CN107675073A - A kind of novel light potassium steel high-abrasive material - Google Patents
A kind of novel light potassium steel high-abrasive material Download PDFInfo
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- CN107675073A CN107675073A CN201611101459.6A CN201611101459A CN107675073A CN 107675073 A CN107675073 A CN 107675073A CN 201611101459 A CN201611101459 A CN 201611101459A CN 107675073 A CN107675073 A CN 107675073A
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- potassium steel
- abrasive material
- steel high
- novel light
- steel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
Abstract
The present invention relates to potassium steel high-abrasive material field, specially a kind of novel light potassium steel high-abrasive material, the high-abrasive material can be used for the wear-resisting fields such as the mine of load, building materials, railway that withstand shocks, such as：Ball grinding machine lining board, grinder hammerhead and railway switch etc..By weight percentage, the chemical composition of the high-abrasive material is：C：0.90%~1.30%；Si：0.40%~0.90%；Mn：12%~20%；Al：1.0%~5.0%；Cr：1.0%~2.5%；La+Ce+Pr+Nd mischmetal：0.1%~0.5%；P<0.04%；S<0.04%；Surplus is Fe.The density of lightweight potassium steel high-abrasive material of the present invention is in 7.10~7.65g/cm3Between, the density than traditional potassium steel reduces 1.7%~8.5%.In addition, lightweight potassium steel high-abrasive material of the invention also has excellent toughness and plasticity, and its wearability improves more than 30% than traditional potassium steel high-abrasive material.
Description
Technical field
The present invention relates to potassium steel field, specially a kind of novel light potassium steel high-abrasive material, the material can be used for holding
The wear-resisting fields such as the mine of the load that is hit, building materials, railway, such as：Ball grinding machine lining board, grinder hammerhead and railway switch etc..
Background technology
Potassium steel the existing last 100 yearses of its history studied and used, is widely used as the high-abrasive material used earliest
In the metallurgy for the load that withstands shocks, mine, building materials, railway, the mechanized equipment such as electric power, coal throughout the year.But with potassium steel
Work condition environment residing for casting is complicated, while plant equipment running speed improves constantly, and causes high energy consumption, the pollution of the course of work
Serious and impact wear is violent, causes its life-span and mechanical efficiency low, it is difficult to reaches energy-conservation, economy, the purpose of environmental protection.
In recent years, there are some patents to the research of lightweight high manganese steel material, related application is such as：Patent application is public
Cloth number is CN103643110A patent, there is provided a kind of ball mill lightweight high manganese steel lining plate and preparation method thereof, the height
The chemical component weight percentage of manganese is：0.8%~1.0%C, 0.4%~0.6%Si, 20%~30%Mn, 5%
~10%Al, 0%~0.005%P, 0~0.003%S, surplus are Fe and inevitable impurity.Although the Gao Meng smelted
The existing high manganese steel lining plate density of the density ratio of steel liner plate reduces by 9%~15%, wearability than common potassium steel improve 35% with
On, but the high manganese steel lining plate smelted is organized as ferritic-austenitic duplex tissue, due to can be cut containing ferritic structure
The work hardening capacity of weak casting, causes the synthesis anti-wear performance of casting to reduce.
And for example patent application publication number is CN105154764A patent, there is provided a kind of disintegrating machine is served as a contrast with lightweight potassium steel
Plate and preparation method thereof, the chemical component weight percentage of the high manganese steel lining plate are：1.0%~1.5%C, 0.3%~
0.5%Si, 18%~26%Mn, 6%~8%Al, 0.002%~0.005%B, 0.01%~0.03% La and Ce mixing
Rare earth, P<0.01%th, S<0.03%, surplus Fe.Although the high manganese steel lining plate density smelted in patent reduces 9.0%~
15.0%, wearability compares common potassium steel and improves more than 40%, but on some middle-size and small-size disintegrating machines in use, due to
Shock loading is smaller suffered by casting, it is impossible to gives full play to its work hardening capacity, reduces the service life of casting, add life
Produce cost.
The content of the invention
In order to reduce energy resource consumption, use cost is reduced, it is preferable, low close it is an object of the invention to provide a kind of wearability
Spend, the novel light potassium steel high-abrasive material that low energy consumption and economy are more excellent, there is relatively low density, while have excellent
In terms of mechanical property especially anti-wear performance.
