CN104651705A - Wear-resisting hypereutectic high-chromium cast iron and preparation method thereof - Google Patents
Wear-resisting hypereutectic high-chromium cast iron and preparation method thereof Download PDFInfo
- Publication number
- CN104651705A CN104651705A CN201510073985.5A CN201510073985A CN104651705A CN 104651705 A CN104651705 A CN 104651705A CN 201510073985 A CN201510073985 A CN 201510073985A CN 104651705 A CN104651705 A CN 104651705A
- Authority
- CN
- China
- Prior art keywords
- iron
- particle
- chromium cast
- cast iron
- hypereutectic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses wear-resisting hypereutectic high-chromium cast iron and a preparation method thereof and belongs to the technical field of wear resisting materials. An electric induction furnace is used for smelting furnace materials such as waste steel, a carburant, ferrochromium, ferroniobium, ferrovanadium, ferrosilicon, ferromanganese, ferroboron and metallic aluminum to obtain hypereutectic high-chromium cast iron liquid; when the iron liquid is discharged from the furnace, ferrovanadium particles, ferrotitanium particles and ferrosilicon particles of which the particle size is 8mm to 15mm are added with iron liquid flow; the added amounts are respectively 1.2% to 1.5%, 0.8% to 1.0% and 0.6% to 0.8% of the mass percentage of the iron liquid which enters a casting ladle; the iron liquid can be tempered in a cast state for use after being cast into a cast piece; the wear-resisting hypereutectic high-chromium cast iron is excellent in wear resistance and simple and convenient in production process.
Description
Technical field
The present invention relates to a kind of antiwear high-chromium cast iron and preparation method thereof, particularly hypereutectic antiwear high-chromium cast iron of one and preparation method thereof, belongs to high-abrasive material technical field.
Background technology
Due to containing a large amount of high rigidity M in rich chromium cast iron
7c
3type carbide and have excellent wear resistance, is applied widely in fields such as metallurgy, mine, building materials, electric power and chemical industry at present.In order to improve wear resistance of high-chromium iron, Chinese invention patent CN 104195420 discloses a kind of rich chromium cast iron high-abrasive material and heat treating method, take iron as main raw material, and be equipped with carbon, silicon, manganese, sulphur, phosphorus, chromium, molybdenum, nickel, copper is auxiliary material, after preparation, melting and casting forms, it is characterized in that, in liquation, each chemical component weight percentage ratio is specially: C2.9-3.1%, Si0.5-0.8%, Mn0.8-1.0%, S0.02-0.05%, P0.02-0.05%, Cr19-21%, Mo1.7-1.9%, Ni0.5-0.7%, Cu0.2-0.5%, surplus is Fe.This invention improves performance and the result of use of rich chromium cast iron, thus increases the field output such as metallurgy, mine, building materials, colliery, and the life cycle of extension device, makes production efficiency be greatly enhanced.Chinese invention patent CN 104164612 also discloses a kind of rich chromium cast iron mould and preparation method thereof, and each composition and mass percent thereof are: C:2.4-2.5%, Cr:13-13.5%, Mn:0.8-0.9%, Si:1.05-1.1%, Cu:0.4-0.5%, Ni:0.5-0.6%, B:0.03-0.04%, Re:0.02-0.03%, S :≤0.04%, P :≤0.04%; Surplus is Fe.The rich chromium cast iron mould of this invention, homogeneous microstructure, by rational formulating of recipe, the complete processings such as rational melting, casting, thermal treatment, avoid the generation of shrinkage porosite, shrinkage cavity, the effective mechanical property improving mould, hardness: 63-65HRC, wear resistance is good, good toughness, impact value>=8J/cm
2, work-ing life improves 1.5-2 times, and cost is low.Chinese invention patent CN 104131219 also discloses a kind of rich chromium cast iron foundry goods, be made up of following composition and mass percent thereof: C:3.05-3.1%, Mn:0.76-0.8%, Si:0.6-0.7%, Cr:10.6-11%, B:1.2-1.4%, Cu:0.08-0.1%, V:1.2-1.4%, Ni:0.06-0.08%, P :≤0.02%, S :≤0.02%, surplus is Fe.This invention is by rationally improving each composition proportion of rich chromium cast iron foundry goods, by complete processings such as rational melting, casting, thermal treatments, improve the intensity of foundry goods, toughness, wear resistance, by the control of pouring time, sand mold temperature, prevent the generation of shrinkage porosite, shrinkage cavity, also improve toughness and the wear resistance of foundry goods, tensile strength is 480-500MPa.Chinese