EP2518174B1 - Cgi-gusseisen und herstellungsverfahren dafür - Google Patents
Cgi-gusseisen und herstellungsverfahren dafür Download PDFInfo
- Publication number
- EP2518174B1 EP2518174B1 EP10839697.9A EP10839697A EP2518174B1 EP 2518174 B1 EP2518174 B1 EP 2518174B1 EP 10839697 A EP10839697 A EP 10839697A EP 2518174 B1 EP2518174 B1 EP 2518174B1
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- Prior art keywords
- cast iron
- magnesium
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- present
- ladle
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- 229910001018 Cast iron Inorganic materials 0.000 title claims description 122
- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000011777 magnesium Substances 0.000 claims description 80
- 229910052749 magnesium Inorganic materials 0.000 claims description 61
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 59
- 239000010949 copper Substances 0.000 claims description 35
- 229910002804 graphite Inorganic materials 0.000 claims description 31
- 239000010439 graphite Substances 0.000 claims description 31
- 229910052799 carbon Inorganic materials 0.000 claims description 29
- 239000011572 manganese Substances 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 238000010079 rubber tapping Methods 0.000 claims description 18
- 229910052718 tin Inorganic materials 0.000 claims description 17
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 14
- 239000011593 sulfur Substances 0.000 claims description 14
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 22
- 229910001126 Compacted graphite iron Inorganic materials 0.000 description 13
- 229910001060 Gray iron Inorganic materials 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 239000002054 inoculum Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910001562 pearlite Inorganic materials 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001584785 Anavitrinella pampinaria Species 0.000 description 1
- 101100437784 Drosophila melanogaster bocks gene Proteins 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- 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
- C21C1/08—Manufacture of cast-iron
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- 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
Definitions
- the present invention relates to cast iron and a method of producing the same, and more particularly, to cast iron having an improved casting property and stable tensile strength and yield strength by controlling the contents of components added to iron, and a method of producing the cast iron.
- Cast iron according to the present invention corresponds to hypereutectic compacted graphite iron (CGI) cast iron that can be applied to the cylinder block of diesel engines with high output.
- CGI hypereutectic compacted graphite iron
- Cast iron is the material that is generally used for cylinder blocks in the related art, common grade cast iron is usually gray cast iron.
- the gray cast iron is called gray cast iron because carbon is decomposed and produced into graphite in casting and the surface shows gray.
- cast iron has differences in accordance with the shape, size, and distribution state of graphite contained in the base and the tensile strength of gray cast iron generally called cast iron is about 147.1 to 196.1MPa.
- the gray cast iron has a limit in use for the material of the cylinder block of engines having high explosive pressure, because the strength is low although a cast property, damping capacity, and thermal conductivity are excellent.
- the spherical graphite cast iron is cast iron of which the toughness is improved by changing graphite shown in common cast iron (gray cast iron) into a spherical structure from the original foliaceous structure.
- the spherical graphite cast iron is also called nodular cast iron or ductile cast iron.
- the spherical graphite cast iron has excellent abrasion resistance, heat resistance, corrosion resistance, has a higher modulus of elasticity than that of common gray cast iron, has a Brinell Hardnes of even about 200, and also has a cutting property better than that of common cast iron having the same hardness.
- the spherical graphite cast iron has high strength required for cylinder blocks, but has an insufficient casting property and low thermal conductivity to be produced in a complicate shape, such that it has a limit in use for cylinder bocks having complicated shapes.
- CGI Cosmetic Graphite Iron
- WO 01/38593 A1 discloses a cast iron alloy comprising 3.0-3.8% C, 0.6-2.5% Si, 0.2-0.65% Mn, 0.01-0.1% Sn, ⁇ 0.025% S, 0.001-0.020% Mg, 0.1-1.2% Cu, 0.04-0.2% Cr, and balance of Fe and incidental impurities.
