CN111570014A - Roller edge wear-resistant sheet structure for roller mill and manufacturing method - Google Patents
Roller edge wear-resistant sheet structure for roller mill and manufacturing method Download PDFInfo
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- CN111570014A CN111570014A CN202010465291.7A CN202010465291A CN111570014A CN 111570014 A CN111570014 A CN 111570014A CN 202010465291 A CN202010465291 A CN 202010465291A CN 111570014 A CN111570014 A CN 111570014A
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- resistant sheet
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000003801 milling Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 46
- 230000008569 process Effects 0.000 claims abstract description 35
- 239000000956 alloy Substances 0.000 claims abstract description 31
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000005245 sintering Methods 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005219 brazing Methods 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- JPNWDVUTVSTKMV-UHFFFAOYSA-N cobalt tungsten Chemical compound [Co].[W] JPNWDVUTVSTKMV-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 30
- 230000007704 transition Effects 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 20
- 238000003754 machining Methods 0.000 claims description 16
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 7
- 238000012797 qualification Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
- B02C4/305—Wear resistant rollers
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a roller edge wear-resistant sheet structure for a roller mill and a manufacturing method thereof, and relates to the technical field of roller mills. The roller edge wear-resistant sheet structure for the roller mill and the manufacturing method thereof comprise the following steps: s1, preparing a high-wear-resistance hard wear-resistant plate by adopting tungsten cobalt powder through a sintering method, reserving a circular through hole at the lower side of the hard wear-resistant plate, and processing the plate to a required size through a grinding mode. The roller edge wear-resistant sheet structure for the roller mill and the manufacturing method thereof adopt a split manufacturing method at different action positions and forming difficulty positions, and finally adopt a copper-based high-temperature brazing process to weld together, so that the roller edge wear-resistant sheet is easier to process and manufacture, the processing cost is greatly reduced, the hard alloy sintering qualification rate is improved, and the roller edge wear-resistant sheet is easier to mount, dismount and replace at protection positions such as the roller edge side surface of the roller surface of the high-pressure roller mill.
Description
Technical Field
The invention relates to the technical field of roller mills, in particular to a roller edge wear-resistant sheet structure for a roller mill and a manufacturing method thereof.
Background
The roller surface and the roller edge of the existing high-pressure roller mill and other easily worn parts adopt structural modes such as surfacing welding, welding wear-resisting plates, embedding hard alloy blocks and the like. The structure of the surfacing and embedding wear-resisting plate needs to be resurfaced and repaired once after a period of time, so that the operation rate of equipment is influenced, and the maintenance cost is high; the hard alloy block structures are embedded on the parts such as the roller edge of the high-pressure roller mill, so that the service life of the parts such as the roller edge can reach the same service life as that of a stud roller surface, most of the existing hard alloy blocks are similar to the dovetail groove type structure, the stud pressing block and other structural forms, and the similar structures are relatively small in size, so that the size of the side surface protection surface of the roller edge of the roller surface of the roller mill is not enough, the machine body below the high-strength hard alloy block on the top of the roller edge of the roller surface is easy to wear, the hard alloy block falls off, the rolling effect and the equipment operation rate are influenced, and the; in order to increase the protective surface of the side surface of the roller surface and the roller edge, the sizes of the hard alloy blocks can be increased, but the increased hard alloy blocks are extremely difficult to sinter and form, the process requirement is high, the sintering percent of pass is low, and in the use process of the high-pressure roller mill, when the hard alloy blocks are large, the hard alloy blocks are easily damaged by abnormal external force, the operation rate of equipment is influenced, and the maintenance cost is high.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a roller edge wear-resistant sheet structure for a roller mill and a manufacturing method thereof, and solves the problems that in the prior art, easily-worn parts such as a roller edge of a roller surface of a high-pressure roller mill adopt structural modes such as surfacing, welding a wear-resistant plate, embedding a hard alloy block and the like, wherein the structure of the surfacing and embedding wear-resistant plate needs to be resurfaced and repaired once after a period of time, the operation rate of equipment is influenced, and the maintenance cost is high; the hard alloy block structures are embedded on the parts such as the roller edge of the high-pressure roller mill, so that the service life of the parts such as the roller edge can reach the same service life as that of a stud roller surface, most of the existing hard alloy blocks are similar to the dovetail groove type structure, the stud pressing block and other structural forms, and the similar structures are relatively small in size, so that the size of the side surface protection surface of the roller edge of the roller surface of the roller mill is not enough, the machine body below the high-strength hard alloy block on the top of the roller edge of the roller surface is easy to wear, the hard alloy block falls off, the rolling effect and the equipment operation rate are influenced, and the; the hard alloy blocks can be enlarged in size for increasing the protective surface of the side surface of the roller surface and the roller edge, but the enlarged hard alloy blocks are extremely difficult to sinter and form, high in process requirement and low in sintering percent of pass, and the hard alloy blocks are easily damaged by abnormal external force when being large in the use process of the high-pressure roller mill.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a roller edge wear-resistant sheet structure for a roller mill and a manufacturing method thereof comprise the following steps:
s1, preparing a high-wear-resistance hard wear-resistant plate by adopting tungsten cobalt powder through a sintering method, reserving a circular through hole at the lower side of the hard wear-resistant plate, and processing the plate to a required size through a grinding mode;
s2, the alloy steel is subjected to processes such as quenching and tempering to reach certain hardness and have good toughness, the alloy steel is machined into the shape of the alloy steel transition piece in a machining mode, a circular through hole is formed in the alloy steel transition piece, machining allowance is reserved according to the required machining shape, and the alloy steel transition piece is machined to the required size in a follow-up whole machine mode;
s3, centering the hard alloy wear-resistant sheet and the alloy steel transition sheet on the basis of the circular through hole, welding the two parts together by adopting a copper-based high-temperature brazing process, and immediately performing stress relief treatment after welding to eliminate residual stress generated in the welding process; machining to the required size;
s4, processing annular steps with different depths on the side surface of the roller surface roller edge of the roller mill according to the required structural shape, and processing a plurality of threaded holes at the position of the lower annular step;
s5, fixing the processed roller edge wear-resistant sheet on the side annular step of the roller edge of the roller surface of the roller mill by using a screw;
and S6, welding the materials obtained in the steps S1-S5 together by adopting a copper-based high-temperature brazing process, thereby forming the roll edge wear-resistant sheet for the roller mill.
(III) advantageous effects
The invention provides a roller edge wear-resistant sheet structure for a roller mill and a manufacturing method thereof. The method has the following beneficial effects: the roller edge wear-resistant sheet structure for the roller mill and the manufacturing method thereof adopt a split manufacturing method at different action positions and forming difficulty positions, and finally adopt a copper-based high-temperature brazing process to weld together, so that the roller edge wear-resistant sheet is easier to process and manufacture, the processing cost is greatly reduced, the hard alloy sintering qualification rate is improved, and the roller edge wear-resistant sheet is easier to mount, dismount and replace at protection positions such as the roller edge side surface of the roller surface of the high-pressure roller mill. When the roller edge wear-resistant sheet is abnormally stressed and damaged in the use process of the high-pressure roller mill, the screw is unscrewed, the damaged roller edge wear-resistant sheet is taken out of the roller sleeve base body, the roller edge wear-resistant sheet is replaced by a new roller edge wear-resistant sheet, and then the screw is screwed down.
Drawings
FIG. 1 is a front view of a carbide wear plate structure of the present invention;
FIG. 2 is a side view of a carbide wear plate construction of the present invention;
FIG. 3 is a front view of a steel alloy transition piece according to the present invention;
FIG. 4 is a side view of the alloy steel transition piece construction of the present invention;
FIG. 5 is a front view of the edge wear pad arrangement of the present invention;
FIG. 6 is a side view of the edge wear pad structure of the roll of the present invention;
FIG. 7 is a sectional view showing a side processing structure of a roll surface and a roll edge of a roll surface of the roll mill according to the present invention;
FIG. 8 is a front view of a roll surface and roll edge side processing structure of the roll mill of the present invention;
FIG. 9 is a front view of the roll edge wear pad assembly of the present invention;
fig. 10 is a sectional view of the roll edge wear pad assembly structure of the present invention.
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.
Referring to fig. 1-10, the present invention provides a technical solution: a roller edge wear-resistant sheet structure for a roller mill and a manufacturing method thereof comprise the following steps:
s1, preparing a high-wear-resistance hard wear-resistant plate by adopting tungsten cobalt powder through a sintering method, reserving a circular through hole at the lower side of the hard wear-resistant plate, and processing the plate to a required size through a grinding mode;
s2, the alloy steel is subjected to processes such as quenching and tempering to reach certain hardness and have good toughness, the alloy steel is machined into the shape of the alloy steel transition piece in a machining mode, a circular through hole is formed in the alloy steel transition piece, machining allowance is reserved according to the required machining shape, and the alloy steel transition piece is machined to the required size in a follow-up whole machine mode;
s3, centering the hard alloy wear-resistant sheet and the alloy steel transition sheet on the basis of the circular through hole, welding the two parts together by adopting a copper-based high-temperature brazing process, and immediately performing stress relief treatment after welding to eliminate residual stress generated in the welding process; machining to the required size;
s4, processing annular steps with different depths on the side surface of the roller surface roller edge of the roller mill according to the required structural shape, and processing a plurality of threaded holes at the position of the lower annular step;
s5, fixing the processed roller edge wear-resistant sheet on the side annular step of the roller edge of the roller surface of the roller mill by using a screw;
and S6, welding the materials obtained in the steps S1-S5 together by adopting a copper-based high-temperature brazing process, thereby forming the roll edge wear-resistant sheet for the roller mill.
