CN102700182A - Indium composite surface texture - Google Patents

Indium composite surface texture Download PDF

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Publication number
CN102700182A
CN102700182A CN2012101637766A CN201210163776A CN102700182A CN 102700182 A CN102700182 A CN 102700182A CN 2012101637766 A CN2012101637766 A CN 2012101637766A CN 201210163776 A CN201210163776 A CN 201210163776A CN 102700182 A CN102700182 A CN 102700182A
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material layer
texture
indium composite
surperficial
texture unit
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CN2012101637766A
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CN102700182B (en
Inventor
林绍义
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Fujian Chuanzheng Communications College
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Fujian Chuanzheng Communications College
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Abstract

The invention discloses an indium composite surface texture which is characterized in that an indium material layer capable of promoting the formation of a lubricating oil absorption film is arranged on the surface of a mechanical part, the indium material layer and the surface material layer of the mechanical part are integrated into a whole to form an indium composite material layer, and then a surface texture is processed on the surface of the mechanical part provided with the indium composite material layer, the surface texture is formed by a plurality of surface texture units, the wall body of the upper part of a pit or a dent of each surface texture unit is the indium material layer, the other parts of the pit or dent of each surface texture unit are the surface material layers of the mechanical part, thereby forming the indium composite surface texture.

Description

Indium composite surface texture
Technical field
The present invention relates to indium composite surface texture.
Background technology
Fretting wear is the one of the main reasons of product failures such as machinery and automobile, and about 80% component of machine lost efficacy because various forms of wearing and tearing cause, brings economic loss to reach tens yuan because component of machine loses efficacy.
Surface texture is meant at the surface of friction pair that interconnects the contact machine components to process little texture pattern dot matrix such as pit with certain size and arrangement, indenture through certain process technology.
The present inventor is through for many years further investigation; Find in the machinery part surface generation relative motion process; Especially there is the machine components contact surface of fretting wear; The oil storage that indium composite surface texture is risen, physical and chemical adsorption performance and can in time make surface of friction pair form lubricating oil film, form the mechanism of action, the mantle friction factor and the frictional force mechanism of action to improving its contact surface of hydrodynamic lubrication and are mostly counted the Chinese scholars performance of leading surperficial texture of having appeared in the newspapers a great difference are arranged.Therefore, research indium composite surface texture has important use value and Practical significance.
Literature search and patent search result, the domestic related patent U.S. Patent No. reported in literature that does not also have indium composite surface texture at present.
Summary of the invention
Task of the present invention provides a kind of indium composite surface texture; Task of the present invention realizes through following technical scheme: indium composite surface texture of the present invention be provided with on the surface of machine components one can promote to form the lubricating oil adsorbed film the phosphide material layer; Described phosphide material layer and machinery part surface material layer are integrally formed; Form the indium composite layer, then, the texture on the Surface Machining surface of machine components with indium composite layer; Surface texture is made up of many surperficial texture unit; The pit of texture unit, surface or the top wall body of indenture are the phosphide material layer, and the pit of surperficial texture unit or the remainder of indenture are the machinery part surface material layer, form indium composite surface texture.
Can be provided with the transition material layer between described phosphide material layer and the machinery part surface material layer.
The surperficial texture unit of described indium composite surface texture is circular or oval or other shape face texture unit.
The spacing of described indium composite surface texture is big or small and distribution density receives amount of force according to machine components and the movement velocity speed designs; Each surperficial texture unit size that indium composite surface texture is formed: maximum length≤400 μ m, Breadth Maximum≤400 μ m, depth capacity≤50 μ m.
Phosphide material has a variety of, and phosphide material layer of the present invention must have the formation of promotion lubricating oil adsorbed film, also can be integrally formed unseparated characteristic with the machinery part surface material layer.