invention patent CN 104131218 also discloses a kind of extra-high chrome cast iron, and each composition and weight percent are: C:2.9-3.0%, Cr:26-27%, Mn:0.8-0.9%, Si:1.05-1.2%, Cu:0.8-0.9%, Ni:0.8-0.9%, B:0.003-0.004%, Ti:0.01-0.02%, Re:0.025-0.035%, S :≤0.045%, P :≤0.055%; Surplus is Fe.This invention rich chromium cast iron is by complete processings such as rational formula design, melting, rotten, cast, deoxidations, rich chromium cast iron is allowed to have good wear resistance, hardness, intensity, erosion resistance, toughness, by the control of the duration of pouring, sand mold temperature, effectively prevent the generation of shrinkage porosite, shrinkage cavity, also improve toughness and the wear resistance of rich chromium cast iron, surface hardness 60-63HRC, impact value>=7J/cm
2.Chinese invention patent CN 103993218 also discloses large-sized grinder rich chromium cast iron trench liner and preparation method thereof, comprises the chemical composition of following weight percent: carbon 2.2-2.8%, silicon 0.3-0.8%, manganese 0.6-1.2%, chromium 15-20%, magnesium 2.0-3.0%, molybdenum 0.3-1.0%, nickel 0.1-0.2%, copper 0.3-0.8%, vanadium 0.08-0.25%, sulphur 0.005-0.025%, phosphorus 0.005-0.025%, yttrium 0.005-0.03%, surplus is iron.This invention is very long for work-ing life, and while raising wear resistance, impact toughness also improves greatly, meets the shock resistance of large-sized grinder liner plate.Chinese invention patent CN 103409681 also discloses the preparation method of a kind of rich chromium cast iron, the thin-wall pipe be made up of it and this thin-wall pipe.Wherein, the feed composition weight percentage proportioning of rich chromium cast iron is as follows: C:2.7% ~ 3.4%, Cr:23% ~ 32%, Mo:0.2% ~ 0.4%, Ni:0.1% ~ 0.3%, V:0.6% ~ 1.1%, Mn:0.3% ~ 0.5%, Si:0.8% ~ 1.1%, P :≤0.05%, S :≤0.05%, and the Fe of surplus; Wherein, Cr and C content meet formula: 4.2%≤[C] wt.%+0.0474 × [Cr] wt.%≤4.5%.Rich chromium cast iron prepared by the feed composition proportioning utilizing this invention to provide obtains rich chromium cast iron thin-wall pipe, and yield rate is high, and wear resisting property is good, and the wear resisting property of rich chromium cast iron is played one's part to the full in slim pipe fitting.Chinese invention patent CN 103266261 also discloses a kind of rich chromium cast iron grinding element and preparation method thereof, described grinding element chemical composition is by weight percentage: C:2.5 ~ 2.8%, Si≤0.5%, Mn:0.15 ~ 0.25%, Mo:0 ~ 2.5%, Cr:15 ~ 20%, Al:0.01 ~ 0.8%, Ni:0.05 ~ 0.10%, Re:0.1 ~ 0.2%, P≤0.05%, S≤0.05%, surplus is Fe, the principal feature of this invention is nano-milled material hardness HRC >=65 adopting effective combination of cast grinding ball material formula and thermal treatment process science to obtain, percentage of damage≤0.3%, cast gate center and centre of sphere HRC poor≤1.5, solve the cast grinding ball hardness existed in the research and development of high-abrasive material cast grinding ball industry low, poor toughness, erosion resistance is weak, density is low waits technical barrier.
But, in above-mentioned high-chromium abrasion-proof cast iron, the M of high rigidity
7c
3type carbide comparatively small amt, for the preparation of the flow passage part (as impeller, sheath and backplate etc.) of various conveying containing solid particulate fluid pump, wear resistance still is apparent not enough.In order to improve wear resistance of high-chromium iron further, hypereutectic high chromium cast iron causes attention, Chinese invention patent CN 102925783 discloses a kind of preparation method of hypereutectic high-chromium white cast iron, comprise the following steps: adopt steel scrap, the pig iron, high carbon ferro-chrome, ferromanganese and ferrosilicon as melting starting material, chemical constitution by following weight percent: 3.0-4.5%C, 15-35%Cr, 0.5-1.5%Mn, 0.5-1.5%Si, < 0.06%P, < 0.06%S, all the other are prepared burden for Fe; Deoxidation after raw material melts in electric furnace, then comes out of the stove casting liquid rapidly and pours casting ladle into; When temperature is down to 1300 DEG C-1350 DEG C, pour casting liquid into sand mold castable; Foundry goods is put into electric furnace and be heated to 700 DEG C ~ 1000 DEG C insulations, then come out of the stove rapidly to put on forging machine and carry out forging deformation process; Finally temper is carried out to forging, finally obtain hypereutectic high chromium cast iron.Chinese invention patent CN102851570 also discloses the high carbon and chromium abrasive disc foundry goods of defibrator, for hypereutectic high chromium cast iron, while containing Gao Ge and containing high-carbon, main chemical compositions is iron, by percent mass, carbon content 3.6-3.8%, chromium content 28.0-30.0%, phosphorus, the sulphur of nickel content≤0.8%, molybdenum content≤0.5%, Fe content≤0.8%, copper content≤0.2% and a certain amount of silicon and low levels, this beneficial effect of the invention is: the nascent Hard Inclusion Cr of product
