CN108340634B - Crack-stopping structure realized by ultrasonic vibration rolling - Google Patents
Crack-stopping structure realized by ultrasonic vibration rolling Download PDFInfo
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- CN108340634B CN108340634B CN201810205436.2A CN201810205436A CN108340634B CN 108340634 B CN108340634 B CN 108340634B CN 201810205436 A CN201810205436 A CN 201810205436A CN 108340634 B CN108340634 B CN 108340634B
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- 238000005096 rolling process Methods 0.000 title claims abstract description 32
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 239000011159 matrix material Substances 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003094 microcapsule Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/756—Refurbishable, i.e. marks or scratches can be removed
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a crack-stopping structure realized by ultrasonic vibration rolling, which comprises a layer substrate, wherein one surface of the top and bottom of the layer substrate is provided with a crack-stopping structure, the crack-stopping structure comprises a plurality of strip-shaped bulges which are convexly arranged on the surface with the crack-stopping structure and are arranged in the same direction, and the crack-stopping structure is realized by adopting ultrasonic vibration rolling through an ultrasonic vibrator. It has the following advantages: one surface of the layer matrix is provided with a crack-stopping structure, the crack-stopping structure comprises a plurality of strip-shaped bulges which are arranged in the same direction, the crack-stopping structure can prevent (delay) the expansion of cracks in a certain specific direction, the crack-stopping structure is realized by adopting ultrasonic vibration rolling through an ultrasonic vibrator, the processing is convenient and quick, the production efficiency is high, and the reliability of the processed crack-stopping structure is high.
Description
Technical Field
The invention relates to the field of materials, in particular to a crack-stopping structure realized by ultrasonic vibration rolling.
Background
Fracture is the primary form of catastrophic failure of a component, the root cause of which is the formation and propagation of cracks from the original defects of the material (profile). The mechanisms of crack initiation and propagation can be largely divided into three categories: crack growth under cyclic loading, crack growth under high temperature creep conditions, and crack growth under stress corrosion. The sudden nature of crack failure makes it a culprit for many major accidents. Thus, a great deal of research is devoted to the prevention and repair of microcracks in components, and the current research is mainly focused on three aspects:
(1) existing crack repair aspects include forming a hard surface alloy layer by mechanical impact, thereby improving the fatigue resistance of the metal surface, as disclosed in patent CN 201610359455.1; the surface microcracks are closed by laser treatment, as disclosed in patent CN 101239432A; the pulse discharge treatment dulls the microcrack tip, reduces stress concentration and prevents crack propagation, as disclosed in patent CN105429203 a; or a composite treatment technique of three techniques, such as patent CN98125434.9, discloses a method for composite treatment of microcracks using mechanical impact and laser impact.
(2) In the aspect of development of the crack-arresting material, microcapsules are arranged in the material, and when cracks propagate to the microcapsules, substances such as repairing agents, curing agents and the like are released, as disclosed in patent CN200710029991.6, so that further propagation of the cracks is prevented; the high-temperature bonding phase is arranged in the material, when the temperature reaches a certain level, the bonding phase melts and fills the microcracks generated, so as to prevent the microcracks from further expansion, as disclosed in patent CN201310526168.1, and the method is more effective in controlling high-temperature creep failure; a crack blocking layer is arranged inside the material to control the expansion of cracks in the material, and the crack blocking layer has a self-repairing function, such as the technology disclosed in patent CN 200980113311.6.
(3) In the aspect of design of the crack-arresting parts, the local reinforcement of stress concentration parts of the components is used for limiting the generation and the expansion of cracks, as disclosed in the patent CN201510981219.9 and the patent CN 201210040846.
The existing crack-stopping materials all need to change the basic structure of the materials greatly, so that the original physical and mechanical properties (such as strength reduction, heat conduction performance reduction and the like) of the materials are affected, and the manufacturing cost of the materials is high.
Disclosure of Invention
The invention provides a crack-stopping structure realized by ultrasonic vibration rolling, which overcomes the defects of prevention and repair of microcracks in members in the background art.
One of the adopted technical schemes for solving the technical problems is as follows:
the utility model provides a crack stopper structure realized by ultrasonic vibration roll extrusion, has the layer base member, and one side contains crack stopper structure in the top and bottom two-sided of this layer base member, and this crack stopper structure includes many protruding strip archs of establishing on this face that contains crack stopper structure and syntropy arrangement, and this crack stopper structure adopts ultrasonic vibration roll extrusion realization through ultrasonic vibrator.
