CN105352833A - Wear-resistant composite surface microstructure and wear resistance testing method - Google Patents
Wear-resistant composite surface microstructure and wear resistance testing method Download PDFInfo
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- CN105352833A CN105352833A CN201510677629.4A CN201510677629A CN105352833A CN 105352833 A CN105352833 A CN 105352833A CN 201510677629 A CN201510677629 A CN 201510677629A CN 105352833 A CN105352833 A CN 105352833A
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Abstract
The invention relates to a wear-resistant composite surface microstructure and a wear resistance testing method. The wear-resistant composite surface microstructure comprises a smooth board and a microstructure arranged on the surface of the smooth board; a plurality of grooves are mutually parallel; and a row of pits are arranged between every two adjacent grooves, and distance between every two adjacent pit in each row of pits is identical. The wear resistance testing method based on the wear-resistant composite surface microstructure comprises the following steps: (1) selecting the smooth board; (2) smearing grease; (3) carrying out friction test; and (4) calculating wear extent. According to the invention, the grooves can provide sufficient grease storage space for grease and the flowing scope of the grease is great, so mutual supply of grease at different positions and uniform wearing can be realized, the phenomenon of local wearing caused by lack of grease is eradicated; and the wear-resistant composite surface microstructure is simple and easily practicable to process and has wide application prospects, especially great application prospects in the field of moving parts of engineering machinery.
Description
Technical field
The present invention relates to wear-resisting composite surface microstructure and wear-resisting experimental technique, belong to surface and interface field of engineering technology.
Background technology
Current mechanical field scrapping and losing efficacy more than 50% is all because wearing and tearing.Along with the operation of machinery, the further unstable wear of abrasive particle that lubricating oil disappearance and wearing and tearing produce is all the principal element causing wear out failure.In order to improve the wearing quality of material, surface micro-structure is a kind of new technology of development in recent years.By in friction surface design depression or protruding, wearing quality can be improved to a certain extent.But present surface micro-structure all only designs single unit, comprise pit and projection, anti-attrition function singleness or deficiency.
Summary of the invention
In order to solve above-mentioned Problems existing, the invention discloses a kind of wear-resisting composite surface microstructure, have the complex function extending lubricant grease supply time and discharge abrasive dust, its concrete technical scheme is as follows:
Wear-resisting composite surface microstructure, comprise smooth plate face and the microstructure being arranged on surface, smooth plate face, described microstructure comprises several pits and some grooves,
Described pit be middle part towards smooth plate face inner recess, pit surrounding closed edge,
Described some grooves are parallel to each other, and are distributed with several pits between the groove of described arbitrary neighborhood, and described pit between the groove of arbitrary neighborhood is that a row or some rows and indention parallel are arranged,
Or the mutual vertical interlaced of described some grooves, the both sides of described groove are distributed with several pits.
Described some grooves are parallel to each other, and are provided with row's pit in the middle of the groove of arbitrary neighborhood, and the spacing between the pit often arranging arbitrary neighborhood in pit is equal.
Smooth flat or smooth arc-shaped surface are selected in described smooth plate face.
Described groove linearly shape, the random cross-sectional shape of groove is consistent, and the opening of described pit is rounded, and the A/F of described groove is equal with the opening diameter of pit.
The degree of depth of described pit is less than the thickness in smooth plate face, and the degree of depth of described groove is not more than 50% of the thickness in smooth plate face.
The aperture area sum of described groove and pit accounts for 1% ~ 50% of the smooth plate face total area.