7c
3type carbide increases, and makes abrasive disc wear resistance improve more than 30%; The noble metal content such as nickel, molybdenum, manganese, copper decline, and production cost is declined; Phosphorus, sulphur content decline, and toughness is increased; Comprehensive mechanical performance is improved, its hardness reaches HRC62-65, can be widely used in and defibrination processing is carried out to fiberboard raw materials such as timber, bagasse, cotton stalks, abrasive disc can bear the multiple wearing and tearing such as low-stress wearing and tearing, fatigue wear, corrosive wear, high temperature wear, and the destruction of external force can also be resisted, work-ing life improves more than 30%.Chinese invention patent CN101497966 also discloses the hypereutectic high chromium, manganese, molybdenum and tungsten alloy wear resistant steel iron material of a kind of high rigidity, chemical composition containing following masses per-cent: carbon 3.05 ~ 5.5%, silicon 0.3 ~ 2.0%, chromium 35.5 ~ 40%, manganese 0.3 ~ 3.5%, molybdenum 0.1 ~ 3.5%, tungsten 0.1 ~ 3.5%, phosphorus≤0.1%, sulphur≤0.1%, surplus is iron.Chinese invention patent CN 1769508 also discloses a kind of hypereutectic high chromium cast iron and manufacture method thereof, the main component of hypereutectic high chromium cast iron is: C:3.5 ~ 4.5%, Mn:1.0 ~ 3.0%, Cr:17 ~ 30%, Si:0.5 ~ 1.5%, Cu:1.0 ~ 2.0%, P :≤0.06%, S :≤0.06%, Ni :≤1%, surplus is iron.With the Wet Parts of slurry pump that hypereutectic high chromium cast iron manufactures, production technique is easy, cost is low, and castibility is good, has excellent wear resistance and high work-ing life.Chinese invention patent CN 101892417 also discloses the hypereutectic high chromium cast iron that a kind of as cast condition uses, the chemical composition of the hypereutectic high chromium cast iron that this as cast condition uses is by weight percentage: C:3.5 ~ 4.5%, Mn:1.0 ~ 3.0%, Cr:16.0 ~ 28.0%, Si:0.5 ~ 1.5%, Ti:2.1 ~ 3.0%, P :≤0.06%, S :≤0.06%, surplus is iron.The hypereutectic high chromium cast iron tapping temperature 1500 ~ 1650 DEG C that this as cast condition uses, teeming temperature 1350 ~ 1400 DEG C, good casting property, also has higher hardness and excellent wear resistance.Patent WO4047760-A1 and EP147422-A1 also discloses a kind of wear-resisting hypereutectic high chromium cast iron, and its main component for (wt.%) is: C>4.0, Mn:0 ~ 15%, Cr:25.0 ~ 45.0%, Mo:0 ~ 10%, Ni:0 ~ 10%, B:0 ~ 0.2%, Ti, V, W, Ta and Nb at least add one, and the add-on of often kind of element is less than 5.0% and Ti, the total amount of V, W, Ta and Nb is less than 15.0% :≤0.06%, S :≤0.06%, surplus is iron.Chinese invention patent CN 103789600 also discloses a kind of hypereutectic high chromium cast iron preparation method, the chemical constitution of hypereutectic high chromium cast iron molten iron and massfraction thereof are 4.0 ~ 4.3%C, 25.0 ~ 28.0%Cr, 0.3 ~ 0.8%Si, 1.2 ~ 1.5%Mn, 0.08 ~ 0.15%N, 0.05 ~ 0.10%Al, S≤0.04%, P≤0.05%, surplus Fe.When the temperature of above-mentioned molten iron reaches 1520 ~ 1550 DEG C, molten iron is come out of the stove into casting ladle.Then to be sent into by the alloy wire of diameter with wire feeder in the molten iron in casting ladle, alloy wire add-on accounts for 4.0 ~ 5.5% of molten steel quality mark in casting ladle, and molten iron is poured into casting mold obtains foundry goods, and foundry goods, after Quench and temper, has good wear resistance.But, above-mentioned hypereutectic high chromium cast iron or there is complicated process of preparation, or there is the thick deficiency causing material fragility large of carbide.
Summary of the invention
The object of the invention be to provide a kind of containing volume fraction exceed 50% hypereutectic antiwear high-chromium cast iron, the present invention, on increase carbide volume fraction basis, adds multiple alloying element, makes carbide size tiny, be evenly distributed, guarantee the safe handling of hypereutectic high chromium cast iron.
