CN1814861A - Method for preparing multi-element mixed surface fused coating based on 2-D figure - Google Patents
Method for preparing multi-element mixed surface fused coating based on 2-D figure Download PDFInfo
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- CN1814861A CN1814861A CN 200610038627 CN200610038627A CN1814861A CN 1814861 A CN1814861 A CN 1814861A CN 200610038627 CN200610038627 CN 200610038627 CN 200610038627 A CN200610038627 A CN 200610038627A CN 1814861 A CN1814861 A CN 1814861A
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Abstract
This invention relates to a method for carrying out 2-D shaping on a metallic surface to prepare a multielement miscellaneous surface fused cover characterizing in molding a 2-D plane lattice according to the requirement of the metal matrix surface, then utilizing a digital control system to deliver powder with related components in terms of the needs of the parts and utilizing parameters of laser fused-cover technology to control the width and volume of the parts, which integrates the invalidation analysis theory, computer digital control technology and laser fused cover technology of the surface of a spare part to obtain a lattice multielement miscellaneous surface compound fused cover layer matched to the spare parts surface service condition.
Description
Technical field
The invention belongs to field of surface engineering technique, relate to a kind of technology that cladding laser surfaces prepares surface fused coating that is used for, refer in particular to a kind of by in the metallic surface based on the preparation method of the multi-element mixed surface fused coating of 2-D figure.
Background technology
According to developed country's statistics, the annual loss that causes because of reasons such as burn into wearing and tearing, fatigues accounts for 3%～5% of total value of production in national economy, and the direct economic loss that China causes because of corrosion every year reaches 20,000,000,000 yuan.There is the asset of equipments of several trillion yuan in China, annual equipment stopped production, scrap the loss that is caused and all exceed hundred billion yuan because of wearing and tearing and corrosion.Wearing and tearing take place at piece surface, and corrosion is from piece surface, and fatigue cracking is extended internally by the surface, and aging is the result of piece surface and medium reaction, even distortion also shows as the offsetting of surperficial relative position.So " crux " all is cosmetic issue.Therefore, utilize surface engineering technology, matrix surface generate one deck excellent performance and with the cladding layer of body material mortise, be the effective means that addresses the above problem.Cladding laser surfaces is that the metallic surface prepares cladding layer method commonly used.Because laser melting and coating technique has huge development potentiality, and can produce bigger economic benefit, therefore, each industrial advanced country all pays much attention to the research and the application of laser melting and coating technique in the world.As far back as the end of the seventies, U.S. AVCO company has carried out the research of laser melting and coating technique with regard to the many vulnerable parts of motor car engine, and has obtained the United States Patent (USP) (United States Patent 3952180) of laser melting coating.The research of China's laser melting and coating technique starts from the beginning of the eighties, Recent study work is very active, and produced a collection of relevant patent, as application number 98101293.0,92108749.7,03136919.7,200310108499.X, 92114666.3,03125212.5 etc.
The above laser melting coating of studying mainly concentrates on cladding and relevant device thereof, and used alloy of its cladding layer or matrix material are prepared before coating substantially, and the performance of cladding layer can not be carried out composition and microstructure design according to the performance requriements at each position of piece surface.
Summary of the invention
The present invention proposes a kind of preparation method of the multi-element mixed surface fused coating based on 2-D figure, and it can carry out the deficiency of composition and microstructure design according to the performance requriements at each position of piece surface, thereby obtains multi-element mixed compound surface cladding layer.
Realize that purpose technical scheme of the present invention is at first can requirement according to the property (merit) of metal base surface, carry out the moulding of two dimensional surface grid, utilize digital control system to send the powder of corresponding composition again, and control the cladding width and the cladding amount of each several part by laser cladding technological parameter such as selective light spot diameter, power, scan modes by the requirement at each position.
The present invention is based on the preparation method of the multi-element mixed surface fused coating of 2-D figure, comprise following each step:
The first step at first by failure analysis, is studied failure mechanism and Changing Pattern thereof targetedly, carries out surface micro-structure (performance) design and optimization on this basis.
In second step, property (merit) the energy requirement according to each position of metal base surface utilizes digital control system to carry out the moulding of two dimensional surface grid, and the grid angle is 15 °～90 °, and determines composition, cladding width and the cladding amount of each position cladding material;
The 3rd step, the metallic surface is cleared up, but sandblasting in case of necessity;
The 4th step, the requirement definite according to the first step, select each position cladding material and technology, carrying out cladding handles, by polynary compound synergistic effect, piece surface is carried out performance fitted, on the workpiece working-surface, form a series of and performance requriements optimization coating grid coupling and that have certain ingredients, density (spacing), width, thickness, angle and shape, bring into play the characteristic of each grid and the synergistic effect between grid, the performance characteristics that makes whole top coat is near the requirement of ideal (merit) energy.