Compare with prior art; The correlation technique of indium composite surface texture of the present invention has significant improvement: 1. two aspect significant improvement of structure and material: set up a kind of and the lubricating oil of being selected for use (like N15 at piece surface; N22, N150, N220 etc. use industrial lubricating oil always; Automobile engine lubricating oil commonly used such as 15W/40) have promote to form the lubricating oil adsorbed film and be integrally formed and unseparated phosphide material layer with the machinery part surface material layer; Form the indium composite layer, the wellability of the materials at two layers of each texture unit, physical absorption are different with the chemisorbed performance, and significant improvement has all taken place for the structure of texture unit and material two aspects; 2. form film lubrication principle significant improvement: the surperficial texture unit (small pit) of indium composite surface texture has the performance of oil storage; When surperficial texture unit is full of lubricating oil; The phosphide material of each surperficial texture unit performances different with the wetting properties such as infiltration speed of the surface material layer of part, that form the lubricating oil adsorbed film are different, thereby when the machine components relative motion, phosphide material and the mating reaction of machinery part surface material layer; And agitate mutually; Effect strengthens, and promotes in time to form lubricating oil film, strengthens lubrication; When the surperficial texture cell mesh of indium composite surface texture is full of lubricating oil (lubricating oil underfill); Because the degree of depth≤50 μ m of surperficial texture unit; Two-layer material is different to lubricated oil surface tension, physical absorption is different with the chemisorbed performance, and mating reaction promotes in time to form lubricating oil film; Obviously promoted greasy property, had substantive different with the operation principle of general surface texture; When machinery part surface generation relative motion and frictional heating; Indium composite surface texture is because the particularity of phosphide material wetting property; It in time provides lubricated hot machine coupling, hot-fluid coupling with timely additional oil storage process lubricated, promotion formation lubricating oil film, and the wearing and tearing principle of reducing friction has substantive different with the operation principle of general surface texture; 3. form the significant improvement of hydrodynamic lubrication: the wellability of the surperficial phosphide material layer of surperficial texture unit is good; Physical absorption and chemisorbed performance are good; With the wetting property mating reaction of the material layer of piece surface, and two-layer material is different to lubricated oil surface tension, physical absorption is different with the chemisorbed performance, mating reaction; Promote to form hydrodynamic lubrication, thereby avoid the direct contact of machine components to reduce wearing and tearing; Have substantive different with the operation principle of general surface texture; 4. compound lubricated form: in the relative motion process of machine components, the phosphide material layer has self-lubricating property, with the oil storage of oil lubrication, texture unit with lubricatedly form compound lubricated form, has promoted greasy property; The spacing and the distribution density size of the shape of mating surface texture unit, size, the degree of depth, surperficial texture unit are optimized design; Have the obvious tribological property that improves the friction pair of machine components contact surface, thereby effectively reduce friction secondary fretting wear; 5. absorbing antifriction: the phosphide material layer can absorption portion vibrate; Absorption portion vibration, minimizing that the machine components that have fretting wear are had have significant application value because of there being lubricated inadequate fretting wear; It is lasting that indium composite surface texture has unique abrasive effect effect of reducing friction to the machine components contact surface that has fretting wear; Therefore, indium composite surface texture of the present invention has important use value and Practical significance.
The invention has the beneficial effects as follows, the fretting wear of the permanently effective minimizing machine components contact surface of ability, it is lasting especially to reduce fretting wear effect and effect, easy to use, simple in structure, and applicability is strong, and application cost is suitable, is fit to the characteristics of producing in batches.
Description of drawings
Fig. 1 is the amplification partial sectional view of texture unit of the indium composite surface texture of the embodiment of the invention 1.
Fig. 2 is the shape and structure sketch map of indium composite surface texture unit of the circle of the embodiment of the invention 1.
Fig. 3 is the amplification partial sectional view of texture unit of the indium composite surface texture of the embodiment of the invention 2.
Fig. 4 be the embodiment of the invention 2 the shape and structure sketch map of indium composite surface texture unit.
Numeral among the figure
1--phosphide material layer, 2--machinery part surface material layer, the surperficial texture unit that 3--is circular,
4-transition material layer, the oval-shaped surperficial texture of 5--unit.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Embodiment 1
Fig. 1 is the amplification partial sectional view of texture unit of the indium composite surface texture of the embodiment of the invention 1, and Fig. 2 is the shape and structure sketch map of indium composite surface texture unit of the circle of the embodiment of the invention 1.
