CN106885749B - Tank type erosion wear test device and method - Google Patents
Tank type erosion wear test device and method Download PDFInfo
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- CN106885749B CN106885749B CN201710153567.6A CN201710153567A CN106885749B CN 106885749 B CN106885749 B CN 106885749B CN 201710153567 A CN201710153567 A CN 201710153567A CN 106885749 B CN106885749 B CN 106885749B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
Abstract
The invention belongs to the technical field of wear test devices, and particularly relates to a tank type erosion wear test device and a tank type erosion wear test method, wherein the tank type erosion wear test device comprises a support and a sample clamp, a rotatable hollow roller is arranged on the support, a sealing cover is arranged on the hollow roller, a through hole is formed in the hollow roller or the sealing cover, the sample clamp is arranged in the hollow roller and connected with the support, the sample clamp is static when the hollow roller rotates, and blades are arranged on the inner wall of the hollow roller; the type of the slurry abrasive, the pH value of the slurry, the erosion linear velocity and the erosion angle of the sample can be adjusted, and the method is suitable for researching the performance of the wear-resistant material; the position of the sample clamped in the hollow roller can be adjusted through the displacement device, the size of the sample is not strictly required, and the test of the erosion wear performance of the sample at different positions is realized; the erosion angle can be adjusted within the range of 0-90 degrees by adjusting the sample clamp.
Description
Technical Field
The invention belongs to the technical field of wear test devices, and particularly relates to a tank type erosion wear test device and a tank type erosion wear test method.
Background
The wear performance of materials is a concern to researchers. On one hand, abrasion is the main form of part failure, especially in the fields of metallurgy, mines, engineering machinery, electric power, coal, petroleum and the like; on the other hand, the economic loss caused by abrasion is huge, and the metal abrasion-resistant material consumed in China is more than 300 million tons and nearly 150 billion dollars each year, wherein the abrasion of the abrasive material accounts for more than 50%. Therefore, it is necessary to develop and research a new erosion wear apparatus.
The classification modes of the erosion wear test device are many, and common classification modes include a jet flow type, a vacuum falling type and a tank type. The pot-type test device is simple in structure and has a plurality of advantages, and is mainly used for erosion and wear tests of wear-resistant materials. The first tank type erosion wear test device is developed by a Stauffer, and the structure principle is as follows: the rotating arm is driven by a motor and vertically arranged in the tank body, and the sample is connected with the rotating arm through a clamp. When the device works, slurry in the tank body collides with a sample to cause erosion and abrasion. Today, the pot-type erosive wear test apparatus is greatly improved in structure and function. Such as: the application number is 201410188418.X, and the name is Chinese invention of a rotary cavitation erosion and erosive wear synergistic effect test device; the invention is a Chinese patent with the application number of 201510221035.2 and named as an erosion abrasion test device with controllable erosion angle and concentration. But still have the following disadvantages:
1. one of the most significant problems affecting can-type erosion wear test devices is the eddy current phenomenon, which makes the erosion rate and the erosion angle uncontrollable. Therefore, how to avoid the influence of the slurry vortex on the test result is a problem which must be solved at present.
2. The erosion angle is an important factor influencing the wear-resisting property of the wear-resisting material, and the adjustment and control of the erosion angle by the current domestic tank type erosion wear test device are mostly realized by replacing different sample discs or clamps, so that the tank type erosion wear test device is inconvenient to use in practice, has a limited angle adjustment range and greatly influences the use range of the tank type erosion wear test device.
3. The tank type erosion abrasion device has the defect that the concentration of slurry is not uniform at a low rotating speed and a high concentration.
4. Most of the existing tank type erosion and wear test devices are eroded by mud bodies when samples rotate, most of the existing tank type erosion and wear test devices are fixed by wear-resistant materials and eroded by flowing mud (such as a lining in a pump and a lining of a swirler) when the existing tank type erosion and wear test devices work, the existing tank type erosion and wear test devices cannot be simulated well, and the erosion and wear performance of the wear-resistant materials is not researched.