- the CGI cast iron may be produced by accurately controlling the content of magnesium (Mg) when tapping molten spherical graphite cast iron, which is produced by melting spherical graphite cast iron, into a ladle for carrying original molten metal produced by a furnace to another place.
- Mg magnesium
- the present invention provides cast iron of which tensile strength and yield strength are controlled within the ranges of 500 to 600MPa and 350 to 450MPa, respectively, by controlling the contents of carbon (C), silicon (Si), manganese (Mn), copper (Cu), tin (Sn), and magnesium (Mg) with a range that ensures stable properties without causing poor casting.
- An object of the present invention is to provide cast iron having stable properties and structure by accurately controlling the amount of magnesium (Mg).
- Mg magnesium
- Another object of the present invention is to establish a chemical composition and a production method which make it possible to producing cast iron for a cylinder block that can be applied to high-output and high-power diesel engines by providing stable tensile strength and yield strength and appropriate hardness.
- the present invention provides a cast iron for use with cylinder block of an engine comprising carbon (c) of 3.65 to 3.75 wt%, silicon (Si) of 2.0 to 2.25 wt%, manganese (Mn) of 0.3 to 0.6 wt%, copper (Cu) of 1.2 to 1.4 wt%, tin (Sn) of 0.07 to 0.10 wt%, magnesium (Mg) of 0.008 to 0.018 wt%, phosphorus (P) of 0.04 wt% or less, sulfur (S) of 0.02 wt% or less, and the balance of iron (Fe).
- tensile strength of the cast iron is 500 to 600MPa. Further, according to another exemplary embodiment of the present invention, yield strength of the cast iron is in the range of 350 to 450MPa. Meanwhile, a Brinell Hardness value (BHW) of the cast iron is 255 to 280.
- BHW Brinell Hardness value
- CE Carbon Equivalent
- nodularity of graphite produced by the carbon is 5 to 20% in the cast iron.
- the present invention provides a method of producing cast iron, comprising: producing original molten cast iron by melting a cast iron material, which contains carbon (C) of 3.65 to 3.75 wt%, silicon (Si) of 2.0 to 2.25 wt%, manganese (Mn) of 0.3 to 0.6 wt%, phosphorous (P) of 0.04 wt% less, sulfur (S) of 0.02 wt% or less, and the balance of iron (Fe), in a furnace; providing copper (Cu) of 1.2 to 1.4 wt%, tin (Sn) of 0.07 to 0.10 wt%, and magnesium (Mg) of 0.008 to 0.018 wt% in a ladle that is a container for tapping the original molten cast iron melted in a furnace; producing molten cast iron by tapping the produced original molten cast iron with the ladle with copper (Cu) of 1.2 to 1.4 wt%, tin (Sn) of 0.07 to 0.10 w
- CGI cast iron with stable mechanical properties is achieved by putting a predetermined amount of magnesium (Mg) and appropriate amounts of copper (Cu) and tin (Sn) into a ladle, which is a container for tapping an original molten cast iron melted in a furnace, tapping the original molten cast iron into the laddle, and crystallizing the graphite to be stable CGI.
- Mg magnesium
- Cu copper
- Sn tin
- CE Carbon Equivalent
- the tapping temperature of the original molten metal is adjusted to be 1520°C.
- the cast iron according to the present invention it is possible to estimate nodularity of graphite contained in cast iron from the content of magnesium contained in the molten cast iron and to estimate the range of strength according to the nodularity.
- the content of magnesium may depend on the necessary strength and the content is 0.008 to 0.018 wt% to be applied to the cylinder block of high-output diesel engines.
- the present invention it is possible to provide cast iron with tensile strength in the range of 500 to 600 MPa, yield strength in the range of 350 to 450 Mpa, and Brinell Hardness in the range of 255 to 280, by precisely controlling the amount of magnesium (Mg) and controlling the amounts of copper (Cu) and tin (Sn).