The present invention not only can be used for the surface modification of metal parts, and can be used for the inefficacy of residual life, the manufacturing again of scrapping component, prolongs work-ing life, minimizing environmental pollution, save energy and the resource of product.
Advantage of the present invention is that failure analysis theory, computer numerical control technology and the laser melting and coating technique with piece surface carries out integrated use, overcome traditional cladding laser surfaces technology and can not carry out the deficiency of composition and microstructure design, thereby obtain multi-element mixed compound surface cladding layer according to the performance requriements at each position of piece surface.
1. treat treat surface and carry out failure analysis, the cladding composition of optimization design surface two-dimensional grid and each microcell makes the working order of whole cladding layer can requirement near ideal (merit);
2. laser beam carries out the heat effect that the back produced during one grid cladding preceding one grid is played the postheat treatment effect, helps reducing or eliminating of its internal stress, improves the quality and the bonding strength of cladding layer;
3. utilize that laser beam cladding formation and piece surface service condition are complementary, continuous, uniform multiple tracks (kind) function grid, each road grid is born corresponding effect, to satisfy property (merit) the energy requirement of part;
4. the composition of each microscopic units, width, pattern, distribution density are convenient to adjust, and can adjust the performance of cladding layer significantly.
Description of drawings
Fig. 1 is the surface fused coating synoptic diagram that cladding has antifriction and the wearing and tearing of " adaptivity " antifatigue on 45 steel matrix;
Fig. 2 is the surface cladding of manufacturing again of cylinder of internal combustion engine and the cylinder wear characteristic cladding layer synoptic diagram that is complementary.
1 is the solid lubrication grid cell among Fig. 1, and 2 is " adaptivity " antifatigue wearing and tearing grid cells, and 3 is basic cladding unit, and 4 are solid lubrication grid joint, and a, b, c are the width of each grid cell, and α is the grid angle.
I is near the district inner surface of cylinder liner top dead center among Fig. 2, and II is the stroke middle region, and III is the cylinder sleeve lower region; 5 are the sliding grid cell of solid, and 6 is basic cladding unit, and 7 are solid lubrication grid joint; D, e are the width of each grid cell, α
1And α
2Be I district and II district grid angle.
Embodiment
Utilize embodiment that the present invention is described in further detail below.
The preparation process of embodiment is: on the basis of surface failure theoretical analysis, carry out two-dimensional grid moulding and each microcell cladding layer optimizing components, utilize the relative movement of computer numerical control technology control laser beam and pending workpiece, treat treat surface and carry out laser radiation, simultaneously the powder for preparing is sprayed to pending list and, obtain the multi-element mixed composite cladding layer of gridding that is complementary with the piece surface service condition.
Embodiment one.
Metallic matrix: 45 steel, surface mesh moulding as shown in Figure 1, angle α is 20 °～90 °.1 is the solid lubrication grid cell among the figure, adopts MoS
2Be the solid lubrication phase, Ni base self-fluxing alloy is for cohering phase, MoS
2Be not less than 50%vol, form continuous, even, the crisscross solid lubrication network that requires to be complementary with lubricity optimization and be interconnected by joint 4 at workpiece surface; 2 is " adaptivity " antifatigue wearing and tearing grid cells among the figure, and the powder composition is Ti-50%atNi; 3 is basic cladding unit among the figure, and the employing granularity is that the SiCp of 14 μ m is the hard phase, and Ni base self-fluxing alloy is the matrix phase, and SiCp is not less than 10%vol, and this element area occupied is not less than 50%.The laser melting coating parameter is: laser power 1.5～3KW, spot diameter 2～5mm, sweep velocity 6～10mm/s, powder mass flow 2～4g/min.
Embodiment two.
Present embodiment is the manufacturing again of wear out failure cylinder of internal combustion engine, referring to Fig. 2.To clear up because of wear out failure cylinder of internal combustion engine internal surface, can grind off skim in case of necessity.According to the wear pattern on the working length of steam jacket surface, it is the most serious to distinguish the I wearing and tearing near the inner surface of cylinder liner top dead center, and stroke middle region II takes second place, and III is the lightest for lower region.Therefore, also by three zone design, as shown in Figure 2, angle α is 20 °～70 ° to the cladding grid.Wherein 5 for the sliding grid cell of solid, adopts MoS
2Be the solid lubrication phase, Ni base self-fluxing alloy is for cohering phase, MoS
2Be not less than 50%vol, form continuous, even, the crisscross solid lubrication network that requires to be complementary with lubricity optimization and be interconnected by joint 7, the grid angle α in I district at workpiece surface
1With the grid angle α of spacing a less than the II district
2With spacing b; 6 is basic cladding unit, and the employing granularity is that the SiCp of 14 μ m is the hard phase, and Ni base self-fluxing alloy is the matrix phase, and SiCp is not less than 10%vol, and SiCp is higher than II district and III district in the I district composition.The laser melting coating parameter is: laser power 1.5～3KW, spot diameter 2～5mm, sweep velocity 6～10mm/s, powder mass flow 2～4g/min.Cladding layer thickness is determined according to barrel wear situation and technical requirements, as it is excessive to wear and tear, can be at low layer elder generation cladding layer of Ni base alloy.
