CN104874892A - Surface repairing method of roller shoe of high-pressure roller mill - Google Patents
Surface repairing method of roller shoe of high-pressure roller mill Download PDFInfo
- Publication number
- CN104874892A CN104874892A CN201510297462.9A CN201510297462A CN104874892A CN 104874892 A CN104874892 A CN 104874892A CN 201510297462 A CN201510297462 A CN 201510297462A CN 104874892 A CN104874892 A CN 104874892A
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- CN
- China
- Prior art keywords
- abrasion
- repaired
- welded
- backing block
- proof backing
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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
- B23K5/00—Gas flame welding
- B23K5/213—Preliminary treatment
-
- 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
- B23K5/00—Gas flame 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
- B23K5/00—Gas flame welding
- B23K5/006—Gas flame welding specially adapted for particular articles or work
-
- 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
- B23K5/00—Gas flame welding
- B23K5/22—Auxiliary equipment, e.g. backings, guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a surface repairing method of a roller shoe of a high-pressure roller mill. The method includes the steps of selecting the roller shoe of the high-pressure roller mill, to be repaired, with pits formed after spikes shedding, and clearing the dust in an area to be repaired; selecting a part of the area to be repaired, as a part to be welded, and preheating the part to be welded, by fire welding; selecting a wear-resistant liner matching with the part to be welded, in size, with the wear-resistant liner being composed of a bottom layer and an upper layer; placing the wear-resistant liner on the part to be welded, allowing the bottom layer of the wear-resistant liner to contact the part to be welded, subjecting the periphery of the wear-resistant liner to full welding with stainless steel electrodes so as to ensure that the height of a weld is equal to the thickness of the wear-resistant liner; subjecting the edge of the wear-resistant liner welded, to burr removal; repeating the five steps for the area to be repaired, until that the whole area to be repaired is completely repaired. By the use of the method, the problem that the prior art is in lack of effective repair for the worn surface of the roller shoe of the high-pressure roller mill is solved.
Description
Technical field
The invention belongs to plant equipment restorative procedure technical field, be specifically related to a kind of restorative procedure of high-pressure roller mill roller tire surface.
Background technology
High-pressure roller mill is a kind of metallic ore disintegrating apparatus efficiently, of paramount importance equipment in muck production technology much broken and lessmill theory, the Multi layer extrusion crushing technology of its advanced person can make product granularity-8mm remain on more than 90%, is the equipment of ore-breaking plant's most critical.After high-pressure roller mill uses a period of time, along with the aggravation of roller tire surface abrasion, the roller nail on roller tire surface will start to come off, and then Gun Tai basic unit also can wear and tear herein, to " pitting " that roller tire surface causes shape to differ, and roller nail comes off and the impaired most direct result caused of basic unit is exactly that discharging-material size cannot ensure, if the roller nail on roller tire surface all comes off, so roller mill will lose the ability of attrition crushing substantially, to the difficulty that the increase of downstream ball mill process ore is very large, even can affect and stop production completely.If the roller mill roller tire that more transducer set is new approximately needs 1,200 ten thousand yuans, this will cause no small burden to Workshop Production cost, and the roller tire repairing wearing and tearing faces a lot of difficulty, at the present stage almost incomparable more shaping and recovery scenario of reliable in quality.Roller mill roller tire is made up of action roller and fixed roll, wherein abrading section mainly the coming off and the wearing and tearing of basic unit of roller nail, and roller nail and basic unit's material are diamondite steel.In former installation process, it is inner that roller nail mainly adopts special glue to utilize hydraulic technique to be embedded in Gun Tai basic unit, exposes 5mm.Along with the wearing and tearing of basic unit, roller nail will start coming off in various degree, and then causes whole surrounding Gun Ding collective to come off, and " pitting " that formation rule differs, makes roller tire lose attrition crushing ability.Even if continue buying roller nail, prior art also cannot be utilized to inlay, more cannot process its surface.Therefore, the high-pressure roller mill roller tire surface of how effectively to repair wearing and tearing becomes a difficult problem of pendulum in face of technical staff.
Summary of the invention
The object of this invention is to provide a kind of restorative procedure of high-pressure roller mill roller tire surface, solve the problem lacking the high-pressure roller mill roller tire surface of effectively repairing wearing and tearing in prior art.
The technical solution adopted in the present invention is:
The restorative procedure on high-pressure roller mill roller tire surface, specifically implement according to following steps:
Step 1, selection roller follows closely the high-pressure roller mill roller tire to be repaired that the rear surface that comes off forms pit, is cleaned out by the dust of area to be repaired;
Step 2, in area to be repaired, a selected place is as position to be welded, uses fire weldering to treat welding position and preheats;
Step 3, select the abrasion-proof backing block matched with the size at position to be welded, abrasion-proof backing block is made up of bottom and upper strata two parts;
Step 4, the abrasion-proof backing block that step 3 is selected is placed on position to be welded, and the bottom of abrasion-proof backing block is contacted with position to be welded, then adopts stainless steel electrode by abrasion-proof backing block whole full weld all around, ensures that weld bead height is equal with the thickness of abrasion-proof backing block;
Step 5, subsequent treatment: burr is removed to the abrasion-proof backing block edge welded through step 4;
Step 6, repeats above-mentioned five steps in whole area to be repaired, until whole area to be repaired has been repaired.