- the cast iron according to the present invention has stable tensile strength and yield strength and appropriate hardness, the cast iron can be used to manufacture cylinder blocks that can be applied to high-output and high-power diesel engines.
- CGI cast iron having a uniform structure and strength that is high enough to be used for the cylinder block of high-power diesel engines, by precisely controlling the amount of magnesium (Mg). Further, it is possible to produce CGI cast iron having various hardness and tensile strength by controlling the amount of copper (Cu) and tin (Sn) that is alloy elements.
- Cast iron according to the present invention contains carbon (c) of 3.65 to 3.75 wt%, silicon (Si) of 2.0 to 2.25 wt%, manganese (Mn) of 0.3 to 0.6 wt%, copper (Cu) of 1.2 to 1.4 wt%, tin (Sn) of 0.07 to 0.10 wt%, magnesium (Mg) of 0.008 to 0.018 wt%, phosphorus (P) of 0.04 wt% or less, sulfur (S) of 0.02 wt% or less, and the balance of iron (Fe).
- the basic material of the cast iron is iron (Fe).
- Carbon is added for crystallization of compacted graphite, and when the content of carbon in cast iron is less than 3.65 wt%, a chilling behavior is observed in a thin-walled part, and when it is above 3.75 wt%, graphite nodularity retraction and poor flow are generated. Therefore, the content of carbon is limited within 3.65 to 3.75 wt% in the present invention to prevent the defects in high-strength cylinder block having various thicknesses.
- Silicon maximizes the amount of crystallization of compacted graphite and increases strength of cast iron when being added at the optimum ratio with carbon.
- the content of silicon is less than 2.0 wt%, the amount of crystallization of compacted graphite decreases, and when it is above 2.25 wt%, ductility decreases, such that the content is set within 2.0 to 2.25 wt%.
- Manganese is added to make graphite fine and stabilize pearlite, and in the cast iron according to the present invention, when the content of manganese is less than 0.3 wt%, hardness decreases, and when it is above 0.6 wt%, brittleness increases, such that the content is set within 0.3 to 0.6 wt%.
- Copper is an element for compacted graphitization and promote creation of pearlite and makes it fine, such that it is an element for ensuring strength.
- iron according to the present invention when the content of copper is less than 1.2 wt%, lack of strength is caused, but even if the content is above 1.4 wt%, there is no additional effect corresponding to the excessive amount. Therefore, the content of copper is set within 1.2 to 1.4 wt% in the present invention.
- Tins is a very strong element for promoting creation of pearlite and added to improve strength, similar to copper.
- the content of tin is less than 0.07 wt%, strength decreases and when it is added over 0.10 wt%, brittleness rapidly increases, such that the content is set within 0.07 to 0.10 wt%.
- Magnesium has function of graphite nodularity and promotes creation and growth of the nucleus of compacted graphite.
- the content of magnesium is less than 0.008 wt%, graphite becomes flaky, and when it is above 0.018 wt%, nodularity of graphite increases and poor retraction is caused, such that the content is limited within 0.008 to 0.018 wt%.
- Phosphorous is also a kind of impurity naturally added from the air in the process of producing cast iron. Phosphorous stabilizes pearlite but when the content is above 0.04 wt%, brittleness rapidly increases and this is in association with poor retraction due to segregation. Therefore, in the cast iron according to the present invention, it is preferable to maintain the content of phosphorous at 0.04 wt% or less.
- Sulfur functions as a creation site of compacted graphite, but when the content is above 0.02 wt%, it is required to add more magnesium in order to create compacted graphite. That is, when the content of sulfur increases above a predetermined range, with the content is magnesium limited, compacted graphite becomes flaky. Therefore, it is necessary to maintain the content of sulfur at 0.02 wt% or less in the cast iron according to the present invention.
- Ferrum is the main substance of cast iron according to the present invention. The balance except for the components described above is ferrum.
- carbon equivalent is 4.35 to 4.5.
