CN111618539B - Production process of wear-resistant layer for flow passage component of cutter suction dredger - Google Patents
Production process of wear-resistant layer for flow passage component of cutter suction dredger Download PDFInfo
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- CN111618539B CN111618539B CN202010536101.6A CN202010536101A CN111618539B CN 111618539 B CN111618539 B CN 111618539B CN 202010536101 A CN202010536101 A CN 202010536101A CN 111618539 B CN111618539 B CN 111618539B
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention relates to a production process of an overflowing part wear-resistant layer for a cutter suction dredger, which comprises the following steps: s1, preparing wear-resistant blocks, S101, cutting the steel plates into a plurality of trapezoidal steel plates, and vertically cutting corners of each trapezoidal steel plate; s102, annealing the cut trapezoidal steel plate; s103, punching the center of each annealed trapezoidal steel plate, processing grooves at the periphery of the punched hole, and performing punch forming on the punched hole to obtain a hyperbolic arc steel plate; s104, sequentially quenching and tempering the steel plate with the hyperbolic radian to obtain a wear-resistant block; s2, laying the wear-resistant layers, splicing the wear-resistant blocks to form square holes at the periphery, welding the positioning holes, the square holes and the joints of the wear-resistant blocks in sequence to fix the wear-resistant blocks on the inner wall of the overflowing part of the cutter suction dredger. According to the invention, the wear-resistant layer is laid on the inner wall of the flow passage component, so that the wear resistance of the cutter suction dredger is improved, and the service life of the cutter suction dredger is prolonged.
Description
Technical Field
The invention relates to the technical field of ship dredging, in particular to a production process of a wear-resistant layer for an overflowing part of a cutter suction dredger.
Background
The cutter suction dredger is important equipment for dredging, soil or rock blocks which are high in hardness, thick in particle size and sharp in edge are easy to encounter during operation, mostly dolomite and sandstone cobblestones, and the abrasion to a dredging part of the dredger is very serious. Wear of the flow passage components not only increases replacement and maintenance costs for spare parts, but also increases downtime of the dredger. Therefore, how to improve the wear resistance and the service life of the cutter suction dredger is a difficult problem to be solved urgently in the dredging field.
Disclosure of Invention
The invention aims to solve the technical problem of providing a production process of a wear-resistant layer for an overflowing part of a cutter suction dredger, wherein the wear-resistant layer is laid on the inner wall of the overflowing part, so that the wear resistance of the cutter suction dredger is improved, and the service life of the cutter suction dredger is prolonged.
The invention provides a production process of a wear-resistant layer for an overflow component of a cutter suction dredger, which comprises the following steps:
s1, preparing a wear-resistant block, which comprises the following steps:
s101, cutting a No. 45 steel plate into a plurality of trapezoidal steel plates according to the required size, and vertically cutting each corner of each trapezoidal steel plate;
s102, annealing the cut trapezoidal steel plate;
s103, punching positioning holes in the centers of the annealed trapezoidal steel plates, machining grooves around the punched holes, and performing punch forming on the trapezoidal steel plates to obtain hyperbolic-radian steel plates;
s104, sequentially quenching and tempering the steel plate with the hyperbolic radian to obtain a wear-resistant block;
s2, laying a wear-resistant layer, wherein the laying comprises the following steps:
the wear-resistant blocks are spliced with each other to form a wear-resistant layer, square holes are formed in the periphery of the wear-resistant blocks after the wear-resistant blocks are spliced with each other, seams are formed after the wear-resistant blocks are spliced with each other, and the positioning holes, the square holes and the seams of the wear-resistant blocks are welded in sequence, so that the wear-resistant blocks are fixed on the inner wall of the overflowing part of the cutter suction dredger.
Preferably, in step S101, 45 steel having a low residual phosphorus flow is used as the 45 steel.
In any of the above schemes, preferably, in step S101, the cutting length at each corner of the trapezoidal steel plate is 80% to 90% of the thickness of the trapezoidal steel plate, and the cutting angle is 45 °.
In any of the above embodiments, preferably, in step S102, the trapezoidal steel plate is heated to 900 ℃, kept for 2 hours, and naturally cooled to room temperature.
In any of the above schemes, preferably, in step S103, the trapezoidal steel plate is pressed and formed twice by using a 260-300T press.
In any of the above embodiments, preferably, in step S104, the quenching treatment is performed to HRC 45-47 °, and the tempering treatment is performed to HRC 42-45 °.
