CN104928601A - High-manganese-steel bush for crusher and manufacturing method thereof - Google Patents
High-manganese-steel bush for crusher and manufacturing method thereof Download PDFInfo
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- CN104928601A CN104928601A CN201510279128.0A CN201510279128A CN104928601A CN 104928601 A CN104928601 A CN 104928601A CN 201510279128 A CN201510279128 A CN 201510279128A CN 104928601 A CN104928601 A CN 104928601A
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Abstract
The invention discloses a high-manganese-steel bush for a crusher. The bush is made of high-manganese steel. The high-manganese steel comprises the chemical element components of, by mass, 1.13%-1.53% of C, 14.5%-18.5% of Mn, 1.5%-2.5% of Cr, 0.4%-1.2% of Si, 0.15%-0.35% of Ti, 0.15%-0.65% of Na, 0.15%-0.65% of K, at most 0.05% of S, at most 0.05% of P and the balance Fe. A manufacturing method mainly comprises the steps of modeling, smelting, deoxygenation, refining, pouring, cleaning, water toughening and the like. According to the high-manganese-steel bush for the crusher and the manufacturing method thereof, the obtained high-manganese-steel bush has the advantages of being good in wear-resisting property, high in anti-fatigue-damaging capacity, long in service life and the like.
Description
Technical field
The present invention relates to crusher technical field, more specifically to a kind of crusher high mangaenese steel lining and preparation method thereof.
Background technology
Wear-resistant metal material is widely used in industrial every field, and along with high speed development that is scientific and technical and modern industry, the financial loss that the energy caused due to galling and metallic substance consumption increase etc. cause is quite surprising.In recent years, to the research of galling and high-abrasive material, the extensive attention of domestic and international people is more and more caused.
Abrasion-proof manganese steel is most widely used high-abrasive material, and wherein high mangaenese steel is that British Hadfield invented in 1882, and its as-cast structure is austenite+martensite+carbide, is single austenite structure after water-tenacity treatment.The principal character of high mangaenese steel is that yield strength is low, and high mangaenese steel workpiece is yielding in using, and impact value reaches 1960 ~ 2940kJ/m
2, demonstrate high toughness, can work hardening be produced under intense impact operating mode, thus there is good wear resistance.
Cone crusher utilizes the spatial variations in crusher chamber to reach the object of breaking ores.Lining bears racking stress under impact load, ore pointed part press-in sleeve surface, and the hardness of ore is higher, is pressed into darker.When mantle rotates, produce again huge shear-stress, cause sleeve surface to occur a large amount of cutter holes, plough wrinkle and groove, this is one of principal mode of lining inefficacy.What is more, and because China's major part mine is in cone crusher use procedure, all keep away unavoidable material with inclusion, such as residual teeth, screw-nut etc., now lining is repeatedly extruded and there will be full of cracks, occurs hole time serious.There is cutter hole in sleeve surface, plough wrinkle, and groove etc. must make lining local produce a large amount of viscous deformation, because racking stress, shear-stress act on sleeve surface repeatedly periodically, the viscous deformation causing its local is also repetitious, therefore must cause the fatigue of material, fragility, and there is crackle, crackle, through constantly expanding, is mutually completed a business transaction, is finally caused bulk to be peeled off, due to lining local repeatedly viscous deformation, the destruction that contact fatigue causes also is the principal mode that lining lost efficacy.
But current crusher high mangaenese steel lining is all not ideal enough in wear resisting property, working strength, work-ing life etc., cannot meet existing demand.
Summary of the invention
In order to overcome the shortcoming of above-mentioned technology, the invention provides a kind of crusher high mangaenese steel lining and preparation method thereof, the high mangaenese steel lining obtained has the advantages such as wear resisting property is good, antifatigue destructiveness strong, long service life.
The technical scheme that technical solution problem of the present invention adopts is: a kind of crusher high mangaenese steel lining, the material of described lining is high mangaenese steel, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.13 ~ 1.53%, Mn:14.5 ~ 18.5%, Cr:1.5 ~ 2.5%, Si:0.4 ~ 1.2%, Ti:0.15 ~ 0.35%, Na:0.15 ~ 0.65%, K:0.15 ~ 0.65%, S :≤0.05%, P :≤0.05%; Surplus is Fe.
