CN102145555A - Structure for improving bonding strength of belt groove substrate and coating - Google Patents
Structure for improving bonding strength of belt groove substrate and coating Download PDFInfo
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- CN102145555A CN102145555A CN2011100688893A CN201110068889A CN102145555A CN 102145555 A CN102145555 A CN 102145555A CN 2011100688893 A CN2011100688893 A CN 2011100688893A CN 201110068889 A CN201110068889 A CN 201110068889A CN 102145555 A CN102145555 A CN 102145555A
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Abstract
The invention relates to a structure for improving the bonding strength of a belt groove substrate and a coating, which is provided with a shallow groove formed on the surface of the substrate, the cross section of the shallow groove is in a dovetail shape, the included angle alpha between a left slope and a right slope is 10-16 DEG, all corner parts are fillets, and the depth L of the shallow groove is 0.15-0.2 mm. In the structure for improving the bonding strength of the belt groove substrate and the coating, provided by the invention, the surface of the substrate is provided with a dovetail groove, thereby increasing the resistance when the surface coating falls off from the substrate and enhancing the bonding strength. All the corner parts of the shallow groove are in smooth transition, thereby ensuring the coating quality and the bonding strength. When the structure is used for a stroke detecting device, a detection section positioned on a piston rod can be combined with a built-in stroke detecting device capable of outputting pulse signals to be used for detecting the stroke of the piston rod.
Description
Technical field
The present invention relates to a kind of structure that improves matrix and anchoring strength of coating, particularly a kind of structure that improves trough of belt matrix and anchoring strength of coating.
Background technology
For the changeable equipment of a few thing circumstance complication, anticorrosion, anti-wear performance require very high, thus must carry out the processing such as anticorrosion and wear-resisting of necessity to its surface, with guaranteed performance.In actual use, the bond strength of matrix and its face coat plays key effect to the service life of equipment or parts, and in a single day coating comes off, and then entire equipment or parts will lose efficacy.Matrix surface processing groove, as be used for device for detecting distance of travel etc., can influence coating quality, thereby reduce matrix and the surperficial bond strength that sprays, traditional groove is rectangle or V-shape, and the rotation angle position of groove can influence coating quality, discloses the structure of a kind of rectangle and V-groove respectively as U.S. Pat 3956973A and US2004155800, the matrix under these structures and the bond strength of its face coat are lower, thereby influence the matrix life-span.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome original trough of belt matrix and the lower deficiency of its face coat bond strength, the invention provides a kind of structure that improves trough of belt matrix and anchoring strength of coating.
The technical solution adopted for the present invention to solve the technical problems is: a kind of structure that improves trough of belt matrix and anchoring strength of coating, have the shallow trench that is opened in matrix surface, and described shallow trench cross sectional shape is a dove-tail form.
In order to guarantee bond strength and not influencing coating quality that the angle α of the left tilted surface of shallow trench and right tilted surface is 10 °～16 °.
In order to make coating and matrix bond firm, all rotation angle positions of described shallow trench are rounding.
When being used for device for detecting distance of travel, in order to guarantee the accuracy of detection of device for detecting distance of travel, the degree of depth L of described shallow trench is 0.15mm～0.2mm.
The invention has the beneficial effects as follows that a kind of structure that improves trough of belt matrix and anchoring strength of coating of the present invention is offered dovetail groove at matrix surface, increased the resistance of face coat when matrix comes off, improved bond strength.The rotation angle position rounding off of shallow trench has guaranteed coating quality and bond strength; When this structure is used for device for detecting distance of travel, be positioned at the detection segment of piston rod, can be used in combination, detect the piston rod stroke with the built-in device for detecting distance of travel of output pulse signal.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a kind of structural representation that improves the optimum embodiment of structure of trough of belt matrix and anchoring strength of coating of the present invention.
Fig. 2 is the schematic diagram that anchoring strength of coating is measured anchor clamps.
Fig. 3 measures hot-spraying coating bond strength sample schematic diagram.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is a B place partial enlarged drawing among Fig. 4.
Fig. 6 is the structural representation of shallow trench coating among the embodiment 2.
Fig. 7 is the structural representation of V-type groove in the comparative example 1.