The object of the invention can be realized by following technological measure:
1. elder generation's Scrap Smelting in induction furnace, carburelant, ferrochrome, ferro-niobium, vanadium iron, ferrosilicon, ferromanganese, ferro-boron, the furnace charges such as metallic aluminium, obtain hypereutectic high chromium cast iron molten iron, the chemical constitution of hypereutectic high chromium cast iron molten iron and massfraction thereof are controlled at 4.8 ~ 5.0%C, 28 ~ 30%Cr, 2.0 ~ 2.5%Nb, 3.5 ~ 4.0%V, 0.3 ~ 1.0%Si, 0.5 ~ 0.8%Mn, 0.65 ~ 0.80%B, 0.6 ~ 0.8%Al, S<0.04%, P<0.05%, surplus Fe, when molten iron temperature reaches 1565 ~ 1590 DEG C of casting ladles of coming out of the stove, molten iron is come out of the stove in process, the vanadium iron particle that particle size is 8 ~ 15mm is added with molten iron stream, Ferrotitanium particle and ferrosilicon particle, vanadium iron particle, the add-on of Ferrotitanium particle and ferrosilicon particle is respectively and enters 1.2 ~ 1.5% of molten steel quality mark in casting ladle, 0.8 ~ 1.0% and 0.6 ~ 0.8%,
2. when molten iron temperature in casting ladle is down to 1480 ~ 1500 DEG C, molten iron is poured into casting mold, and in molten steel pouring course, aluminium bag WC powder is added with molten iron stream, the particle size of aluminium bag WC powder is 30 ~ 45 μm, aluminium coating thickness is 7 ~ 10 μm, aluminium bag WC powder add-on accounts for and enters 5.5 ~ 6.0% of molten steel quality mark in casting mold, molten iron cast is after 4 ~ 8 hours, unpack and take out foundry goods, after polishing cleaning, continue to be heated to 360 ~ 400 DEG C into stove, be incubated stove after 10 ~ 15 hours and be chilled to temperature lower than after 120 DEG C, come out of the stove air cooling to room temperature, hypereutectic antiwear high-chromium cast iron can be obtained.
Chemical constitution and the massfraction of vanadium iron particle described above are: 48 ~ 55%V ,≤0.40%C ,≤0.06%P ,≤0.04%S ,≤2.0%Si ,≤1.5%Al, surplus Fe.
The chemical constitution of Ferrotitanium particle described above and massfraction are: 30 ~ 35%Ti ,≤4.0%Al ,≤2.0%Si ,≤0.03%S ,≤0.03%P ,≤0.10%C ,≤0.40%Cu ,≤2.5%Mn, surplus Fe.
Chemical constitution and the massfraction thereof of ferrosilicon particle described above are: 73.0 ~ 78.0%Si ,≤0.5%Al ,≤1.0%Ca ,≤0.4%Mn ,≤0.3%Cr ,≤0.035%P ,≤0.02%S ,≤0.10%C, surplus Fe.
The hypereutectic antiwear high-chromium cast iron of the present invention, employing castmethod is produced, simple process, adopt ordinary scrap steel, carburelant, ferrochrome, ferro-niobium, vanadium iron, ferrosilicon, ferromanganese, ferro-boron, the melting in induction furnace of the furnace charges such as metallic aluminium, obtain hypereutectic high chromium cast iron molten iron, the chemical constitution of hypereutectic high chromium cast iron molten iron and massfraction thereof are controlled at 4.8 ~ 5.0%C, 28 ~ 30%Cr, 2.0 ~ 2.5%Nb, 3.5 ~ 4.0%V, 0.3 ~ 1.0%Si, 0.5 ~ 0.8%Mn, 0.65 ~ 0.80%B, 0.6 ~ 0.8%Al, S<0.04%, P<0.05%, surplus Fe.Wherein adding 28 ~ 30%Cr is M in order to obtain more high rigidity
7c
3type carbide, is conducive to improving cast iron wear resistance, in addition, adds 28 ~ 30%Cr and is greater than 5 in order to ensure the Cr/C ratio of cast iron, guarantee that carbide is M
7c
3.On this basis, adding 2.0 ~ 2.5%Nb and 3.5 ~ 4.0%V, in order to obtain high rigidity (V, Nb) C double carbide, being conducive to improving cast iron wear resistance further.Add 0.65 ~ 0.80%B, except boron enters carbide, thus raising carbide hard is outside one's consideration, and part of boron enters matrix, can increase substantially matrix hardening capacity, guarantees cast iron as cast condition high rigidity, is conducive to saving the high high-temperature heat treatment process of energy consumption.Add 0.6 ~ 0.8%Al, be conducive to improving carbide morphology.The present invention works as molten iron temperature and reaches 1565 ~ 1590 DEG C of casting ladles of coming out of the stove, molten iron is come out of the stove in process, add with molten iron stream vanadium iron particle, Ferrotitanium particle and the ferrosilicon particle that particle size is 8 ~ 15mm, the add-on of vanadium iron particle, Ferrotitanium particle and ferrosilicon particle is respectively and enters 1.2 ~ 1.5%, 0.8 ~ 1.0% and 0.6 ~ 0.8% of molten steel quality mark in casting ladle.Add vanadium iron particle, Ferrotitanium particle and ferrosilicon particle, except alloying action, improve cast iron wear resistance, also to the tiny of the improvement of structure of cast iron, particularly solidified structure and the obvious benefit that has been evenly distributed.On this basis, when molten iron temperature in casting ladle is down to 1480 ~ 1500 DEG C, molten iron is poured into casting mold, and in molten steel pouring course, aluminium bag WC powder is added with molten iron stream, the particle size of aluminium bag WC powder is 30 ~ 45 μm, and aluminium coating thickness is 7 ~ 10 μm, and aluminium bag WC powder add-on accounts for and enters 5.5 ~ 6.0% of molten steel quality mark in casting mold.Add aluminium bag WC powder, can significantly improve cast iron wear resistance, all right thinning solidification structure, improves cast iron obdurability.Molten iron cast is after 4 ~ 8 hours, unpack and take out foundry goods, after polishing cleaning, continue to be heated to 360 ~ 400 DEG C into stove, be incubated stove after 10 ~ 15 hours and be chilled to temperature lower than after 120 DEG C, come out of the stove air cooling to room temperature, foundry goods internal stress can be eliminated, thus the hypereutectic high chromium cast iron of wear resisting property excellence can be obtained.