Based on the wear-resisting experimental technique of wear-resisting composite surface microstructure, comprise following operation steps:
(1) smooth plate face is chosen: the smooth plate face choosing metal material, goes out pit and groove in the surface working in smooth plate face, and cleaning-drying, write down size and the weight in smooth plate face now;
(2) apply grease: grease on the surface smear in smooth plate face, and grease is filled up in pit and groove;
(3) antithesis friction pair is chosen: the plate face of material identical with smooth plate face and specification of choosing is as antithesis friction pair, and antithesis surface of friction pair is smooth, the now size of antithesis friction pair and weight under cleaning-drying postscript;
(4) friction test is carried out: be installed on frictional testing machine by the smooth plate face described in step (1) and the antithesis friction pair described in step (3) respectively, control identical pressure, with identical rotating speed, the time that friction-wear test is identical;
(5) wear extent is calculated: cleaning-drying is carried out respectively in the smooth plate face after the friction test of carrying out described in step (4) and antithesis friction pair, and the size of the smooth plate face write down respectively now and antithesis friction pair and weight, size before and after smooth plate interview is tested and weight contrast, by the size before and after the test of antithesis friction pair and weight contrast, calculate the wear extent of smooth plate face and antithesis friction pair.
No. 45 steel are selected in smooth plate face in described step (1), and the antithesis friction pair in described step (3) also selects No. 45 steel.
Smooth plate face in described step (1) is disc-shape, the diameter in smooth plate face is 60mm, thickness is 10mm, the pit diameter on surface, smooth plate face is 2mm, the degree of depth is 1mm, recess width is 2mm, the degree of depth is 1mm, antithesis friction pair in described step (3) is disc-shape, and the diameter of antithesis friction pair is 60mm, thickness is 10mm.
The pressure that in described step (4), frictional testing machine controls is 200N, and rotating speed is 200 revs/min, and the time of friction-wear test is 500 hours.
Principle of work of the present invention is:
The present invention utilizes two or more different surfaces microstructure to be interspersed or to distribute alternately, realize multi-functional anti-attrition effect, by the groove in smooth plate face, the abrasive dust that rubbing wear can be produced holds and discharges, and alleviates the abrasive wear on the surface in smooth plate face; Pit is for holding grease, and realize continuing supply grease in friction process, reduce friction factor, alleviate wearing and tearing, pit, simultaneously for holding abrasive dust, alleviates the abrasive wear on surface, thus greatly improves the abrasive resistance on surface.
After friction produces abrasive dust, abrasive dust enters into pit, after the grease in pit is extruded by abrasive dust, enters into the friction surface in smooth plate face after oil extraction, allows grease infiltrate friction surface, reduces friction factor.
The invention has the beneficial effects as follows:
Groove of the present invention not only provides enough grease memory spaces, grease has larger flow range simultaneously, avoid the grease shortage of local, smooth plate face, cause wearing and tearing uneven, the mutual supply of grease of different parts can be realized, realize even wearing, and there is not the concentrated wear caused because lacking grease.
The present invention processes simple, has a extensive future, and especially on the moving component of engineering machinery, has very large application prospect.
Accompanying drawing explanation
Fig. 1 is the cavity disperse characteristic figure of embodiments of the invention 2,
Fig. 2 is the cavity disperse characteristic figure of embodiments of the invention 3,
Fig. 3 is the cavity disperse characteristic figure of embodiments of the invention 4,
Fig. 4 is the cavity disperse characteristic figure of embodiments of the invention 5,
Fig. 5 is the cavity disperse characteristic figure of embodiments of the invention 6,
Fig. 6 is the cavity disperse characteristic figure of embodiments of the invention 7.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.Following embodiment should be understood only be not used in for illustration of the present invention and limit the scope of the invention.
This wear-resisting composite surface microstructure, comprise smooth plate face and be arranged on the microstructure on surface, smooth plate face, described microstructure comprises several pits and some grooves, described pit be middle part towards smooth plate face inner recess, pit surrounding closed edge.The present invention is by arranging pit or groove on surface, smooth plate face, or pit and groove are arranged simultaneously, pit and groove have storage grease and hold the function of abrasive dust, before smooth plate face rubs, in pit and groove, fill up grease, grease on the surface smear of smooth plate face, when friction is carried out, smooth plate face produces abrasive dust, and abrasive dust can be stored in pit or groove, avoids abrasive dust to increase the wearing and tearing in smooth plate face.
