CN102225469A - Ceramic grid-enhanced metal wear-resistant composite and preparation method thereof - Google Patents
Ceramic grid-enhanced metal wear-resistant composite and preparation method thereof Download PDFInfo
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- CN102225469A CN102225469A CN 201110150166 CN201110150166A CN102225469A CN 102225469 A CN102225469 A CN 102225469A CN 201110150166 CN201110150166 CN 201110150166 CN 201110150166 A CN201110150166 A CN 201110150166A CN 102225469 A CN102225469 A CN 102225469A
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Abstract
The invention discloses a ceramic grid-enhanced metal wear-resistant composite and a preparation method thereof, wherein the ceramic grid-enhanced metal wear-resistant composite consists of a metal-base wear-resistant part body, a groove is arranged on the surface of the metal-base wear-resistant part body and internally provided with a ceramic grid, a clearance is reserved between the ceramic grid and the metal-base wear-resistant part body, and self-fluxing alloy powder sintering body in metallurgy combination with the metal-base wear-resistant part body is arranged in the clearance and the meshes of the ceramic grid. In the invention, under the vacuum sintering state, the ceramic grid can not produce defects such as cracking, breaking and the like; the self-fluxing alloy and the wear-resistant part matrix are in metallurgy combination, so that the combination with the ceramic grid is firm; the process is simple, and the prepared materials can achieve the needed hardness without thermal treatment; and the difficultly in combining the ceramic with the metal matrix can be solved, and the defects brought by s pouring process can be avoided.
Description
Technical field
The present invention relates to a kind of ceramic grid and strengthen abrasion-resistant metal composite and preparation method.Belong to the metal-base composites preparation field, be specially adapted to power plant, steel mill or cement plant coal pulverizer grinding roller and mill etc.
Background technology
Wearing and tearing are a kind of fundamental types that parts lost efficacy, and are prevalent in many industrial departments such as metallurgy, mine, electric power, machinery, national defence, military project, Aero-Space, and this has caused the significant wastage of material and the huge consumption of the energy.According to incompletely statistics, the present domestic annual metal wear resistant material that consumes is up to more than 5,000,000 tons, wherein because of causing the steel ball consumption of ball mill, wearing and tearing reach 1,000,000 tons every year, ball mill and various disintegrating machine liner plate consume nearly 400,000 tons, nearly 700,000 tons of roll consumption, various engineering excavation machines and loading machine bucket tooth, wear resistant conveying pipe road, grinder hammerhead, creeper tread and grinding roller, mill liner plate etc. consumptions surpass 600,000 tons, and 200,000 tons of railway switch and wheels, various mould steel consume nearly 1,500,000 tons.
Above data improve the abrasion resistance properties of plant equipment and parts as can be known, can significantly reduce energy resource consumption, enhance productivity.As everyone knows, pottery has high abrasion resistance properties, and metal has good processing toughness.These performances are difficult in the same material harmonious, and in order to solve this contradiction, using composite is to select preferably.
The ceramic base metallic composite can get up high rigidity, high abrasion resistance energy and the good toughness combination of metallic matrix of pottery, is a kind of widely used composite.
Common wear resistance castings is strengthened mainly to be divided into and is added particle and become particle strengthening with in-situ endogenic.Add ceramics particle strengthened method be divided into mechanical mixing method add ceramic particle, the infiltration casting add ceramic particle, centre spinning adds ceramic particle etc.
Yet adding the ceramic particle casting has three aspect drawbacks: the pollution of first particle and basal body interface and the generation of attachment make matrix and strengthen the reduction of particle adhesion; It two is to strengthen the restriction that proportion of particles is subjected to initial powder, and most particle sizes are all greater than 1 μ m, and grain shape is wedge angle matrix is isolated effect; It three is that thermodynamic stability is poor, strengthens particle and at high temperature easily decomposes.Though original position generates the ceramic particle method and is improved on foundry goods and ceramic wetability, have that the foundry goods wearing layer is thin, the influence factor of chemical reaction is many, wild phase only is defectives such as cermet, also be not easy to than the preparation of wear resistance castings greatly.