The roller edge wear-resistant sheet structure for the roller mill and the manufacturing method thereof adopt a split manufacturing method at different action positions and forming difficulty positions, and finally adopt a copper-based high-temperature brazing process to weld together, so that the roller edge wear-resistant sheet is easier to process and manufacture, the processing cost is greatly reduced, the hard alloy sintering qualification rate is improved, and the roller edge wear-resistant sheet is easier to mount, dismount and replace at protection positions such as the roller edge side surface of the roller surface of the high-pressure roller mill. When the roller edge wear-resistant sheet is abnormally stressed and damaged in the use process of the high-pressure roller mill, the screw is unscrewed, the damaged roller edge wear-resistant sheet is taken out of the roller sleeve base body, the roller edge wear-resistant sheet is replaced by a new roller edge wear-resistant sheet, and then the screw is screwed down. The method for manufacturing and assembling the roller edge wear-resistant sheet mainly comprises the following steps:
the tungsten-cobalt powder is adopted to prepare a high-wear-resistance hard wear-resistant plate through a sintering method, a circular through hole is reserved on the lower side of the hard wear-resistant plate, the high-wear-resistance hard wear-resistant plate is machined to a required size through a grinding mode, and the structure of the hard wear-resistant plate is shown in attached figures 1 and 2.
The alloy steel is subjected to processes such as quenching and tempering to reach certain hardness and have good toughness, the hardness is controlled to be RC 35-40, the alloy steel is machined into the shape of a required alloy steel transition piece in a machining mode, a circular through hole is designed in the alloy steel transition piece, machining allowance is reserved according to the required machining shape, and after the alloy steel transition piece is machined to the required size in a follow-up whole machine mode, the structure of the alloy steel transition piece is shown in attached figures 3 and 4.
Centering a hard alloy wear-resistant sheet and an alloy steel transition sheet on the basis of a circular through hole, welding the two parts together by adopting a copper-based high-temperature brazing process, controlling the welding temperature to be 950-1050 ℃, immediately performing stress relief treatment after welding is finished, putting the roller edge wear-resistant sheet into a heating furnace, heating to 300-350 ℃, preserving heat for 10-12 hours, cooling to 150 ℃ in the furnace, taking out and air-cooling to eliminate residual stress generated in the welding process; and finally, machining to the required size. The roller edge wear-resistant sheet structure is shown in attached figures 5 and 6.
The side surface of the roller surface roller edge of the roller mill is provided with annular steps with different depths according to the required structural shape, a plurality of threaded holes are formed in the positions of the lower annular steps and used for fixing screws on the roller edge wear-resisting sheet, and the processing structure of the side surface of the roller surface roller edge of the roller mill is shown in attached figures 7 and 8.
The processed roll edge wear-resistant sheet is fixed on the side annular step of the roll edge of the roll surface of the roller mill by screws, the mounting screws need to be coated with medium-strength thread locking glue, and high-strength epoxy structure bonding glue is coated on the surface of the roll edge wear-resistant sheet of the roll sleeve to fill gaps of a contact surface and strengthen the overall strength of the roll edge wear-resistant sheet. The roller edge wear-resistant sheet assembly structure is shown in the attached figures 9 and 10.
In conclusion, the roller edge wear-resistant piece structure for the roller mill and the manufacturing method adopt a split manufacturing method at different action positions and difficult forming positions, and finally adopt a copper-based high-temperature brazing process to be welded together, so that the roller edge wear-resistant piece is easier to process and manufacture, the processing cost is greatly reduced, the sintering qualification rate of hard alloy is improved, and the roller edge wear-resistant piece is easier to mount, dismount and replace at protection positions such as the side surface of a roller surface of the high-pressure roller mill. When the roller edge wear-resistant sheet is abnormally stressed and damaged in the use process of the high-pressure roller mill, the screw is unscrewed, the damaged roller edge wear-resistant sheet is taken out of the roller sleeve base body, the roller edge wear-resistant sheet is replaced by a new roller edge wear-resistant sheet, and then the screw is screwed down.