Feature of the present invention is also:
The instrument clearing up dust employing in step 1 is hairbrush or steel brush.
The instrument that the weldering of step 2 moderate heat adopts is adjustable A.C. welder and oxygen-acetylene bottle.
In step 3, the bottom of abrasion-proof backing block is steel plate, and thickness is 6mm, and the upper strata of abrasion-proof backing block is that built-up welding formation reaches more than 50% Cr with volume fraction
7c
3carbide is main alloy wear-resisting layer, and thickness is 6mm.
In step 3, abrasion-proof backing block length and width dimensions have following four kinds of specification: 50 × 100mm, 50 × 200mm, 50 × 250mm, 50 × 300mm.
The invention has the beneficial effects as follows:
The restorative procedure on a kind of high-pressure roller mill roller tire surface of the present invention, follows closely at roller the abrasion-proof backing block that the roller tire surface soldered that comes off is made up of jointly bottom steel plate and wearing layer, makes the roller tire significant prolongation in service life of surface abrasion, greatly saved production cost; Restorative procedure of the present invention is simple, and adopts the roller tire result of use after restorative procedure of the present invention reparation good, and its product granularity pulverized is not greatly affected.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail:
The restorative procedure on a kind of high-pressure roller mill roller tire of the present invention surface, specifically implement according to following steps:
Step 1, selection roller follows closely the high-pressure roller mill roller tire to be repaired that the rear surface that comes off forms pit, adopts hairbrush or steel brush to be cleaned out by the dust of area to be repaired;
Step 2, in area to be repaired, a selected place is as position to be welded, uses fire weldering to treat welding position and preheats, the oxygen-acetylene bottle of instrument needed for adjustable A.C. welder and fire weldering of employing;
Step 3, select the abrasion-proof backing block matched with the size at position to be welded, abrasion-proof backing block is made up of bottom and upper strata two parts, and wherein, bottom is steel plate, and thickness is 6mm, and upper strata is that built-up welding formation reaches more than 50% Cr with volume fraction
7c
3carbide is main alloy wear-resisting layer, and thickness is 6mm; Abrasion-proof backing block length and width dimensions have following four kinds of specification: 50 × 100mm, 50 × 200mm, 50 × 250mm, 50 × 300mm;
Step 4, the abrasion-proof backing block that step 3 is selected is placed on position to be welded, and the bottom of abrasion-proof backing block is contacted with position to be welded, then adopts stainless steel electrode by abrasion-proof backing block whole full weld all around, ensures that weld bead height is equal with the thickness of abrasion-proof backing block;
Step 5, subsequent treatment: burr is removed to the abrasion-proof backing block edge welded through step 4;
Step 6, repeats above-mentioned five steps in whole area to be repaired, until whole area to be repaired has been repaired.
Above-mentioned steps 1 and step 2 are all to strengthen weldability.After adopting welding method of the present invention to repair the roller tire surface of high-pressure roller mill wearing and tearing, its discharging-material size only has a small amount of decline compared with new high-pressure roller mill, is more than 90% drop to about 80% from original product granularity-8mm; Occur being shed to the roller tire finally more renewed from the roller nail on roller tire surface, after adopting welding method of the present invention, the service time of roller tire extends about 10 months again, greatly ensure that productivity effect.Such as molybdenum concntrate workshop, molybdenum concntrate output maintains about 550 tons every month, and in 10 months that extend, molybdenum concntrate process 6000T nearly, has made very large contribution to production.
Welding method of the present invention is remarkable for roller tire protected effect, is mainly reflected in the following aspects:
1. because former roller tire is expensive, and abrasion-proof backing block and stainless steel electrode lower cost for material, therefore, it is possible to greatly cost-saving.
2. after welding abrasion-proof backing block, product granularity is not greatly affected, and by some other supplement production techniques, the method such as gap in small, broken bits, interpolation product humidity in such as reasonable adjusting, roller tire continues again 10 months life-spans, for productivity effect makes very big contribution.
3. welding method of the present invention is simple to operate, and the roller on roller tire surface only need weld it after following closely and coming off again, and welds the effect that the abrasion-proof backing block got on has resistance wearing and tearing, is achieve many things at one stroke.