Further, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.20 ~ 1.50%, Mn:15.0 ~ 18.0%, Cr:1.5 ~ 2.5%, Si:0.5 ~ 1.0%, Ti:0.20 ~ 0.35%, Na:0.20 ~ 0.50%, K:0.20 ~ 0.50%, S :≤0.05%, P :≤0.05%; Surplus is Fe.
Preferably, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.30%, Mn:15.5%, Cr:1.8%, Si:0.6%, Ti:0.30%, Na:0.30%, K:0.30%, S:0.04%, P:0.04%; Surplus is Fe.
Preferably, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.40%, Mn:17.0%, Cr:2.2%, Si:0.7%, Ti:0.25%, Na:0.35%, K:0.35%, S:0.04%, P:0.04%; Surplus is Fe.
A preparation method for crusher high mangaenese steel lining, described preparation method mainly comprises the following steps:
Step 1: moulding, select high-quality basic material sand as moulding sand, type is coated after making, then carries out igniting baking, then to be poured;
Step 2: melting, is melt into molten steel by ordinary scrap steel, the pig iron by electric furnace, molten steel molten clear after add ferromanganese, ferrochrome, ferrosilicon, melt completely, adjusting component, meets the massfraction requirement of the chemical composition of above-mentioned high mangaenese steel, temperature is risen to 1600 ~ 1650 DEG C to composition;
Step 3: deoxidation treatment: adopt aluminum strip to carry out final deoxygenation process, the weight of aluminum strip is 0.3 ~ 0.35% of molten steel weight;
Step 4: refining: adopt refining agent to carry out refining;
Step 5: cast, liquid steel temperature out controls to pour into a mould at 1550 DEG C ~ 1600 DEG C, and teeming temperature controls at 1500 DEG C ~ 1550 DEG C, and soaking time is 3 hours;
Step 6: sand removal, after casting complete, carries out sand removal process; Then hard edges is cleared up, polishing inspection;
Step 7: water-tenacity treatment, is deposited into the foundry goods cleared up in high temperature heat treatment furnace and puts well, seal fire door, black furnace intensification 40 ~ 100 DEG C/h, is warming up to 650 DEG C of insulation 1.0 ~ 2.0h; Be warming up to 1050 ~ 1100 DEG C again and continue insulation about 1.0h, be greater than 950 DEG C of shrends, the water temperature in pond keeps less than 40 DEG C;
Step 8: after foundry goods air cooling to room temperature, removing is watered, rising head, then carries out an acceptance inspection to product, enters storehouse, stacking, classification warehouse-in.
Further, the concrete operations of described moulding are, first bottom sandbox, spread the thick sand of 150mm, jolt ramming, shakes smooth and strikes off, then hangs in sandbox by the sieve plate evaporative pattern prepared, in putting, in knockout bucket, cloth bag type evenly adds sand, and limit vibrates, while add sand, stop during to molding sand from sandbox 10 ~ 20mm adding sand, end face paving plastic film, good with dry sand gland, place sprue cup, to be poured.
Further, described refining agent is made up of the raw material of following weight part: instrument comminuted steel shot 30 ~ 40 parts, medical stone 1 ~ 2 part, 3 ~ 4 parts, Calcium Fluoride (Fluorspan), 6 ~ 7 parts, magnesium oxide, 1 ~ 2 part, iron(ic) chloride, feldspar in powder 2 ~ 3 parts, 2 ~ 3 parts, magnesium sulfate, nano silicon 2 ~ 3 parts, jade powder 3 ~ 4 parts, montmorillonite 1 ~ 2 part, potassium silicofluoride 4 ~ 5 parts; Each raw material mixes by preparation method, is heated to molten state, then, is poured into Quench in pure water, then is ground into 100 ~ 200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2 ~ 3%, the nano-carbon powder of 1 ~ 2%, after mixing, under 8 ~ 15Mpa, be pressed into base, then, calcine 3 ~ 4 hours at 900 ~ 950 DEG C, after cooling, then be ground into 150 ~ 250 order powder.
Further, in described step of overall modelling, adopt rubber type three-dimensional vibrating-compaction table, the frequency of vibrating motor is 50Hz, and time of vibration is 60 ~ 90s, and amplitude is 0.3 ~ 0.5mm.