Chinese invention patent (CN 101585081A) adopts binding agent and specific mould to prepare the ceramics preparative body, pour into a mould then, simple to operate, can produce in batches, but because metal is different with ceramic thermal coefficient of expansion, and pottery is prone to crackle, particularly oxide ceramics crackle, broken phenomenon are more obvious in the casting process, in addition, combining between metal and the pottery is mechanical bond and can not realize metallurgical binding.Chinese invention patent (201010235198.3) adopts metal dust to mix with ceramic particle together with mould to carry out sintering in the vacuum drying oven sintering furnace; metal powder bonds together the formation precast body with ceramic particle; precast body is put into the end face of casting mold die cavity; and then precast body poured into a mould, form particulate reinforced composite.This technology has solved the difficult problem of oxide ceramics infiltration, and ceramic particle combine well with molten metal, but technology still complexity, particle and metal combination still are mechanical bond in essence.
Yet self-melting alloy is meant that fusing point is lower, deoxidation voluntarily in the melting process, slag making, can " wetting " substrate surface and present a class alloy of metallurgical binding.Behind the alloy graining, in solid solution, can form the dispersion-strengtherning phase of high rigidity, the intensity of alloy and hardness are improved.
At present, most self-melting alloy all add an amount of boron, element silicon and make in iron-based, Ni-based, cobalt-base alloys.Boron, silicon can reduce the fusing point of alloy, and can cause having between the solid phase of alloy and the liquid phase temperature range of broad, boron, element silicon all can with common matrix material, as nickel, cobalt, iron etc., at high temperature generate low-melting eutectic, alloy melting point is reduced significantly, and the fusing point of Ni-based, cobalt-based, iron-based self-melting alloy is respectively about 800 ℃, 800 ℃, 1000 ℃.In addition, boron, element silicon can improve hardness of alloy.
Summary of the invention
The object of the present invention is to provide good ceramic grid enhancing abrasion-resistant metal composite and the preparation method of anti-wear performance who is metallurgical binding and high strength interlock between simple, ceramic grid of a kind of technology and the metallic matrix by self-melting alloy.
Technical solution of the present invention is:
A kind of ceramic grid strengthens the abrasion-resistant metal composite, it is characterized in that: comprise Metal Substrate wearing piece body, at Metal Substrate wearing piece body surface groove is set, ceramic grid is set in the groove, gapped between pottery grid and the Metal Substrate wearing piece body, the self-fluxing alloyed powder sintered body with Metal Substrate wearing piece body metallurgical binding is set in the mesh of described gap and ceramic grid.
Described Metal Substrate wearing piece material is potassium steel, steel alloy, high carbon ferro-chrome or nickel chromium triangle low-alloy cast iron; Described ceramic network graticule mesh hole is column, screw-like, taper or rhombus; Described self-fluxing alloyed powder is Ni-based, iron-based or cobalt-based self-melting alloy; Described ceramic grid is cermet, oxide ceramics, nitride ceramics, carbide ceramics.
A kind of ceramic grid strengthens the preparation method of abrasion-resistant metal composite, it is characterized in that: comprise the following steps: successively
(1) is body with the Metal Substrate wearing piece, groove is set at body surface;
(2) the ceramic grid that will sinter is put into the wearing piece groove, gapped between pottery grid and the body, it is suitable for the mixed self-fluxing alloyed powder of absolute ethyl alcohol to fill up in the gap, the addition of absolute ethyl alcohol is 1%～4% of a self-fluxing alloyed powder quality, also fill full self-fluxing alloyed powder in the grid hole, and then wearing piece integral body is positioned over 80 ℃～100 ℃ dryings down;
(3) dried wearing piece integral body is put into vacuum drying oven, in temperature is that 1000 ℃～1150 ℃, vacuum are sintering under the 0.1Pa, self-fluxing alloyed powder generation fusion also produces firm metallurgical binding with the wearing piece matrix, and ceramic grid is wrapped in the wearing piece groove securely by self-melting alloy;
(4) after the cooling, from vacuum drying oven, take out, get product.