The plurality of strip-shaped protrusions are arranged in parallel.
The top and bottom sides of the substrate are in: the first surface is provided with the crack arrest structure, and the second surface is not provided with the crack arrest structure.
The thickness of the layer of matrix is 0.01-1 mm; the strip-shaped protrusions of the crack-stopping structure cross the length or width direction of the whole layer matrix, the distance between every two adjacent strip-shaped protrusions is 0.01-0.1 mm, and the height of each strip-shaped protrusion accounts for 50% -80% of the thickness of the layer matrix.
The strip-shaped bulge is a D-shaped strip-shaped bulge.
The D-shaped strip-shaped bulge is provided with a plane and an arc surface for connecting the plane, and the plane is fixedly connected with the layer matrix.
The ultrasonic vibrator comprises a rolling tool, an ultrasonic generator and a luffing rod, wherein the ultrasonic generator is connected with the luffing rod, the luffing rod is connected with the rolling tool, the ultrasonic generator is connected with the luffing rod and matched with the luffing rod to enable the rolling tool to generate ultrasonic vibration, and the rolling tool rolls on the surface of the layer substrate to form a crack-stopping structure.
The rolling tool is radially applied with ultrasonic vibration, the vibration frequency is 20 KHz-25 KHz, and the amplitude is 0.005-0.015 mm.
The second technical scheme adopted for solving the technical problems is as follows:
the manufacturing method of the crack-arresting profile comprising the crack-arresting structure realized by ultrasonic vibration rolling comprises the following steps:
step 1, preparing a multi-layered substrate;
step 2, forming a crack-stopping structure on a first layer of matrix by using an ultrasonic vibrator, wherein the first layer of matrix forms a previous layer of matrix;
and 3, taking another layer of substrate layer to lean against the upper layer of substrate, forming a crack-stopping structure on the other layer of substrate by using an ultrasonic vibrator, superposing and fixing the layer of substrates which are close together in the forming process, staggering strip-shaped protrusions of every two adjacent layers of substrates in the layer of substrates which are close together, forming the upper layer of substrate by using the other layer of substrate, and continuously executing the step 3 until all layers of substrates are processed.
Compared with the background technology, the technical proposal has the following advantages:
one surface of the layer matrix is provided with a crack-stopping structure, the crack-stopping structure comprises a plurality of strip-shaped bulges which are arranged in the same direction, the crack-stopping structure can prevent (delay) the expansion of cracks in a certain specific direction, the crack-stopping structure is realized by adopting ultrasonic vibration rolling through an ultrasonic vibrator, the processing is convenient and quick, the production efficiency is high, and the reliability of the processed crack-stopping structure is high.
Layer substrate top and bottom double-sided: the first surface is provided with the crack arrest structure, the second surface is not provided with the crack arrest structure, the superposition and the fixation are convenient, and the connection strength between the layers is enhanced.
The strip-shaped bulges of the crack-stopping structure are arranged in parallel, and the effect of preventing the crack from expanding in a specific direction is better.
The strip-shaped bulges are D-shaped strip-shaped bulges, so that the effect of preventing crack propagation is further improved.
The thickness of the layer matrix is 0.01-1 mm, the height of the strip-shaped protrusions accounts for 50% -80% of the thickness of the layer matrix, the strip-shaped protrusions transversely penetrate through the length or width direction of the whole layer matrix, the distance between every two adjacent strip-shaped protrusions is 0.01-0.1 mm, the strength of the layer matrix is enhanced, and the effect of preventing crack growth is further improved.
The rolling tool is radially applied with ultrasonic vibration, the vibration frequency is 20 KHz-25 KHz, the amplitude is 0.005-0.015 mm, and the processed crack-stopping structure has high reliability.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a front photograph of crack propagation after uniaxial tensile testing of a particular embodiment of a layer matrix.
FIG. 2 is a photograph of the back of a layer matrix of one embodiment after uniaxial tensile testing for crack growth.
FIG. 3 is a schematic illustration of a process for forming a crack-arrest profile by staggered, stacked and secured connection of two layer substrates according to an embodiment.
Fig. 4 is a schematic diagram of a process for forming a crack-arresting profile by overlapping and fixedly connecting two layers of matrixes in a staggered manner in another specific embodiment.