Claims (2)
1. based on the preparation method of the multi-element mixed surface fused coating of 2-D figure, it is characterized in that at first property or functional requirement according to metal base surface, carry out the moulding of two dimensional surface grid, utilize digital control system to send the powder of corresponding composition again, and control the cladding width and the cladding amount of each several part by laser cladding technological parameter such as selective light spot diameter, power, scan modes by the requirement at each position.
2. the preparation method of the multi-element mixed surface fused coating based on 2-D figure according to claim 1 is characterized in that:
The first step is at first carried out the design and the optimization of surface micro-structure or performance by failure analysis;
Second step, according to the property or the functional requirement at each position of metal base surface, utilize digital control system to carry out the moulding of two dimensional surface grid, the grid angle is 15 °～90 °, and determines composition, cladding width and the cladding amount of each position cladding material;
The 3rd step, the metallic surface is cleared up, but sandblasting in case of necessity;
The 4th step, the requirement definite according to the first step, select each position cladding material and technology, carry out cladding and handle, on the workpiece working-surface, form a series of and performance requriements optimization coating grid coupling and that have certain ingredients, density, width, thickness, angle and shape.
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| CN 200610038627 CN1814861A (en) | 2006-03-06 | 2006-03-06 | Method for preparing multi-element mixed surface fused coating based on 2-D figure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373467A (en) * | 2011-10-26 | 2012-03-14 | 昆明理工大学 | Preparation method of laser cladding coating of tridimensional space stacking net additive |
| CN103361640A (en) * | 2012-03-31 | 2013-10-23 | 深圳光启创新技术有限公司 | Metamaterial and processing method thereof |
| CN104451672A (en) * | 2014-12-18 | 2015-03-25 | 上海交通大学 | Laser powder deposition method for regulating and controlling interface morphology of thermal barrier coating |
| CN104451671A (en) * | 2014-12-18 | 2015-03-25 | 上海交通大学 | Laser processing method of thermal barrier coating of hot-end component of turbine |
| CN106794561A (en) * | 2014-10-21 | 2017-05-31 | 先进制造系统研究有限责任公司 | The manufacture method of composite component and composite component |
| CN110267762A (en) * | 2017-02-16 | 2019-09-20 | 卡特彼勒公司 | Clad structure and method |
| CN115537806A (en) * | 2022-10-19 | 2022-12-30 | 北京赛亿科技有限公司 | Manufacturing process of anti-caking furnace bottom roller |
-
2006
- 2006-03-06 CN CN 200610038627 patent/CN1814861A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373467A (en) * | 2011-10-26 | 2012-03-14 | 昆明理工大学 | Preparation method of laser cladding coating of tridimensional space stacking net additive |
| CN102373467B (en) * | 2011-10-26 | 2014-04-02 | 昆明理工大学 | Preparation method of laser cladding coating of tridimensional space stacking net additive |
| CN103361640A (en) * | 2012-03-31 | 2013-10-23 | 深圳光启创新技术有限公司 | Metamaterial and processing method thereof |
| CN106794561A (en) * | 2014-10-21 | 2017-05-31 | 先进制造系统研究有限责任公司 | The manufacture method of composite component and composite component |
| CN106794561B (en) * | 2014-10-21 | 2022-05-31 | 先进制造系统研究有限责任公司 | Composite member and method for manufacturing composite member |
| CN104451672A (en) * | 2014-12-18 | 2015-03-25 | 上海交通大学 | Laser powder deposition method for regulating and controlling interface morphology of thermal barrier coating |
| CN104451671A (en) * | 2014-12-18 | 2015-03-25 | 上海交通大学 | Laser processing method of thermal barrier coating of hot-end component of turbine |
| CN104451672B (en) * | 2014-12-18 | 2017-03-15 | 上海交通大学 | A kind of laser powder deposition process of regulation and control thermal barrier coating interface topography |
| CN110267762A (en) * | 2017-02-16 | 2019-09-20 | 卡特彼勒公司 | Clad structure and method |
| CN115537806A (en) * | 2022-10-19 | 2022-12-30 | 北京赛亿科技有限公司 | Manufacturing process of anti-caking furnace bottom roller |
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