The pottery grid is cermet, oxide ceramics, nitride ceramics or carbide ceramics, and mesh can be cylindricality, taper, thread-shaped or rhombus.
Product surface hardness of the present invention is HRC65～75.
Advantage of the present invention:
(1) under the vacuum-sintering state, ceramic grid can not crack, defective such as cracked;
(2) bottom surface of self-melting alloy and wearing piece matrix, side, surface produce metallurgical binding, and form the metallic object grid and ceramic grid interlock firm;
(3) simple, the preparation material of technology just need not heat-treated and can be reached required hardness;
(4) solved pottery and metallic matrix a difficult problem, avoided molten iron high temperature that pouring technology brings to cause ceramic cracked defective down with the different of ceramic thermal coefficient of expansion in conjunction with difficulty;
(5) the wear-resisting workpiece surface is made of ceramic grid and self-melting alloy, makes wearing piece have higher wearability.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 has the coal pulverizer mill liner plate that ceramic grid strengthens.
Fig. 2 has the coal pulverizer roller surface liner plate that ceramic grid strengthens.
The specific embodiment
Embodiment 1: the coal pulverizer mill
(1) is body with coal pulverizer mill liner plate, groove is set at body surface;
(2) the ceramic grid that will sinter is put into the liner plate groove, gapped between pottery grid and the body, it is suitable for the mixed self-fluxing alloyed powder of absolute ethyl alcohol that in the gap and surface is filled up, the addition of absolute ethyl alcohol is 1%～4% of a self-fluxing alloyed powder quality, it is full suitable for the mixed self-fluxing alloyed powder of absolute ethyl alcohol also to fill in the grid hole, and then wearing piece integral body is positioned over 80 ℃～100 ℃ dryings down;
(3) dried liner plate integral body being put into the vacuum drying oven temperature is that 1000 ℃～1150 ℃, vacuum are sintering under the 0.1Pa, self-fluxing alloyed powder generation fusion also produces firm metallurgical binding with wearing piece bottom surface, side, surface, and ceramic grid is wrapped in the wearing piece groove securely by self-melting alloy.As if ceramic grid is cermet, then self-melting alloy and its generation metallurgical binding; If ceramic grid is oxide ceramics, nitride ceramics, carbide ceramics, then grid hole can be designed to cylindricality, taper or thread-shaped, and this structure can make ceramic network lattice and self-melting alloy produce firm interlocking;
(4) after the cooling, from vacuum drying oven, take out, liner plate is assembled in the mill surface, can obtain coal pulverizer mill surface and have the wearing composite material that ceramic grid strengthens body.
Embodiment 2: the coal pulverizer grinding roller
(1) is body with coal pulverizer roller surface liner plate, groove is set at body surface;
(2) the ceramic grid that will sinter is put into the liner plate groove, gapped between pottery grid and the body, it is suitable for the mixed self-fluxing alloyed powder of absolute ethyl alcohol to fill up in gap and the surface, the addition of absolute ethyl alcohol is 1%～4% of a self-fluxing alloyed powder quality, it is full suitable for the mixed self-fluxing alloyed powder of absolute ethyl alcohol also to fill in the grid hole, and then wearing piece integral body is positioned over 80 ℃～100 ℃ dryings down;
(3) dried liner plate integral body being put into the vacuum drying oven temperature is that 1000 ℃～1150 ℃, vacuum are sintering under the 0.1Pa, self-fluxing alloyed powder generation fusion also produces firm metallurgical binding with wearing piece bottom surface, side, surface, and ceramic grid is wrapped in the wearing piece groove securely by self-melting alloy.As if ceramic grid is cermet, then self-melting alloy and its generation metallurgical binding; If ceramic grid is oxide ceramics, nitride ceramics, carbide ceramics, then grid hole can be designed to cylindricality, taper or thread-shaped, and this structure can make ceramic network lattice and self-melting alloy produce firm interlocking;
(4) after the cooling, from vacuum drying oven, take out, liner plate is assembled in roller surface, can obtain the coal pulverizer roller surface and have the wearing composite material that ceramic grid strengthens body.