Fig. 5 is a schematic view of an ultrasonic vibrator employing an ultrasonic vibration roll forming crack stop structure.
Detailed Description
Referring to fig. 1 to 5, a crack stopper structure realized by ultrasonic vibration rolling has a layer base body 10, and the layer base body 10 has a top-bottom surface in: the first face is equipped with crack arrest structure 1, and crack arrest structure is not established to the second face, and this crack arrest structure includes many protruding strip protruding 11 of establishing on this face that contains crack arrest structure and syntropy arrangement, and strip protruding 11 straight line arrangement, and this many strip protruding 11 parallel arrangement, and this crack arrest structure adopts ultrasonic vibration rolling to realize through ultrasonic vibrator.
In a preferred embodiment: the thickness of the layer of substrate 10 is 0.01-1 mm; the strip-shaped protrusions 11 of the crack-stopping structure cross the length or width direction of the whole layer matrix 10, the distance between every two adjacent strip-shaped protrusions 11 is 0.01-0.1 mm, and the height of each strip-shaped protrusion 11 accounts for 50% -80% of the thickness of the layer matrix; the strip-shaped protrusion 11 is a D-shaped protrusion, specifically, the D-shaped protrusion 11 has a plane and an arc surface connecting the plane, and the plane is fixedly connected to the layer substrate 10.
The crack-stopping profile comprises a plurality of layers of layer matrixes 10 with crack-stopping structures, wherein the layers of layer matrixes 10 are staggered, overlapped and fixedly connected at preset angles to form a whole crack-stopping profile. According to the requirement, the stress can be eliminated by adopting a heat treatment technology after the superposition and the fixation, and the heat treatment technology comprises the following steps: quenching at 200 ℃ followed by low temperature annealing, such as annealing for 4 hours.
Fig. 1 and 2 are pictures obtained by subjecting a layer substrate in this embodiment to uniaxial tensile test to obtain crack propagation and observing the crack with a scanning electron microscope. The picture shows that the crack is on the propagation path, the crack is extended to a certain extent in the vertical direction of the propagation path, the rapid propagation of the crack is prevented, and the closing phenomenon of the crack tip is generated.
In one embodiment: the staggered angle of the strip-shaped protrusions of every two adjacent layers of the multi-layer matrix is 90 degrees, as shown in fig. 3.
In another embodiment: the staggered angle of the strip-shaped protrusions of every two adjacent layers of the multi-layer substrate is 45 degrees, as shown in fig. 4.
In this embodiment: the ultrasonic vibrator comprises a rolling tool 4, an ultrasonic generator 5 and a luffing rod 3, wherein the ultrasonic generator 5 is connected with the luffing rod 3, the luffing rod 3 is connected with the rolling tool 4, the ultrasonic generator 5 is connected with the luffing rod 3 and matched with the luffing rod 3 to enable the rolling tool 4 to generate ultrasonic vibration, and the rolling tool 4 rolls on the surface of the layer substrate to form the crack-arresting structure 1, as shown in figure 5. The rolling tool is radially applied with ultrasonic vibration, the vibration frequency is 20 KHz-25 KHz, and the amplitude is 0.005-0.015 mm. The processing method of the crack stop profile comprises the following steps: step 1, preparing a multi-layered substrate; step 2, forming a crack-stopping structure 1 on a first layer of matrix by an ultrasonic vibrator, wherein the first layer of matrix forms a previous layer of matrix; and 3, taking another layer of substrate layer to lean against the upper layer of substrate, forming a crack-stopping structure 1 on the other layer of substrate by using an ultrasonic vibrator, superposing and fixing the layer of substrates which are close together in the forming process, wherein the layer of substrates which are close together are staggered by the strip-shaped protrusions of every two adjacent layers of substrates in the layer of substrates 6, the other layer of substrate forms the upper layer of substrate, and continuing to execute the step 3 until all the layers of substrates are processed.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and therefore should not be taken as limiting the scope of the invention, for all changes and modifications that come within the meaning and range of equivalency of the claims and specification are therefore intended to be embraced therein.
