CN104388814B - A kind of Graphene modified steel - Google Patents
A kind of Graphene modified steel Download PDFInfo
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- CN104388814B CN104388814B CN201410461727.XA CN201410461727A CN104388814B CN 104388814 B CN104388814 B CN 104388814B CN 201410461727 A CN201410461727 A CN 201410461727A CN 104388814 B CN104388814 B CN 104388814B
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
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Abstract
The present invention relates to a kind of high-carbon steel, its carbon content is by percentage to the quality between 0.6-2.3%, and wherein, at least part of carbon is to exist with the form of Graphene.This high-carbon steel not only has high intensity, and has good toughness.
Description
Technical field
The present invention relates to steel, be specifically related to a kind of Graphene modified steel.
Background technology
Steel is phosphorus content iron-carbon alloy between 0.0218%-2.11%.Outside the essential element deironing of steel, carbon, also have silicon, manganese, sulfur, phosphorus etc..It is generally used on the metal parts needing intensity, hardness and wearability, such as cutting element, wirerope, piano wire, spring, cutter, for manufacturing the part bearing big load in heavy-duty machinery, such as frame of rolling mill, hydraulic press base etc.；For manufacturing part such as bolster, side frame, wheel and hitch etc. that stress withstands shocks again greatly on rolling stock, after being processed to form, part typically requires then through processing and tempering.Carbon content of steel is more high, and hardness after its heat treated, intensity and wearability are also more high.
The hardness of steel, intensity depend primarily on the carbon amounts of solid solution in steel, and improve with the increase of solid solution carbon amounts.When solid solution carbon amounts is more than 0.6%, after quenching, hardness is not further added by, and simply superfluous carbide increasing number, the wearability of steel slightly increases, and plasticity, toughness and elasticity decrease.We are in order to ensure its toughness and plasticity, and phosphorus content is usually no more than 1.7%, and after carbon content is more than 1.7%, along with the continuation of carbon content increases, intensity improves, and fragility is greatly lowered.For this, often according to use condition and to the intensity of steel, toughness coupling select different model steel.Such as, the little spring of stress or spring formula part, 65 steel of optional relatively low carbon amounts are manufactured.General steel can use electric furnace, open hearth, oxygen coverter to produce.Require that quality is higher or electric furnace smelting can be adopted to add vacuum consumable or electroslag remelting during very special quality.When smelting is melted, strictly control the content of chemical composition, particularly sulfur and phosphorus.
Summary of the invention
In order to solve problem above, the invention provides a kind of Graphene modified steel, increase rear fragility and also strain big problem mutually solving carbon content.
This shaped steel of Graphene according to the present invention, its carbon content is by percentage to the quality between 0.6-2.3%, and wherein, at least part of carbon is to exist with the form of Graphene.
Owing to introducing Graphene, according to the steel of the present invention even at carbon content up to 1.7% time can also keep desirable toughness, and can also continue to keep the intensity of steel.
Detailed description of the invention
In the present invention, in steel, at least part of carbon is to provide with Graphene form, for instance the 10-90% of institute's carbon containing, it is preferable that 30-90%.It is highly preferred that the ratio of the steel institute graphene-containing of different phosphorus content is also otherwise varied.Generally, the amount of introduced Graphene is not less than the 0.1% of steel product quality.When in steel without Graphene carbon source, the yield strength of this steel between 300-550MPa ,-40 DEG C of low-temperature impact toughness Akv60J-90J.When in steel, Graphene accounts for more than the 10% of institute's phosphorus content, the yield strength of this steel between 400-600MPa ,-40 DEG C of low-temperature impact toughness Akv80J-130J.
Graphene used in the present invention can be buied from market, and typical example is the Graphene that applicant oneself produces and sells.Chinese patent application the 201210367072.0th, No. 201410308860.1, the 201410398232.7th production method describing Graphene, its disclosure is expressly incorporated herein with reform.Suitable in the Graphene thickness of the present invention no more than 2nm, it is suitable between 0.335-2nm.Being more preferably the Graphene of 1-3 layer, its thickness is between 0.335-1nm.The number of plies of Graphene is more low, and the effect of its offer toughness is more good.
This production process is after the non-graphite olefinic carbon source removal part prepared by steel in raw material, introduces Graphene as carburant in anoxybiotic situation.This carburant is known.
Embodiment 1
Producing phosphorus content according to formula is the high-carbon steel of 0.6%, and wherein 10% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Embodiment 2
Producing phosphorus content according to formula is the high-carbon steel of 0.6%, and wherein 15% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Embodiment 3
Producing phosphorus content according to formula is the high-carbon steel of 0.6%, and wherein 30% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Comparative example 1
Producing phosphorus content according to formula is the high-carbon steel of 0.6%, and it is all common carbon, introduces with the form of carburant graphite powder, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Embodiment 4
Producing phosphorus content according to formula is the high-carbon steel of 1.2%, and wherein 20% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Embodiment 5
Producing phosphorus content according to formula is the high-carbon steel of 1.5%, and wherein 30% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Embodiment 6
Producing phosphorus content according to formula is the high-carbon steel of 1.7%, and wherein 40% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Comparative example 2
Producing phosphorus content according to formula is the high-carbon steel of 1.7%, and it is all common carbon, introduces with the form of carburant graphite powder, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Embodiment 7
Producing phosphorus content according to formula is the high-carbon steel of 2%, and wherein 30% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Embodiment 8
Producing phosphorus content according to formula is the high-carbon steel of 2.1%, and wherein 50% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Embodiment 9
Producing phosphorus content according to formula is the high-carbon steel of 2.3%, and wherein 80% is Graphene, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
Comparative example 3
Producing phosphorus content according to formula is the high-carbon steel of 2.3%, and it is all common carbon, introduces with the form of carburant graphite powder, and all the other compositions are Si content 0.2%, Mn content 0.5%, P content 0.01%, and surplus is Fe.
