CN103924166B - A kind of preparation method of high mangaenese steel - Google Patents
A kind of preparation method of high mangaenese steel Download PDFInfo
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- CN103924166B CN103924166B CN201410173932.6A CN201410173932A CN103924166B CN 103924166 B CN103924166 B CN 103924166B CN 201410173932 A CN201410173932 A CN 201410173932A CN 103924166 B CN103924166 B CN 103924166B
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Abstract
The present invention relates to field of metallurgy, in particular to a kind of high mangaenese steel and preparation method thereof.This high mangaenese steel, by mass percentage, described high mangaenese steel comprises following composition: the Al of Mo, 0.1-3.0% of Cr, 0.01-1.0% of S, 0.01-1.0% of P, 0.01-0.05% of Si, 0.01-0.05% of Mn, 0.1-1.0% of C, 17.0-21.0% of 1.55-1.85%, trace element 0.26 ~ 0.4%, surplus are Fe.High mangaenese steel provided by the invention has higher intensity, better toughness and more strong hardness simultaneously; The present invention, by optimizing the preparation method of high mangaenese steel, improves the physicochemical property of high mangaenese steel; Easy handling, is easy to large-scale industrial production.
Description
Technical field
The present invention relates to field of metallurgy, in particular to a kind of high mangaenese steel and preparation method thereof.
Background technology
The feature of ultra-high strength and toughness manganese steel technique is: improve the processing snap cure ability of flour milling and improve hardness, strengthen the ability that flour milling opposing abrasive material cuts and cutter resistance to deformation weares and teares, the later standard weave of ultra-high strength and toughness hard manganese steel water-tenacity treatment is austenite, carbonization is granular, Dispersed precipitate is even, so matrix only has higher toughness, also maintains certain toughness while flour milling sclerosis, ultra-high strength and toughness manganese steel work hardening speed is fast, so can improve work-ing life less in use procedure wearing and tearing.Its hardness of high mangaenese steel of the prior art, intensity and toughness are thrown away and can not be met the higher needs of people simultaneously.
In view of this, special proposition the present invention.
Summary of the invention
The object of the present invention is to provide a kind of high mangaenese steel, described high mangaenese steel has better toughness simultaneously, higher intensity and the hardness of Geng Gao.
In order to realize object of the present invention, spy by the following technical solutions:
A kind of high mangaenese steel, by mass percentage, described high mangaenese steel comprises following composition: the Al of Mo, 0.1-3.0% of Cr, 0.01-1.0% of S, 0.01-1.0% of P, 0.01-0.05% of Si, 0.01-0.05% of Mn, 0.1-1.0% of C, 17.0-21.0% of 1.55-1.85%, trace element 0.26 ~ 0.4%, surplus are Fe.
The present invention, by the content of C, Mn, Fe in adjustment high mangaenese steel, by improving the chemical composition in high mangaenese steel, finally obtains the high mangaenese steel that a kind of compared with prior art intensity is higher, toughness better, hardness is higher.
The tensile strength of high mangaenese steel provided by the invention higher than 850Mpa, yield strength higher than 550Ppa, impelling strength is greater than 45% higher than 120J, unit elongation, initial hardness is greater than 230HB, impact after hardness is greater than 580HB, wear resistance is less than 0.0055J, there is extremely excellent mechanical property, hardness and wear resistance.
Preferably, described trace element comprises: Re, Ti and V.Different chemistry trace elements has positive or passive impact to the performance of high mangaenese steel, such as, the content increasing some metallic element in high mangaenese steel can improve its hardness and intensity, but its toughness can sharply decline, but contriver is found by large quantifier elimination, during Re, Ti and V containing trace in the chemical composition of high mangaenese steel, the hardness of the high mangaenese steel obtained, wear resistance and toughness can get a promotion simultaneously, have very excellent over-all properties.