- the carbon equivalent is defined by carbon + (silicon + phosphorous) X 1/3 and the value may be adjusted to control the properties and quality of the product.
- tensile strength of the cast iron is 500 to 600MPa and yield strength is 350 to 450MPa.
- nodularity of graphite produced by the carbon is 5 to 20%.
- a process of producing cast iron according to the present invention is described with reference to FIG. 4 .
- original molten cast iron 110 is produced by melting a cast iron material containing carbon (C) of 3.65 to 3.75 wt%, silicon (Si) of 2.0 to 2.25 wt%, manganese (Mn) of 0.3 to 0.6 wt%, phosphorous (P) of above 0 and 0.04 wt% less, sulfur (S) of above 0 and 0.02 wt% or less, and the balance of iron (Fe), in a furnace 100.
- C carbon
- Si silicon
- Mn manganese
- P phosphorous
- S sulfur
- Fe sulfur
- a ladle 200 with the other components 210 of copper (Cu) of 1.2 to 1.4 wt%, tin (Sn) of 0.07 to 0.10 wt%, and magnesium (Mg) of 0.008 to 0.018 wt% is prepared, in which the ladle 200 is a container for tapping the original molten cast iron melted in a furnace.
- the molten cast iron 110 is produced by tapping the produced original molten cast iron with the ladle 200 with copper (Cu) of 1.2 to 1.4 wt%, tin (Sn) of 0.07 to 0.10 wt%, and magnesium (Mg) of 0.008 to 0.018 wt%.
- Cu copper
- Sn tin
- Mg magnesium
- the tapping temperature can be adjusted to be 1,520°C.
- the CE Carbon Equivalent
- the CE may be adjusted to be 4.35 to 4.5 in the original molten cast iron.
- the amount of magnesium to be added is determined by checking the content of magnesium contained in the molten cast iron in the ladle 200.
- the original molten cast iron was carried to the ladle with the magnesium, a predetermined amount of magnesium is contained in the molten cast iron in the ladle. Nevertheless, the content of magnesium contained in the molten cast iron in the ladle is checked again to more precisely controlled the content of magnesium in consideration of loss of magnesium while carrying the ladle, and when it is determined that it needs to add magnesium, magnesium is added again.
- a thermal analysis system 300 may be used to check the content of magnesium.
- Magnesium of which the amount to be added is determined is added to the molten cast iron in the ladle. According to an exemplary embodiment of the present invention, it may be possible to add magnesium, using a wire shape of magnesium 500.
- Another inoculant that is generally used in a process of producing cast iron may be added with magnesium.
- a silicon-based inoculant may be added.
- the silicon-based inoculant may be obtained from those on the market.
- the kind and content of the inoculant may be easily selected and determined by those skilled in the art, if necessary.
- Other inoculants may also be shaped in a wire type 500.
- Cast iron is completed by injecting the molten metal with magnesium into a mold 400.
- Cast iron according to Examples 1 to 10 and Comparative example 1 to 10 was produced in accordance with the composition in the following Table 1 [Table 1] Unit: wt% Items C Si Mn Cu Sn Mg P S Fe Example 1 3.650 2.240 0.440 1.360 0.090 0.017 0.031 small balance Example 2 3.680 2.190 0.400 1.340 0.090 0.010 0.031 small balance Example 3 3.700 2.110 0.390 1.410 0.080 0.011 0.031 small balance Example 4 3.710 2.080 0.400 1.330 0.100 0.009 0.034 small balance Example 5 3.680 2.140 0.380 1.260 0.080 0.011 0.031 small balance Example 6 3.680 2.180 0.430 1.340 0.090 0.018 0.026 small balance Example 7 3.710 2.130 0.400 1.290 0.070 0.013 0.031 small balance Example 8 3.690 2.050 0.400 1.350 0.100 0.014 0.033 small balance Example 9 3.710 2.130 0.400 1.290 0.070 0.013 0.031 small balance Example 10 3.700 2.140 0.430
- S is an element that is unavoidably contained in the raw material of cast iron and the process of producing cast iron, such that it is not separately added but the content is maintained at 0.02 wt% or less.