Among the figure 1, shallow trench, 1-1, left tilted surface, 1-2, right tilted surface; the rotation angle position of 1-3, shallow trench, 1-4, prime coat, 1-5, protective layer; the angle of α, left tilted surface and right tilted surface, the degree of depth of L, shallow trench, the shallow-layer thickness of L0, prime coat; 2, wear pin; 3, sprayed coating, 4, Connection Block, 5, connecting rod; 6, sample, 7, the V-type groove.
The specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1, a kind of structural representation that improves the optimum embodiment of structure of trough of belt matrix and anchoring strength of coating of the present invention, has the shallow trench 1 that is opened in matrix surface, the cross sectional shape of shallow trench 1 is a dove-tail form, the angle α of left tilted surface 1-1 and right tilted surface 1-2 is 10 °～16 °, all rotation angle position 1-3 are rounding, and the degree of depth L of shallow trench 1 is 0.15mm～0.2mm, and width of rebate is 2mm.
It below is the bond strength method of testing.This method is applicable to the mensuration of hot-spraying coating bond strength, measures the testing machine that uses any kind that is used for tension test that satisfies static loading environment.The ability of testing machine is generally 50kN to 100kN, and precision is ± 1%.The anchor clamps that use on the testing machine have automatic adjustment function, guarantee not produce in test process eccentric load or moment of flexure to sample.Fig. 2 is that anchoring strength of coating is measured the anchor clamps schematic diagram.The adhesive that employing can make coating and antithesis test connect, its tensile strength satisfies the minimum requirements of anchoring strength of coating.Adhesive has enough viscosity, and the thickness that penetrates into coating can not arrive the coating faying face.
The computational methods of anchoring strength of coating: bond strength=peak load/sectional area.Keep two behind the gained bond strength value decimal point.
Be the 45# steel at material earlier, the bottom surface diameter is the dovetail groove that the cylinder outer round surface processing of 160mm vertically is spacedly distributed, notch between the dovetail groove bottom land width with dovetail groove at interval is identical, all rotation angle position 1-3 of dovetail groove are rounding, the left tilted surface 1-1 of dovetail groove and the angle of right tilted surface 1-2 are 12 °, the degree of depth L of dovetail groove is 0.17mm, width of rebate is 2mm, and spraying prime coat 1-4, matrix surface is a burnishing surface behind the spraying prime coat 1-4, as shown in Figure 1, shallow-layer thickness L0 is 0.08mm, and prime coat 1-4 sprayed on material is NiCr base and NiCrAl base used for hot spraying powder composite mixture; Coating thickness is the protective layer 1-5 of 0.2mm on prime coat 1-4 surface, makes the workpiece outer surface be a burnishing surface, and material is a metal oxide ceramic.Sample is made up of matrix and mating plate, matrix and mating plate be length 38mm and wherein a bottom surface be the cuboid block of cambered surface.Coating is on matrix, and matrix and mating plate can recycle.Matrix material is consistent with the matrix material of hot-spraying coating part with the mating plate material.Fig. 3 is for measuring hot-spraying coating bond strength sample schematic diagram, and as shown in FIG., sample is taken from above-mentioned cylindrical outer ring portion, and this sample one bottom surface is the convex globoidal of φ 160mm, and another bottom surface is that size is 25
-0.2Mm * 25
-0.2The square of mm, the high L1 of sample is 38mm.Sample square bottom surface end has screwed hole, and the maximum of screwed hole degree of depth L2 is 19mm, and L3 is 12.3mm, and specimen surface and thread center's line total length perpendicularity are 0.075mm.The convex globoidal of sample is as the spraying aspect, and the spraying sample is made by the identical technology of spraying part.The faying face of mating plate and sample sprayed coating is the cancave cambered surface of φ 160mm, does not process groove on this cancave cambered surface.
According to the adhesive manufacturer specification matrix is connected with mating plate, and compresses, guarantee to connect the concentricity of sample up to adhesive curing.Paper or the cloth adhesive that this sample junction is unnecessary with softness are wiped.Sample is placed on the anchor clamps, carry out the test of matrix and anchoring strength of coating.
After doing two groups of tests, the gained bond strength is as shown in table 1.
Embodiment 2
Embodiment 2 makes test sample and mating plate with embodiment 1 identical step, and its difference is: prime coat 1-4 thickness is even, and as shown in Figure 6, coating thickness is 0.08mm.After doing two groups of tests, the gained bond strength is as shown in table 1.