Disclosure of Invention
Aiming at the technical problems, the invention provides a pot-type erosion wear test device and a pot-type erosion wear test method, wherein the device can effectively reduce the generation of eddy current and can more accurately control the erosion speed and the erosion angle; the phenomenon of uneven slurry concentration is avoided when the rotating speed is low and the concentration is high; the erosion wear performance of the test sample in the actual working state is better detected.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a tank-type erosion wear test device, includes that support and sample press from both sides, be equipped with rotatable cavity cylinder on the support, be equipped with sealed lid on the cavity cylinder, be equipped with the through-hole on cavity cylinder or the sealed lid, the sample presss from both sides the setting in the inside of cavity cylinder and couples with the support, when the cavity cylinder rotates, the sample presss from both sides the motionless, be equipped with the blade on the inner wall of cavity cylinder.
The sample clamp is connected with the support through a displacement device, the displacement device is located inside the hollow roller, and the displacement device is used for achieving up-down movement of the sample clamp.
The displacement device is connected with the support in a sliding mode and drives the sample clamp to move left and right when sliding.
The displacement device comprises a cross beam and a lower pull rod, the lower end of the lower pull rod is connected with the sample clamp, the lower pull rod is connected with the cross beam in a sliding mode and used for achieving the up-and-down movement of the sample clamp, and the cross beam is connected with the support in a sliding mode and used for achieving the left-and-right movement of the sample clamp.
The lower pull rod is a rack, a gear matched with the rack is arranged on the cross beam, and the lower pull rod can move up and down through the rotation of the gear.
The sample clamp comprises a fixed block, a hinged block, a sliding block and a connecting rod, wherein the fixed block is used for fixing a sample, the fixed block is hinged to the hinged block, two ends of the connecting rod are hinged to the fixed block and the sliding block respectively, the sliding block is connected with the fixed block or the hinged block in a sliding mode, and the hinged block is connected with the support.
The hollow roller is rotated by a motor.
The hollow drum is cylindrical.
A pot-type erosion and wear test method comprises injecting slurry into a hollow roller, fixing a sample on a sample clamp in the hollow roller, and extending the sample into the slurry; rotating the hollow roller, and when the hollow roller rotates, the sample clamp and the sample arranged in the hollow roller are static; the slurry erodes the sample on the sample clamp under the dual actions of the stirring of the blades and the rotation of the hollow roller.
The depth to which the sample protrudes into the slurry can be adjusted.
Compared with the prior art, the invention has the following beneficial effects:
hollow cylinder accessible motor realizes rotating, and the motor passes through the belt and transmits rotational speed and moment of torsion to the rotation axis to drive hollow cylinder and rotate, blade stirring mud erosion sample, because mud body stirs and hollow cylinder pivoted dual function down at the blade, the homogeneity of ground paste concentration has been very big improvement for current equipment, avoids the emergence of the inhomogeneous phenomenon of ground paste concentration when "low rotational speed high concentration". Meanwhile, the slurry in the erosion abrasion test is not easy to generate vortex, and the erosion speed and the erosion angle can be more accurately controlled.
When the hollow roller rotates, the sample clamp is still and accords with the actual working state of the wear-resistant material, so that the erosion and wear performance of the test sample in the actual working state is better, and the accuracy of the detection data is improved.
The slurry abrasive type, the slurry pH value, the erosion linear velocity and the erosion angle of the sample can be adjusted, and the method is suitable for researching the performance of the wear-resistant material. Through the displacement device, the position of the sample clamped in the hollow roller can be adjusted, the size of the sample is not strictly required, and the test of the erosion wear performance of the sample at different positions is realized. The erosion angle can be adjusted within the range of 0-90 degrees by adjusting the sample clamp.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a side view of a sample holder of the present invention;
FIG. 4 is a front view of a sample holder of the present invention;
wherein: the device comprises a support 1, a sample clamp 2, a hollow roller 3, a sealing cover 4, a blade 5, a cross beam 6, a lower pull rod 7, a gear 8, a fixing block 9, a hinge block 10, a sliding block 11, a connecting rod 12, a motor 13, a sample 14, a C surface 15, a rotating shaft 16 and a bearing 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in FIGS. 1-2: the utility model provides a tank-type erosion wear test device, includes that support 1 and sample press from both sides 2, are equipped with rotatable hollow cylinder 3 on the support 1, and sample presss from both sides 2 and sets up in hollow cylinder 3's inside and couples with support 1, is equipped with sealed lid 4 on the hollow cylinder 3, can take out sample 14 on the sample presss from both sides 2 through opening sealed lid 4, is equipped with blade 5 on the inner wall of hollow cylinder 3. The blades 5 are at least two and are evenly distributed on the inner wall of the hollow roller 3.
