CN105177436B - A kind of high intensity, high tenacity, high-wear-resistant alloy liner plate - Google Patents
A kind of high intensity, high tenacity, high-wear-resistant alloy liner plate Download PDFInfo
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- CN105177436B CN105177436B CN201510461405.XA CN201510461405A CN105177436B CN 105177436 B CN105177436 B CN 105177436B CN 201510461405 A CN201510461405 A CN 201510461405A CN 105177436 B CN105177436 B CN 105177436B
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Abstract
A kind of high intensity, high tenacity, high-wear-resistant alloy liner plate, the alloy lining include the chemical composition of following percentage by weight：0.4 0.6% C, 0.6 1.0% Si, 17 19% Mn, 18 20% Cr, 1.0 1.5% V, 0.3 0.6% Nb, 0.1 0.3% Ti, 0.3 0.5% N, S≤0.03%, P≤0.03%, remaining is Fe.The present invention is by adding carbide former Cr, Mn, particularly carbide V, Nb, Ti and non-carbide formation element Si, the strong yield strength for improving austenitic steel of addition of N, the comprehensive function of multicomponent alloy element is given full play to, liner plate is set to harden in atmosphere, the metallographic structure of austenite+alloy carbon (nitrogen) compound is obtained, so as to be effectively improved the wearability and toughness of alloy lining.
Description
Technical field
The present invention relates to semi-autogenous mill alloy lining, specifically a kind of high intensity, high tenacity, high-wear-resistant alloy
Liner plate.
Background technology
Autogenous tumbling mill, also known as run-of-mine-milling machine, autogenous tumbling mill can process the ore of any property, especially crush stone
Effect is more preferable during the materials such as cotton, iron ore, copper mine, lime stone, gold mine, manganese ore.The maximum feature of autogenous tumbling mill is big comminution ratio, and it is given
Ore deposit is generally 300-400 millimeters（Special circumstances can be as big as 910 millimeters）, it is 0.1 that product granularity can be once ground into after autogenous grinding
Millimeter is following.Comminution ratio is up to 3000-4000, and the comminution ratio than ball mill or rod mill is several ten times larger.
And liner plate is the main easily worn part of autogenous tumbling mill, when being operated due to autogenous tumbling mill, liner plate will be rushed by medium and material
Hit, grind the effect such as stripping and ore pulp corrosion, form liner plate impact wear, fatigue wear, shearing abrasion, abrasive wear and chemistry rotten
Erosion etc., the prime cost that making liner plate turns into enterprise's production is paid.
It is current generally to use high carbon chromium manganese molybdenum pearlite wear-resisting steel liner plate（85Cr2MnMo）, its tensile strength is б b1000-
1300MPa, yield strength б s800-1000MPa, although its service life is higher than potassium steel, but easy fracture, and wearability is low, uncomfortable
For ultra-large type wet type semi-autogenous mill, such as making in Jiangxi Copper group Dexing copper mine Φ 10.37 × 5.19m wet types are Semi-Autogenous
It it is only 3-3.5 month with the life-span；In Taiyuan steel enterprise Lanxian County mining industry Co., Ltd（Iron ore）Φ 10.37 × 5.49m wet types
Service life in semi-autogenous mill is 60-65 days.Because ultra-large type wet type semi-autogenous mill barrel diameter is big, diameter is often beyond 10
More than rice, all than larger, the impact to lining board of grinder is big, and wear liner is very violent for feed preparation unit size and ore grinding steel ball.Therefore grind
Make a kind of high intensity, high tenacity, high abrasion, and low production cost, alloy lining simple for process, it appears both urgent
It is again particularly significant.
The content of the invention
It is applied to high abrasion, impact resistance it is an object of the invention to provide one kind, impact property is good, high high-strength of Rockwell hardness
Degree, high tenacity, high-wear-resistant alloy liner plate, to meet the process requirements of ultra-large type wet type semi-autogenous mill.
The present invention for solve the technical scheme that uses of above-mentioned technical problem for：A kind of high intensity, high tenacity, high-wear-resistant alloy
Liner plate, including following percentage by weight chemical composition：The Mn of the Si of the C of 0.4-0.6%, 0.6-1.0%, 17-19%, 18-20%
Cr, the V of 1.0-1.5%, the Nb of 0.3-0.6%, the Ti of 0.1-0.3%, the N of 0.3-0.5%, S≤0.03%, P≤0.03%, remaining
It is Fe.
The strong yield strength for improving austenitic steel of addition of nitrogen high, it can be ensured that be not likely to produce under the conditions of high impact stresses
Deformation and extension, while having high preliminary work hardening rate using austenitic matrix, greatly improve matrix hardness and improve wear-resisting
Property.