Indium composite surface texture characteristic of the present invention is: with the karmarsch alloy material through Overheating Treatment; Process machine components through machining process, part be in contact with one another that the surface is cleaned, oil removing, rust cleaning, clean, dry up after, use electroplating process; Plating one deck has the phosphide material layer 1 that promotes to form the lubricating oil adsorbed film; Having of present embodiment promotes the phosphide material layer 1 that forms the lubricating oil adsorbed film to be Pb-Sn-Cu-In phosphide material layer, strengthens the qualitative control of plating, guarantees thickness of coating and coating quality; Phosphide material layer 1 becomes one with machinery part surface material layer 2 and does not separate, and forms the indium composite layer; Then; The texture on the Surface Machining surface of machine components with indium composite layer; Surface texture is made up of surperficial texture Unit 3 of numerous circles, the maximum gauge≤350 μ m of circular surperficial texture unit 3, depth capacity≤40 μ m; The bottom of the surperficial texture unit 3 that each is circular is circular arc or rounded, embodiment as shown in Figure 1; The circular surface texture unit 3 of every row is distributed as near the surperficial texture cell distribution in the middle of the machine components sparse, closeer near the surperficial texture cell distribution of machine components dual-side; Circular surperficial texture unit 3 appears to classify the unit matrix column distribution as, the distribution density of the surperficial texture of machinery part surface: 0.15; Clean then, wind does.Each texture unit just forms indium composite surface texture by promoting to form lubricating oil adsorbed film phosphide material layer (Pb-Sn-Cu-In phosphide material layer) and surface material layer formation.The pit of texture unit, surface or the top wall body of indenture are the phosphide material layer, and the pit of surperficial texture unit or the remainder of indenture are the machinery part surface material layer.
The circular surperficial texture unit of each of indium composite surface texture is made up of phosphide material layer and the surface material layer that promotion forms the lubricating oil adsorbed film, has improved the structure and the material of texture unit; The phosphide material layer has self-lubricating property, with the oil storage of oil lubrication, texture unit with lubricatedly form compound lubricated form, has promoted greasy property; Phosphide material layer and the mating reaction of piece surface material layer have greatly promoted this part and have been applied to micro-moving frictional wear field formation good lubrication; Softer and the wear-resisting phosphide material layer of material can absorption portion vibrate; Indium composite surface texture is improved the mantle friction factor of its contact surface, realizes the good abrasive effect of reducing friction, and it is lasting especially to reduce fretting wear effect and effect.
Embodiment 2
Fig. 3 is the amplification partial sectional view of texture unit of the indium composite surface texture of present embodiment 2, and Fig. 4 is the shape and structure sketch map of the indium composite surface texture unit of embodiment 2.
So indium composite surface texture characteristic of the present invention is being gained in strength through Overheating Treatment with the AlSn40 material; Process machine components through machining process; Part be in contact with one another that the surface is cleaned, after oil removing, rust cleaning, cleaning, wind do; Use electroplating process, plate layer of copper nickel alloy material layer as transition material layer 4; After cleaning, wind are done; Use electroplating technology again and plate the Pb-Sn-Cu-In phosphide material layer 1 that one deck has promotion formation lubricating oil adsorbed film; Strengthen electroplating technology and qualitative control; Phosphide material layer 1 becomes one with transition material layer 4 and does not come off, and forms composite layer, and the transition material layer is the transition material layer of corronil between phosphide material layer and the machinery part surface material layer; The transition material layer 4 of corronil plays the effect that stops phosphide material layer 1 to be diffused into machinery part surface material layer 2 because of the part frictional heating; After cleaning, wind are done; Then; The texture on the Surface Machining surface of machine components with indium composite layer, surperficial texture is formed embodiment as shown in Figure 4 by the surperficial texture unit 3 of numerous circles with oval-shaped surperficial texture unit 5; Its arranged distribution is near being circular surperficial texture unit 3 in the middle of the machine components and distributing sparse; Be followed successively by the surperficial texture unit 3 of arranging circle in per 4 row's oblong surface texture unit 5, per 4 near the part both sides and hocket, closeer near the surperficial texture cell distribution of machine components both sides, the distribution density of surperficial texture: 0.12.Each surperficial texture unit size is maximum length≤400 μ m, Breadth Maximum≤300 μ m, depth capacity≤40 μ m; Each texture unit is by promoting the phosphide material layer, transition material layer and the surface material layer that form the lubricating oil adsorbed film to constitute.