Claims (4)
1. a ceramic grid strengthens the abrasion-resistant metal composite, it is characterized in that: comprise Metal Substrate wearing piece body, at Metal Substrate wearing piece body surface groove is set, ceramic grid is set in the groove, gapped between pottery grid and the Metal Substrate wearing piece body, the self-fluxing alloyed powder sintered body with Metal Substrate wearing piece body metallurgical binding is set in the mesh of described gap and ceramic grid.
2. ceramic grid according to claim 1 strengthens the abrasion-resistant metal composite, and it is characterized in that: described Metal Substrate wearing piece material is potassium steel, steel alloy, high carbon ferro-chrome or nickel chromium triangle low-alloy cast iron; Described ceramic network graticule mesh hole is cylindric, screw-like, taper or diamond shaped; Described self-fluxing alloyed powder is Ni-based, iron-based or cobalt-based self-melting alloy; Described ceramic grid is cermet, oxide ceramics, nitride ceramics, carbide ceramics.
3. the preparation method of the described ceramic grid enhancing abrasion-resistant metal composite of claim 1 is characterized in that: comprise the following steps: successively
(1) is body with the Metal Substrate wearing piece, groove is set at body surface;
(2) the ceramic grid that will sinter is put into the wearing piece groove, gapped between pottery grid and the body, it is suitable for the mixed self-fluxing alloyed powder of absolute ethyl alcohol that in the gap and surface is filled up, the addition of absolute ethyl alcohol is 1%～4% of a self-fluxing alloyed powder quality, also fill full self-fluxing alloyed powder in the grid hole, and then ceramic grid metal composite wearing piece integral body is positioned over 80 ℃～100 ℃ dryings down;
(3) dried ceramic grid metal composite wearing piece integral body is put into vacuum drying oven, in temperature is that 1000 ℃～1150 ℃, vacuum are sintering under the 0.1Pa, self-fluxing alloyed powder generation fusion also produces firm metallurgical binding with the wearing piece matrix, and ceramic grid is wrapped in the wearing piece groove securely by self-melting alloy;
(4) after the cooling, from vacuum drying oven, take out, get product.
4. ceramic grid according to claim 3 strengthens the preparation method of abrasion-resistant metal composite, it is characterized in that: ceramic grid is cermet, oxide ceramics, nitride ceramics or carbide ceramics, and mesh can be cylindricality, taper, thread-shaped or rhombus.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581271A (en) * | 2012-03-30 | 2012-07-18 | 吉林大学 | Powder metallurgy material mixing method |
| CN103131969A (en) * | 2013-03-07 | 2013-06-05 | 南通高欣金属陶瓷复合材料有限公司 | Ceramic grid enhanced metal matrix composite perform and preparation method thereof |
| CN103143699A (en) * | 2013-03-07 | 2013-06-12 | 南通高欣金属陶瓷复合材料有限公司 | Composite reinforced wear-resistant part of metal-ceramic prefabricated member and manufacturing method of composite reinforced wear-resistant part |
| CN103343301A (en) * | 2013-07-08 | 2013-10-09 | 昆明理工大学 | Preparation method of quincuncial pile network distribution ceramic/metal composite material |
| CN103357474A (en) * | 2013-08-07 | 2013-10-23 | 宁国市华丰耐磨材料有限公司 | Wearable steel ball with reinforced framework |
| CN103752817A (en) * | 2013-12-31 | 2014-04-30 | 吴江亿泰真空设备科技有限公司 | Wear-resisting plate and production method thereof |
| CN103769562A (en) * | 2014-01-22 | 2014-05-07 | 西安交通大学 | Preparation method for active element sintered ZTA (Zirconia Toughened Alumina) particulate reinforced steel based compound hammer |
| CN104520032A (en) * | 2012-07-31 | 2015-04-15 | Fl史密斯公司 | Method for producing a wear-resistant component |