The motor 13 transmits the rotating speed and the torque to the hollow roller 3 through a belt and a belt wheel, the hollow roller 3 is connected with the belt wheel, the motor 13 rotates the belt wheel through the belt to drive the hollow roller 3 to rotate, the hollow roller 3 is provided with a rotating shaft 16 and a bearing 17, and the bearing 17 is fixed on the rotating shaft 16 and connected with the bracket 1. Besides the belt transmission mechanism, a gear transmission mechanism, a chain transmission mechanism and other transmission mechanisms can be adopted. Of course, an engine or other power member may be used instead of the motor 13.
The hollow roller 3 is provided with a sealing cover 4 which can be opened, and the sealing cover 4 can be hinged, screwed or connected with the hollow roller 3 in other detachable modes.
The sample holder 2 with the fixed sample 14 can be placed in the hollow drum 3 by opening the sealing cover 4; the sample clamp 2 is connected with a displacement device, the displacement device comprises a cross beam 6 and a lower pull rod 7, the lower end of the lower pull rod 7 is connected with the sample clamp 2, the lower pull rod 7 is connected with the cross beam 6 in a sliding mode, and the cross beam 6 is connected with the support 1 in a sliding mode. Through holes can be provided in the hollow cylinder 3 or the sealing cover 4 to extend the cross beam 6 outside the hollow cylinder 3 or to extend the support 1 inside the hollow cylinder 3.
The displacement device is used for realizing the movement of the up-down and left-right positions of the sample clamp 2, the lower pull rod 7 is connected with the cross beam 6 in a sliding manner, and the lower pull rod 7 is pulled to realize the up-down movement of the sample clamp 2; because the depth of the sample 14 in the slurry can be changed by adjusting the relative position relationship between the lower pull rod 7 and the cross beam 6, the size of the sample 14 is not strictly required; can make pull-down rod 7 not stretch into mud through adjusting, avoid the wearing and tearing of pull-down rod 7, improve equipment's whole life.
The lower pull rod 7 can be a rack, the cross beam 6 is provided with a gear 8 matched with the rack, and the relative position relation between the lower pull rod 7 and the cross beam 6 can be conveniently adjusted through the rotation of the gear 8.
The displacement device is in sliding connection with the support 1, namely the cross beam 6 is in sliding connection with the support 1, so that the sample clamp 2 moves left and right, and the erosion wear performance of the sample 14 at different positions in the hollow roller 3 can be tested. When it is desired to remove the sample 14, the sealing lid 4 can be opened, the cross beam 6 pulled to remove the sample holder 2 from the hollow drum 3, and then the sample 14 can be removed. The method of clamping the specimen 14 is the reverse of the method of removing the specimen 14.
Of course, the displacement device can be omitted, and the bracket 1 penetrates through the hollow roller 3 or the through hole arranged on the sealing cover 4 and extends into the hollow roller 3 to be directly connected with the sample clamp 2.
As shown in fig. 3-4, the sample clamp 2 comprises a fixing block 9, a hinge block 10, a sliding block 11 and a connecting rod 12, wherein the fixing block 9 is provided with a fixing bolt and a groove, a sample 14 is placed in the groove of the fixing block 9, and the fixing bolt is screwed so as to extrude the sample 14 to achieve the purpose of fixing. When the displacement device is provided, the hinge block 10 is connected with the lower pull rod 7 in the displacement device; when the displacement device is omitted, the hinge block 10 is directly coupled to the bracket 1.