Comparative example 1
Be that 45# steel, bottom surface diameter are the V-type groove 7 that the cylinder outer round surface processing of 160mm vertically is spacedly distributed earlier at material, notch between the V-type groove 7 is identical with V-type groove 7 bottom land width at interval, the left tilted surface of V-type groove 7 and the angle of right tilted surface are 40 °, the degree of depth of V-type groove 7 is 0.17mm, and the bottom land width is 2mm.Other steps make the sample and the mating plate of compare test with embodiment 1 identical step, and its spraying parameter and embodiment 1 are identical, do two groups of tests after, the gained bond strength is as shown in table 1.
Test gained data are as shown in table 1:
Adopt hot-spraying coating bond strength method of testing that anchoring strength of coating is tested, the V-shaped groove surface is ceramic coated, and its bond strength is 25～30Mpa; A kind of bond strength that improves the optimum embodiment of structure of trough of belt matrix and anchoring strength of coating of the present invention is 30～35MPa.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (4)
1. structure that improves trough of belt matrix and anchoring strength of coating, it is characterized in that: have the shallow trench (1) that is opened in matrix surface, described shallow trench (1) cross sectional shape is a dove-tail form.
2. the structure of raising trough of belt matrix as claimed in claim 1 and anchoring strength of coating is characterized in that: the left tilted surface (1-1) of shallow trench (1) is 10 °～16 ° with the angle α of right tilted surface (1-2).
3. the structure of raising trough of belt matrix as claimed in claim 1 and anchoring strength of coating is characterized in that: all rotation angle positions (1-3) of described shallow trench (1) are rounding.
4. the structure of raising trough of belt matrix as claimed in claim 1 and anchoring strength of coating is characterized in that: the degree of depth L of described shallow trench (1) is 0.15mm～0.2mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100688893A CN102145555A (en) | 2011-03-22 | 2011-03-22 | Structure for improving bonding strength of belt groove substrate and coating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100688893A CN102145555A (en) | 2011-03-22 | 2011-03-22 | Structure for improving bonding strength of belt groove substrate and coating |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2199337Y (en) * | 1994-10-10 | 1995-05-31 | 旅顺长城不锈钢厂 | Steel-plastics composite mechanical sealed diluted acid pump |
| US20070214952A1 (en) * | 2006-03-08 | 2007-09-20 | Gerhard Kossmann | Position measuring system for a hydraulic cylinder |
| CN201059302Y (en) * | 2007-02-09 | 2008-05-14 | 江苏武进液压启闭机有限公司 | Ceramic piston-rod of hydraulic cylinder having built-in stroke detecting apparatus |
| CN201339253Y (en) * | 2009-01-05 | 2009-11-04 | 韩东升 | Transition arc structure dovetail slot thermal insulation board |
| US20110027506A1 (en) * | 2007-11-23 | 2011-02-03 | Walter Mittelbach | Functional composite material |
| CN201970507U (en) * | 2011-03-22 | 2011-09-14 | 江苏武进液压启闭机有限公司 | Structure for improving bonding strength between belt trough substrate and coating |
-
2011
- 2011-03-22 CN CN2011100688893A patent/CN102145555A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2199337Y (en) * | 1994-10-10 | 1995-05-31 | 旅顺长城不锈钢厂 | Steel-plastics composite mechanical sealed diluted acid pump |
| US20070214952A1 (en) * | 2006-03-08 | 2007-09-20 | Gerhard Kossmann | Position measuring system for a hydraulic cylinder |
| CN201059302Y (en) * | 2007-02-09 | 2008-05-14 | 江苏武进液压启闭机有限公司 | Ceramic piston-rod of hydraulic cylinder having built-in stroke detecting apparatus |
| US20110027506A1 (en) * | 2007-11-23 | 2011-02-03 | Walter Mittelbach | Functional composite material |
| CN201339253Y (en) * | 2009-01-05 | 2009-11-04 | 韩东升 | Transition arc structure dovetail slot thermal insulation board |
| CN201970507U (en) * | 2011-03-22 | 2011-09-14 | 江苏武进液压启闭机有限公司 | Structure for improving bonding strength between belt trough substrate and coating |
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Application publication date: 20110810 |