Preferably, described high mangaenese steel comprises following composition: the V of Ti, 0.15-0.2% of the Re of Al, 0.03-0.05% of Mo, 1.0-3.0% of Cr, 0.5-1.0% of S, 0.5-1.0% of P, 0.03-0.05% of Si, 0.03-0.05% of Mn, 0.5-1.0% of C, 18.0-20.0% of 1.60-1.80%, 0.08-0.15%, surplus are Fe.Contriver is by the chemical composition in further optimization high mangaenese steel and content, particularly through test repeatedly, when determining Re, V and the Ti simultaneously containing aforementioned proportion in high mangaenese steel, the high mangaenese steel of preparation can be made to get a promotion in hardness, intensity and toughness simultaneously.The tensile strength of the high mangaenese steel obtained higher than 860Mpa, yield strength higher than 562Ppa, impelling strength is greater than 48% higher than 131J, unit elongation, initial hardness is greater than 237HB, impact after hardness is greater than 590HB, wear resistance is less than 0.0050J.
Because high mangaenese steel provided by the invention has very excellent hardness, wear resistance and toughness, this high mangaenese steel can be used for mine disintegrating apparatus, Improvement of Large Taper product, tooth plate product; Cement industry can be used in, ball mill equipment liner plate, steel ball product, disintegrating apparatus tup product; Metal disintegrating apparatus can be used in, tup product, liner plate product; Large-scale mine grip-pad product, bucket tooth product etc. can be used in.
Present invention also offers a kind of preparation method of described high mangaenese steel, comprise the following steps:
(1) use medium-frequency induction furnace melting high mangaenese steel alloy raw material, fill one deck lime at furnace bottom, the thickness of described lime is 30-50mm, described molten steel surface coverage slag former, and the thickness of described slag former is 30-50mm;
(2) fluorite working the slag viscosity is added;
(3) all change clearly until alloy raw material in stove, all pulled down by the slag former of metal bath surface, be incorporated as the fine aluminium of the 2.0-3.0% of alloy raw material weight fast, add slag former rapidly, the thickness of slag former is 30-50mm simultaneously;
(4) furnace temperature is raised to 1500 DEG C-1520 DEG C, has a power failure and leave standstill after 3-6 minute, tapping, cast, insulation.
In preparation method of the present invention, by furnace bottom and molten steel Surface pavement slag former, along with the carrying out of fusing, slag is covered with molten steel surface from start to finish, prevents molten steel air-breathing, is too oxidized, and can collect inclusion, heat preservation energy-saving, improves the physicochemical property of high mangaenese steel.
Preferably, described slag former is Al
2o
3.The present invention adopts Al
2o
3for slag former covers the surface of molten steel, Al
2o
3have that fusing point is low, basicity is high, uniform composition, granularity are little, and at high temperature easily cracked, and the features such as slagging speed is fast, thus alleviate the burden of converter slag-making.
The consumption of described fluorite is the 0.2-0.3% of alloy raw material quality.In the present invention, due to aluminum oxide of mating formation on the surface of molten steel and furnace bottom, by adding fluorite, can also the mobility of working the slag while both can ensureing the alkalescence of slag, and decrease the consumption of fluorite.
In described step (4), during tapping, put into the rare earth silicon of the 0.1-0.3% into alloy raw material weight in advance, build slag former rapidly after having tapped in casting ladle, molten steel calmness is poured into a mould for 4-6 minute later.
By mass percentage, described alloy raw material comprises the ferrochrome of the carbon steel of 70-75%, the ferromanganese of 23-28% and 1.0-2.0%.
The model of described carbon steel is GB699, and the model of described ferromanganese is selected from GB3795, FeMn75C6.8 and FeMn80C0.4, and the model of described ferrochrome is selected from GB5683 and FeCr69C1.0.
In described step (3), the model of described fine aluminium is GB1196.
Compared with prior art, the invention has the beneficial effects as follows:
(1) high mangaenese steel provided by the invention has higher intensity, better toughness and more strong hardness simultaneously;
(2) the present invention is by optimizing the preparation method of high mangaenese steel, improves the physicochemical property of high mangaenese steel;
(3) preparation method's easy handling of high mangaenese steel provided by the invention, is easy to large-scale industrial production.
Embodiment
Below by specific embodiment, summary of the invention of the present invention is described further, but does not therefore limit content of the present invention.