The fixed block 9 is hinged with the hinge block 10, two ends of the connecting rod 12 are respectively hinged with the fixed block 9 and the sliding block 11, and the sliding block 11 is connected with the fixed block 9 or the hinge block 10 in a sliding manner; when the erosion angle needs to be adjusted, the included angle between the fixed block 9 and the hinge block 10 can be adjusted, and then the included angle between the fixed block and the hinge block is fixed through the connecting rod 12 and the sliding block 11, so that the erosion angle of the sample 14 is changed.
Of course, other clamping mechanisms may be used for the sample holder 2, as long as the sample 14 can be fixed.
When in specific use:
the sample 14 is processed into a cuboid (the specific size can be determined according to the sample clamp 2) by warp cutting, the sample 14 is soaked in absolute alcohol and cleaned for 10-15min by an ultrasonic cleaner before the test, and the sample is weighed and data is recorded by a precision electronic scale after being dried. Cleaning the tank body and drying; fixing a sample 14 on a sample clamp 2, adjusting the positions of a slide block 11 and a fixed block 9 or a hinged block 10 according to requirements to adjust the erosion angle, screwing the hinged block 10 into a nut of a lower pull rod 7, ensuring that a C surface 15 of the sample 14 is vertical to the side surface of a hollow roller 3 at the moment, adjusting the position of the sample 14 in slurry by a rotating gear 8, adding water and aggregate according to a proportion, and adjusting and setting a pH value (generally adding acidic or alkaline solution into the slurry). The slurry body generally consists of water and abrasive materials, wherein the abrasive materials can be silicon dioxide, aluminum oxide, silicon carbide, glass balls and the like, and are selected according to requirements during actual tests. The beam 6 is moved to feed the sample holder 2 into the hollow drum 3, and the sealing cover 4 is covered. Starting the motor 13, adjusting the rotation speed and recording the time. After the test is completed, the sample 14 is discharged; cleaning with ultrasonic cleaner for 10-15min, and blow-drying; and weighing by using the precise electronic scale again, wherein the difference between the weights of the sample 14 at the front and the back is the erosive wear amount of the wear-resistant material, and further calculating the erosive wear rate of the wear-resistant material according to a formula to research the wear-resistant characteristic of the material. Meanwhile, experimental parameters can be readjusted, and the influences of different abrasives, slurry temperature, pH value, erosion linear velocity and erosion filling angle on the wear-resistant material are measured. The abrasive is not suitable for repeated use because of the crushing and passivation phenomena of the abrasive in the test process.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (5)
1. The utility model provides a pot-type erosion wear test device which characterized in that: the device comprises a support (1) and a sample clamp (2), wherein a rotatable hollow roller (3) is arranged on the support (1), a sealing cover (4) is arranged on the hollow roller (3), a through hole is formed in the hollow roller (3) or the sealing cover (4), the sample clamp (2) is arranged inside the hollow roller (3) and connected with the support (1), the sample clamp (2) is static when the hollow roller (3) rotates, and blades (5) are arranged on the inner wall of the hollow roller (3); the sample clamp (2) is connected with the bracket (1) through a displacement device, the displacement device is positioned in the hollow roller (3), and the displacement device is used for realizing the up-and-down movement of the sample clamp (2); the displacement device is connected with the bracket (1) in a sliding manner, and drives the sample clamp (2) to move left and right when sliding; the displacement device comprises a cross beam (6) and a lower pull rod (7), the lower end of the lower pull rod (7) is connected with the sample clamp (2), the lower pull rod (7) is connected with the cross beam (6) in a sliding mode and used for achieving up-down movement of the sample clamp (2), and the cross beam (6) is connected with the support (1) in a sliding mode and used for achieving left-right movement of the sample clamp (2).
2. The can-type erosive wear test apparatus according to claim 1, characterized in that: the lower pull rod (7) is a rack, a gear (8) matched with the rack is arranged on the cross beam (6), and the lower pull rod (7) can move up and down through the rotation of the gear (8).
