CN101092674A - Nitrogen contained austenitic cast iron in use for beset ring of piston - Google Patents
Nitrogen contained austenitic cast iron in use for beset ring of piston Download PDFInfo
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- CN101092674A CN101092674A CN 200710015395 CN200710015395A CN101092674A CN 101092674 A CN101092674 A CN 101092674A CN 200710015395 CN200710015395 CN 200710015395 CN 200710015395 A CN200710015395 A CN 200710015395A CN 101092674 A CN101092674 A CN 101092674A
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Abstract
This invention discloses a cast iron material for piston inlay ring, which comprises: N 0.0005-0.2 wt.%, C 2.0-3.6 wt.%, Si 1.1-3.5 wt.%, Mn 2.8-9.0 wt.%, Ni 1.2-13.5 wt.%, Cu 1.1-8 wt.%, Cr 0-2.3 wt.%, Ti 0-2 wt.%, Mo, 0-2 wt.%, V 0-2 wt.%, Zr 0-2 wt.%, Al 0-2 wt.%, P less than or equal to 0.2 wt.%, S less than or equal to 0.2 wt.%, and Fe as balance. The cast iron material is prepared by: mixing the above components, smelting in an electric furnace, incubating, and pouring into a mold to obtain roughcast for casting inlay ring. The tensile strength (deltab), bending strength (deltabb) and Brinell hardness of the cast iron material are greater than or equal to 130 MPa, greater than or equal to 300 MPa and HB 120-170, respectively. The cast iron material has such advantages as low Ni content; lwo cost and high wear resistance, and can satisfy the mechanical property requirements of piston inlay ring of high-performance engine.
Description
Technical field
The present invention relates to a kind of cast iron materials, especially a kind of cast iron materials that is used for piston ring carrier belongs to the cast material technical field.
Background technology
Piston ring carrier generally adopts the austenitic iron material, can effectively strengthen the wear resistance of the piston first road annular groove, prolongs the work-ing life of piston.On high-performance enginer, all generally adopted this piston ring carrier at present.The quality good or not of piston ring carrier directly has influence on the service condition of piston and the performance of whole engine, and the piston ring carrier alloy material is the key that influences its performance.The austenitic iron material that present piston ring carrier adopts is the high-nickel austenitic cast iron material, and nickel content is 13.5-17.5%, and price is comparatively expensive, and wear resistance is relatively poor.
Summary of the invention
At the deficiency that existing piston ring carrier manufactured materials exists, the invention provides that a kind of production cost is low, wear resisting property good, the nitrogen austenite cast iron materials that is used for piston ring carrier that nickel content is lower on mechanical property.
The present invention is achieved by the following technical solutions:
The component and the weight percent thereof that are used for the nitrogen austenite cast iron materials of piston ring carrier are: nitrogen, 0.0005-0.2%; Carbon, 2.0-3.6%; Silicon, 1.1-3.5%; Manganese, 2.8-9.0%; Nickel, 1.2-13.5%; Copper, 1.1-8%; Chromium, 0-2.3%; Phosphorus≤0.2%; Sulphur≤0.2%; Surplus is an iron.
The component and the weight percent thereof that are used for the nitrogen austenite cast iron materials of piston ring carrier are: nitrogen, 0.0005-0.2%; Carbon, 2.0-3.6%; Silicon, 1.1-3.5%; Manganese, 2.8-9.0%; Nickel, 1.2-13.5%; Copper, 1.1-8%; Chromium, 0-2.3%; Titanium, 0-2%; Molybdenum, 0-2%; Vanadium, 0-2%; Zirconium, 0-2%; Aluminium, 0-2%; Phosphorus≤0.2%; Sulphur≤0.2%; Surplus is an iron.
The mechanical property of the foundry goods of described material is tensile strength δ
b〉=130MPa, bending strength δ
Bb〉=300MPa, Brinell hardness HB120-170.
The metallographic structure of this cast iron materials is: (1) matrix: be austenite structure, equally distributed tiny alloy carbide and phosphide are arranged above it, do not occur but do not allow successive reticulattion, carbide and phosphide total amount are less than 12%.(2) graphite: be mainly A type+Type B, allow a spot of D type, E type.The D type is less than 10%, and the E type is less than 30%, and D type and E type graphite total amount are less than 40%.Graphite length 15-200um.
