CN217717252U - Clamp tool for cavitation erosion test and cavitation erosion test device - Google Patents

Abstract

The utility model discloses a fixture attachment and cavitation erosion test device for cavitation erosion test. The anchor clamps frock includes: the device comprises a lofting platform, at least one movable clamping piece and related accessories, wherein a lofting groove is formed in the top of the lofting platform; the movable clamping piece comprises a stopping part extending into the lofting groove, the stopping part is used for stopping a sample positioned in the lofting groove, and the stopping part is adjustable relative to the position of the lofting table in the first horizontal direction. Through the position of adjustment removal fastener, make its butt portion can stabilize the sample better, and the adjustment mode is simple convenient, clamping stability is high, can guarantee in long-time cavitation erosion test process, the sample can keep its horizontality, prevents that skew, droing from appearing in the sample, has improved cavitation erosion test's accuracy, success rate and efficiency of software testing, practices thrift cost of labor and test cost effectively.

Description

Clamp tool for cavitation erosion test and cavitation erosion test device

Technical Field

The utility model belongs to the technical field of cavitation erosion test technique and specifically relates to a fixture attachment and cavitation erosion test device for cavitation erosion is experimental.

Background

GB/T6383-2009 and ASTM G32-16 standards for cavitation erosion testing of sample materials use a source of bubbles generated by vibration using the magnetostrictive method, with a cavitation head diameter of 16mm. The fixture tool is one of important cavitation erosion test parts and is mainly used for horizontally fixing a test sample. At present, fixing modes such as gluing, binding and thread interference fit are adopted, the problems that the time for placing a sample is long, the clamping stability is poor, the testing horizontality is poor and the like exist in a clamp tool in the prior art, the sample is easy to deviate and fall off in a long-time cavitation erosion test, and the testing efficiency, the success rate and the accuracy of the cavitation erosion test are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the embodiment of the utility model provides a cavitation erosion test device that is used for the experimental anchor clamps frock of cavitation erosion and includes this kind of anchor clamps frock.

The embodiment of the utility model provides an anchor clamps frock for cavitation erosion test includes: the top of the lofting platform is provided with a lofting groove; and the movable clamping piece comprises a stopping part extending into the lofting groove, the stopping part is used for stopping a sample in the lofting groove, and the stopping part is adjustable in position relative to the lofting table in the first horizontal direction.

The embodiment of the utility model provides an anchor clamps frock for cavitation erosion test is including being used for bearing, hold the sample lofting platform of sample and be used for the removal fastener that ends to the sample, it is movably setting on first horizontal direction to remove the fastener, through the position of adjustment removal fastener, make its end portion can stabilize the sample better, and the regulative mode is simple convenient, the clamping stability is high, can guarantee in long-time cavitation erosion test process, the sample can keep its horizontality, prevent that the skew from appearing in the sample, drop, the experimental accuracy of cavitation erosion has been improved, success rate and efficiency of software testing, practice thrift cost of labor and test cost effectively.

In some embodiments, the movable clamp further comprises a connecting portion for connecting to the top of the loft, the connecting portion and the loft having a plurality of connection points in the first horizontal direction. Through making to be connected in the connected point position department of difference between connecting portion and the lofting platform, can adjust the position relation between removal fastener and the lofting platform.

In some embodiments, the fixture tool further comprises a fastener, the fastener comprises a head and a screw, a threaded hole is formed in the top of the lofting table, a strip-shaped hole extending along the first horizontal direction is formed in the connecting portion, the screw penetrates through the strip-shaped hole to be in threaded connection with the threaded hole, and the head abuts against the upper surface of the connecting portion so that the movable clamping piece is connected with the lofting table. Through the position of adjustment fastener in the bar hole, can change the relative position relation between removal fastener and the lofting platform, can satisfy the test demand of the sample of multiple size, the adjustment flexibility ratio is high, and it is convenient to adjust.

In some embodiments, a plurality of strip-shaped holes parallel to each other are formed in the connecting portion, and the plurality of fasteners are in one-to-one correspondence with the plurality of strip-shaped holes.