Vanadium, niobium, titanium are all strong carbon（Nitrogen）Compound formation element, by higher temperature solid solution, makes carbon（Nitrogen）Compound is fully molten
Solution, then disperse educt is large number of in ag(e)ing process, the carbon that is evenly distributed（Nitrogen）Compound Hard Inclusion, reaches high intensity, height
Hardness, the purpose of high-wearing feature.
By adding chromium in the alloy, ferrite can be solid-solution in and play a part of solution strengthening, again can be with the carbonization of steel
Thing forms various alloy carbides, and as chromium content increases, the intensity of alloy, plasticity, toughness increase.But with the addition of chromium
Amount increases, and heat treatment will become difficulty particularly in the case where phosphorus content is high, therefore the content of chromium chooses 1.0-1.5%；Manganese
Element can well improve the quenching degree of material, and can postpone ferritic precipitation when austenite is cooled down, and effectively act as to iron
Ferritic solution strengthening and Grain refinement.
A kind of high intensity of the present invention, high tenacity, the preparation technology of high-wear-resistant alloy liner plate, comprise the following steps：
1）Moulding：Using self-setting silicate process, adapted heat preservation rising head.
2）Melting：First plus steel scrap, ferrochrome, after fusing again plus manganese metal, then vanadium iron, ferro-niobium are added, finally plus nitrided ferro-chromium, titanium
Iron, 1550 DEG C -1560 DEG C of tapping temperature.
3）Cast：Pouring temperature is 1450 DEG C -1480 DEG C, using the padded 5-7 degree inclined casting of molding box, with the center of reducing
It is loose, obtain the casting of high-compactness.
4）Heat treatment：Solution treatment；Ageing Treatment.
Described solution treatment is：It is 1150 DEG C of ± 3 DEG C of water-cooled 2-4h in temperature.
Described Ageing Treatment is：It is 650 DEG C of ± 3 DEG C of air cooling 8-10h in temperature.
Circulating fan is installed in described aging oven.
The present invention is by adding carbide former Cr, Mn, particularly carbide V, Nb, Ti and non-carbon
The strong yield strength for improving austenitic steel of addition of compound formation element Si, N, has given full play to the synthesis of multicomponent alloy element
Effect, enables liner plate to harden in atmosphere, obtains austenite+alloy carbon（Nitrogen）The metallographic structure of compound, so as to effectively improve
The wearability and toughness of alloy lining.
Specific embodiment
With reference to specific embodiment, the present invention is further elaborated；
Embodiment one：
Each chemical constituent is got out by present invention proportioning, using self-setting silicate process, adapted heat preservation rising head is first plus useless
Steel, ferrochrome, add manganese metal again after fusing, then add vanadium iron, ferro-niobium, finally add nitrided ferro-chromium, ferrotianium, and 1550 DEG C of tapping temperature is poured
Note temperature is 1450 DEG C, using the padded 7 degree of inclined castings of molding box, to reduce center porosity, obtains the casting of high-compactness, then
It is 1147 DEG C of water-cooled 2h in temperature, then is 647 DEG C of air cooling 8h in temperature, that is, obtains a kind of high intensity of the invention, high tenacity, height
Anti-wear alloy lining board.
The chemical composition of the liner plate is (Wt%)：0.4% C, 0.6% Si, 17% Mn, 18% Cr, 1.0% V,
0.3% Nb, 0.1% Ti, 0.3% N, 0.02% S, 0.03% P, remaining is Fe.
Embodiment two
Each chemical constituent is got out by present invention proportioning, using self-setting silicate process, adapted heat preservation rising head is first plus useless
Steel, ferrochrome, add manganese metal again after fusing, then add vanadium iron, ferro-niobium, finally add nitrided ferro-chromium, ferrotianium, and 1560 DEG C of tapping temperature is poured
Note temperature is 1480 DEG C, using the padded 5 degree of inclined castings of molding box, to reduce center porosity, obtains the casting of high-compactness, then
Temperature be 1153 DEG C of water-cooled 4h, then temperature be 653 DEG C of air cooling 10h, that is, obtain a kind of high intensity of the invention, high tenacity,
High-wear-resistant alloy liner plate.
The chemical composition of the liner plate is (Wt%)：0.6% C, 1.0% Si, 19% Mn, 20% Cr, 1.5% V,
0.6% Nb, 0.3% Ti, 0.5% N, 0.03% S, 0.01% P, remaining is Fe.