The bottom of the oval-shaped surperficial texture of the surperficial texture unit 5 of indium composite surface texture is circular arc, and the bottom of circular surperficial texture unit 3 is circular arc, and is as shown in Figure 3, forms indium composite surface texture.The pit of texture unit, surface or the top wall body of indenture are the phosphide material layer, and the pit of surperficial texture unit or the remainder of indenture are the machinery part surface material layer.
Each texture unit of indium composite surface texture has improved the structure and the material of texture unit by promoting the phosphide material layer that forms the lubricating oil adsorbed film to constitute with other material layer; Performances such as the infiltration speed of the two-layer material of each surperficial texture unit, physical and chemical adsorption are different, thereby the principle that the surperficial texture unit when the machine components relative motion forms lubricating oil film, wearing and tearing are lubricated, reduced friction in the hot machine coupling, the hot-fluid coupling that form hydrodynamic lubrication is different; Phosphide material has good corrosion resistance and wearability also to have very strong self-lubricating property, and is lubricated with the oil storage of oil lubrication, texture unit, forms composite lubricated; The phosphide material layer can absorption portion vibrate; To absorption portion vibration, the wearing and tearing significant application value of reducing friction that the machine components that have fretting wear have, it is lasting that the machine components contact surface that has fretting wear is had unique abrasive effect effect of reducing friction.

Claims (7)

1. indium composite surface texture; It is characterized in that: described indium composite surface texture be provided with on the surface of machine components one can promote to form the lubricating oil adsorbed film the phosphide material layer, described phosphide material layer and machinery part surface material layer are integrally formed, composition indium composite layer; Then; The texture on the Surface Machining surface of machine components with indium composite layer, surperficial texture is made up of many surperficial texture unit, and the pit of surperficial texture unit or the top wall body of indenture are the phosphide material layer; The pit of texture unit, surface or the remainder of indenture are the machinery part surface material layer, form indium composite surface texture.
2. indium composite surface texture according to claim 1 is characterized in that: be provided with the transition material layer between described phosphide material layer and the machinery part surface material layer.
3. indium composite surface texture according to claim 1 is characterized in that: the surperficial texture unit of described indium composite surface texture is circular or oval or other shape face texture unit.
4. indium composite surface texture according to claim 1 is characterized in that: each surperficial texture unit size that described indium composite surface texture is formed is maximum length≤400 μ m, Breadth Maximum≤400 μ m, depth capacity≤50 μ m.
5. indium composite surface texture according to claim 1; It is characterized in that: described indium composite surface texture is through Overheating Treatment with the karmarsch alloy material; Process machine components through machining process; Being in contact with one another that the surface is cleaned, after oil removing, rust cleaning, cleaning, wind do, using electroplating process of part, plate layer of copper nickel alloy material layer as the transition material layer; After cleaning, wind are done; Use electroplating technology again and plate the Pb-Sn-Cu-In phosphide material layer that one deck promotes to form the lubricating oil adsorbed film, then, the texture on the Surface Machining surface of machine components with indium composite layer; Surface texture is made up of the surperficial texture unit of numerous circles; Maximum gauge≤350 μ the m of circular surperficial texture unit, depth capacity≤40 μ m, the bottom of the surperficial texture unit that each is circular is circular arc or rounded; Clean then, wind does, and just forms indium composite surface texture.
6. indium composite surface texture according to claim 2; It is characterized in that: described indium composite surface texture is through Overheating Treatment with the AlSn40 material; Process machine components through machining process; Being in contact with one another that the surface is cleaned, after oil removing, rust cleaning, cleaning, wind do, plating layer of copper nickel alloy material layer at part as the transition material layer; After cleaning, wind are done; Plate the Pb-Sn-Cu-In phosphide material layer of one deck promotion formation lubricating oil adsorbed film; Phosphide material layer and transition material layer become one and do not come off; Form composite layer, the transition material layer is the transition material layer of corronil between phosphide material layer and the machinery part surface material layer; After cleaning, wind are done; Then; The texture on the Surface Machining surface of machine components with indium composite layer; Surface texture is made up of the surperficial texture unit and the oval-shaped surperficial texture unit of numerous circles, and each surperficial texture unit size is maximum length≤400 μ m, Breadth Maximum≤300 μ m, depth capacity≤40 μ m; Each texture unit is by promoting the phosphide material layer, transition material layer and the surface material layer that form the lubricating oil adsorbed film to constitute.