The movable clamping piece can also realize position adjustment in other modes. For example, in other embodiments, the fixture further includes a bolt, the top of the lofting platform is provided with a threaded hole, the connecting portion is provided with a plurality of through holes spaced apart along the first horizontal direction, the plurality of through holes are alternatively opposite to the threaded hole, the bolt passes through the through holes and is in threaded connection with the threaded hole, or the top of the lofting platform is provided with a plurality of threaded holes spaced apart along the first horizontal direction, the connecting portion is provided with a plurality of through holes, the plurality of threaded holes are alternatively opposite to the through holes, and the bolt passes through the through holes and is in threaded connection with the threaded hole. It can be understood that, in the above alternative embodiment, the connection point between the movable clamping piece and the lofting table is limited by the number of the threaded holes or the through holes, and the adjustment flexibility is limited, so that the relative position between the movable clamping piece and the lofting table is preferably adjustable by adopting the matching manner of the fastener and the strip-shaped hole. In some embodiments, the connecting portion and the stopping portion are both sheet-shaped structures, and are orthogonal to each other.

In some embodiments, the moving clamping member includes a first moving clamping member and a second moving clamping member which are oppositely arranged in the first horizontal direction, the first moving clamping member has a first abutting portion, the second moving clamping member has a second abutting portion, and the first abutting portion and the second abutting portion respectively abut against two sides of the sample so as to clamp the sample. When a sample is placed in the lofting groove, the sample is located between the first abutting portion and the second abutting portion in the first horizontal direction, the position of the first moving clamping piece is adjusted to enable the first moving clamping piece to move in the direction of being close to the second moving clamping piece in the first horizontal direction, the position of the second moving clamping piece is adjusted to enable the second moving clamping piece to move in the direction of being close to the first moving clamping piece in the first horizontal direction, the first moving clamping piece and the second moving clamping piece move oppositely until the first abutting portion and the second abutting portion abut against two side faces of the sample respectively, the sample can be clamped between the first abutting portion and the second abutting portion stably, and clamping stability of the clamp tool is further improved.

In some embodiments, two opposite sample taking and placing grooves in a second horizontal direction are formed in the top of the sample placing table, and the two sample taking and placing grooves are respectively located on two sides of the sample placing groove and are open towards one side of the sample placing groove so as to be communicated with the sample placing groove. The setting in lofting groove is got and is convenient for load and unload the sample, when putting the sample in the lofting inslot or taking out the sample from the lofting groove with tweezers, gets to put a kind groove and be used for dodging tweezers, makes the sample more conveniently arrange in the lofting groove.

In some embodiments, the ratio of the depth of the loft groove to the depth of the loft groove is 1:3-1:2.

The utility model discloses on the other hand embodiment provides a cavitation erosion test device includes: the fixture tool is the fixture tool in any embodiment, and the lofting table is connected with the upper surface of the base; the cavitation head is positioned above the lofting groove and opposite to the lofting groove.

Drawings

Fig. 1 is a plan view of a cavitation erosion test apparatus according to an embodiment of the present invention.

Fig. 2 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 1.

Fig. 3 is a B-B sectional view of fig. 1.

Reference numerals:

a fixture tool 100, a cavitation test device 200, a base 210, a cavitation head 220,

A lofting platform 1, a lofting groove 11, a threaded hole 12, a lofting groove 13,

The device comprises a movable clamping piece 2, a first movable clamping piece 201, a second movable clamping piece 202, a stopping part 21, a first stopping part 211, a second stopping part 212, a connecting part 22, a first connecting part 221, a second connecting part 222, a strip-shaped hole 23, a sample 3, a fastener 4, a head part 41 and a screw rod 42.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The clamp tool 100 and the cavitation erosion test device 200 for cavitation erosion test according to the embodiment of the present invention are described below with reference to fig. 1 to 3, and the cavitation erosion test device 200 includes a base 210, the clamp tool 100, and a cavitation head 220. The fixture 100 is used for clamping and fixing the sample 3 during the cavitation test, and maintaining the horizontal performance of the sample.

The fixture tooling 100 comprises a loft table 1 and at least one movable clamp 2, the loft table 1 being attached to the upper surface of a base 210. The top of the lofting platform 1 is provided with a lofting groove 11 for accommodating and preventing the cavitation erosion sample 3, the opening of the lofting groove 11 faces upwards, and the sample 3 is loaded into the lofting groove 11 from the upper side. The cavitation head 220 is located above the loft channel 11 and opposite the loft channel 11. The movable clamping piece 2 comprises a stopping part 21 extending into the lofting groove 11, the stopping part 21 is used for stopping the sample 3 in the lofting groove 11, and the position of the stopping part 21 relative to the lofting table 1 in the first horizontal direction (as shown by an arrow in fig. 1) is adjustable, so that the stopping part 21 can be better abutted to samples 3 with different sizes and shapes, the samples 3 are more stably kept in the lofting groove 11, and the cavitation erosion test is facilitated. That is, the relative positional relationship between the abutting portion 21 of the movable clamper 2 and the sample stage 1 is adjusted so as to abut against the sample 3, thereby clamping and fixing the sample 3 by the clamp tool 100.