Further, described melting step adopts medium-frequency induction furnace, and described induction furnace inner bottom part is equipped with the mixture of one deck lime and fluorite.
Further, the duration of described cast is 5 ~ 8 minutes, during cast, and the temperature of sand mold is 230 ~ 250 DEG C.
The invention has the beneficial effects as follows: compared with prior art, crusher high mangaenese steel lining provided by the invention and preparation method thereof, the high mangaenese steel lining obtained has the advantages such as wear resisting property is good, antifatigue destructiveness strong, long service life.
Embodiment
Below in conjunction with embodiment, illustrate the present invention further, following embodiment should be understood and be only not used in for illustration of the present invention and limit the scope of the invention.
Embodiment 1
A kind of crusher high mangaenese steel lining, the material of described lining is high mangaenese steel, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.15%, Mn:15.0%, Cr:1.5%, Si:0.8%, Ti:0.25%, Na:0.35%, K:0.35%, S:0.04%, P:0.04%; Surplus is Fe.
The preparation method of above-mentioned crusher high mangaenese steel lining mainly comprises the following steps:
Step 1: moulding, first spreads the thick sand of 150mm, jolt ramming bottom sandbox, shake smooth and strike off, then the sieve plate evaporative pattern prepared is hung in sandbox, in putting, in knockout bucket, cloth bag type evenly adds sand, limit vibrates, Bian Jiasha, stops adding sand during to molding sand from sandbox 10 ~ 20mm, end face paving plastic film, good with dry sand gland, place sprue cup, to be poured; In described step of overall modelling, adopt rubber type three-dimensional vibrating-compaction table, the frequency of vibrating motor is 50Hz, and time of vibration is 60 ~ 90s, and amplitude is 0.3 ~ 0.5mm.
Step 2: melting, is melt into molten steel by ordinary scrap steel, the pig iron by electric furnace, molten steel molten clear after add ferromanganese, ferrochrome, ferrosilicon, melt completely, adjusting component, meets the massfraction requirement of the chemical composition of above-mentioned high mangaenese steel, temperature is risen to 1600 ~ 1650 DEG C to composition; Described melting step adopts medium-frequency induction furnace, and described induction furnace inner bottom part is equipped with the mixture of one deck lime and fluorite.
Step 3: deoxidation treatment: adopt aluminum strip to carry out final deoxygenation process, the weight of aluminum strip is 0.3 ~ 0.35% of molten steel weight;
Step 4: refining: adopt refining agent to carry out refining; Described refining agent is made up of the raw material of following weight part: instrument comminuted steel shot 30 ~ 40 parts, medical stone 1 ~ 2 part, 3 ~ 4 parts, Calcium Fluoride (Fluorspan), 6 ~ 7 parts, magnesium oxide, 1 ~ 2 part, iron(ic) chloride, feldspar in powder 2 ~ 3 parts, 2 ~ 3 parts, magnesium sulfate, nano silicon 2 ~ 3 parts, jade powder 3 ~ 4 parts, montmorillonite 1 ~ 2 part, potassium silicofluoride 4 ~ 5 parts; Each raw material mixes by preparation method, is heated to molten state, then, is poured into Quench in pure water, then is ground into 100 ~ 200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2 ~ 3%, the nano-carbon powder of 1 ~ 2%, after mixing, under 8 ~ 15Mpa, be pressed into base, then, calcine 3 ~ 4 hours at 900 ~ 950 DEG C, after cooling, then be ground into 150 ~ 250 order powder.
Step 5: cast, liquid steel temperature out controls to pour into a mould at 1550 DEG C ~ 1600 DEG C, and teeming temperature controls at 1500 DEG C ~ 1550 DEG C, and soaking time is 3 hours; The duration of described cast is 5 ~ 8 minutes, during cast, and the temperature of sand mold is 230 ~ 250 DEG C.
Step 6: sand removal, after casting complete, carries out sand removal process; Then hard edges is cleared up, polishing inspection;
Step 7: water-tenacity treatment, is deposited into the foundry goods cleared up in high temperature heat treatment furnace and puts well, seal fire door, black furnace intensification 40 ~ 100 DEG C/h, is warming up to 650 DEG C of insulation 1.0 ~ 2.0h; Be warming up to 1050 ~ 1100 DEG C again and continue insulation about 1.0h, be greater than 950 DEG C of shrends, the water temperature in pond keeps less than 40 DEG C;
Step 8: after foundry goods air cooling to room temperature, removing is watered, rising head, then carries out an acceptance inspection to product, enters storehouse, stacking, classification warehouse-in.
