CN114535852A - Pre-protection method for combined feeder of lattice type ball mill - Google Patents
Pre-protection method for combined feeder of lattice type ball mill Download PDFInfo
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- CN114535852A CN114535852A CN202210302256.2A CN202210302256A CN114535852A CN 114535852 A CN114535852 A CN 114535852A CN 202210302256 A CN202210302256 A CN 202210302256A CN 114535852 A CN114535852 A CN 114535852A
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- Prior art keywords
- feeder
- combined
- chromium alloy
- plate
- wear
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910000599 Cr alloy Inorganic materials 0.000 claims abstract description 47
- 239000000788 chromium alloy Substances 0.000 claims abstract description 47
- 238000003466 welding Methods 0.000 claims abstract description 40
- 239000011248 coating agent Substances 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 241000124804 Sphyrna media Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention provides a pre-protection method for a grate type ball mill combined feeder, which comprises the following steps: polishing and derusting a part A of the inner wall of the body of the combined feeding device; rolling a high-chromium alloy wear-resisting plate into a first high-chromium alloy overlaying plate matched with the part A; welding and fixing a first high-chromium alloy overlaying plate on the part A; rolling a high-chromium alloy wear-resisting plate into a second high-chromium alloy overlaying plate matched with B on two sides of an arc which is easy to abrade and leak from the body of the combined ore feeder; welding and fixing a second high-chromium alloy overlaying plate on the part B; and after welding, coating high-molecular wear-resistant coating materials on all welding seams and the exposed parts of the inner wall of the body of the combined feeder for protection. The combined ore feeder pre-protection method of the lattice type ball mill can prolong the service cycle of the body of the combined ore feeder and lead the body of the combined ore feeder to be synchronous with the cycle of the scoop and the feeding cover, thereby improving the efficiency, reducing the downtime caused by the abrasion of the body of the combined ore feeder and improving the comprehensive benefit.
Description
Technical Field
The invention relates to the technical field of pre-protection of a grate-type ball mill combined feeder, in particular to a pre-protection method of a grate-type ball mill combined feeder.
Background
The combined feeder is a main accessory part of a ball mill of a mine enterprise and mainly comprises a feeding cover, a combined feeder body, a scoop and a scoop head, wherein the combined feeder body is greatly impacted by a steel ball, so that the abrasion is obviously larger than that of the feeding cover and the scoop, and the combined feeder body needs to be stopped for repairing and welding once the combined feeder body is abraded and leaked. The combined feeder has the advantages of narrow internal space, high welding construction difficulty, long welding time and great trouble for normal production and maintenance. Therefore, how to pre-protect the combined feeder body, prolong the service life of the combined feeder and synchronize the combined feeder body with the service cycle of the feeding cover and the scoop is a problem to be solved by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a pre-protection method for a combined feeder of a lattice-type ball mill, which can prolong the service life of the body of the combined feeder, and synchronize the service life with the periods of a scoop and a feeding cover, thereby improving the efficiency, reducing the downtime caused by the abrasion of the body of the combined feeder, and improving the comprehensive benefits.
In order to solve the technical problems, the invention adopts the technical scheme that: a pre-protection method for a grate type ball mill combined feeder comprises the following steps:
s1, polishing and derusting a part A which is damaged on the stressed working surface of the inner wall of the body of the combined feeder and needs to be welded;
s2, rolling a high-chromium alloy wear-resisting plate into a first high-chromium alloy overlaying plate matched with the part A;
s3, attaching the first high-chromium alloy overlaying plate to a part A of the stressed working surface of the inner wall of the body of the combined ore feeder, and then welding and fixing the first high-chromium alloy overlaying plate to the part A of the stressed working surface of the inner wall of the body of the combined ore feeder in a welding mode;
s4, rolling a high-chromium alloy wear-resisting plate into a second high-chromium alloy overlaying plate matched with the parts B on the two sides of the arc which is easy to abrade and leak from the combined ore feeder body;
s5, attaching the second high-chromium alloy overlaying plate to the two sides B of the arc of the combined ore feeder body, which is easy to abrade, and then welding and fixing the second high-chromium alloy overlaying plate to the B of the combined ore feeder body in a welding mode;
and S6, after welding, coating high-molecular wear-resistant coating materials on all welding seams and exposed parts of the inner wall of the body of the combined feeder for protection.