The embodiment of the utility model provides an anchor clamps frock for cavitation erosion test is including being used for bearing, hold the sample lofting platform of sample and be used for the removal fastener that ends to the sample, it is movably setting on first horizontal direction to remove the fastener, through the position of adjustment removal fastener, make its end portion can stabilize the sample better, and the regulative mode is simple convenient, the clamping stability is high, can guarantee in long-time cavitation erosion test process, the sample can keep its horizontality, prevent that the skew from appearing in the sample, drop, the experimental accuracy of cavitation erosion has been improved, success rate and efficiency of software testing, practice thrift cost of labor and test cost effectively.

In some embodiments, to better fit the sample, the loft slot 11 is a rectangular recess, as shown in FIG. 1. The size of the lofting groove 11 may be designed according to the size of the cavitation test sample 3.

Optionally, the lofting slot 11 has a height of 2mm to 30mm, a length of 20mm to 40mm, and a width of 20mm to 40mm.

In some embodiments, the relative position of the moving card 2 to the sample stage 1 in the first horizontal direction is adjustable, so that the relative position of the abutting portion 21 to the sample stage 1 in the first horizontal direction is adjustable. The number of the movable clamping pieces 2 can be one or more.

In the embodiment shown in fig. 1, the number of the movable clamping pieces 2 is two, and the movable clamping pieces include a first movable clamping piece 201 and a second movable clamping piece 202 which are oppositely arranged in the first horizontal direction, the first movable clamping piece 201 has a first stopping portion 211, the second movable clamping piece 202 has a second stopping portion 212, and the first stopping portion 211 and the second stopping portion 212 respectively stop against two sides of the sample 3 so as to clamp the sample 3.

When a sample 3 is placed in the lofting groove 11, the sample 3 is located between the first abutting portion 211 and the second abutting portion 212 in the first horizontal direction, the position of the first moving clamp 201 is adjusted to move in the direction in which the first moving clamp 201 approaches the second moving clamp 202 in the first horizontal direction, the position of the second moving clamp 202 is adjusted to move in the direction in which the second moving clamp 201 approaches the first horizontal direction, the first moving clamp 201 and the second moving clamp 202 move in the opposite direction until the first abutting portion 211 and the second abutting portion 212 abut against two side surfaces of the sample 3, and the sample 3 is firmly clamped between the first abutting portion 211 and the second abutting portion 212.

In other embodiments, the number of the moving clamping pieces 2 may be one, and the moving clamping pieces are adjusted to clamp the sample 3 between the stop portion 21 of the moving clamping piece 2 and one side wall surface of the lofting groove 11.

In some embodiments, as shown in fig. 1, the movable card 2 further comprises a connecting portion 22 for connecting to the top of the loft 1, the connecting portion 22 and the loft 1 have a plurality of connecting points in a first horizontal direction, and the positional relationship between the movable card 2 and the loft 1 can be adjusted by connecting the connecting portion 22 and the loft 1 at different connecting points. Make connecting portion 22 and lofting platform 1 be connected at the hookup location department of a certain department, can make the relative position between removal fastener 2 and the lofting platform 1 fixed, sample 3 can keep in lofting groove 11 more firmly to connecting portion 22 links to each other with the top of lofting platform 1, can conveniently, swiftly adjust the relation of connection between removal fastener 2 and the lofting platform 1, thereby improve cavitation erosion test's work efficiency.

The connecting portion 22 and the stopping portion 21 are both sheet-shaped structures, and they are orthogonal, that is, the plane of the connecting portion 22 is perpendicular to the plane of the stopping portion 21. The plane of the connecting part 22 is parallel to the top surface of the lofting platform 1, and one side wall surface of the lofting groove 11 of the plane of the stopping part 21 is parallel to each other. In the embodiment shown in fig. 1, the first mobile escapement 201 comprises orthogonal first stop 211 and first connection 221, and the second mobile escapement 202 comprises orthogonal first stop 212 and second connection 222. The first stopping portion 211 and the second stopping portion 212 are parallel to each other.

Alternatively, the connection between the connecting portion 22 and the lofting station 1 may be a detachable connection, for example, by bolting, snapping, etc. in any way that would occur to one skilled in the art.

By way of example, in the embodiment shown in fig. 1, the clamp tooling 100 further comprises a fastener 4, the fastener 4 comprising a head 41 and a threaded rod 42, the top of the threaded rod 42 being connected to the bottom of the head 41. The top of lofting platform 1 is equipped with screw hole 12 with the screw rod 42 screw-thread fit of fastener 4, offers the bar hole 23 that extends along first horizontal direction on the connecting portion 22, and screw rod 42 passes bar hole 23 and screw hole 12 threaded connection, and head 41 offsets with connecting portion 22 upper surface to make removal card 2 and lofting platform 1 link to each other.