Embodiment 2
A kind of crusher high mangaenese steel lining, the material of described lining is high mangaenese steel, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.30%, Mn:15.5%, Cr:1.8%, Si:0.6%, Ti:0.30%, Na:0.30%, K:0.30%, S:0.04%, P:0.04%; Surplus is Fe.
The making method of above-mentioned crusher high mangaenese steel lining is with embodiment 1.
Embodiment 3
A kind of crusher high mangaenese steel lining, the material of described lining is high mangaenese steel, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.40%, Mn:17.0%, Cr:2.2%, Si:0.7%, Ti:0.25%, Na:0.35%, K:0.35%, S:0.04%, P:0.04%; Surplus is Fe.
The making method of above-mentioned crusher high mangaenese steel lining is with embodiment 1.
Embodiment 4
A kind of crusher high mangaenese steel lining, the material of described lining is high mangaenese steel, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.50%, Mn:18.5%, Cr:2.5%, Si:1.0%, Ti:0.30%, Na:0.35%, K:0.35%, S:0.04%, P:0.04%; Surplus is Fe.
The making method of above-mentioned crusher high mangaenese steel lining is with embodiment 1.
Above embodiment is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. a crusher high mangaenese steel lining, it is characterized in that: the material of described lining is high mangaenese steel, the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.13 ~ 1.53%, Mn:14.5 ~ 18.5%, Cr:1.5 ~ 2.5%, Si:0.4 ~ 1.2%, Ti:0.15 ~ 0.35%, Na:0.15 ~ 0.65%, K:0.15 ~ 0.65%, S :≤0.05%, P :≤0.05%; Surplus is Fe.
2. a kind of crusher high mangaenese steel lining according to claim 1, is characterized in that: the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.20 ~ 1.50%, Mn:15.0 ~ 18.0%, Cr:1.5 ~ 2.5%, Si:0.5 ~ 1.0%, Ti:0.20 ~ 0.35%, Na:0.20 ~ 0.50%, K:0.20 ~ 0.50%, S :≤0.05%, P :≤0.05%; Surplus is Fe.
3. a kind of crusher high mangaenese steel lining according to claim 1 and 2, is characterized in that: the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.30%, Mn:15.5%, Cr:1.8%, Si:0.6%, Ti:0.30%, Na:0.30%, K:0.30%, S:0.04%, P:0.04%; Surplus is Fe.
4. a kind of crusher high mangaenese steel lining according to claim 1 and 2, is characterized in that: the chemical element composition contained in described high mangaenese steel and mass percent as follows: C:1.40%, Mn:17.0%, Cr:2.2%, Si:0.7%, Ti:0.25%, Na:0.35%, K:0.35%, S:0.04%, P:0.04%; Surplus is Fe.
5. a preparation method for crusher high mangaenese steel lining according to claim 1, is characterized in that: described preparation method mainly comprises the following steps:
Step 1: moulding, select high-quality basic material sand as moulding sand, type is coated after making, then carries out igniting baking, then to be poured;
Step 2: melting, is melt into molten steel by ordinary scrap steel, the pig iron by electric furnace, molten steel molten clear after add ferromanganese, ferrochrome, ferrosilicon, melt completely, adjusting component, meets the massfraction requirement of the chemical composition of above-mentioned high mangaenese steel, temperature is risen to 1600 ~ 1650 DEG C to composition;
Step 3: deoxidation treatment: adopt aluminum strip to carry out final deoxygenation process, the weight of aluminum strip is 0.3 ~ 0.35% of molten steel weight;
Step 4: refining: adopt refining agent to carry out refining;
Step 5: cast, liquid steel temperature out controls to pour into a mould at 1550 DEG C ~ 1600 DEG C, and teeming temperature controls at 1500 DEG C ~ 1550 DEG C, and soaking time is 3 hours;
Step 6: sand removal, after casting complete, carries out sand removal process; Then hard edges is cleared up, polishing inspection;
Step 7: water-tenacity treatment, is deposited into the foundry goods cleared up in high temperature heat treatment furnace and puts well, seal fire door, black furnace intensification 40 ~ 100 DEG C/h, is warming up to 650 DEG C of insulation 1.0 ~ 2.0h; Be warming up to 1050 ~ 1100 DEG C again and continue insulation about 1.0h, be greater than 950 DEG C of shrends, the water temperature in pond keeps less than 40 DEG C;
Step 8: after foundry goods air cooling to room temperature, removing is watered, rising head, then carries out an acceptance inspection to product, enters storehouse, stacking, classification warehouse-in.