In any of the above solutions, preferably, in step S2, welding is performed by using a J506 welding rod or a TWE711 welding wire, and the weld seam at the joint is not higher than the wear-resistant block by 3 mm.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. the quenching treatment is adopted to improve the hardness of the steel plate, the tempering treatment is adopted to reduce the generation of cracks under the condition of ensuring the hardness of the steel plate, the wear resistance of the wear-resistant block is improved, the flow passage component of the cutter suction dredger is protected, and the service life is prolonged.
2. The seam is not welded on the flow passage component during welding, so that the installation and welding engineering quantity is reduced. Meanwhile, the influence of repeated welding and cutting on the stress of the material and welding of the flow passage component can be avoided, and cracks can be avoided.
3. The wearing layer is welded and fixed on the inner wall of the overflowing part by adopting a mode of mutually splicing a plurality of wearing blocks, so that the wearing layer is of a modular structure, the corresponding positions are conveniently replaced according to the difference of the wearing degrees, the large-area replacement is not needed, the local replacement is realized, the material and ship repair time is saved, and the repair efficiency is improved.
The production process of the wear-resistant layer for the flow passage component of the cutter suction dredger according to the present invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a partial three-dimensional structure of a wear-resistant block in the production process of a wear-resistant layer for an overflow component of a cutter suction dredger according to the present invention;
FIG. 2 is a schematic plan view of a wear-resistant block in the production process of a wear-resistant layer for an overflow member of a cutter suction dredger according to the present invention;
FIG. 3 is a schematic structural view of the mutual splicing of wear-resistant blocks in the production process of the wear-resistant layer for the flow passage component of the cutter suction dredger of the present invention;
wherein: 1. a wear-resistant block; 2. positioning holes; 3. beveling; 4. a square hole; 5. and (6) seaming.
Detailed Description
As shown in fig. 1 to 3, the invention provides a production process of a wear-resistant layer for an overflow component of a cutter suction dredger, which comprises the following steps:
s1, wear resistant block 1 preparation, comprising:
s101, cutting the No. 45 steel plate into a plurality of trapezoidal steel plates according to the required size, and vertically cutting each corner of each trapezoidal steel plate. Wherein, 45 # steel that 45 steel adopted the phosphorus to flow residual value low, and the length of cutting at each corner of trapezoidal steel sheet is 80% -90% of trapezoidal steel sheet thickness, and the angle of cutting is 45.
And S102, annealing the cut trapezoidal steel plate, heating the trapezoidal steel plate to 900 ℃, keeping for 2 hours, and naturally cooling to room temperature.
S103, punching a positioning hole 2 in the center of each annealed trapezoidal steel plate, reaming the hole by adopting a drill bit of 60mm for 8mm deep by adopting the punching hole, wherein the aperture of the positioning hole 2 is 35mm, a groove 3 is machined at the periphery of the punched hole, the angle of the groove is 30 degrees, the width of the groove 3 is 15mm, and then the trapezoidal steel plate is punched by adopting a 260-300T press machine for twice forming to obtain the steel plate with the hyperbolic radian. The radian range of the long surface of the steel plate is R1000-R2000 mm and is the radian of the elbow, and the radian range of the narrow surface of the steel plate is R300-R500 mm and is the radian of the drift diameter. The trapezoidal steel plate is made into a hyperbolic curve, so that the flow resistance of the medium can be reduced, and the influence of the flow resistance on the medium in the pipeline is reduced.
Wherein, the parameters of the two punching are the same. By performing the press forming twice, the occurrence of cracks during the press forming is prevented under the condition that the press forming into a desired shape is ensured.
S104, placing the double-radian steel plates into a furnace tray, wherein the gap between every two adjacent steel plates is 50mm, and sequentially quenching and tempering the double-radian steel plates to obtain the wear-resisting block 1. Wherein, the quenching treatment is carried out until HRC 45-47 degrees, and the tempering treatment is carried out until HRC 42-45 degrees. The quenching liquid is treated by using 10% saline water, has strong hardenability, and can further improve the hardness of the middle layer of the steel plate under the condition of ensuring the surface hardness of the steel plate, thereby improving the overall hardness of the steel plate.
Wherein, the annealing treatment is convenient for the subsequent punch forming and the quenching treatment is carried out to improve the hardness of the steel plate. In the stamping process, the steel plate can generate stress, tempering treatment is properly carried out, certain stress is conveniently released, so that cracks are reduced under the condition of ensuring the hardness of the steel plate, stress is conveniently reduced in subsequent welding treatment, and the stress concentration phenomenon is avoided.
S2, laying a wear-resistant layer, wherein the laying comprises the following steps:
the wear-resistant blocks 1 are spliced with each other to form a wear-resistant layer, square holes 4 are formed in the periphery of the wear-resistant blocks 1 after the wear-resistant blocks 1 are spliced with each other, seams 5 are formed between the wear-resistant blocks 1 after the wear-resistant blocks are spliced with each other, the positioning holes 2, the square holes 4 and the seams 5 of the wear-resistant blocks 1 are welded in sequence, and the wear-resistant blocks 1 are fixed on the inner wall of the overflowing part of the cutter suction dredger.