By adjusting the position of the fastener 4 in the strip-shaped hole 23, the relative positional relationship between the moving card 2 and the lofting table 1 can be changed. When the position of the movable clamping piece 2 needs to be adjusted, the fastening piece 4 is unscrewed to separate the head 41 from the connecting part 22, the movable clamping piece 2 is manually adjusted to stop the abutting part 21 from the sample 3, the fastening piece 4 is screwed to abut the head 41 against the connecting part 22, the movable clamping piece 2 and the sample placing table 1 are mutually fixed, and the sample 3 is clamped by the movable clamping piece 2.

The connecting portion 22 may have a plurality of strip-shaped holes 23 parallel to each other, the fastening members 4 are a plurality of, and the plurality of fastening members 4 correspond to the plurality of strip-shaped holes 23 one by one. In the embodiment shown in fig. 1, two strip-shaped holes 23 parallel to each other are formed in each of the first connecting portion 221 and the second connecting portion 222, four fastening members 4 are provided, and the four fastening members 4 respectively penetrate through the corresponding strip-shaped holes 23 to be connected to the top of the lofting table 1.

Of course, in other embodiments, the movable card 2 may be adjustable in position in other ways. For example, in some alternative embodiments, the fixture 100 includes a bolt, the top of the lofting platform 1 is provided with a threaded hole, the connecting portion 22 is provided with a plurality of through holes spaced along the first horizontal direction, the plurality of through holes are alternatively opposite to the threaded hole, the bolt passes through the through holes to be in threaded connection with the threaded hole, and the bolt passes through different through holes to be connected with the threaded hole, so that the relative position between the movable clamping member 2 and the lofting platform 1 can be adjusted. Or, the top of the lofting table 1 is provided with a plurality of threaded holes arranged at intervals along the first horizontal direction, the connecting portion 22 is provided with a through hole, the plurality of threaded holes are alternatively opposite to the through hole, and the bolt penetrates through the through hole to be in threaded connection with different threaded holes, so that the relative position between the movable clamping piece 2 and the lofting table 1 can be adjusted.

It can be understood that, in the above alternative embodiment, the connection point between the movable clamping member 2 and the lofting platform 1 is limited by the number of the threaded holes or the through holes, and the adjustment flexibility is limited, so that the mode in fig. 1 to 3 is preferably adopted to make the relative position between the movable clamping member 2 and the lofting platform 1 adjustable, the adjustment flexibility is higher, the adjustment is more convenient, and the adjustment can be better adapted to the sample 3.

In some embodiments, as shown in fig. 1, the top of the lofting platform 1 is provided with two opposite lofting slots 13 in a second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, the two lofting slots 13 are respectively located at two sides of the lofting slot 11, and one side of the two lofting slots 13 facing the lofting slot 11 is open to communicate with the lofting slot 11. The sample taking and placing groove 13 is convenient for loading and unloading the sample 3, and when the sample 3 is placed in the sample placing groove 11 by tweezers or the sample 3 is taken out from the sample placing groove 11, the sample taking and placing groove 13 is used for avoiding the tweezers, so that the sample 3 can be more conveniently placed in the sample placing groove 11. The lofting groove 13 may be a square hole or an arc hole.

Optionally, the ratio of the depth of the sample placing and placing groove 13 to the depth of the sample placing groove 11 is 1:3-1:2. The width of the lofting groove 13 in the second horizontal direction is less than or equal to 1/3 of the wall thickness of the lofting groove 11, and the wall thickness of the lofting groove 11 is greater than or equal to 10mm, so that the strength of the clamp tool 100 is ensured.

The embodiment of the utility model provides a stainless steel that each part material of fixture attachment 100 can select alloy, pottery, polymer etc. and preferred intensity is high and difficult corrosion under the water environment.

In one embodiment, the components of the fixture assembly 100 are made of stainless steel and are connected by screws. The height of the lofting groove 111 is 10mm, and the length and the width are both 20mm; the thinnest department of lofting groove 111 cell wall is 10mm, and the groove 13 of taking and laying out is the quad slit, and the groove 13 size of taking and laying out is 3mm 2mm, and degree of depth 4mm, and 2 thickness of removal fastener are 1mm, and connecting portion 22 size is 25mm 19mm, and the length of bar hole 23 is 20mm, and the width is 3mm. The size of the abutting part 21 is 19mm × 9mm. The dimensions of the sample station 1 and the base 210 are reasonably determined according to the size of the water tank.