Embodiment one
Fill one deck lime at the furnace bottom of medium-frequency induction furnace, the thickness of described lkd layer is 30mm, loads high mangaenese steel alloy raw material, carry out melting in stove.By mass percentage, described high mangaenese steel alloy raw material is: the carbon steel GB699 of 70%, the ferromanganese GB3795 of 28% and 2.0% ferrochrome GB5683.
At described molten steel surface coverage Al
2o
3powder slag former, described Al
2o
3thickness be 50mm; In the process of melting, depending on slag viscosity, add some fluorites, working the slag mobility in good time.The addition of fluorite is 0.2% of alloy mass.All change clearly until alloy in stove, the slag former of metal bath surface is all pulled down, be incorporated as the fine aluminium GB1196 of 2.0% of alloy raw material weight fast, add Al rapidly simultaneously
2o
3powder, Al
2o
3thickness be 30mm.
Furnace temperature is raised to 1500 DEG C, has a power failure and leave standstill after 3 minutes, tapping, during tapping, put in advance in casting ladle into weight alloy 0.3% rare earth silicon, accomplish during tapping that dark mouth flows greatly, build insulating covering agent rapidly after having tapped, molten steel calmness is poured into a mould for 4 minutes later, insulation.
By mass percentage, described high mangaenese steel comprises following composition: the C of 1.55, the Mn of 21.0%, 1.0% Si, the P of 0.01%, S, the Cr of 1.0%, Mo, the Al of 0.1%, micro-Re, Ti and V, the surplus of 0.26% of 1.0% of 0.01% be Fe.
Embodiment two
Fill one deck lime at the furnace bottom of medium-frequency induction furnace, the thickness of described lkd layer is 50mm, loads high mangaenese steel alloy raw material, carry out melting in stove.By mass percentage, described high mangaenese steel alloy raw material is: the carbon steel GB699 of 75%, the ferromanganese FeMn75C6.8 of 23% and 2.0% ferrochrome FeCr69C1.0.
At described molten steel surface coverage Al
2o
3powder slag former, the thickness of described slag former is 30mm; In the process of melting, depending on slag viscosity, add some fluorites, working the slag mobility in good time.The addition of fluorite is 0.3% of alloy mass.All change clearly until alloy in stove, the slag former of metal bath surface is all pulled down, be incorporated as the fine aluminium GB1196 of 3.0% of alloy raw material weight fast, add Al rapidly simultaneously
2o
3powder, Al
2o
3thickness be 50mm.
Furnace temperature is raised to 1520 DEG C, has a power failure and leave standstill after 6 minutes, tapping, during tapping, put in advance in casting ladle into weight alloy 0.1% rare earth silicon, accomplish during tapping that dark mouth flows greatly, build insulating covering agent rapidly after having tapped, molten steel calmness is poured into a mould for 6 minutes later, insulation.
By mass percentage, described high mangaenese steel comprises following composition: the C of 1.85%, the Mn of 17.0%, 0.1% Si, 0.05% P, 0.05% S, 0.01% Cr, 0.01% Mo, 3.0% Al, trace element 0.4%, surplus is Fe.
Embodiment three
Fill one deck lime at the furnace bottom of medium-frequency induction furnace, the thickness of described lkd layer is 40mm, loads high mangaenese steel alloy raw material, carry out melting in stove.By mass percentage, described high mangaenese steel alloy raw material is: the carbon steel GB699 of 72.6%, the ferromanganese FeMn80C0.4 of 26% and 1.4% ferrochrome GB5683.
At described molten steel surface coverage Al
2o
3powder slag former, described Al
2o
3the thickness of powder is 40mm; In the process of melting, depending on slag viscosity, add some fluorites, working the slag mobility in good time.The addition of fluorite is 0.25% of alloy mass.All change clearly until alloy in stove, the slag former of metal bath surface is all pulled down, be incorporated as the fine aluminium GB1196 of 2.5% of alloy raw material weight fast, add Al rapidly simultaneously
2o
3powder, Al
2o
3thickness be 40mm.
Furnace temperature is raised to 1510 DEG C, has a power failure and leave standstill after 5 minutes, tapping, during tapping, put in advance in casting ladle into weight alloy 0.2% rare earth silicon, accomplish during tapping that dark mouth flows greatly, build insulating covering agent rapidly after having tapped, molten steel calmness is poured into a mould for 5 minutes later, insulation.