7. indium composite surface texture according to claim 3 is characterized in that: the bottom of described oval-shaped surperficial texture unit is circular arc, and the bottom of circular surperficial texture unit is circular arc.
CN201210163776.6A 2012-05-24 2012-05-24 Indium composite surface texture Expired - Fee Related CN102700182B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104228188A (en) * 2014-09-20 2014-12-24 福建船政交通职业学院 Surface texture of indium-iron grid-shaped spherical composite microcrystal composite layer
CN104228149A (en) * 2014-09-20 2014-12-24 福建船政交通职业学院 Surface texture of indium-magnesium composite spherical microcrystal composite layer
CN104228206A (en) * 2014-09-20 2014-12-24 福建船政交通职业学院 Indium-iron grid-shaped spherical composite microcrystal composite layer
CN104228150A (en) * 2014-09-20 2014-12-24 福建船政交通职业学院 Surface texture of indium-magnesium inwards-concave microcrystal composite layer
CN104260469A (en) * 2014-09-20 2015-01-07 福建船政交通职业学院 Indium-magnesium composite sphere microcrystalline composite layer
CN104290396A (en) * 2014-09-20 2015-01-21 福建船政交通职业学院 Concave indium-magnesium microcrystalline composite layer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377437A (en) * 1981-05-22 1983-03-22 Bell Telephone Laboratories, Incorporated Device lithography by selective ion implantation
US5635037A (en) * 1993-08-02 1997-06-03 Industrial Technology Research Institute Method of texture by in-situ masking and etching for thin film magnetic recording medium
CN2692409Y (en) * 2003-04-22 2005-04-13 刘会学 Shaft bushing
CN101804551A (en) * 2010-03-16 2010-08-18 西安交通大学 Method for preparing micro-nano composite texturing cutting tool by using femtosecond laser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377437A (en) * 1981-05-22 1983-03-22 Bell Telephone Laboratories, Incorporated Device lithography by selective ion implantation
US5635037A (en) * 1993-08-02 1997-06-03 Industrial Technology Research Institute Method of texture by in-situ masking and etching for thin film magnetic recording medium
CN2692409Y (en) * 2003-04-22 2005-04-13 刘会学 Shaft bushing
CN101804551A (en) * 2010-03-16 2010-08-18 西安交通大学 Method for preparing micro-nano composite texturing cutting tool by using femtosecond laser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
高希复: "《船舶柴油机强度》", 30 June 1992, 大连海运学院出版社 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104228188A (en) * 2014-09-20 2014-12-24 福建船政交通职业学院 Surface texture of indium-iron grid-shaped spherical composite microcrystal composite layer
CN104228149A (en) * 2014-09-20 2014-12-24 福建船政交通职业学院 Surface texture of indium-magnesium composite spherical microcrystal composite layer
CN104228206A (en) * 2014-09-20 2014-12-24 福建船政交通职业学院 Indium-iron grid-shaped spherical composite microcrystal composite layer
CN104228150A (en) * 2014-09-20 2014-12-24 福建船政交通职业学院 Surface texture of indium-magnesium inwards-concave microcrystal composite layer
CN104260469A (en) * 2014-09-20 2015-01-07 福建船政交通职业学院 Indium-magnesium composite sphere microcrystalline composite layer
CN104290396A (en) * 2014-09-20 2015-01-21 福建船政交通职业学院 Concave indium-magnesium microcrystalline composite layer
CN104228150B (en) * 2014-09-20 2015-12-02 福建船政交通职业学院 Indium magnesium indent crystallite composite bed Surface Texture
CN104228149B (en) * 2014-09-20 2015-12-09 福建船政交通职业学院 Indium magnesium composite balls crystallite composite bed Surface Texture
CN104228206B (en) * 2014-09-20 2016-04-13 福建船政交通职业学院 Indium iron netted ball compound crystallite composite bed
CN104260469B (en) * 2014-09-20 2016-04-13 福建船政交通职业学院 Indium magnesium composite balls crystallite composite bed

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