In another embodiment, the lofting slot 111 has a height of 20mm, and a length and width of 25mm; the thinnest part of the groove wall of the lofting groove 111 is 10mm, the lofting groove 13 is an arc-shaped hole, namely, the groove wall of the lofting groove 13 is an arc surface, the projection of the arc surface on the horizontal plane is arc-shaped, the central angle of the arc surface is 60 degrees, the curvature is 1, and the depth is 7mm. The thickness of the movable clamping piece 2 is 1mm, the size of the connecting part 22 is 30mm multiplied by 24mm, the length of the strip-shaped hole 23 is 25mm, and the width is 3mm. The size of the stop part 21 is 24mm 15mm. The dimensions of the sample station 1 and the base 210 are determined reasonably according to the size of the water tank.

The utility model provides an anchor clamps frock 100 is through setting up removal fastener 2, can satisfy the test demand of the sample 3 of multiple size, and removes the fixed test surface that can make sample 3 of fastener 2 and lofting groove 11 cooperation and keep the level. In addition, the design of the sample taking and placing groove 13 is convenient for the loading and unloading of samples, and the use convenience, stability and reliability of the clamp are effectively improved, so that the test efficiency and the data accuracy are improved, and the test cost is reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.

Claims (10)

1. The utility model provides a fixture attachment for cavitation erosion test which characterized in that includes:

the top of the lofting table is provided with a lofting groove; and

the movable clamping piece comprises a stopping part extending into the lofting groove, the stopping part is used for stopping a sample in the lofting groove, and the stopping part is adjustable in position relative to the lofting table in the first horizontal direction.

2. The fixture tool for the cavitation test according to claim 1, wherein the movable clamping piece further comprises a connecting portion for connecting with the top of the lofting table, and the connecting portion and the lofting table have a plurality of connecting points in the first horizontal direction.

3. The fixture tool for cavitation erosion test according to claim 2, characterized in that,

the improved lofting table is characterized by further comprising a fastener, the fastener comprises a head and a screw rod, a threaded hole is formed in the top of the lofting table, an edge is formed in the connecting portion, a strip-shaped hole extending in the first horizontal direction is formed in the connecting portion, the screw rod penetrates through the strip-shaped hole and is in threaded connection with the threaded hole, and the head abuts against the upper surface of the connecting portion so that the movable clamping piece is connected with the lofting table.

4. The clamp tooling for cavitation erosion test according to claim 3,

the connecting part is provided with a plurality of strip-shaped holes which are parallel to each other, and the fasteners are a plurality of and correspond to the strip-shaped holes one to one.

5. The clamp tooling for cavitation erosion test according to claim 2, further comprising a bolt,

the top of the lofting platform is provided with a threaded hole, the connecting part is provided with a plurality of through holes which are arranged at intervals along the first horizontal direction, the through holes are alternatively opposite to the threaded hole, the bolt passes through the through holes and is in threaded connection with the threaded hole,

or, the top of the lofting table is provided with a plurality of threaded holes arranged at intervals in the first horizontal direction, the connecting part is provided with a through hole, the threaded holes are alternatively opposite to the through hole, and the bolt penetrates through the through hole and is in threaded connection with the threaded holes.

6. The clamp tooling for cavitation erosion test according to claim 2,

the connecting part and the stopping part are both of sheet structures and are orthogonal.

7. A clamp tooling for cavitation erosion test according to any one of claims 1-6,

the movable clamping piece comprises a first movable clamping piece and a second movable clamping piece which are oppositely arranged in the first horizontal direction, the first movable clamping piece is provided with a first abutting portion, the second movable clamping piece is provided with a second abutting portion, and the first abutting portion and the second abutting portion are respectively abutted against two sides of the sample so as to clamp the sample.

8. The clamp tooling for cavitation erosion test according to claim 1,

the top of lofting platform is equipped with two and gets the lofting groove relative on the second horizontal direction, two it is located respectively to get the lofting groove the both sides of lofting groove and orientation one side of lofting groove all open with the lofting groove link up.

9. The fixture tool for cavitation erosion test according to claim 8,

the ratio of the depth of the lofting groove to the depth of the lofting groove is 1:3-1:2.

10. A cavitation test apparatus, comprising:

a base seat, a plurality of fixing holes and a plurality of fixing holes,

the fixture tool according to any one of claims 1 to 9, wherein the lofting table is connected with the upper surface of the base;

a cavitation head located above and opposite the lofting slot.

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