Further, the size and the shape of the first high-chromium alloy wear-resistant plate are matched with the position A of the stressed working surface of the inner wall of the combined ore feeder body, and the size and the shape of the second high-chromium alloy wear-resistant plate are matched with the position B of the two sides of the arc easy to abrade and leak of the combined ore feeder body.
Furthermore, when the first high-chromium alloy wear-resisting plate is welded, a groove is formed, and the width and the depth of the groove are not more than 1/3 depths of the base material of the combined feeding device.
Furthermore, the high-molecular wear-resistant coating material is WN-07 high-molecular wear-resistant material.
Furthermore, the chromium content of the high-chromium alloy wear-resisting plate is more than or equal to 26%, and the specification of the high-chromium alloy wear-resisting plate is 10+ 8.
Further, the coating thickness of the high-molecular wear-resistant coating material is more than 8 mm.
Furthermore, before the high-molecular wear-resistant coating material is coated on the weld joint, the thin steel plate is cut into steel bars matched with the weld joint, then the steel bars are welded on the inner wall of the combined feeder body and at the position of the weld joint through spot welding, so that a coating cavity for coating the high-molecular wear-resistant coating material is formed, and then the high-molecular wear-resistant coating material is coated in the coating cavity to protect the weld joint.
Compared with the prior art, the invention has the beneficial effects that: aiming at the problem that all parts of the combined feeder body are not synchronous in abrasion, the combined feeder body which is fast in abrasion is subjected to a transformation scheme of pre-protection welding and welding line protection, the service life of the combined feeder body is prolonged, and the synchronization of the service cycles of all the parts is realized, so that the service cycle of spare parts is integrally prolonged, and the shutdown caused by the fact that the combined feeder body is abraded and leaked in advance during the period is reduced. After pre-protection, the service cycles of the combined feeder body, the scoop and the feeding cover are synchronous, so that the labor intensity of workers is reduced, the stopping time caused by the grinding leakage of the combined feeder body is shortened, the spare part cost is reduced, the use effect is very obvious, and the comprehensive benefit is very high.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: a is a structural schematic diagram of the site A, and B is a structural schematic diagram of the site B.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in the figure, the pre-protection method for the combined feeder of the lattice type ball mill comprises the following steps:
s1, polishing and derusting a part A which is damaged on the stressed working surface of the inner wall of the body of the combined feeder and needs to be welded;
s2, rolling a high-chromium alloy wear-resisting plate into a first high-chromium alloy overlaying plate matched with the part A;
s3, attaching the first high-chromium alloy overlaying plate to a part A of the stressed working surface of the inner wall of the body of the combined ore feeder, and then welding and fixing the first high-chromium alloy overlaying plate to the part A of the stressed working surface of the inner wall of the body of the combined ore feeder in a welding mode;
s4, rolling a high-chromium alloy wear-resisting plate into a second high-chromium alloy overlaying plate matched with the B parts on the two sides of the arc which is easy to abrade and leak from the combined feeder body;
s5, attaching the second high-chromium alloy overlaying plate to the two sides B of the arc of the combined ore feeder body, which is easy to abrade, and then welding and fixing the second high-chromium alloy overlaying plate to the B of the combined ore feeder body in a welding mode;
and S6, after welding, coating high-molecular wear-resistant coating materials on all welding seams and exposed parts of the inner wall of the body of the combined feeder for protection.
According to another embodiment of the invention, as shown in the figure, the size and the shape of the first high-chromium alloy wear-resistant plate are matched with the position A of the stressed working surface of the inner wall of the combined feeder body, and the size and the shape of the second high-chromium alloy wear-resistant plate are matched with the positions B on two sides of the arc which is easy to abrade and leak from the combined feeder body.
According to another embodiment of the invention, as shown in the figure, the first high chromium alloy wear-resisting plate is welded with a groove, and the width and the depth of the groove are not more than 1/3 depths of the combined feeder base material. In the process of steel plate welding, groove welding is to increase the volume of a molten pool and enable more welding materials to be filled in the molten pool, so that the steel plate welding has a reinforcing effect; if the base material is a plane, the steel plate to be welded can be welded flat after being beveled, namely a plurality of layers are welded, so that the strength is higher
According to another embodiment of the present invention, as shown in the figure, the polymer wear-resistant coating material is WN-07 polymer wear-resistant material.
According to another embodiment of the invention, as shown in the figure, the high chromium alloy wear plate has a chromium content of 26% or more, and the high chromium alloy wear plate has a specification of 10+ 8. 10+8 means: the base material is a 10mm steel plate, and a wear-resistant layer with the thickness of 8mm is overlaid on the base material to form the wear-resistant plate.