According to the invention, through the innovation of the structure and the manufacturing method of the roller-edge wear-resistant sheet, the roller-edge wear-resistant sheet is easier to process and manufacture, the protective surface of the side surface of the roller mill is increased, the sintering qualification rate is improved, the embedded positions of the roller surface of the high-pressure roller mill, such as the roller edge, are easier to remove and replace the roller-edge wear-resistant sheet, and the equipment maintenance and processing cost is greatly reduced. The roller edge wear-resistant sheet is divided into two parts, wherein one part is made of high-wear-resistance hard alloy materials and is processed into the required hard alloy sheet by a sintering method; the other part is processed into the shape of the required transition piece by adopting alloy steel; and welding the hard alloy plate and the alloy steel transition plate to form a component. The wear-resistant sheet made of the high-wear-resistant hard alloy material has the characteristics of high hardness and good abrasion resistance, and can achieve the same service life as the roll surface of the hard alloy stud when being installed on the side surface of the roll edge of the roller mill and the like; the other part adopts a transition piece made of alloy steel, so that the strength and the toughness are certain, and the forming difficulty in the processing and manufacturing process of the integral hard alloy wear-resistant piece and the risk of fracture in the field use process are reduced; the roller edge wear-resistant piece structure is provided with the countersunk through holes, the roller edge wear-resistant piece manufactured through processing is fixed on the side face of the roller surface roller edge by the aid of the screws, the protection area of the side face of the roller surface roller edge of the roller mill is greatly increased, the roller edge can be effectively protected, the screws are unscrewed when the roller edge wear-resistant piece is damaged by abnormal external force, the damaged roller edge wear-resistant piece is taken out, and the new roller edge wear-resistant piece is replaced quickly. The purposes of reducing the maintenance amount of the equipment and improving the operation rate of the equipment are achieved. When the high-pressure roller mill is normally used, the structure of the roller edge wear-resistant sheet arranged on the roller surface roller edge and other positions of the high-pressure roller mill does not need maintenance, and meanwhile, when the roller edge wear-resistant sheet arranged on the roller surface roller edge side surface and other positions of the high-pressure roller mill is abnormally stressed and damaged in the use process of the high-pressure roller mill, the roller edge wear-resistant sheet is extremely easy to remove, and new roller edge wear-resistant sheets can be quickly replaced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. The utility model provides a roller limit wear pad structure and manufacturing method for roller mill which characterized in that: the method comprises the following steps:
s1, preparing a high-wear-resistance hard wear-resistant plate by adopting tungsten cobalt powder through a sintering method, reserving a circular through hole at the lower side of the hard wear-resistant plate, and processing the plate to a required size through a grinding mode;
s2, the alloy steel is subjected to processes such as quenching and tempering to reach certain hardness and have good toughness, the alloy steel is machined into the shape of the alloy steel transition piece in a machining mode, a circular through hole is formed in the alloy steel transition piece, machining allowance is reserved according to the required machining shape, and the alloy steel transition piece is machined to the required size in a follow-up whole machine mode;
s3, centering the hard alloy wear-resistant sheet and the alloy steel transition sheet on the basis of the circular through hole, welding the two parts together by adopting a copper-based high-temperature brazing process, and immediately performing stress relief treatment after welding to eliminate residual stress generated in the welding process; machining to the required size;
s4, processing annular steps with different depths on the side surface of the roller surface roller edge of the roller mill according to the required structural shape, and processing a plurality of threaded holes at the position of the lower annular step;
s5, fixing the processed roller edge wear-resistant sheet on the side annular step of the roller edge of the roller surface of the roller mill by using a screw;
and S6, welding the materials obtained in the steps S1-S5 together by adopting a copper-based high-temperature brazing process, thereby forming the roll edge wear-resistant sheet for the roller mill.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010465291.7A CN111570014A (en) | 2020-05-28 | 2020-05-28 | Roller edge wear-resistant sheet structure for roller mill and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010465291.7A CN111570014A (en) | 2020-05-28 | 2020-05-28 | Roller edge wear-resistant sheet structure for roller mill and manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113249628A (en) * | 2021-05-11 | 2021-08-13 | 江苏旭晨冶金科技有限公司 | Wear-resistant roller and manufacturing method thereof |
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2020
- 2020-05-28 CN CN202010465291.7A patent/CN111570014A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110248550A1 (en) * | 2010-04-13 | 2011-10-13 | Brook Hugh Knotts | Weld-on cast carbon steel roll crusher tooth having silver-brazed tungsten carbide inserts on wear surfaces |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113249628A (en) * | 2021-05-11 | 2021-08-13 | 江苏旭晨冶金科技有限公司 | Wear-resistant roller and manufacturing method thereof |
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Effective date of registration: 20210423 Address after: 243000 Anhui province Ma'anshan mountain rain Huo sparkle south of the road No. 9 Applicant after: Sinosteel Tianyuan Co.,Ltd. Address before: 243000 Anhui province Ma'anshan mountain rain Huo sparkle south of the road No. 9 Applicant before: Sinosteel Tianyuan Anhui Intelligent Equipment Co.,Ltd. |
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Application publication date: 20200825 |
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