Smooth flat or smooth arc-shaped surface are selected in described smooth plate face.Smooth flat and smooth arc-shaped surface all can adopt microstructure of the present invention to reduce wear.
The degree of depth of described pit is less than the thickness in smooth plate face, ensures that pit stores the function of lubricant.
The degree of depth of described groove is not more than 50% of the thickness in smooth plate face, and the aperture area sum of described groove and pit accounts for 1% ~ 50% of the smooth plate face total area.Ensure the bulk strength of structure.
Pit and groove have following two kinds of position distribution relations:
The first distributing position closes: described some grooves are parallel to each other, and are distributed with several pits between the groove of described arbitrary neighborhood, and described pit between the groove of arbitrary neighborhood be one to arrange or some rows and indention parallel are arranged.In friction process, grease can flow arbitrarily in a groove, and abrasive dust enters into pit or groove, and grease overflows from pit or groove, and grease spills into the surrounding of pit or groove, lubrication smooth plate face.
Another kind of distributing position closes and is: the mutual vertical interlaced of described some grooves, the both sides of described groove are distributed with several pits.Groove is mutually vertical, adds the region that groove can extend to, and enhances the effect of lubrication and discharge abrasive dust.
Based on the wear-resisting experimental technique of wear-resisting composite surface microstructure, comprise following operation steps:
(1) smooth plate face is chosen: the smooth plate face choosing metal material, goes out pit and groove in the surface working in smooth plate face, and cleaning-drying, write down size and the weight in smooth plate face now;
(2) apply grease: grease on the surface smear in smooth plate face, and grease is filled up in pit and groove;
(3) antithesis friction pair is chosen: the plate face of material identical with smooth plate face and specification of choosing is as antithesis friction pair, and antithesis surface of friction pair is smooth, the now size of antithesis friction pair and weight under cleaning-drying postscript;
(4) friction test is carried out: be installed on frictional testing machine by the smooth plate face described in step (1) and the antithesis friction pair described in step (3) respectively, control identical pressure, with identical rotating speed, the time that friction-wear test is identical;
(5) wear extent is calculated: cleaning-drying is carried out respectively in the smooth plate face after the friction test of carrying out described in step (4) and antithesis friction pair, and the size of the smooth plate face write down respectively now and antithesis friction pair and weight, size before and after smooth plate interview is tested and weight contrast, by the size before and after the test of antithesis friction pair and weight contrast, calculate the wear extent of smooth plate face and antithesis friction pair.
By the comparison of the wear extent in smooth plate face and the wear extent of antithesis friction pair, can show that the smooth plate surface wear amount being provided with pit in the present invention and groove is little, there is the effect reducing rubbing wear.The distribution of appropriate design pit and groove, obtains best effect simultaneously.
As a specific embodiment, the material in the inventive method, specification and friction test parameter can select following parameter:
No. 45 steel are selected in smooth plate face in described step (1), and the antithesis friction pair in described step (3) also selects No. 45 steel.
Smooth plate face in described step (1) is disc-shape, the diameter in smooth plate face is 60mm, thickness is 10mm, the pit diameter on surface, smooth plate face is 2mm, the degree of depth is 1mm, recess width is 2mm, the degree of depth is 1mm, antithesis friction pair in described step (3) is disc-shape, and the diameter of antithesis friction pair is 60mm, thickness is 10mm.
The pressure that in described step (4), frictional testing machine controls is 200N, and rotating speed is 200 revs/min, and the time of friction-wear test is 500 hours.
The relation of wear extent of the present invention and microstructure is described for four examples below:
Embodiment 1: smooth plate face selects diameter to be No. 45 wear-resisting disks of steel of 60mm, the thickness in smooth plate face is 10cm, the surface smear railway grease in smooth plate face, antithesis friction pair is No. 45 steel disks of same specification, respectively smooth plate face and antithesis friction pair are placed on frictional testing machine and rub, the pressure that frictional testing machine controls is 200N, and rotating speed is 200 revs/min, and the time of friction-wear test is 500 hours.