- the content of carbon was adjusted by measuring the CE by using a CE meter before tapping and temperature was fitted to 1,146°C with respect to TL (Liquidous Temperature), thereby preparing original molten metal.
- a ladle was prepared by adding magnesium (Mg), copper (Cu), and tin (Sn) and the original molten metal was tapped to the ladle while the tapping temperature is uniformly maintained around about 1,520°C .
- the amount of magnesium to be added in consideration of the content of magnesium that will be finally contained was determined by thermally analyzing the tapped original molten metal, the alloy amount of a wire type of magnesium was injected into a mold at 1,410°C after the alloy elements are adjusted.
- Carbon equivalent (CE), tensile strength (TS), yield strength (YS), hardness (Hardness), and nodularity of the cast iron produced in accordance with the composition in Table 1 were measured and shown in Table 2.
- the hardness is Brinell Hardness and an HBW brinell hardness value.
- the tensile strength was within 500 to 600 MPa(N/mm 2 ), the yield strength was 350 to 450 MPa(N/mm 2 ), and the HBW brinell hardness value was 255 to 280.
- the cast iron according to the present invention has stable tensile strength and yield strength and appropriate hardness, such that the cast iron may be easily used to manufacture a cylinder block that can be applied to high-output and high-power diesel engines.
- nodularity was in the range of 5 to 20% in the CGI cast iron according to the present invention.
- FIGS. 2 and 3 can be referred for the relationship between tensile strength and yield strength according to nodularity of the CGI cast iron produced as described above. As shown in FIGS. 2 and 3 , it is possible to provide the cast iron of which the tensile strength and the yield strength are in the ranges of 500 to 600MPa and 350 to 450Mpa, respectively, with good quality of product.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Claims (9)
- Gusseisen zur Verwendung mit einem Zylinderblock eines Motors, enthaltend:- Kohlenstoff (C) zu 3,65 bis 3,75 Gew.-%;- Silicium (Si) zu 2,0 bis 2,25 Gew.-%;- Mangan (Mn) zu 0,3 bis 0,6 Gew.-%;- Kupfer (Cu) zu 1,2 bis 1,4 Gew.-%;- Zinn (Sn) zu 0,07 bis 0,10 Gew.-%- Magnesium (Mg) zu 0,008 bis 0,018 Gew.-%;- Phosphor (P) zu 0,04 Gew.-% oder weniger;- Schwefel (S) zu 0,02 Gew.-% oder weniger; sowie- Eisen (Fe), das den Rest ausmacht.
- Gusseisen nach Anspruch 1, wobei die Zugfestigkeit 500 bis 600 MPa beträgt.
- Gusseisen nach Anspruch 1, wobei die Streckgrenze 350 bis 450 MPa beträgt.
- Gusseisen nach Anspruch 1, wobei das Kohlenstoffäquivalent 4,35 bis 4,5 beträgt.
- Gusseisen nach Anspruch 1, wobei der Kohlenstoff sich derart entwickelt, dass er zu 5 bis 20 % als Kugelgraphit vorliegt.