The present invention compared with prior art, has following characteristics:
1) in the hypereutectic antiwear high-chromium cast iron of the present invention, the volume fraction of anti-abrasive hard tissue carbide reaches 55 ~ 62%, causes material to have excellent wear resistance;
2) the present invention's hypereutectic antiwear high-chromium cast iron production technique is easy, and under as cast condition, tempering can use, and has production efficiency high, the advantages such as energy consumption is low.
Embodiment
Below in conjunction with embodiment, the present invention is further described, but the present invention is not limited to following examples.
Embodiment 1:
A kind of hypereutectic antiwear high-chromium cast iron and preparation method thereof, adopt 500 kilograms of medium-frequency induction furnace meltings, concrete step of preparation process is:
1. elder generation's Scrap Smelting in 500 kilograms of medium-frequency induction furnaces, carburelant, ferrochrome, ferro-niobium, vanadium iron, ferrosilicon, ferromanganese, ferro-boron, the furnace charges such as metallic aluminium, obtain hypereutectic high chromium cast iron molten iron, the chemical constitution of hypereutectic high chromium cast iron molten iron and massfraction thereof are controlled at 4.82%C, 28.17%Cr, 2.06%Nb, 3.99%V, 0.56%Si, 0.79%Mn, 0.80%B, 0.63%Al, 0.033%S, 0.045%P, surplus Fe, when molten iron temperature reaches 1589 DEG C of casting ladles of coming out of the stove, molten iron is come out of the stove in process, (chemical constitution of vanadium iron particle and massfraction are: 48.94%V to add with molten iron stream the vanadium iron particle that particle size is 8 ~ 15mm, 0.27%C, 0.038%P, 0.025%S, 1.29%Si, 1.04%Al, surplus Fe), (chemical constitution of Ferrotitanium particle and massfraction are Ferrotitanium particle: 34.62%Ti, 2.58%Al, 1.36%Si, 0.020%S, 0.027%P, 0.054%C, 0.15%Cu, 2.17%Mn, surplus Fe) and ferrosilicon particle (chemical constitution of ferrosilicon particle and massfraction thereof are: 75.84%Si, 0.31%Al, 0.59%Ca, 0.24%Mn, 0.16%Cr, 0.033%P, 0.012%S, 0.074%C, surplus Fe), vanadium iron particle, the add-on of Ferrotitanium particle and ferrosilicon particle is respectively and enters 1.2% of molten steel quality mark in casting ladle, 1.0% and 0.6%,
2. when molten iron temperature in casting ladle is down to 1488 DEG C, molten iron is poured into casting mold, and in molten steel pouring course, aluminium bag WC powder is added with molten iron stream, the particle size of aluminium bag WC powder is 30 ~ 45 μm, aluminium coating thickness is 7 ~ 10 μm, aluminium bag WC powder add-on accounts for and enters 5.5% of molten steel quality mark in casting mold, after molten iron pours into a mould 6 hours, unpack and take out foundry goods, after polishing cleaning, continue to be heated to 360 DEG C into stove, be incubated stove after 15 hours and be chilled to temperature lower than after 120 DEG C, come out of the stove air cooling to room temperature, hypereutectic antiwear high-chromium cast iron can be obtained, its mechanical property is in table 1.
Embodiment 2:
A kind of hypereutectic antiwear high-chromium cast iron and preparation method thereof, adopt 1000 kilograms of medium-frequency induction furnace meltings, concrete step of preparation process is:
1. elder generation's Scrap Smelting in 1000 kilograms of medium-frequency induction furnaces, carburelant, ferrochrome, ferro-niobium, vanadium iron, ferrosilicon, ferromanganese, ferro-boron, the furnace charges such as metallic aluminium, obtain hypereutectic high chromium cast iron molten iron, the chemical constitution of hypereutectic high chromium cast iron molten iron and massfraction thereof are controlled at 4.97%C, 29.91%Cr, 2.47%Nb, 3.50%V, 0.89%Si, 0.54%Mn, 0.66%B, 0.75%Al, 0.036%S, 0.040%P, surplus Fe, when molten iron temperature reaches 1567 DEG C of casting ladles of coming out of the stove, molten iron is come out of the stove in process, (chemical constitution of vanadium iron particle and massfraction are: 54.27%V to add with molten iron stream the vanadium iron particle that particle size is 8 ~ 15mm, 0.28%C, 0.047%P, 0.029%S, 1.04%Si, 0.97%Al, surplus Fe), (chemical constitution of Ferrotitanium particle and massfraction are Ferrotitanium particle: 30.80%Ti, 2.55%Al, 1.37%Si, 0.023%S, 0.026%P, 0.094%C, 0.21%Cu, 2.14%Mn, surplus Fe) and ferrosilicon particle (chemical constitution of ferrosilicon particle and massfraction thereof are: 74.14%Si, 0.28%Al, 0.65%Ca, 0.19%Mn, 0.11%Cr, 0.030%P, 0.015%S, 0.082%C, surplus Fe), vanadium iron particle, the add-on of Ferrotitanium particle and ferrosilicon particle is respectively and enters 1.5% of molten steel quality mark in casting ladle, 0.8% and 0.8%,
2. when molten iron temperature in casting ladle is down to 1497 DEG C, molten iron is poured into casting mold, and in molten steel pouring course, aluminium bag WC powder is added with molten iron stream, the particle size of aluminium bag WC powder is 30 ~ 45 μm, aluminium coating thickness is 7 ~ 10 μm, aluminium bag WC powder add-on accounts for and enters 6.0% of molten steel quality mark in casting mold, after molten iron pours into a mould 4 hours, unpack and take out foundry goods, after polishing cleaning, continue to be heated to 400 DEG C into stove, be incubated stove after 10 hours and be chilled to temperature lower than after 120 DEG C, come out of the stove air cooling to room temperature, hypereutectic antiwear high-chromium cast iron can be obtained, its mechanical property is in table 1.