By mass percentage, described high mangaenese steel comprises following composition: the C of 1.60%, the Mn of 20.0%, 0.5% Si, the P of 0.03%, S, the Cr of 0.5%, Mo, the Al of 1.0%, the Re of 0.05% of 0.5% of 0.05%, the Ti of 0.15%, the V of 0.15%, surplus are Fe.
Embodiment four
Fill one deck lime at the furnace bottom of medium-frequency induction furnace, the thickness of described lkd layer is 40mm, loads high mangaenese steel alloy raw material, carry out melting in stove.By mass percentage, described high mangaenese steel alloy raw material is: the carbon steel GB699 of 73%, the ferromanganese FeMn75C6.8 of 26% and 1.0% ferrochrome GB5683.
At described molten steel surface coverage Al
2o
3powder slag former, described Al
2o
3the thickness of powder is 40mm; In the process of melting, depending on slag viscosity, add some fluorites, working the slag mobility in good time.The addition of fluorite is 0.24% of alloy mass.All change clearly until alloy in stove, the slag former of metal bath surface is all pulled down, be incorporated as the fine aluminium GB1196 of 2.0% of alloy raw material weight fast, add Al rapidly simultaneously
2o
3powder, Al
2o
3thickness be 40mm.
Furnace temperature is raised to 1510 DEG C, has a power failure and leave standstill after 5 minutes, tapping, during tapping, put in advance in casting ladle into weight alloy 0.15% rare earth silicon, accomplish during tapping that dark mouth flows greatly, build insulating covering agent rapidly after having tapped, molten steel calmness is poured into a mould for 5 minutes later, insulation.
By mass percentage, described high mangaenese steel comprises following composition: the C of 1.80%, the Mn of 18.0%, 1.0% Si, the P of 0.05%, S, the Cr of 1.0%, Mo, the Al of 3.0%, the Re of 0.03% of 1.0% of 0.03%, the Ti of 0.08%, the V of 0.2%, surplus are Fe.
Comparative example 1
This comparative example compared for the physicochemical property of high mangaenese steel prepared by the present invention and high mangaenese steel of the prior art.Comparing result is in table 1.
Comparative sample is Mn13Cr2 high manganese steel sheet, and manufacturer is Shanghai Li Jia special steel company limited.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative sample | |
| Tensile strength Mpa | 850 | 855 | 860 | 860 | 735 |
| Yield strength Mpa | 550 | 553 | 562 | 563 | 450 |
| Impelling strength J | 120 | 120 | 127 | 125 | 100 |
| Unit elongation % | 45 | 46 | 50 | 48 | 30 |
| Initial hardness HB | 230 | 232 | 237 | 237 | 230 |
| Hardness HB after impacting | 580 | 582 | 592 | 590 | 580 |
| Wear resistance J | 0.0055 | 0.0053 | 0.0050 | 0.0050 | 0.011 |
As known from Table 1, after the tensile strength of high mangaenese steel provided by the invention, yield strength, impelling strength, unit elongation, initial hardness, impact, hardness is all much larger than Mn13Cr2 high manganese steel sheet of the prior art, and the numerical value of its wear resistance is far below Mn13Cr2 high manganese steel sheet of the prior art.These physicochemical property parameters show, high mangaenese steel provided by the invention has higher intensity, better toughness, high mangaenese steel that hardness is higher simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the preparation method of a high mangaenese steel, it is characterized in that, described high mangaenese steel comprises following composition: the Al of Mo, 0.1-3.0% of Cr, 0.01-1.0% of S, 0.01-1.0% of P, 0.01-0.05% of Si, 0.01-0.05% of Mn, 0.1-1.0% of C, 17.0-21.0% of 1.55-1.85%, trace element 0.26 ~ 0.4%, surplus are Fe;
The preparation method of described high mangaenese steel comprises the following steps:
(1) use medium-frequency induction furnace melting high mangaenese steel alloy raw material, fill one deck lime at furnace bottom, the thickness of described lime is 30-50mm, and at molten steel surface coverage slag former, the thickness of the slag former of covering is 30-50mm;
(2) fluorite working the slag viscosity is added;
(3) all change clearly until alloy raw material in stove, all pulled down by the slag former of metal bath surface, be incorporated as the fine aluminium of the 2.0-3.0% of alloy raw material weight fast, add slag former rapidly, the thickness of slag former is 30-50mm simultaneously;
(4) furnace temperature is raised to 1500 DEG C-1520 DEG C, has a power failure and leave standstill after 3-6 minute, tapping, cast, insulation.