Specifically, the positioning holes 2 and the square holes 4 are welded in sequence to position the wear-resistant blocks 1 on the flow passage component, and then the seams 5 between the adjacent wear-resistant blocks 1 are welded to fix the wear-resistant blocks 1. The seam 5 is not welded on the flow passage component during welding, so that the phenomenon that the material of the flow passage component is affected by stress due to repeated welding and cutting, and cracks are generated is avoided.
Wherein, adopt J506 welding rod or TWE711 welding wire to weld, the welding seam of seam 5 department is not higher than wear-resisting piece 3mm, avoids producing the resistance influence to the fluid.
When the wear-resistant layer is laid, the inner wall of the whole pipe body of the flow passage component can be laid, and the turning part and the branching part of the pipe body can also be only laid. During site operation, the turning part or the branching part can be detached or not, and the wall surface of the inner wall of the pipe body is cleaned smoothly. When the local gap is too large, the gas cutting and trimming can be carried out, so that the consistency of each joint 5 is ensured, the effect of the wear-resistant block 1 is not influenced, and spot welding is carried out after the grinding and the matching.
The invention has the advantages and beneficial effects that:
1. the hardness of the steel plate is improved by adopting quenching treatment, the generation of cracks is reduced by tempering treatment under the condition of ensuring the hardness of the steel plate, the wear resistance of the wear-resistant block 1 is improved, the overflowing part of the cutter suction dredger is protected, and the service life is prolonged.
2. The seam 5 is not welded on the flow passage component during welding, so that the installation and welding workload is reduced. Meanwhile, the influence of repeated welding and cutting on the stress of the material and welding of the flow passage component can be avoided, and cracks can be avoided.
3. The wearing layer is welded and fixed on the inner wall of the overflowing part by adopting the mutual splicing form of the plurality of wearing blocks 1, so that the wearing layer is of a modular structure, the corresponding positions are conveniently replaced according to the difference of the wear degrees, the large-area replacement is not needed, the local replacement is realized, the material and ship repair time is saved, and the repair efficiency is improved.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (4)
1. A production process of a wear-resistant layer for an overflowing part of a cutter suction dredger is characterized by comprising the following steps of: the method comprises the following steps:
s1, preparing a wear-resistant block, which comprises the following steps:
s101, cutting a No. 45 steel plate into a plurality of trapezoidal steel plates according to a required size, and vertically cutting each corner of each trapezoidal steel plate, wherein the cutting length of each corner of each trapezoidal steel plate is 80-90% of the thickness of each trapezoidal steel plate, and the cutting angle is 45 degrees;
s102, annealing the cut trapezoidal steel plate, heating the trapezoidal steel plate to 900 ℃, keeping the temperature for 2 hours, and naturally cooling the trapezoidal steel plate to room temperature;
s103, punching positioning holes in the centers of the annealed trapezoidal steel plates, machining grooves around the punched holes, and performing punch forming on the trapezoidal steel plates to obtain hyperbolic radian steel plates, wherein the radian range of the long surface of each steel plate is R1000-R2000 mm and is the radian of an elbow, the radian range of the narrow surface of each steel plate is R300-R500 mm and is the radian of a drift diameter;
s104, sequentially quenching and tempering the double-radian steel plate to obtain a wear-resistant block, wherein the quenching treatment is carried out until the quenching treatment reaches HRC 45-47 degrees, and the tempering treatment reaches HRC 42-45 degrees;
s2, laying a wear-resistant layer, wherein the laying comprises the following steps:
the wear-resistant blocks are spliced with each other to form a wear-resistant layer, square holes are formed in the periphery of the wear-resistant blocks after the wear-resistant blocks are spliced with each other, seams are formed between the wear-resistant blocks after the wear-resistant blocks are spliced with each other, the positioning holes, the square holes and the seams of the wear-resistant blocks are welded in sequence, and the welding seams at the seams are not higher than the wear-resistant blocks, so that the wear-resistant blocks are fixed on the inner wall of the overflowing part of the cutter suction dredger.
2. The production process of the wear-resistant layer for the flow passage component of the cutter suction dredger according to claim 1, wherein: in step S101, 45 steel with a low residual phosphorus flow is used as the 45 steel.
3. The production process of the wear-resistant layer for the flow passage component of the cutter suction dredger according to claim 1, wherein: in the step S103, a 260-300T press machine is adopted to punch the trapezoidal steel plate for two times.