In order to realize the purpose of the present invention, the technical scheme of use is：
A kind of novel light potassium steel high-abrasive material, by weight percentage, the chemical composition of the material is：C：0.90%
~1.30%；Si：0.40%~0.90%；Mn：12%~20%；Al：1.0%~5.0%；Cr：1.0%~2.5%；La+
Ce+Pr+Nd mischmetal：0.1%~0.5%；P<0.04%；S<0.04%；Surplus is Fe.
Described novel light potassium steel high-abrasive material, the materials microstructure are single austenite structure, and density is 7.10
~7.65g/cm3Between.
Described novel light potassium steel high-abrasive material, Mn content preferably 17~19%.
Described novel light potassium steel high-abrasive material, Al content preferably 2.5~4.5%.
Described novel light potassium steel high-abrasive material, in La+Ce+Pr+Nd mischmetal, by weight percentage
Meter, La：17%~25%；Ce：55%~60%；Pr：4%~8%；Nd：14%~18%.
The foundation of novel light potassium steel high-abrasive material selection of chemical composition of the present invention is：
C：Potassium steel belongs to the higher steel grade of carbon content, and its anti-wear performance is heavily dependent on carbon content, carbon content
The fragility of too high steel is big, easily causes crackle and the bad elimination of carbide；The too low bad mechanical property of carbon content, wearability are also poor.
Si：Silicon is non-carbide former in potassium steel, and silicon can promote the precipitation of carbide in cast high manganese steels, with
The increase of silicone content, Carbide Precipitation quantity increase in steel, and make carbide become thick, reduce hillock wearability with it is tough
Property.But silicon can also significantly improve the yield strength of potassium steel.
Mn：Effect of the manganese in potassium steel mainly expands austenite phase field, stable austenite tissue, improves processing hardening
Ability.When the timing of carbon content one, the work hardening capacity of potassium steel can significantly improve with the rising of manganese content.
Al：Aluminium is as a kind of lightweight element, and its atomic radius is bigger than iron, and it is abnormal that solid solution Al can cause Fe matrix lattices to occur
Become, reduce the molal weight of steel and increase the molal volume of steel, and then reduce the density of steel；Al is to improve austenite heap simultaneously
Pile stacking fault energy (SFE) maximally effective element, will significantly affect the deformation mechanism of austenite.But Al is ferritic stabilizer, mistake
High Al content can reduce γ phase regions, promote the generation of ferritic structure, reduce the work hardening capacity of potassium steel.
Cr：Chromium potassium steel be mainly improve steel grade yield strength and anti-wear performance, while chromium can reduce austenite to
The rate of transformation of ferrite and carbide, makes C curve substantially move to right, and so as to reduce the critical cooling rate of quenching, causes steel
Hardenability increases and obtains air quenching effect, but the too high toughness that can cause steel of chromium content declines.
La+Ce+Pr+Nd mischmetal：Rare earth high-manganese steel can significantly improve the performance of potassium steel, increase potassium steel
Mechanical property, promote processing hardening, improve the wear resistence of potassium steel.
P:It is harmful element in potassium steel, is mainly shown as mechanical property, abrasion resistance and the casting for deteriorating potassium steel
Processing performance, it is necessary to strictly control its content.
S:Sulphur exists in steel typically in the form of FeS, and it can be dissolved in molten steel.It is substantial amounts of due to containing in potassium steel
The affinity of manganese, manganese and sulphur is more than iron, therefore MnS can largely be floated up in clinker as non-metallic inclusion and is discharged.
Advantages of the present invention and have the beneficial effect that：
1st, novel light potassium steel high-abrasive material of the invention is that appropriate Al is added on the basis of traditional potassium steel
Density is reduced, while greatly improves the performance of material, can meet that the use under wear-resisting field difference work condition environment will
Ask.
2nd, the density of novel light potassium steel high-abrasive material of the invention is in 7.10~7.65g/cm3Between, than
The density of ZGMn13Cr2 potassium steel reduces 1.7%~8.5%；In addition, lightweight potassium steel high-abrasive material of the invention is also
With excellent toughness and plasticity, its wearability improves more than 30% than ZG120Mn13Cr2 potassium steel.
Embodiment
In specific implementation process, novel light potassium steel of the invention is carried out in intermediate frequency furnace or vaccum sensitive stove
Melting, the Al elements in raw material are added with Al-Fe alloy forms, and it is 1500~1550 DEG C to add temperature, and pouring temperature control exists
1400~1480 DEG C, casting complete.Subsequent casting is incubated 1~4h at 950~1080 DEG C, and insulation terminates quickly to put casting
Enter tank and carry out Quenching Treatment, obtain lightweight potassium steel high-abrasive material.Wherein, preferably 1040~1060 DEG C of the tough temperature of casting water
When, it is incubated 1~2h.