Embodiment 3:
A kind of hypereutectic antiwear high-chromium cast iron and preparation method thereof, adopt 1000 kilograms of medium-frequency induction furnace meltings, concrete step of preparation process is:
1. elder generation's Scrap Smelting in 1000 kilograms of medium-frequency induction furnaces, carburelant, ferrochrome, ferro-niobium, vanadium iron, ferrosilicon, ferromanganese, ferro-boron, the furnace charges such as metallic aluminium, obtain hypereutectic high chromium cast iron molten iron, the chemical constitution of hypereutectic high chromium cast iron molten iron and massfraction thereof are controlled at 4.93%C, 28.84%Cr, 2.33%Nb, 3.76%V, 0.45%Si, 0.62%Mn, 0.69%B, 0.72%Al, 0.028%S, 0.037%P, surplus Fe, when molten iron temperature reaches 1583 DEG C of casting ladles of coming out of the stove, molten iron is come out of the stove in process, (chemical constitution of vanadium iron particle and massfraction are: 52.41%V to add with molten iron stream the vanadium iron particle that particle size is 8 ~ 15mm, 0.31%C, 0.053%P, 0.035%S, 1.78%Si, 1.16%Al, surplus Fe), (chemical constitution of Ferrotitanium particle and massfraction are Ferrotitanium particle: 32.06%Ti, 3.16%Al, 1.05%Si, 0.026%S, 0.025%P, 0.084%C, 0.19%Cu, 1.77%Mn, surplus Fe) and ferrosilicon particle (chemical constitution of ferrosilicon particle and massfraction thereof are: 76.04%Si, 0.30%Al, 0.70%Ca, 0.21%Mn, 0.15%Cr, 0.032%P, 0.019%S, 0.057%C, surplus Fe), vanadium iron particle, the add-on of Ferrotitanium particle and ferrosilicon particle is respectively and enters 1.4% of molten steel quality mark in casting ladle, 0.9% and 0.7%,
2. when molten iron temperature in casting ladle is down to 1481 DEG C, molten iron is poured into casting mold, and in molten steel pouring course, aluminium bag WC powder is added with molten iron stream, the particle size of aluminium bag WC powder is 30 ~ 45 μm, aluminium coating thickness is 7 ~ 10 μm, aluminium bag WC powder add-on accounts for and enters 5.8% of molten steel quality mark in casting mold, after molten iron pours into a mould 8 hours, unpack and take out foundry goods, after polishing cleaning, continue to be heated to 380 DEG C into stove, be incubated stove after 12 hours and be chilled to temperature lower than after 120 DEG C, come out of the stove air cooling to room temperature, hypereutectic antiwear high-chromium cast iron can be obtained, its mechanical property is in table 1.
The hypereutectic antiwear high-chromium cast iron mechanical property of table 1
| Mechanical property | Hardness/HRC | Impelling strength (J/cm 2) | Carbide volume fraction/% |
| Embodiment 1 | 65.7 | 5.7 | 55.9 |
| Embodiment 2 | 65.8 | 5.8 | 58.2 |
| Embodiment 3 | 66.3 | 5.2 | 61.4 |
Hypereutectic high chromium cast iron hardness of the present invention is high, good toughness, particularly the volume fraction of anti-abrasive hard tissue carbide reaches 55 ~ 62%, there is excellent wear resistance, wearing test result display on the wheeled wear testing machine of MLS-225 type damp sand rubber, the wear resistance of material of the present invention improves 3 ~ 4 times than common Hypoeutectic High Cr Cast Iron, can be used for manufacturing all kinds of worn partss that conveying has strong wear slurry Wet Parts of slurry pump and other wear working condition.