4. The production process of the wear-resistant layer for the flow passage component of the cutter suction dredger according to claim 1, wherein: in step S2, welding is carried out by adopting a J506 welding rod or a TWE711 welding wire, and the welding seam at the joint is not higher than the wear-resistant block by 3 mm.
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| CN202010536101.6A CN111618539B (en) | 2020-06-12 | 2020-06-12 | Production process of wear-resistant layer for flow passage component of cutter suction dredger |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4251018A (en) * | 1979-04-06 | 1981-02-17 | Met-L-Parts, Inc. | Method of making a lined conduit section |
| US4705424A (en) * | 1985-06-13 | 1987-11-10 | Ksm Fastening Systems Inc. | Stud system for securing abrasion resistant members |
| CN101055054A (en) * | 2007-06-01 | 2007-10-17 | 北京路思达机械设备有限公司 | Concrete conveying pipe |
| CN200986080Y (en) * | 2006-03-30 | 2007-12-05 | 严宏余 | Composite wear resistant pipeline |
| CN202708470U (en) * | 2012-07-23 | 2013-01-30 | 合肥科德电力表面技术有限公司 | Composite pipeline with resistance to high temperature and wear |
| CN203270637U (en) * | 2013-05-30 | 2013-11-06 | 中联重科股份有限公司渭南分公司 | Bulldozer shovel blade assembly and bulldozer |
| CN203475504U (en) * | 2013-05-24 | 2014-03-12 | 中交天航滨海环保浚航工程有限公司 | Novel wear-resisting block for elbow pipe of dredge pipe system of cutter suction dredger |
| CN204387561U (en) * | 2014-11-28 | 2015-06-10 | 周朝辉 | A kind of internal layer is the antifriction metal (AFM) bend pipe structure of semicanal |
| CN207129606U (en) * | 2017-09-12 | 2018-03-23 | 萍乡市兴丰高科实业有限公司 | Converyor roller embedded with abrasion-resistant ceramic lining plate |
| CN210344660U (en) * | 2019-06-06 | 2020-04-17 | 江苏金鹰绝缘管业有限公司 | Wear-resistant ceramic pulverized coal pipeline elbow |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3947982A (en) * | 1973-12-10 | 1976-04-06 | Tomaso Mantovani | Structure for connecting teeth to the digging edge of a bucket |
| CN103831580A (en) * | 2012-11-21 | 2014-06-04 | 上海宝钢工业技术服务有限公司 | Method for manufacturing hard-face roller of rolling mill |
| CN205975767U (en) * | 2016-08-08 | 2017-02-22 | 中交天航滨海环保浚航工程有限公司 | Cutter suction dredger inhales discharge pipeline return bend assembly |
-
2020
- 2020-06-12 CN CN202010536101.6A patent/CN111618539B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4251018A (en) * | 1979-04-06 | 1981-02-17 | Met-L-Parts, Inc. | Method of making a lined conduit section |
| US4705424A (en) * | 1985-06-13 | 1987-11-10 | Ksm Fastening Systems Inc. | Stud system for securing abrasion resistant members |
| CN200986080Y (en) * | 2006-03-30 | 2007-12-05 | 严宏余 | Composite wear resistant pipeline |
| CN101055054A (en) * | 2007-06-01 | 2007-10-17 | 北京路思达机械设备有限公司 | Concrete conveying pipe |
| CN202708470U (en) * | 2012-07-23 | 2013-01-30 | 合肥科德电力表面技术有限公司 | Composite pipeline with resistance to high temperature and wear |
| CN203475504U (en) * | 2013-05-24 | 2014-03-12 | 中交天航滨海环保浚航工程有限公司 | Novel wear-resisting block for elbow pipe of dredge pipe system of cutter suction dredger |
| CN203270637U (en) * | 2013-05-30 | 2013-11-06 | 中联重科股份有限公司渭南分公司 | Bulldozer shovel blade assembly and bulldozer |
| CN204387561U (en) * | 2014-11-28 | 2015-06-10 | 周朝辉 | A kind of internal layer is the antifriction metal (AFM) bend pipe structure of semicanal |
| CN207129606U (en) * | 2017-09-12 | 2018-03-23 | 萍乡市兴丰高科实业有限公司 | Converyor roller embedded with abrasion-resistant ceramic lining plate |
| CN210344660U (en) * | 2019-06-06 | 2020-04-17 | 江苏金鹰绝缘管业有限公司 | Wear-resistant ceramic pulverized coal pipeline elbow |
Non-Patent Citations (1)
| Title |
|---|
| 在长距离隧道施工中可更换螺旋机耐磨块的实用性研究;衣绍彦;《施工技术》;20181231;第47卷;第1339-1342页 * |
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