6. the preparation method of crusher high mangaenese steel lining according to claim 5, is characterized in that: the concrete operations of described moulding are, first bottom sandbox, spreads the thick sand of 150mm, jolt ramming, shakes smooth and strikes off, then hangs in sandbox by the sieve plate evaporative pattern prepared, in putting, in knockout bucket, cloth bag type evenly adds sand, and limit vibrates, while add sand, stop during to molding sand from sandbox 10 ~ 20mm adding sand, end face paving plastic film, good with dry sand gland, place sprue cup, to be poured.
7. the preparation method of crusher high mangaenese steel lining according to claim 5, is characterized in that: described refining agent is made up of the raw material of following weight part: instrument comminuted steel shot 30 ~ 40 parts, medical stone 1 ~ 2 part, 3 ~ 4 parts, Calcium Fluoride (Fluorspan), 6 ~ 7 parts, magnesium oxide, 1 ~ 2 part, iron(ic) chloride, feldspar in powder 2 ~ 3 parts, 2 ~ 3 parts, magnesium sulfate, nano silicon 2 ~ 3 parts, jade powder 3 ~ 4 parts, montmorillonite 1 ~ 2 part, potassium silicofluoride 4 ~ 5 parts; Each raw material mixes by preparation method, is heated to molten state, then, is poured into Quench in pure water, then is ground into 100 ~ 200 order powder; Gained powder is added and is equivalent to the silane resin acceptor kh-550 of powder weight 2 ~ 3%, the nano-carbon powder of 1 ~ 2%, after mixing, under 8 ~ 15Mpa, be pressed into base, then, calcine 3 ~ 4 hours at 900 ~ 950 DEG C, after cooling, then be ground into 150 ~ 250 order powder.
8. the preparation method of crusher high mangaenese steel lining according to claim 6, is characterized in that: in described step of overall modelling, and adopt rubber type three-dimensional vibrating-compaction table, the frequency of vibrating motor is 50Hz, and time of vibration is 60 ~ 90s, and amplitude is 0.3 ~ 0.5mm.
9. the preparation method of crusher high mangaenese steel lining according to claim 5, is characterized in that: described melting step adopts medium-frequency induction furnace, and described induction furnace inner bottom part is equipped with the mixture of one deck lime and fluorite.
10. the preparation method of crusher high mangaenese steel lining according to claim 5, is characterized in that: the duration of described cast is 5 ~ 8 minutes, during cast, and the temperature of sand mold is 230 ~ 250 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105779889A (en) * | 2016-04-06 | 2016-07-20 | 广东省材料与加工研究所 | Tungsten and titanium containing high manganese steel and preparing method thereof |
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| CN104164624A (en) * | 2014-07-24 | 2014-11-26 | 宁国市开源电力耐磨材料有限公司 | High-manganese steel liner plate for bowl mill |
| CN104353782A (en) * | 2014-10-27 | 2015-02-18 | 无锡乐华自动化科技有限公司 | Lost foam casting process of high-manganese steel sieve plate |
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| JP2003129180A (en) * | 2001-10-19 | 2003-05-08 | Nippon Steel Corp | Pearlitic rail excellent in toughness and ductility and method for producing the same |
| CN102912246A (en) * | 2012-10-25 | 2013-02-06 | 武汉钢铁(集团)公司 | High-manganese-steel composite material applied to bushing block of tapered crushing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105779889A (en) * | 2016-04-06 | 2016-07-20 | 广东省材料与加工研究所 | Tungsten and titanium containing high manganese steel and preparing method thereof |
| CN105779889B (en) * | 2016-04-06 | 2017-12-29 | 广东省材料与加工研究所 | A kind of tungstenic titanium potassium steel and preparation method thereof |
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Application publication date: 20150923 |