3. The can-type erosive wear test apparatus according to claim 1, characterized in that: sample clamp (2) are including fixed block (9), articulated piece (10), slider (11) and connecting rod (12), fixed block (9) are used for fixed sample (14), fixed block (9) are articulated with articulated piece (10), connecting rod (12) both ends are articulated with fixed block (9) and slider (11) respectively, slider (11) and fixed block (9) or articulated piece (10) sliding connection, articulated piece (10) are hookup with support (1).
4. The can-type erosive wear test apparatus according to claim 1, characterized in that: the hollow roller (3) is rotated by a motor (13).
5. The can-type erosive wear test apparatus according to claim 1, characterized in that: the hollow roller (3) is cylindrical.
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| CN201710153567.6A CN106885749B (en) | 2017-03-15 | 2017-03-15 | Tank type erosion wear test device and method |
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| CN201710153567.6A CN106885749B (en) | 2017-03-15 | 2017-03-15 | Tank type erosion wear test device and method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107462484A (en) * | 2017-07-21 | 2017-12-12 | 首钢集团有限公司 | Slurry transportation pipeline erosion abrasion test device and measuring method |
| CN107813229B (en) * | 2017-10-18 | 2018-09-25 | 中国石油大学(北京) | System and method for is tested in recyclable abradant jet erosion |
| CN109030268B (en) * | 2018-09-07 | 2024-03-12 | 山东大学 | Adjustable gas-solid two-phase flow erosive wear testing mechanism |
| CN110487714A (en) * | 2019-09-09 | 2019-11-22 | 西南交通大学 | A kind of debris flow gully bed coefficient of friction and abrasion coefficient testing device and test method |
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| CN103471945A (en) * | 2012-06-06 | 2013-12-25 | 张大鹏 | Cylinder type hydraulic impact abrasion measuring apparatus |
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| CN204575477U (en) * | 2015-04-27 | 2015-08-19 | 东莞市恒宇仪器有限公司 | Abrasion instrument |
| CN205157348U (en) * | 2015-10-26 | 2016-04-13 | 马鞍山市益丰实业集团有限公司 | Cast ball shock resistance testing machine |
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Patent Citations (5)
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| JP3924599B2 (en) * | 2004-03-30 | 2007-06-06 | 独立行政法人農業・食品産業技術総合研究機構 | Wear test apparatus and method |
| CN103471945A (en) * | 2012-06-06 | 2013-12-25 | 张大鹏 | Cylinder type hydraulic impact abrasion measuring apparatus |
| CN203869979U (en) * | 2014-06-04 | 2014-10-08 | 浙江海洋学院 | Rotary erosive wear testing device |
| CN204575477U (en) * | 2015-04-27 | 2015-08-19 | 东莞市恒宇仪器有限公司 | Abrasion instrument |
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Effective date of registration: 20221116 Address after: 030600 North of No. 7 Road of Huitong Industrial Park, Jinzhong Development Zone, Jinzhong Comprehensive Reform Demonstration Zone, Shanxi Province Patentee after: SINOSTEEL STAINLESS STEEL PIPE TECHNOLOGY SHANXI CO.,LTD. Address before: 030024 No. 66 tile Road, Wan Berlin District, Shanxi, Taiyuan Patentee before: TAIYUAN University OF SCIENCE AND TECHNOLOGY |
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Address after: 030600 North of No. 7 Road of Huitong Industrial Park, Jinzhong Development Zone, Jinzhong Comprehensive Reform Demonstration Zone, Shanxi Province Patentee after: Zhonggang Stainless Steel Pipe Industry Technology Shanxi Co.,Ltd. Address before: 030600 North of No. 7 Road of Huitong Industrial Park, Jinzhong Development Zone, Jinzhong Comprehensive Reform Demonstration Zone, Shanxi Province Patentee before: SINOSTEEL STAINLESS STEEL PIPE TECHNOLOGY SHANXI CO.,LTD. |
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