Embodiment 2: smooth plate face selects diameter to be No. 45 wear-resisting disks of steel of 60mm, the thickness in smooth plate face is 10cm, smooth plate face is evenly distributed with diameter is 2mm, the degree of depth is the pit of 1mm, minimum spacing between pit is 4mm, with reference to Figure of description 1, grease is filled, grease on the surface smear of smooth plate face in pit.Antithesis friction pair is No. 45 steel disks of same specification, is placed on frictional testing machine in smooth plate face and antithesis friction pair respectively and rubs, and the pressure that frictional testing machine controls is 200N, and rotating speed is 200 revs/min, and the time of friction-wear test is 500 hours.
Embodiment 3: smooth plate face selects diameter to be No. 45 wear-resisting disks of steel of 60mm, the thickness in smooth plate face is 10cm, smooth plate face is evenly distributed with width is 2mm, the degree of depth is the groove of 1mm, indention parallel distributes, spacing between groove is 10mm, with reference to Figure of description 2, fill grease in groove, grease on the surface smear of smooth plate face.Friction pair face is No. 45 steel disks of same specification, is placed on frictional testing machine in smooth plate face and antithesis friction pair respectively and rubs, and the pressure that frictional testing machine controls is 200N, and rotating speed is 200 revs/min, and the time of friction-wear test is 500 hours.
Embodiment 4: smooth plate face selects diameter to be No. 45 wear-resisting disks of steel of 60mm, and the thickness in smooth plate face is 10cm, smooth plate face is evenly distributed with width is 2mm, the degree of depth is the groove of 1mm, and indention parallel distributes, and the spacing between groove is 10mm; Groove intermediate distribution one arranges pit, and the diameter of pit is 2mm, the degree of depth is 1mm, and the spacing between pit is 4mm, with reference to Figure of description 3, fills grease, grease on the surface smear of smooth plate face in pit and groove.Friction pair face is No. 45 steel disks of same specification.Be placed on frictional testing machine in smooth plate face and antithesis friction pair respectively and rub, the pressure that frictional testing machine controls is 200N, and rotating speed is 200 revs/min, and the time of friction-wear test is 500 hours.
Embodiment 5: indention parallel distributes, and the spacing between groove is 20mm; Groove intermediate distribution three arranges pit, groove and often arrange pit be equally spaced, other parameters with embodiment 4, see Figure of description 4.
Embodiment 6: indention parallel distributes, and the spacing between groove is 15mm; Groove intermediate distribution two arranges pit, groove and often arrange pit be equally spaced, other parameters with embodiment 4, see Figure of description 5.
Embodiment 7: the mutual vertical interlaced of groove, the spacing between groove is 10mm, and the both sides of groove are distributed with two row's pits, groove and often arrange pit be equally spaced, other parameters with embodiment 4, see Figure of description 6.
Data in above-described embodiment 1-7 refer to table 1
| Embodiment | Friction factor | 500 hours wear extenies (mg) |
| 1 | 0.085 | 265 |
| 2 | 0.083 | 176 |
| 3 | 0.081 | 223 |
| 4 | 0.08 | 98 |
| 5 | 0.081 | 119 |
| 6 | 0.08 | 134 |
| 7 | 0.081 | 103 |
Table 1
Known by the test figure of above-described embodiment 1-7, be distributed on smooth plate face by pit and groove simultaneously, greatly can reduce wear extent.