According to another embodiment of the present invention, as shown in the figure, the coating thickness of the high molecular wear-resistant coating material is greater than 8 mm.
According to another embodiment of the present invention, as shown in the figure, before the high molecular wear-resistant coating material is coated on the weld joint, the thin steel plate is cut into a steel strip matched with the weld joint, then the steel strip is welded on the inner wall of the combined feeder body and at the position corresponding to the weld joint through the spot welding method, so as to form a coating cavity for coating the high molecular wear-resistant coating material, and then the high molecular wear-resistant coating material is coated in the coating cavity, so as to protect the weld joint. After the whole welding process is finished, the welding line is protected by a high polymer material which is in a paste shape, so that the high polymer material is injected to achieve the purpose of protection after the welding line is cut into strips by a thin steel plate and fixed in a spot welding mode, and the form of the template and the pouring of cement are equivalent to a shell plate for pouring cement after a containing pool is formed.
The working principle of the invention is as follows: the service life of the combined feeder parts which are easy to wear is prolonged by performing pre-protection treatment on the combined feeder parts, so that the service cycles of the combined feeder parts are synchronous, temporary stop caused by body grinding leakage of the combined feeder during operation is avoided, the labor intensity of workers is reduced, and the integral service life of the combined feeder is prolonged. Through the protection to high chromium alloy antifriction plate macromolecular wear-resistant material for the welding seam, avoided the welding seam wearing and tearing probably to cause the high chromium alloy board to drop. After the combined feeder body stress surface matrix is used for one period, no abrasion exists, the service life of the combined feeder body stress surface matrix is estimated accordingly, 3 periods can be prolonged, spare part cost is greatly saved, equipment operation rate is improved, and comprehensive benefits are remarkable.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A pre-protection method for a grate type ball mill combined feeder is characterized by comprising the following steps: the method comprises the following steps:
s1, polishing and derusting a part A which is damaged on the stressed working surface of the inner wall of the body of the combined feeder and needs to be welded;
s2, rolling a high-chromium alloy wear-resisting plate into a first high-chromium alloy overlaying plate matched with the part A;
s3, attaching the first high-chromium alloy overlaying plate to a part A of the stressed working surface of the inner wall of the body of the combined ore feeder, and then welding and fixing the first high-chromium alloy overlaying plate to the part A of the stressed working surface of the inner wall of the body of the combined ore feeder in a welding mode;
s4, rolling a high-chromium alloy wear-resisting plate into a second high-chromium alloy overlaying plate matched with the B parts on the two sides of the arc which is easy to abrade and leak from the combined feeder body;
s5, attaching the second high-chromium alloy overlaying plate to the two sides B of the arc of the combined ore feeder body, which is easy to abrade, and then welding and fixing the second high-chromium alloy overlaying plate to the B of the combined ore feeder body in a welding mode;
and S6, after welding, coating high-molecular wear-resistant coating materials on all welding seams and exposed parts of the inner wall of the body of the combined feeder for protection.
2. A method of pre-protecting a grate-type ball mill integrated feeder as recited in claim 1, wherein: the size and the shape of the first high-chromium alloy wear-resistant plate are matched with the position A of a stressed working surface of the inner wall of the combined ore feeder body, and the size and the shape of the second high-chromium alloy wear-resistant plate are matched with the position B of the two sides of the arc which is easy to abrade and leak from the combined ore feeder body.
3. A method of pre-protecting a grate-type ball mill integrated feeder as recited in claim 1, wherein: and a groove is formed when the first high-chromium alloy wear-resisting plate is welded, and the width and the depth of the groove are not more than 1/3 depth of the base material of the combined feeding device.
4. A method of pre-protecting a grate-type ball mill integrated feeder as recited in claim 1, wherein: the high-molecular wear-resistant coating material is WN-07 high-molecular wear-resistant material.
5. A method of pre-protecting a grate-type ball mill integrated feeder as recited in claim 1, wherein: the chromium content of the high-chromium alloy wear-resistant plate is not less than 26%, and the specification of the high-chromium alloy wear-resistant plate is 10+ 8.
6. A method of pre-protecting a grate-type ball mill integrated feeder as recited in claim 1, wherein: the coating thickness of the high-molecular wear-resistant coating material is more than 8 mm.