Claims (5)
1. a preparation method for hypereutectic antiwear high-chromium cast iron, is characterized in that, comprises the following steps:
1. elder generation's Scrap Smelting in induction furnace, carburelant, ferrochrome, ferro-niobium, vanadium iron, ferrosilicon, ferromanganese, ferro-boron, the furnace charges such as metallic aluminium, obtain hypereutectic high chromium cast iron molten iron, the chemical constitution of hypereutectic high chromium cast iron molten iron and massfraction thereof are controlled at 4.8 ~ 5.0%C, 28 ~ 30%Cr, 2.0 ~ 2.5%Nb, 3.5 ~ 4.0%V, 0.3 ~ 1.0%Si, 0.5 ~ 0.8%Mn, 0.65 ~ 0.80%B, 0.6 ~ 0.8%Al, S<0.04%, P<0.05%, surplus Fe, when molten iron temperature reaches 1565 ~ 1590 DEG C of casting ladles of coming out of the stove, molten iron is come out of the stove in process, the vanadium iron particle that particle size is 8 ~ 15mm is added with molten iron stream, Ferrotitanium particle and ferrosilicon particle, vanadium iron particle, the add-on of Ferrotitanium particle and ferrosilicon particle is respectively and enters 1.2 ~ 1.5% of molten steel quality mark in casting ladle, 0.8 ~ 1.0% and 0.6 ~ 0.8%,
2. when molten iron temperature in casting ladle is down to 1480 ~ 1500 DEG C, molten iron is poured into casting mold, and in molten steel pouring course, aluminium bag WC powder is added with molten iron stream, the particle size of aluminium bag WC powder is 30 ~ 45 μm, aluminium coating thickness is 7 ~ 10 μm, aluminium bag WC powder add-on accounts for and enters 5.5 ~ 6.0% of molten steel quality mark in casting mold, molten iron cast is after 4 ~ 8 hours, unpack and take out foundry goods, after polishing cleaning, continue to be heated to 360 ~ 400 DEG C into stove, be incubated stove after 10 ~ 15 hours and be chilled to temperature lower than after 120 DEG C, come out of the stove air cooling to room temperature, hypereutectic antiwear high-chromium cast iron can be obtained.
2. according to the method for claim 1, it is characterized in that, chemical constitution and the massfraction of described vanadium iron particle are: 48 ~ 55%V ,≤0.40%C ,≤0.06%P ,≤0.04%S ,≤2.0%Si ,≤1.5%Al, surplus Fe.
3. according to the method for claim 1, it is characterized in that, the chemical constitution of described Ferrotitanium particle and massfraction are: 30 ~ 35%Ti ,≤4.0%Al ,≤2.0%Si ,≤0.03%S ,≤0.03%P ,≤0.10%C ,≤0.40%Cu ,≤2.5%Mn, surplus Fe.
4. according to the method for claim 1, it is characterized in that, chemical constitution and the massfraction thereof of described ferrosilicon particle are: 73.0 ~ 78.0%Si ,≤0.5%Al, ≤ 1.0%Ca ,≤0.4%Mn ,≤0.3%Cr ,≤0.035%P, ≤ 0.02%S ,≤0.10%C, surplus Fe.
5. according to the hypereutectic antiwear high-chromium cast iron that the either method of claim 1-4 prepares.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073985.5A CN104651705B (en) | 2015-02-12 | 2015-02-12 | A kind of hypereutectic antiwear high-chromium cast iron and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073985.5A CN104651705B (en) | 2015-02-12 | 2015-02-12 | A kind of hypereutectic antiwear high-chromium cast iron and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104651705A true CN104651705A (en) | 2015-05-27 |
| CN104651705B CN104651705B (en) | 2016-08-24 |
Family
ID=53243341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510073985.5A Expired - Fee Related CN104651705B (en) | 2015-02-12 | 2015-02-12 | A kind of hypereutectic antiwear high-chromium cast iron and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104651705B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299518A (en) * | 2020-03-17 | 2020-06-19 | 中信重工机械股份有限公司 | Casting method of high-chromium cast iron spiral lining plate |
| CN114657450A (en) * | 2022-03-19 | 2022-06-24 | 江西耐普矿机铸造有限公司 | Hypereutectic ultrahigh-chromium cast iron material suitable for fine-particle industrial mines, preparation method and application thereof, and slurry pump overflowing piece |
| CN115537642A (en) * | 2022-10-30 | 2022-12-30 | 北京工业大学 | Method for refining hypereutectic high-chromium cast iron primary carbide |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59104458A (en) * | 1983-11-22 | 1984-06-16 | Shirikoroi Kenkyusho:Kk | Improvement of high silicon heat resistant cast steel |
| EP0118307A2 (en) * | 1983-03-04 | 1984-09-12 | Telatek Oy | Filler wire for use in arc-spraying |
| CN101173340A (en) * | 2007-12-04 | 2008-05-07 | 北京工业大学 | As-cast state high-carbon high-chromium cast iron and method for producing the same |
| CN101892417A (en) * | 2010-06-30 | 2010-11-24 | 石家庄铁道大学 | As-cast hypereutectic high chromium cast iron and preparation method thereof |
| CN102851570A (en) * | 2012-03-14 | 2013-01-02 | 宁波市圣盾机械制造有限公司 | High-carbon high-chromium refining plate casting of defibrator |
| CN103436773A (en) * | 2013-08-21 | 2013-12-11 | 北京工业大学 | Preparation method of wear-resistant high-chromium cast iron |