This average coefficient of linear expansion λ 〉=18 * 10 of nitrogen austenite cast iron materials under 20-200 ℃ of temperature that are used for piston ring carrier
-6/ ℃, identical with the linear expansivity of existing high-nickel austenitic cast iron material.Because average coefficient of linear expansion is that can it as the basic index of piston ring carrier material, described this low nickel material has satisfied the requirement of the mechanical property of high-performance enginer upper piston edge circle, has advantages such as production cost is low, wear resisting property is good.
Embodiment
Embodiment 1: the present invention is a kind of nitrogen austenite cast iron materials that is used for piston ring carrier, and the weight percent of its chemical composition is a nitrogen 0.01%; Carbon 2.4%; Silicon 3.0%; Manganese 3.6%; Nickel 3.2%; Copper 4.1%; Chromium 2.3%; Phosphorus 0.09%; Sulphur 0.1%; Surplus is an iron.
Adopt electric furnace to carry out melting the above-mentioned various required alloying ingredients and the pig iron, Deng founding about 1500 ℃, obtain molten iron, above-mentioned then molten iron is after inoculation, pour into the rotation the rotary casting mould in, promptly obtain after the cooling this cast iron alloy edge circle cast blank.After it is further carried out mechanical workout, can be bumped into piston, reach the purpose that improves the piston first road annular groove wear resistance.
The mechanical property that records above-mentioned casting edge circle is: tensile strength δ
b〉=130MPa, bending strength δ
Bb〉=300MPa, Brinell hardness HB120-170.Metallographic structure is: (1) matrix: be austenite structure, equally distributed tiny alloy carbide and phosphide are arranged above it, do not occur but do not allow successive reticulattion, carbide and phosphide total amount are less than 12%.(2) graphite: be mainly A type+Type B, allow a spot of D type, E type.The D type is less than 10%, and the E type is less than 30%, and D type and E type graphite total amount are less than 40%.Graphite length 15-200um.Average coefficient of linear expansion λ 〉=18 * 10 under 20-200 ℃ of temperature
-6/ ℃.
Embodiment 2: nitrogen 0.1%; Carbon 2.9%; Silicon 2.4%; Manganese 5.2%; Nickel 6.4%; Copper 5.1%; Chromium 1.5%; Titanium 0.5%; Molybdenum 0.8%; Vanadium 0.4%; Zirconium 0.5%; Aluminium 1.1%; Phosphorus 0.1%; Sulphur 0.08%; Surplus is an iron.Adopt electric furnace to carry out melting the above-mentioned various required alloying ingredients and the pig iron, Deng founding about 1500 ℃, obtain molten iron, above-mentioned then molten iron is after inoculation, pour into the rotation the rotary casting mould in, promptly obtain after the cooling this cast iron alloy edge circle cast blank.After it is further carried out mechanical workout, can be bumped into piston, reach the purpose that improves the piston first road annular groove wear resistance.
The mechanical property that records above-mentioned casting edge circle is: tensile strength δ
b〉=130MPa, bending strength δ
Bb〉=300MPa, Brinell hardness HB120-170.Metallographic structure is: (1) matrix: be austenite structure, equally distributed tiny alloy carbide and phosphide are arranged above it, do not occur but do not allow successive reticulattion, carbide and phosphide total amount are less than 12%.(2) graphite: be mainly A type+Type B, allow a spot of D type, E type.The D type is less than 10%, and the E type is less than 30%, and D type and E type graphite total amount are less than 40%.Graphite length 15-200um.Average coefficient of linear expansion λ 〉=18 * 10 under 20-200 ℃ of temperature
-6/ ℃.
Embodiment 3: nitrogen 0.2%; Carbon 3.4%; Silicon 3.2%; Manganese 8.2%; Nickel 12.4%; Copper 7.1%; Chromium 1.8%; Titanium 1.5%; Molybdenum 1.8%; Vanadium 1.4%; Zirconium 1.5%; Aluminium 1.6%; Phosphorus 0.16%; Sulphur 0.12%; Surplus is an iron.Adopt electric furnace to carry out melting the above-mentioned various required alloying ingredients and the pig iron, Deng founding about 1500 ℃, obtain molten iron, above-mentioned then molten iron is after inoculation, pour into the rotation the rotary casting mould in, promptly obtain after the cooling this cast iron alloy edge circle cast blank.After it is further carried out mechanical workout, can be bumped into piston, reach the purpose that improves the piston first road annular groove wear resistance.