- Verfahren zur Herstellung von Gusseisen, umfassend:- Herstellen eines flüssigen Gusseisenausgangsprodukts, indem in einem Ofen ein Gusseisenmaterial zum Schmelzen gebracht wird, das Kohlenstoff (C) zu 3,65 bis 3,75 Gew.-%, Silicium (Si) zu 2,0 bis 2,25 Gew.-%, Mangan (Mn) zu 0,3 bis 0,6 Gew.-%, Phosphor zu mehr als 0 und höchstens 0,04 Gew.-%, Schwefel (S) zu mehr als 0 und höchstens 0,02 Gew.-% enthält, wobei Eisen (Fe) den Rest ausmacht;- Bereitstellen von Kupfer (Cu) zu 1,2 bis 1,4 Gew.-%, Zinn (Sn) zu 0,07 bis 0,10 Gew.-% und Magnesium (Mg) zu 0,008 bis 0,018 Gew-% in einem Gießtiegel, bei dem es sich um einen Behälter handelt, der zum Abstechen des flüssigen Gusseisenausgangsprodukts dient, das in einem Ofen zum Schmelzen gebracht wurde;- Herstellen von flüssigem Gusseisen, indem das herstellte flüssige Gusseisenausgangsprodukt mittels des Gießtiegels mit Kupfer (Cu) zu 1,2 bis 1,4 Gew.-%, Zinn (Sn) zu 0,07 bis 0,10 Gew.-% und Magnesium (Mg) zu 0,008 bis 0,018 Gew-% abgestochen wird;- Bestimmen der Menge an Magnesium, die hinzugefügt werden muss, indem der Gehalt an Magnesium bestimmt wird, den das flüssige Gusseisen in dem Gießtiegel aufweist;- Hinzufügen von Magnesium, wobei die davon hinzuzufügende Menge unter Bezugnahme auf das flüssige Gusseisen in dem Gießtiegel bestimmt wird; und- Einleiten des flüssigen Gusseisens, zu dem das Magnesium hinzugefügt wurde, in eine Gussform.
- Verfahren nach Anspruch 6, wobei das Kohlenstoffäquivalent des flüssigen Gusseisenausgangsprodukts 4,35 bis 4,5 beträgt.
- Verfahren nach Anspruch 6, wobei die Abstichtemperatur derart eingestellt wird, dass sie 1.520 °C beträgt.
- Verfahren nach Anspruch 6, wobei das Magnesium hinzugefügt wird, indem beim Hinzufügen des Magnesiums ein drahtförmiges Magnesium verwendet wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090128817A KR101605905B1 (ko) | 2009-12-22 | 2009-12-22 | Cgi 주철 및 그 제조방법 |
PCT/KR2010/008730 WO2011078500A2 (ko) | 2009-12-22 | 2010-12-08 | Cgi 주철 및 그 제조방법 |
Publications (3)
Publication Number | Publication Date |
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EP2518174A2 EP2518174A2 (de) | 2012-10-31 |
EP2518174A4 EP2518174A4 (de) | 2014-05-07 |
EP2518174B1 true EP2518174B1 (de) | 2015-07-22 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP10839697.9A Active EP2518174B1 (de) | 2009-12-22 | 2010-12-08 | Cgi-gusseisen und herstellungsverfahren dafür |
Country Status (5)
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US (1) | US20120301346A1 (de) |
EP (1) | EP2518174B1 (de) |
KR (1) | KR101605905B1 (de) |
CN (2) | CN102666896B (de) |
WO (1) | WO2011078500A2 (de) |
Families Citing this family (7)
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US9091345B2 (en) * | 2011-11-30 | 2015-07-28 | Federal-Mogul Corporation | High modulus wear resistant gray cast iron for piston ring applications |
CN103195689A (zh) * | 2013-04-24 | 2013-07-10 | 东莞市金瑞五金制品有限公司 | 一种压缩机 |