| CN103789600A (en) * | 2014-01-24 | 2014-05-14 | 北京工业大学 | Hypereutectic high-chromium iron preparation method |
| CN104060157A (en) * | 2014-06-24 | 2014-09-24 | 广东省工业技术研究院(广州有色金属研究院) | Hypereutectic high-chromium white cast iron and preparation method thereof |
-
2015
- 2015-02-12 CN CN201510073985.5A patent/CN104651705B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0118307A2 (en) * | 1983-03-04 | 1984-09-12 | Telatek Oy | Filler wire for use in arc-spraying |
| JPS59104458A (en) * | 1983-11-22 | 1984-06-16 | Shirikoroi Kenkyusho:Kk | Improvement of high silicon heat resistant cast steel |
| CN101173340A (en) * | 2007-12-04 | 2008-05-07 | 北京工业大学 | As-cast state high-carbon high-chromium cast iron and method for producing the same |
| CN101892417A (en) * | 2010-06-30 | 2010-11-24 | 石家庄铁道大学 | As-cast hypereutectic high chromium cast iron and preparation method thereof |
| CN102851570A (en) * | 2012-03-14 | 2013-01-02 | 宁波市圣盾机械制造有限公司 | High-carbon high-chromium refining plate casting of defibrator |
| CN103436773A (en) * | 2013-08-21 | 2013-12-11 | 北京工业大学 | Preparation method of wear-resistant high-chromium cast iron |
| CN103789600A (en) * | 2014-01-24 | 2014-05-14 | 北京工业大学 | Hypereutectic high-chromium iron preparation method |
| CN104060157A (en) * | 2014-06-24 | 2014-09-24 | 广东省工业技术研究院(广州有色金属研究院) | Hypereutectic high-chromium white cast iron and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299518A (en) * | 2020-03-17 | 2020-06-19 | 中信重工机械股份有限公司 | Casting method of high-chromium cast iron spiral lining plate |
| CN114657450A (en) * | 2022-03-19 | 2022-06-24 | 江西耐普矿机铸造有限公司 | Hypereutectic ultrahigh-chromium cast iron material suitable for fine-particle industrial mines, preparation method and application thereof, and slurry pump overflowing piece |
| CN115537642A (en) * | 2022-10-30 | 2022-12-30 | 北京工业大学 | Method for refining hypereutectic high-chromium cast iron primary carbide |
| CN115537642B (en) * | 2022-10-30 | 2023-05-02 | 北京工业大学 | Refining method of hypereutectic high-chromium cast iron primary carbide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104651705B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103757516B (en) | wear-resistant white cast iron and preparation method thereof | |
| CN103014550B (en) | High chromium multielement alloy wear resisting ball and manufacturing method thereof | |
| CN103436773B (en) | Preparation method of wear-resistant high-chromium cast iron | |
| CN103088249B (en) | Abrasion-resistant alloy cast iron material with high hardness for chute lining plate, and preparation method thereof | |
| CN100519804C (en) | High chromium abrasion-proof cast iron abrasive disc and manufacturing method thereof | |
| CN100574910C (en) | Centrifugal casting half steel/steel/graphite steel composite roll collar and preparation method thereof | |
| CN103060668B (en) | Carbide-containing ductile iron and its making method | |
| CN103498107A (en) | High-boron high-chromium low-carbon high-temperature-resistant wear-resisting alloy steel and manufacturing method thereof | |
| CN106884126B (en) | A kind of high chromium steel roller and its manufacturing method | |
| CN105506442B (en) | A kind of Si Mn alloyings wear-resisting ductile iron abrading-ball and preparation method thereof | |
| CN103789600B (en) | Hypereutectic high chromium cast iron preparation method | |
| CN101956140B (en) | Lining plate for large ball mill and casting method thereof | |
| CN102925783A (en) | Method for preparing hypereutectic high chromium white cast iron | |
| CN103498108A (en) | High-boron high-chromium low-carbon wear-resisting alloy steel with good red hardness and manufacturing method thereof | |
| CN103014480B (en) | Multielement microalloy low chromium white iron grinding ball and manufacturing method thereof | |
| CN105112790A (en) | High-strength wear-resistant spheroidal-graphit cast steel and preparation method thereof | |
| CN103060662A (en) | Preparation process of alloy cast iron grinding ball | |
| CN113897541B (en) | High-chromium wear-resistant steel ball and casting process thereof | |
| CN104651705B (en) | A kind of hypereutectic antiwear high-chromium cast iron and preparation method thereof | |
| CN105177436B (en) | A kind of high intensity, high tenacity, high-wear-resistant alloy liner plate | |
| CN104593663B (en) | A kind of wear-resistant white cast iron and preparation method thereof | |
| CN113462989A (en) | Niobium microalloyed high manganese steel lining plate for mine lattice type ball mill and preparation method thereof | |
| CN106609334B (en) | A kind of superelevation chrome cast iron and preparation method thereof | |
| CN104651731B (en) | A kind of large-size ball mill liner plate and preparation method thereof | |
| CN106521294B (en) | A kind of preparation method of Si-Mn alloyings abrasion resistant cast steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20220212 |