Embodiment three
Each chemical constituent is got out by present invention proportioning, using self-setting silicate process, adapted heat preservation rising head is first plus useless
Steel, ferrochrome, add manganese metal again after fusing, then add vanadium iron, ferro-niobium, finally add nitrided ferro-chromium, ferrotianium, and 1555 DEG C of tapping temperature is poured
Note temperature is 1465 DEG C, using the padded 6 degree of inclined castings of molding box, to reduce center porosity, obtains the casting of high-compactness, then
It is 1150 DEG C of water-cooled 3h in temperature, then is 650 DEG C of air cooling 9h in temperature, that is, obtains a kind of high intensity of the invention, high tenacity, height
Anti-wear alloy lining board.
The chemical composition of the liner plate is (Wt%)：0.5% C, 0.8% Si, 18% Mn, 19% Cr, 1.3% V,
0.4% Nb, 0.2% Ti, 0.4% N, 0.02% S, 0.02% P, remaining is Fe.
To further illustrate performance of the invention, the present invention is made that contrast, such as following table with existing liner plate：
From the point of view of test data, the tensile strength of this product, yield strength non-notch impact flexibility and Rockwell hardness are remote
Higher than existing product.
In order to further verify effect of the invention, high intensity, high tenacity, high abrasion conjunction prepared by embodiment 1,2,3
Golden liner plate carries out industrial contrast test in Jiangxi Copper group Dexing copper mine.Making in Φ 10.37 × 5.19m wet types are Semi-Autogenous
It is 5.5-6 month with the life-span, and former liner plate service life is 3-3.5 month.In Taiyuan steel enterprise Lanxian County mining industry Co., Ltd
（Iron ore）Service life in Φ 10.37 × 5.49m wet type semi-autogenous mills is 100-110 days, and the service life of former liner plate is
60-65 days.The service life of product i.e. of the present invention is 1.5-2 times of raw material, is that user increased great economic benefit.
Finally it should be noted that above specific embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described in detail to the present invention with reference to preferred embodiment, it will be understood by those within the art that, can be right
Technical scheme is modified or equivalent, and without deviating from the spirit and scope of technical solution of the present invention, its is equal
Should cover in the middle of scope of the presently claimed invention.
Claims (3)
1. a kind of high intensity, high tenacity, the preparation technology of high-wear-resistant alloy liner plate, the alloy lining include following percentage by weight
Chemical composition：The Cr of the Mn of the Si of the C of 0.4-0.6%, 0.6-1.0%, 17-19%, 18-20%, 1.0-1.5%'s
The N of the Ti of the Nb of V, 0.3-0.6%, 0.1-0.3%, 0.3-0.5%, S≤0.03%, P≤0.03%, remaining is Fe；
Its preparation process is as follows：
（1）Moulding：Using self-setting silicate process, adapted heat preservation rising head；
（2）Melting：First plus steel scrap, ferrochrome, after fusing again plus manganese metal, then vanadium iron, ferro-niobium are added, finally plus nitrided ferro-chromium, ferrotianium
；
（3）Cast：Pouring temperature is 1450 DEG C -1480 DEG C, using the padded 5-7 degree inclined casting of molding box, with the center of reducing
It is loose, obtain the casting of high-compactness；
（4）Heat treatment：Solid solution temperature is 1150 DEG C of ± 3 DEG C of water-cooled 2-4h；Aging temperature be 650 DEG C ±
3 DEG C of air cooling 8-10h.
2. a kind of high intensity according to claim 1, high tenacity, the preparation technology of high-wear-resistant alloy liner plate, its feature
It is：During described Ageing Treatment, using being provided with circulating fan in aging oven.
3. a kind of high intensity according to claim 1, high tenacity, the preparation technology of high-wear-resistant alloy liner plate, its feature
It is：Described step（ 2）1550 DEG C -1560 DEG C of the tapping temperature of melting.
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| CN106756486A (en) * | 2016-12-14 | 2017-05-31 | 安徽瑞研新材料技术研究院有限公司 | A kind of wear resistant corrosion resistant mine alloy liner plate and preparation method thereof |
| CN108570625A (en) * | 2017-03-07 | 2018-09-25 | 北京环磨科技有限公司 | A kind of autogenous tumbling mill and semi-autogenous mill lining board special steel |
| CN108441785A (en) * | 2018-03-14 | 2018-08-24 | 马鞍山市万兴耐磨金属制造有限公司 | A kind of anticorrosive niobium alloy cast steel and its processing technology based on promotion yield point |
| CN112619790B (en) * | 2020-10-27 | 2022-11-01 | 江苏天沃重工科技有限公司 | Vertical shaft impact type sand making machine |
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| CN102433508A (en) * | 2011-12-17 | 2012-05-02 | 铜陵市明诚铸造有限责任公司 | Super-high manganese lining board of ball mill and preparation method thereof |
| CN103114245B (en) * | 2013-02-03 | 2015-09-30 | 宁波华电铸钢有限公司 | A kind of abrasion-proof backing block and preparation method thereof |
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