7. A method of pre-protecting a grate-type ball mill integrated feeder as recited in claim 1, wherein: before the high-molecular wear-resistant coating material is coated on the weld joint, the thin steel plate is cut into steel bars matched with the weld joint, then the steel bars are welded on the inner wall of the combined feeder body and at the position of the weld joint through a spot welding method, so that a coating cavity for coating the high-molecular wear-resistant coating material is formed, and then the high-molecular wear-resistant coating material is coated in the coating cavity to protect the weld joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210302256.2A CN114535852A (en) | 2022-03-25 | 2022-03-25 | Pre-protection method for combined feeder of lattice type ball mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210302256.2A CN114535852A (en) | 2022-03-25 | 2022-03-25 | Pre-protection method for combined feeder of lattice type ball mill |
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| CN114535852A true CN114535852A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210302256.2A Pending CN114535852A (en) | 2022-03-25 | 2022-03-25 | Pre-protection method for combined feeder of lattice type ball mill |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0335784A1 (en) * | 1988-03-30 | 1989-10-04 | Societe Industrielle D'isolation Et De Fournitures D'usines | Process and device for lining welded pipes |
| KR200430393Y1 (en) * | 2006-08-30 | 2006-11-13 | 주식회사 천보엔지니어링 | Screw decanter with protection cover |
| CN101837879A (en) * | 2010-05-17 | 2010-09-22 | 曹志德 | Screw sealing feeder |
| CN101850477A (en) * | 2010-05-26 | 2010-10-06 | 山东东华水泥有限公司 | Process for repairing worn discharging head of rotor scale |
| CN202399590U (en) * | 2011-12-07 | 2012-08-29 | 广州乾鼎焊接科技有限公司 | Composite wear-resisting steel plate |
| CN203916767U (en) * | 2014-06-26 | 2014-11-05 | 大唐南京发电厂 | There is the coal pulverizer of Comprehensive Preventing mill tube wall |
| CN105215937A (en) * | 2015-11-03 | 2016-01-06 | 攀钢集团矿业有限公司 | A kind of specific purpose tool and method dismantling drum scoop feeder |
| CN106833350A (en) * | 2017-03-09 | 2017-06-13 | 黄河水利委员会黄河水利科学研究院 | A kind of preparation method of anti scuffing cast urethane elastomer coating high |
| CN107384142A (en) * | 2017-08-25 | 2017-11-24 | 山东海思蓝高分子材料有限公司 | A kind of new weld seam coating and preparation method thereof and application method |
| CN111791016A (en) * | 2020-08-13 | 2020-10-20 | 曹妃甸港集团股份有限公司 | Ore grab bucket flap plate repairing process |
-
2022
- 2022-03-25 CN CN202210302256.2A patent/CN114535852A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0335784A1 (en) * | 1988-03-30 | 1989-10-04 | Societe Industrielle D'isolation Et De Fournitures D'usines | Process and device for lining welded pipes |
| KR200430393Y1 (en) * | 2006-08-30 | 2006-11-13 | 주식회사 천보엔지니어링 | Screw decanter with protection cover |
| CN101837879A (en) * | 2010-05-17 | 2010-09-22 | 曹志德 | Screw sealing feeder |
| CN101850477A (en) * | 2010-05-26 | 2010-10-06 | 山东东华水泥有限公司 | Process for repairing worn discharging head of rotor scale |
| CN202399590U (en) * | 2011-12-07 | 2012-08-29 | 广州乾鼎焊接科技有限公司 | Composite wear-resisting steel plate |
| CN203916767U (en) * | 2014-06-26 | 2014-11-05 | 大唐南京发电厂 | There is the coal pulverizer of Comprehensive Preventing mill tube wall |
| CN105215937A (en) * | 2015-11-03 | 2016-01-06 | 攀钢集团矿业有限公司 | A kind of specific purpose tool and method dismantling drum scoop feeder |
| CN106833350A (en) * | 2017-03-09 | 2017-06-13 | 黄河水利委员会黄河水利科学研究院 | A kind of preparation method of anti scuffing cast urethane elastomer coating high |
| CN107384142A (en) * | 2017-08-25 | 2017-11-24 | 山东海思蓝高分子材料有限公司 | A kind of new weld seam coating and preparation method thereof and application method |
| CN111791016A (en) * | 2020-08-13 | 2020-10-20 | 曹妃甸港集团股份有限公司 | Ore grab bucket flap plate repairing process |
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