Claims (5)
1. The utility model provides a crack arrest structure by ultrasonic vibration roll extrusion realizes, has a layer base member, its characterized in that: one surface of the top and bottom surfaces of the layer of substrate is provided with a crack-stopping structure, the crack-stopping structure comprises a plurality of strip-shaped bulges which are convexly arranged on the surface provided with the crack-stopping structure and are arranged in the same direction, and the crack-stopping structure is realized by adopting ultrasonic vibration rolling through an ultrasonic vibrator; the strip-shaped bulges are arranged in parallel; the top and bottom sides of the substrate are in: the first surface is provided with the crack-stopping structure, and the second surface is not provided with the crack-stopping structure; the strip-shaped bulge is a D-shaped strip-shaped bulge; the D-shaped strip-shaped bulge is provided with a plane and an arc surface for connecting the plane, and the plane is fixedly connected with the layer matrix.
2. The crack stop structure realized by ultrasonic vibration rolling according to claim 1, wherein: the thickness of the layer of matrix is 0.01-1 mm; the strip-shaped protrusions of the crack-stopping structure cross the length or width direction of the whole layer matrix, the distance between every two adjacent strip-shaped protrusions is 0.01-0.1 mm, and the height of each strip-shaped protrusion accounts for 50% -80% of the thickness of the layer matrix.
3. The crack stop structure realized by ultrasonic vibration rolling according to claim 1, wherein: the ultrasonic vibrator comprises a rolling tool, an ultrasonic generator and a luffing rod, wherein the ultrasonic generator is connected with the luffing rod, the luffing rod is connected with the rolling tool, the ultrasonic generator is connected with the luffing rod and matched with the luffing rod to enable the rolling tool to generate ultrasonic vibration, and the rolling tool rolls on the surface of the layer substrate to form a crack-stopping structure.
4. A crack stop structure realized by ultrasonic vibration rolling as claimed in claim 3, wherein: the rolling tool is radially applied with ultrasonic vibration, the vibration frequency is 20 KHz-25 KHz, and the amplitude is 0.005-0.015 mm.
5. A method of manufacturing a crack stop profile comprising a crack stop structure realized by ultrasonic vibration rolling as claimed in claim 1, characterized in that: comprising:
step 1, preparing a multi-layered substrate;
step 2, forming a crack-stopping structure on a first layer of matrix by using an ultrasonic vibrator, wherein the first layer of matrix forms a previous layer of matrix;
and 3, taking another layer of substrate layer to lean against the upper layer of substrate, forming a crack-stopping structure on the other layer of substrate by using an ultrasonic vibrator, and superposing and fixing the layer of substrates which are close together in the forming process, wherein the strip-shaped protrusions of every two adjacent layers of substrates in the layer of substrates which are close together are staggered, the other layer of substrate forms the upper layer of substrate, and continuing to execute the step 3 until all the layers of substrates are processed.
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| CN201810205436.2A CN108340634B (en) | 2018-03-13 | 2018-03-13 | Crack-stopping structure realized by ultrasonic vibration rolling |
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| CN201810205436.2A CN108340634B (en) | 2018-03-13 | 2018-03-13 | Crack-stopping structure realized by ultrasonic vibration rolling |
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| CN108340634B true CN108340634B (en) | 2024-03-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350817A (en) * | 2016-11-11 | 2017-01-25 | 青岛理工大学 | Method and device for preparing crack-free cladding layer by ultrasonic vibration-assisted laser cladding |
| CN106739193A (en) * | 2017-03-17 | 2017-05-31 | 吉林大学 | A kind of bionical high-strength light heat shock resistance composite construction |
| CN106944737A (en) * | 2017-03-28 | 2017-07-14 | 江苏大学 | Connecting rod ultrasonic wave added cracks processing method and its processing unit (plant) |
| CN208216152U (en) * | 2018-03-13 | 2018-12-11 | 华侨大学 | A kind of crack-stop structure realized by ultrasonic vibration rolling |
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2018
- 2018-03-13 CN CN201810205436.2A patent/CN108340634B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350817A (en) * | 2016-11-11 | 2017-01-25 | 青岛理工大学 | Method and device for preparing crack-free cladding layer by ultrasonic vibration-assisted laser cladding |
| CN106739193A (en) * | 2017-03-17 | 2017-05-31 | 吉林大学 | A kind of bionical high-strength light heat shock resistance composite construction |
| CN106944737A (en) * | 2017-03-28 | 2017-07-14 | 江苏大学 | Connecting rod ultrasonic wave added cracks processing method and its processing unit (plant) |
| CN208216152U (en) * | 2018-03-13 | 2018-12-11 | 华侨大学 | A kind of crack-stop structure realized by ultrasonic vibration rolling |
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