The mechanical performance index of above-mentioned novel light potassium steel high-abrasive material is as follows：
Tensile strength：σb≥735MPa；Yield strength：σ0.2≥390MPa；Elongation：A >=20%；Impact absorbing energy：KU2
≥118J；Brinell hardness：HB≤300 (being preferably 200~300).
The specific embodiment of the present invention is described in detail below.
Embodiment 1：
In the present embodiment, by weight percentage, the chemical composition of the novel light potassium steel high-abrasive material is：
C：1.02%；Si：0.53%；Mn：13.89%；Al：2.25%；Cr：1.45%；La+Ce+Pr+Nd mixing is dilute
Soil：0.26%；P：0.03%；S：0.03%；Surplus is Fe.In La+Ce+Pr+Nd mischmetal, by weight percentage
Meter, La：20%；Ce：60%；Pr：5%；Nd：15%.
In the present embodiment, the preparation method of the novel light potassium steel high-abrasive material, implement according to following steps：
(1) required raw material is weighed by the percentage by weight of the formula components, is then added to melting in induction furnace, Al members
Element is added with Al-Fe alloy forms, and it is 1530 DEG C to add temperature, and tapping temperature is controlled at 1500 DEG C, when temperature is down to 1460 DEG C
When, in running castings.
(2) it is heat-treated：It is heated to 100 DEG C/h firing rate from normal temperature in 550 DEG C of temperature range, is incubated 1h, it
Firing rate is lifted to 180 DEG C/h afterwards, untill optimal 1050 DEG C of water-quenched slag, is incubated 1h；Insulation rapidly will after terminating
Casting is taken out from stove in input tank, surrounding time<1min, 40 DEG C of quenching end of a period water temperature.
In the present embodiment, the density of the novel light potassium steel high-abrasive material is 7.530g/cm3, measure lightweight potassium steel
Mechanical performance index reach as follows：
Tensile strength：σb=743MPa；Yield strength：σ0.2=402MPa；Elongation：A=22.7%；Impact absorbing energy：
KU2=126.7J；Brinell hardness：HB=213.
Embodiment 2：
In the present embodiment, by weight percentage, the chemical composition of the novel light potassium steel high-abrasive material is：
C：1.26%；Si：0.82%；Mn：19.21%；Al：4.52%；Cr：1.53%；La+Ce+Pr+Nd mixing is dilute
Soil：0.31%；P：0.015%；S：0.025%；Surplus is Fe.In La+Ce+Pr+Nd mischmetal, by weight percentage
Meter, La：18%；Ce：58%；Pr：8%；Nd：16%.
In the present embodiment, the preparation method of the novel light potassium steel high-abrasive material, implement according to following steps：
(1) required raw material is weighed by the percentage by weight of the formula components, is then added to melting in induction furnace, Al members
Element is added with Al-Fe alloy forms, and it is 1530 DEG C to add temperature, and tapping temperature is controlled at 1500 DEG C, when temperature is down to 1460 DEG C
When, in running castings.
(2) it is heat-treated：It is heated to 100 DEG C/h firing rate from normal temperature in 550 DEG C of temperature range, is incubated 1h, it
Firing rate is lifted to 180 DEG C/h afterwards, untill optimal 1050 DEG C of water-quenched slag, is incubated 1h；Insulation rapidly will after terminating
Casting is taken out from stove in input tank, surrounding time<1min, 40 DEG C of quenching end of a period water temperature.
In the present embodiment, the density of the novel light potassium steel high-abrasive material is 7.236g/cm3, measure lightweight potassium steel
Mechanical performance index reach as follows：
Tensile strength：σb=783MPa；Yield strength：σ0.2=425MPa；Elongation：A=27.6%；Impact absorbing energy：
KU2=149.5J；Brinell hardness：HB=224.
Embodiment 3：
In the present embodiment, by weight percentage, the chemical composition of the novel light potassium steel high-abrasive material is：
C：1.17%；Si：0.67%；Mn：18.06%；Al：3.15%；Cr：1.47%；La+Ce+Pr+Nd mixing is dilute
Soil：0.29%；P：0.013%；S：0.018%；Surplus is Fe.In La+Ce+Pr+Nd mischmetal, by weight percentage
Meter, La：21%；Ce：56%；Pr：6%；Nd：17%.