The yield strength of detection the various embodiments described above and comparative example and-40 DEG C of low-temperature impact toughness, be listed in table 1.
The performance parameter of each embodiment of table 1 and comparative sample
| Example | Yield strength/MPa | -40 DEG C of low-temperature impact toughness/J |
| Embodiment 1 | 400 | 120 |
| Embodiment 2 | 430 | 125 |
| Embodiment 3 | 432 | 126 |
| Comparative example 1 | 350 | 100 |
| Embodiment 4 | 480 | 110 |
| Embodiment 5 | 520 | 120 |
| Embodiment 6 | 523 | 122 |
| Comparative example 2 | 450 | 80 |
| Embodiment 7 | 550 | 110 |
| Embodiment 8 | 570 | 125 |
| Embodiment 9 | 580 | 125 |
| Comparative example 3 | 500 | 60 |
By embodiment and comparative example it is found that when not having Graphene in carbon source, yield strength is in rising trend along with increasing of carbon content, but-40 DEG C of low-temperature impact toughness decline；Time between phosphorus content 0.6%-1%, along with the increase of Graphene addition, yield strength is gradually increased, toughness also strengthens, when Graphene addition accounts for carbon source mass fraction 15%-20%, for optimum, both saved Graphene consumption and be further added by effect also without being obviously improved；Time between phosphorus content 1%-1.7%, along with the increase of Graphene addition, yield strength is gradually increased, toughness also strengthens, when Graphene addition accounts for carbon source mass fraction 30%-40%, for optimum, both saved Graphene consumption and be further added by effect also without being obviously improved；When phosphorus content is more than 1.7%, along with the increase of Graphene addition, yield strength is gradually increased, and toughness also strengthens, and when Graphene addition accounts for carbon source mass fraction 50%, for optimum, had both saved Graphene consumption and had been further added by effect also without being obviously improved.
Claims (3)
1. a Graphene modified steel, its carbon content is by percentage to the quality between 0.6-2.3%, and wherein, at least part of carbon is to exist with the form of Graphene, and when in steel, carbon content is between 0.6-1.0%, Graphene ratio in institute's carbon containing is 15-20%；When in steel, carbon content is between 1.0-1.7%, Graphene ratio in institute's carbon containing is 30-40%；When in steel, carbon content is between 1.7-2.3%, Graphene ratio in institute's carbon containing is 50%.
2. the Graphene modified steel described in claim 1, wherein, the thickness of described Graphene is 0.335-2.0 nanometer.
3. the production method of Graphene modified steel described in claim 1 or 2, it is characterised in that fusing steelmaking feed, after decarburization, in anoxybiotic situation, adds Graphene.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105908053B (en) * | 2016-05-27 | 2018-02-13 | 天津平高智能电气有限公司 | A kind of graphene stainless steel composite material and its preparation method and application |
| CN107043896A (en) * | 2017-03-04 | 2017-08-15 | 蒋培丽 | Anticorrosion steel and its forging technology |
| CN107058847A (en) * | 2017-03-23 | 2017-08-18 | 柳州弘蓝科技有限公司 | A kind of anti-ballistic materials |
| CN107686950A (en) * | 2017-08-30 | 2018-02-13 | 长沙理工大学 | A kind of graphene ferroalloy |
| CN107604260A (en) * | 2017-09-19 | 2018-01-19 | 安徽恒利增材制造科技有限公司 | A kind of ferrous alloy and preparation method thereof |
| CN108034907A (en) * | 2017-11-24 | 2018-05-15 | 万鑫精工（湖南）有限公司 | A kind of gear reducer input shaft |
| CN108893734B (en) * | 2018-07-02 | 2020-06-16 | 中北大学 | Low-carbon steel surface multiphase coating and preparation method thereof |
| CN115747622A (en) * | 2022-11-11 | 2023-03-07 | 唐山市丰润区兴泰耐磨材料有限公司 | Wear-resistant steel ball and preparation method thereof |
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| JP4319839B2 (en) * | 2003-01-27 | 2009-08-26 | 新日本製鐵株式会社 | High strength, high toughness high carbon steel wire |
| CN103626166A (en) * | 2012-08-28 | 2014-03-12 | 海洋王照明科技股份有限公司 | Graphene preparation method |
| CN102965590B (en) * | 2012-11-20 | 2015-12-09 | 江苏高博智融科技有限公司 | A kind of brazing and preparation thereof |
| CN103567434A (en) * | 2013-10-10 | 2014-02-12 | 铜陵国方水暖科技有限责任公司 | Powder metallurgy flange and preparation method thereof |
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