The mechanical property that records above-mentioned casting edge circle is: tensile strength δ
b〉=130MPa, bending strength δ
Bb〉=300MPa, Brinell hardness HB120-170.Metallographic structure is: (1) matrix: be austenite structure, equally distributed tiny alloy carbide and phosphide are arranged above it, do not occur but do not allow successive reticulattion, carbide and phosphide total amount are less than 12%.(2) graphite: be mainly A type+Type B, allow a spot of D type, E type.The D type is less than 10%, and the E type is less than 30%, and D type and E type graphite total amount are less than 40%.Graphite length 15-200um.Average coefficient of linear expansion λ 〉=18 * 10 under 20-200 ℃ of temperature
-6/ ℃.
Claims (3)
1, be used for the nitrogen austenite cast iron materials of piston ring carrier, it is characterized in that: the component of described material and weight percent thereof are: nitrogen, 0.0005-0.2%; Carbon, 2.0-3.6%; Silicon, 1.1-3.5%; Manganese, 2.8-9.0%; Nickel, 1.2-13.5%; Copper, 1.1-8%; Chromium, 0-2.3%; Phosphorus≤0.2%; Sulphur≤0.2%; Surplus is an iron.
2, be used for the nitrogen austenite cast iron materials of piston ring carrier, it is characterized in that: the component of described material and weight percent thereof are: nitrogen, 0.0005-0.2%; Carbon, 2.0-3.6%; Silicon, 1.1-3.5%; Manganese, 2.8-9.0%; Nickel, 1.2-13.5%; Copper, 1.1-8%; Chromium, 0-2.3%; Titanium, 0-2%; Molybdenum, 0-2%; Vanadium, 0-2%; Zirconium, 0-2%; Aluminium, 0-2%; Phosphorus≤0.2%; Sulphur≤0.2%; Surplus is an iron.
3, according to claim 1 or the described nitrogen austenite cast iron materials that is used for piston ring carrier of claim 2, it is characterized in that: the mechanical property of the foundry goods of described material is tensile strength δ
b〉=130MPa, bending strength δ
Bb〉=300MPa, Brinell hardness HB120-170.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100153952A CN100465320C (en) | 2007-07-20 | 2007-07-20 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100153952A CN100465320C (en) | 2007-07-20 | 2007-07-20 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092674A true CN101092674A (en) | 2007-12-26 |
| CN100465320C CN100465320C (en) | 2009-03-04 |
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|---|---|---|---|
| CNB2007100153952A Expired - Fee Related CN100465320C (en) | 2007-07-20 | 2007-07-20 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
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| CN102102640A (en) * | 2011-01-04 | 2011-06-22 | 大连市金州区天源铸造机械厂 | Cast iron electromechanical annular cover and preparation method thereof |
| CN103695811A (en) * | 2013-12-30 | 2014-04-02 | 金陵科技学院 | Alloy |
| CN103882309A (en) * | 2014-02-18 | 2014-06-25 | 芜湖市鸿坤汽车零部件有限公司 | Alloy material for manufacturing worm wheel and preparation method of alloy material |
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| CN104087873A (en) * | 2014-07-14 | 2014-10-08 | 靖江市新程汽车零部件有限公司 | Automobile skylight reinforcing plate |
| CN104164608A (en) * | 2013-05-19 | 2014-11-26 | 滨州亚泰雅德动力配件有限公司 | Cast iron material for aluminum piston wear resistant insert ring |
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| CN85100066A (en) * | 1985-04-01 | 1986-07-09 | 清华大学 | Low austenitic spheroidal graphite cast iron |
| CN86101804B (en) * | 1986-03-22 | 1988-11-09 | 天津市交通局科学技术研究所 | Piston ring material |
| JPH01195258A (en) * | 1988-01-29 | 1989-08-07 | Aisin Takaoka Ltd | Austenitic cast iron having high vibration damping capacity |
| JPH01252755A (en) * | 1988-03-31 | 1989-10-09 | Ueda Brake Kk | Alloy cast iron brake block for vehicle |
| DE19654893C2 (en) * | 1996-07-25 | 1999-06-10 | Federal Mogul Burscheid Gmbh | Piston rings of internal combustion engines made of a cast iron alloy |
| NO306169B1 (en) * | 1997-12-08 | 1999-09-27 | Elkem Materials | Cast iron grafting agent and method of making grafting agent |
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| CN100465320C (en) | 2009-03-04 |
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