In the present embodiment, the preparation method of the novel light potassium steel high-abrasive material, implement according to following steps：
(1) required raw material is weighed by the percentage by weight of the formula components, is then added to melting in induction furnace, Al members
Element is added with Al-Fe alloy forms, and it is 1530 DEG C to add temperature, and tapping temperature is controlled at 1500 DEG C, when temperature is down to 1460 DEG C
When, in running castings.
(2) it is heat-treated：It is heated to 100 DEG C/h firing rate from normal temperature in 550 DEG C of temperature range, is incubated 1h, it
Firing rate is lifted to 180 DEG C/h afterwards, untill optimal 1050 DEG C of water-quenched slag, is incubated 1h；Insulation rapidly will after terminating
Casting is taken out from stove in input tank, surrounding time<1min, 40 DEG C of quenching end of a period water temperature.
In the present embodiment, the density of the novel light potassium steel high-abrasive material is 7.162g/cm3, measure lightweight potassium steel
Mechanical performance index reach as follows：
Tensile strength：σb=762MPa；Yield strength：σ0.2=416MPa；Elongation：A=25.2%；Impact absorbing energy：
KU2=139.1J；Brinell hardness：HB=217.
Embodiment result shows that novel light potassium steel high-abrasive material has relatively low density, while has excellent power
In terms of learning performance especially anti-wear performance, available for the wear-resisting field such as the mine for the load that withstands shocks, building materials, railway.
Embodiments of the invention are the foregoing is only, are not intended to limit the present invention, all uses replacement or equivalent transformation on an equal basis
The technical scheme that mode is obtained, all falls within protection scope of the present invention.
Claims (5)
- A kind of 1. novel light potassium steel high-abrasive material, it is characterised in that by weight percentage, the chemical composition of the material For：C：0.90%~1.30%；Si：0.40%~0.90%；Mn：12%~20%；Al：1.0%~5.0%；Cr：1.0% ~2.5%；La+Ce+Pr+Nd mischmetal：0.1%~0.5%；P<0.04%；S<0.04%；Surplus is Fe.
- 2. novel light potassium steel high-abrasive material according to claim 1, it is characterised in that the materials microstructure is single Austenite structure, density is in 7.10~7.65g/cm3Between.
- 3. novel light potassium steel high-abrasive material according to claim 1, it is characterised in that Mn content preferably 17~ 19%.
- 4. novel light potassium steel high-abrasive material according to claim 1, it is characterised in that Al content preferably 2.5~ 4.5%.
- 5. novel light potassium steel high-abrasive material according to claim 1, it is characterised in that in the mixed of La+Ce+Pr+Nd Close in rare earth, by weight percentage, La：17%~25%；Ce：55%~60%；Pr：4%~8%；Nd：14%~ 18%.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009084792A1 (en) * | 2007-12-28 | 2009-07-09 | Posco | High manganese steel having high strength and excellent delayed fracture resistance and manufacturing method thereof |
| CN103643110A (en) * | 2013-12-26 | 2014-03-19 | 北京科技大学 | Lightweight high-manganese steel liner plate for ball mill and manufacturing method of liner plate |
| CN105154764A (en) * | 2015-09-18 | 2015-12-16 | 鞍钢集团矿业公司 | Light-weight high manganese steel lining plate for crusher and preparation method of light-weight high manganese steel lining plate |
| CN106011653A (en) * | 2016-07-05 | 2016-10-12 | 东北大学 | High-strength high-toughness low-density steel and manufacturing method thereof |
-
2016
- 2016-12-05 CN CN201611101459.6A patent/CN107675073A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009084792A1 (en) * | 2007-12-28 | 2009-07-09 | Posco | High manganese steel having high strength and excellent delayed fracture resistance and manufacturing method thereof |
| CN103643110A (en) * | 2013-12-26 | 2014-03-19 | 北京科技大学 | Lightweight high-manganese steel liner plate for ball mill and manufacturing method of liner plate |
| CN105154764A (en) * | 2015-09-18 | 2015-12-16 | 鞍钢集团矿业公司 | Light-weight high manganese steel lining plate for crusher and preparation method of light-weight high manganese steel lining plate |
| CN106011653A (en) * | 2016-07-05 | 2016-10-12 | 东北大学 | High-strength high-toughness low-density steel and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈华辉: "《耐磨材料应用手册 第2版》", 31 October 2012, 机械工业出版社 * |
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