2. preparation method according to claim 1, is characterized in that, described slag former is Al
2o
3.
3. preparation method according to claim 1, is characterized in that, the consumption of described fluorite is the 0.2-0.3% of alloy raw material quality.
4. preparation method according to claim 1, is characterized in that, in described step (4), during tapping, in casting ladle, put into the rare earth silicon of the 0.1-0.3% into alloy raw material weight in advance, build slag former rapidly after having tapped, molten steel calmness is poured into a mould for 4-6 minute later.
5. preparation method according to claim 1, is characterized in that, by mass percentage, described alloy raw material comprises the ferrochrome of the carbon steel of 70-75%, the ferromanganese of 23-28% and 1.0-2.0%.
6. preparation method according to claim 5, is characterized in that, the model of described carbon steel is GB699, and the model of described ferromanganese is selected from GB3795, FeMn75C6.8 and FeMn80C0.4, and the model of described ferrochrome is selected from GB5683 and FeCr69C1.0.
7. preparation method according to claim 1, is characterized in that, in described step (3), the model of described fine aluminium is GB1196.
8. preparation method according to claim 1, is characterized in that, described trace element comprises: Re, Ti and V.
9. preparation method according to claim 1, it is characterized in that, described high mangaenese steel comprises following composition: the V of Ti, 0.15-0.2% of the Re of Al, 0.03-0.05% of Mo, 1.0-3.0% of Cr, 0.5-1.0% of S, 0.5-1.0% of P, 0.03-0.05% of Si, 0.03-0.05% of Mn, 0.5-1.0% of C, 18.0-20.0% of 1.60-1.80%, 0.08-0.15%, surplus are Fe.
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| CN104911504B (en) * | 2015-06-15 | 2017-02-22 | 三明市毅君机械铸造有限公司 | High-strength high-wear-resistance steel casting for super-huge type crusher and production process of steel casting |
| CN109750210B (en) * | 2018-12-29 | 2020-09-22 | 广西长城机械股份有限公司 | Production method of low-oxygen high-hydrogen-content manganese steel |
| CN113941430B (en) * | 2021-10-13 | 2023-05-02 | 铜陵有色金神耐磨材料有限责任公司 | Wear-resistant high manganese steel based on TWIP effect and nano precipitation strengthening, preparation method and application |
| CN114525442A (en) * | 2021-12-30 | 2022-05-24 | 广西富川正辉机械有限公司 | Method for producing high-purity high-carbon high-chromium-manganese 25 high-manganese steel material by helium blowing method |
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| CN101892427A (en) * | 2010-06-21 | 2010-11-24 | 桃江县正茂福利铸造有限公司 | High manganese steel and manufacturing method |
| CN101920216A (en) * | 2010-09-09 | 2010-12-22 | 淮阴工学院 | Wear-resistant hammer head of hammer crusher with movable installation position and manufacturing method thereof |
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| CN1068857A (en) * | 1991-10-10 | 1993-02-10 | 株洲市机械工业研究所 | The multicomponent alloy malleablized high-Mn steel |
| CN101135027A (en) * | 2006-09-01 | 2008-03-05 | 河南科技大学 | Gyratory breaker mortar rolled chemical composition control and thermal treatment process |
| CN101892427A (en) * | 2010-06-21 | 2010-11-24 | 桃江县正茂福利铸造有限公司 | High manganese steel and manufacturing method |
| CN101920216A (en) * | 2010-09-09 | 2010-12-22 | 淮阴工学院 | Wear-resistant hammer head of hammer crusher with movable installation position and manufacturing method thereof |
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