts for material is 5-40%;
The following chemical components in percentage by weight of vermicular cast iron matrix: C is 3.3%～3.5%, and Si is 2.9%～3.3%, and Mn is 0.1-0.4%, and Dy is 0.5-0.8%, and < 0.03%, < 0.025%, all the other are Fe to S to P;
The following chemical components in percentage by weight of iron wire is: C is 0.05-0.09%, and Si is 0.1%～0.2%, and Mn is 0.25-0.35%, and < 0.02%, < 0.025%, all the other are Fe to S to P.
2. antifriction vermicular graphite iron material according to claim 1 is characterized in that: the CuC that also is distributed with in the matrix
2, Cr
3Si and Cr
23C
6Particle.
3. the preparation method of antifriction vermicular graphite iron material, it is characterized in that: it may further comprise the steps:
The preparation of chromium plating iron wire and copper coated iron wire: cut-off is 0.05-0.09% for 1-2mm, composition weight percentage: C directly, and Si is 0.1%～0.2%, and Mn is 0.25-0.35%; P < 0.02%; < 0.025%, all the other are the iron wire of Fe to S, and the volume percent that the control iron wire accounts for material is 5-40%;
Press ordinary method in half iron wire chrome-faced, second half iron wire copper coating; The chromium plating iron wire and the copper coated iron wire that form respectively; The thickness of coating is 100-500 μ m; The chromium plating iron wire that forms is suitable with copper coated iron wire length;
Ordinary method by cleaning ball production is respectively got rhizoid formation globular mixing mariages wire group with above-mentioned chromium plating iron wire and copper coated iron wire; Wire group's diameter is 10-15cm; Number of metal silk group is put into casting mold mo(u)ld bottom half die cavity; The tightness of wire group guarantees that by the volume percent decision that iron wire accounts for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, molten iron pouring is waited in the mould assembling back that finishes;
The preparation of vermicular graphite iron material matrix: percentage composition: C is 3.3%～3.5% by weight, and Si is 2.9%～3.3%, and Mn is 0.1-0.4%, and Dy is 0.5-0.8%, and < 0.03%, < 0.025%, all the other prepare burden for the vermicular cast iron of Fe S P; Wherein part Si, Dy and Fe add with follow-up mode; The vermicular cast iron raw material is fused into molten iron in induction furnace, teeming temperature is 1420-1460 ℃; Before the cast, in casting ladle, add successively molten steel quality 0.6-0.8% 75 ferrosilicon nucleating agents and 0.4-0.6% contain Dy rare earth vermiculizer, adopt and pour the method following current and pour in the fire bag; In the rare earth vermiculizer, percentage composition Dy is 25% by weight, and silicon is 25%, and all the other are iron; Remaining Dy amount in the vermicular graphite iron material adopts the dysprosium iron that contains Dy50% to replenish;
Above-mentioned vermicular cast iron molten iron is poured into the dry sand casting mold that wire group is housed, and liquid metal surrounds chromium plating iron wire and copper coated iron wire, cooled and solidified then, form with the vermicular cast iron be base wherein be distributed with the material that wire is rolled into a ball.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2611624C1 (en) * | 2016-01-12 | 2017-02-28 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный университет путей сообщения" (МИИТ) | High-strength alloyed antifriction cast iron |
| RU2611622C1 (en) * | 2016-01-12 | 2017-02-28 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный университет путей сообщения" (МИИТ) | High-strength cast iron for heat-treated cast case parts |
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| CN110904381B (en) * | 2019-12-30 | 2021-08-06 | 江西久旺汽车配件制造有限公司 | A kind of vermicular graphite cast iron material and its preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0335692A1 (en) * | 1988-04-01 | 1989-10-04 | Ube Industries, Ltd. | Fiber-reinforced metal composite |
| CN101314839A (en) * | 2008-06-13 | 2008-12-03 | 哈尔滨工业大学 | A reinforcement method for continuous fiber reinforced metal matrix composites |
| CN101705444A (en) * | 2009-11-09 | 2010-05-12 | 西安建筑科技大学 | Preparation process of high manganese steel based composite material |
-
2011
- 2011-01-14 CN CN201110007472A patent/CN102181810B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0335692A1 (en) * | 1988-04-01 | 1989-10-04 | Ube Industries, Ltd. | Fiber-reinforced metal composite |
| CN101314839A (en) * | 2008-06-13 | 2008-12-03 | 哈尔滨工业大学 | A reinforcement method for continuous fiber reinforced metal matrix composites |
| CN101705444A (en) * | 2009-11-09 | 2010-05-12 | 西安建筑科技大学 | Preparation process of high manganese steel based composite material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2611624C1 (en) * | 2016-01-12 | 2017-02-28 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный университет путей сообщения" (МИИТ) | High-strength alloyed antifriction cast iron |
| RU2611622C1 (en) * | 2016-01-12 | 2017-02-28 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный университет путей сообщения" (МИИТ) | High-strength cast iron for heat-treated cast case parts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102181810A (en) | 2011-09-14 |
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