KR102279874B1 (ko) * | 2014-12-24 | 2021-07-20 | 두산인프라코어 주식회사 | 구상 흑연 주철 및 이의 제조방법, 이로부터 제조된 유압기기용 부품 |
KR102388131B1 (ko) * | 2015-02-04 | 2022-04-19 | 현대두산인프라코어(주) | 컴팩트 흑연 주철 및 이를 포함하는 엔진 부품 |
WO2018079887A1 (ko) * | 2016-10-28 | 2018-05-03 | 한국생산기술연구원 | 편상 흑연 주철 및 주물과 그 제조방법 |
CN112322962B (zh) * | 2020-11-06 | 2022-04-12 | 中原内配集团股份有限公司 | 一种蠕墨铸铁及其制备方法 |
CN114836680A (zh) * | 2021-02-01 | 2022-08-02 | 上海海立电器有限公司 | 铸件材料、压缩机气缸及其铸造方法、转子式压缩机 |
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US2690392A (en) * | 1947-03-22 | 1954-09-28 | Int Nickel Co | Process for producing improved cast iron |
US2943932A (en) * | 1957-06-10 | 1960-07-05 | Gen Motors Corp | Boron-containing ferrous metal having as-cast compacted graphite |
US4164148A (en) * | 1978-05-01 | 1979-08-14 | Laforet Henry A | Method for determining sulfur content of cast iron |
JP2624886B2 (ja) * | 1990-09-19 | 1997-06-25 | 株式会社日立製作所 | エレベータ装置 |
SE502227C2 (sv) * | 1993-12-30 | 1995-09-18 | Sintercast Ab | Förfarande för kontinuerligt tillhandahållande av förbehandlat smält järn för gjutning av föremål av kompaktgrafitjärn |
JP2894300B2 (ja) * | 1996-11-15 | 1999-05-24 | 株式会社日立製作所 | コンパクト・バーミキュラ黒鉛鋳鉄 |
US20030024608A1 (en) * | 1997-10-14 | 2003-02-06 | Camcast Industries Pty., Ltd. | Iron alloy containing molybdenum |
SE520028C2 (sv) * | 1998-07-03 | 2003-05-13 | Sintercast Ab | Förfarande för framställning av kompaktgrafitjärnalster, detta alster, samt användning av kompaktgrafitjärnlegering |
JP3812925B2 (ja) * | 1998-07-24 | 2006-08-23 | 日産ディーゼル工業株式会社 | エンジンケース用コンパクトバーミキュラ黒鉛鋳鉄 |
SE9904257D0 (sv) * | 1999-11-23 | 1999-11-23 | Sintercast Ab | New cast iron alloy |
BR0105987B1 (pt) * | 2001-11-27 | 2009-08-11 | ferro fundido vermicular de alta usinabilidade. | |
KR20030087484A (ko) * | 2002-05-10 | 2003-11-14 | 현대자동차주식회사 | 페라이트계 cgi조성물 |
KR100836399B1 (ko) * | 2006-11-13 | 2008-06-09 | 현대자동차주식회사 | 회주철계 cgi 주철의 제조 방법 |
KR20090093291A (ko) * | 2008-02-29 | 2009-09-02 | 현대자동차주식회사 | Cgi 주철 |
-
2009
- 2009-12-22 KR KR1020090128817A patent/KR101605905B1/ko active IP Right Grant
-
2010
- 2010-12-08 EP EP10839697.9A patent/EP2518174B1/de active Active
- 2010-12-08 US US13/518,516 patent/US20120301346A1/en not_active Abandoned
- 2010-12-08 CN CN201080058709.7A patent/CN102666896B/zh active Active
- 2010-12-08 WO PCT/KR2010/008730 patent/WO2011078500A2/ko active Application Filing
- 2010-12-08 CN CN201410188450.8A patent/CN103938067B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
WO2011078500A3 (ko) | 2011-11-10 |
EP2518174A2 (de) | 2012-10-31 |
CN103938067A (zh) | 2014-07-23 |
WO2011078500A2 (ko) | 2011-06-30 |
US20120301346A1 (en) | 2012-11-29 |
CN102666896A (zh) | 2012-09-12 |
CN103938067B (zh) | 2017-07-28 |
KR20110072048A (ko) | 2011-06-29 |
CN102666896B (zh) | 2014-10-29 |
KR101605905B1 (ko) | 2016-03-23 |
EP2518174A4 (de) | 2014-05-07 |
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