| CN104549654A (en) * | 2015-01-12 | 2015-04-29 | 溧阳中材重型机器有限公司 | Abrasion-resistant device between grinding roller sleeve and grinding table lining plate for vertical grinder |
| CN104588664A (en) * | 2015-01-30 | 2015-05-06 | 上海工程技术大学 | Metal package ceramic substrate composite material and preparation method and application thereof |
| CN105709881A (en) * | 2014-12-02 | 2016-06-29 | 河北泰铭投资集团有限公司 | Multilayer composite superhigh-wear-resistant millstone tile and production method thereof |
| CN107740095A (en) * | 2017-10-19 | 2018-02-27 | 西安科技大学 | Metal composite wearing plate |
| CN108941561A (en) * | 2018-08-07 | 2018-12-07 | 吉林大学 | A kind of bionical components of coupling of high temperature resistant erosive wear |
| CN110337338A (en) * | 2017-02-23 | 2019-10-15 | 西门子股份公司 | Composite material and corresponding method for purposes of turbine application |
| CN110744064A (en) * | 2019-11-20 | 2020-02-04 | 中国人民解放军军事科学院国防科技创新研究院 | Metal ceramic composite lattice armor with three-dimensional constraint structure and preparation method and application thereof |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581271A (en) * | 2012-03-30 | 2012-07-18 | 吉林大学 | Powder metallurgy material mixing method |
| CN104520032A (en) * | 2012-07-31 | 2015-04-15 | Fl史密斯公司 | Method for producing a wear-resistant component |
| CN103131969B (en) * | 2013-03-07 | 2015-01-28 | 南通高欣金属陶瓷复合材料有限公司 | Ceramic grid enhanced metal matrix composite perform and preparation method thereof |
| CN103131969A (en) * | 2013-03-07 | 2013-06-05 | 南通高欣金属陶瓷复合材料有限公司 | Ceramic grid enhanced metal matrix composite perform and preparation method thereof |
| CN103143699A (en) * | 2013-03-07 | 2013-06-12 | 南通高欣金属陶瓷复合材料有限公司 | Composite reinforced wear-resistant part of metal-ceramic prefabricated member and manufacturing method of composite reinforced wear-resistant part |
| CN103343301A (en) * | 2013-07-08 | 2013-10-09 | 昆明理工大学 | Preparation method of quincuncial pile network distribution ceramic/metal composite material |
| CN103357474A (en) * | 2013-08-07 | 2013-10-23 | 宁国市华丰耐磨材料有限公司 | Wearable steel ball with reinforced framework |
| CN103752817A (en) * | 2013-12-31 | 2014-04-30 | 吴江亿泰真空设备科技有限公司 | Wear-resisting plate and production method thereof |
| CN103769562A (en) * | 2014-01-22 | 2014-05-07 | 西安交通大学 | Preparation method for active element sintered ZTA (Zirconia Toughened Alumina) particulate reinforced steel based compound hammer |
| CN103769562B (en) * | 2014-01-22 | 2016-03-02 | 西安交通大学 | A kind of preparation method of active element sintering ZTA particle enhanced steel iron-based composite hammer head |
| CN105709881A (en) * | 2014-12-02 | 2016-06-29 | 河北泰铭投资集团有限公司 | Multilayer composite superhigh-wear-resistant millstone tile and production method thereof |
| CN104549654A (en) * | 2015-01-12 | 2015-04-29 | 溧阳中材重型机器有限公司 | Abrasion-resistant device between grinding roller sleeve and grinding table lining plate for vertical grinder |
| CN104588664A (en) * | 2015-01-30 | 2015-05-06 | 上海工程技术大学 | Metal package ceramic substrate composite material and preparation method and application thereof |
| CN110337338A (en) * | 2017-02-23 | 2019-10-15 | 西门子股份公司 | Composite material and corresponding method for purposes of turbine application |
| CN107740095A (en) * | 2017-10-19 | 2018-02-27 | 西安科技大学 | Metal composite wearing plate |
| CN108941561A (en) * | 2018-08-07 | 2018-12-07 | 吉林大学 | A kind of bionical components of coupling of high temperature resistant erosive wear |
| CN110744064A (en) * | 2019-11-20 | 2020-02-04 | 中国人民解放军军事科学院国防科技创新研究院 | Metal ceramic composite lattice armor with three-dimensional constraint structure and preparation method and application thereof |
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