The distribution design optimization on smooth plate face by pit and groove, optimum abrasion resistance properties can be obtained, known by the test figure of above-described embodiment 4-7, described some grooves are parallel to each other, several pits are distributed with between the groove of described arbitrary neighborhood, described pit between the groove of arbitrary neighborhood is that a row or some rows and indention parallel are arranged, and the mutual vertical interlaced of described some grooves, the both sides of described groove are distributed with several pits, all can reach good abrasion resistant effect, friction factor is little, wear extent is little, and described some grooves are parallel to each other, row's pit is provided with in the middle of the groove of arbitrary neighborhood, spacing between the pit often arranging arbitrary neighborhood in pit is equal, for most preferred embodiment, the friction factor of the arrangement of this kind of groove and pit is minimum, wear extent is minimum.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also comprises the technical scheme be made up of above technical characteristic combination in any.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (10)
1. wear-resisting composite surface microstructure, is characterized in that the microstructure comprising smooth plate face He be arranged on surface, smooth plate face, and described microstructure comprises several pits and some grooves,
Described pit be middle part towards smooth plate face inner recess, pit surrounding closed edge,
Described some grooves are parallel to each other, and are distributed with several pits between the groove of described arbitrary neighborhood, and described pit between the groove of arbitrary neighborhood is that a row or some rows and indention parallel are arranged,
Or the mutual vertical interlaced of described some grooves, the both sides of described groove are distributed with several pits.
2. wear-resisting composite surface microstructure according to claim 1, is characterized in that described some grooves are parallel to each other, and is provided with row's pit in the middle of the groove of arbitrary neighborhood, and the spacing between the pit often arranging arbitrary neighborhood in pit is equal.
3. wear-resisting composite surface microstructure according to claim 2, is characterized in that smooth flat or smooth arc-shaped surface are selected in described smooth plate face.
4. wear-resisting composite surface microstructure according to claim 3, is characterized in that described groove linearly shape, and the random cross-sectional shape of groove is consistent, and the opening of described pit is rounded, and the A/F of described groove is equal with the opening diameter of pit.
5. wear-resisting composite surface microstructure according to claim 4, is characterized in that the degree of depth of described pit is less than the thickness in smooth plate face, and the degree of depth of described groove is not more than 50% of the thickness in smooth plate face.
6. wear-resisting composite surface microstructure according to claim 1, is characterized in that the aperture area sum of described groove and pit accounts for 1% ~ 50% of the smooth plate face total area.
7., based on the wear-resisting experimental technique of the wear-resisting composite surface microstructure described in above arbitrary claim, it is characterized in that comprising following operation steps:
(1) smooth plate face is chosen: the smooth plate face choosing metal material, goes out pit and groove in the surface working in smooth plate face, and cleaning-drying, write down size and the weight in smooth plate face now;
(2) apply grease: grease on the surface smear in smooth plate face, and grease is filled up in pit and groove;
(3) antithesis friction pair is chosen: the plate face of material identical with smooth plate face and specification of choosing is as antithesis friction pair, and antithesis surface of friction pair is smooth, the now size of antithesis friction pair and weight under cleaning-drying postscript;
(4) friction test is carried out: be installed on frictional testing machine by the smooth plate face described in step (1) and the antithesis friction pair described in step (3) respectively, control identical pressure, with identical rotating speed, the time that friction-wear test is identical;
(5) wear extent is calculated: cleaning-drying is carried out respectively in the smooth plate face after the friction test of carrying out described in step (4) and antithesis friction pair, and the size of the smooth plate face write down respectively now and antithesis friction pair and weight, size before and after smooth plate interview is tested and weight contrast, by the size before and after the test of antithesis friction pair and weight contrast, calculate the wear extent of smooth plate face and antithesis friction pair.
8. wear-resisting experimental technique according to claim 7, it is characterized in that No. 45 steel are selected in the smooth plate face in described step (1), the antithesis friction pair in described step (3) also selects No. 45 steel.
9. wear-resisting experimental technique according to claim 8, it is characterized in that the smooth plate face in described step (1) is disc-shape, the diameter in smooth plate face is 60mm, thickness is 10mm, the pit diameter on surface, smooth plate face is 2mm, the degree of depth is 1mm, recess width is 2mm, the degree of depth is 1mm, antithesis friction pair in described step (3) is disc-shape, and the diameter of antithesis friction pair is 60mm, thickness is 10mm.
10. wear-resisting experimental technique according to claim 9, it is characterized in that the pressure that in described step (4), frictional testing machine controls is 200N, rotating speed is 200 revs/min, and the time of friction-wear test is 500 hours.
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Cited By (1)
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