Claims (5)
1. the restorative procedure on high-pressure roller mill roller tire surface, is characterized in that, specifically implements according to following steps:
Step 1, selection roller follows closely the high-pressure roller mill roller tire to be repaired that the rear surface that comes off forms pit, is cleaned out by the dust of area to be repaired;
Step 2, in area to be repaired, a selected place is as position to be welded, uses fire weldering to treat welding position and preheats;
Step 3, select the abrasion-proof backing block matched with the size at position to be welded, abrasion-proof backing block is made up of bottom and upper strata two parts;
Step 4, the abrasion-proof backing block that step 3 is selected is placed on position to be welded, and the bottom of abrasion-proof backing block is contacted with position to be welded, then adopts stainless steel electrode by abrasion-proof backing block whole full weld all around, ensures that weld bead height is equal with the thickness of abrasion-proof backing block;
Step 5, subsequent treatment: burr is removed to the abrasion-proof backing block edge welded through step 4;
Step 6, repeats above-mentioned five steps in whole area to be repaired, until whole area to be repaired has been repaired.
2. the restorative procedure on high-pressure roller mill roller tire surface according to claim 1, is characterized in that, the instrument that the cleaning dust described in step 1 adopts is hairbrush or steel brush.
3. the restorative procedure on high-pressure roller mill roller tire surface according to claim 1, is characterized in that, the instrument that the fire weldering described in step 2 adopts is adjustable A.C. welder and oxygen-acetylene bottle.
4. the restorative procedure on high-pressure roller mill roller tire surface according to claim 1, is characterized in that, the bottom of the abrasion-proof backing block described in step 3 is steel plate, and thickness is 6mm, and the upper strata of described abrasion-proof backing block is that built-up welding formation reaches more than 50% Cr with volume fraction
7c
3carbide is main alloy wear-resisting layer, and thickness is 6mm.
5. the restorative procedure on high-pressure roller mill roller tire surface according to claim 1, is characterized in that, the abrasion-proof backing block length described in step 3 and width dimensions have following four kinds of specification: 50 × 100mm, 50 × 200mm, 50 × 250mm, 50 × 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510297462.9A CN104874892B (en) | 2015-06-03 | 2015-06-03 | The restorative procedure on high-pressure roller mill roller tire surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510297462.9A CN104874892B (en) | 2015-06-03 | 2015-06-03 | The restorative procedure on high-pressure roller mill roller tire surface |
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| Publication Number | Publication Date |
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| CN104874892A true CN104874892A (en) | 2015-09-02 |
| CN104874892B CN104874892B (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510297462.9A Active CN104874892B (en) | 2015-06-03 | 2015-06-03 | The restorative procedure on high-pressure roller mill roller tire surface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921850A (en) * | 2016-05-31 | 2016-09-07 | 铜陵市东方矿冶机械有限责任公司 | Overlaying abrasion-resistant plate |
| CN108942077A (en) * | 2018-08-13 | 2018-12-07 | 芜湖鼎瀚再制造技术有限公司 | A kind of grinder hammerhead renovation technique |
Citations (7)
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|---|---|---|---|---|
| CN87101288A (en) * | 1987-12-29 | 1988-11-09 | 中国船舶工业总公司天津修船技术研究所 | Process for repairing high manganese steel bagger |
| CN2204643Y (en) * | 1992-05-29 | 1995-08-09 | 贾世文 | Dual-metal roller for coal mill |
| CN1174772A (en) * | 1997-06-27 | 1998-03-04 | 重庆大学 | Technology for finishing surface defect on iron casting |
| CN101966476A (en) * | 2009-07-28 | 2011-02-09 | 鞍钢集团矿业公司 | Welding process of crusher fixed cone lining plate with abrasion-resistant steel plate |
| JP2013180312A (en) * | 2012-03-01 | 2013-09-12 | Kurimoto Ltd | Removing method for existing padding material and crushing member |
| CN103612000A (en) * | 2013-12-02 | 2014-03-05 | 湖州市银鑫轧辊有限公司 | Cold bend roller welding repairing method |
| CN104526248A (en) * | 2014-11-04 | 2015-04-22 | 马鞍山市格林矿冶环保设备有限公司 | Column nail roller surface repairing method of novel high-pressure roller mill |
-
2015
- 2015-06-03 CN CN201510297462.9A patent/CN104874892B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101288A (en) * | 1987-12-29 | 1988-11-09 | 中国船舶工业总公司天津修船技术研究所 | Process for repairing high manganese steel bagger |
| CN2204643Y (en) * | 1992-05-29 | 1995-08-09 | 贾世文 | Dual-metal roller for coal mill |
| CN1174772A (en) * | 1997-06-27 | 1998-03-04 | 重庆大学 | Technology for finishing surface defect on iron casting |
| CN101966476A (en) * | 2009-07-28 | 2011-02-09 | 鞍钢集团矿业公司 | Welding process of crusher fixed cone lining plate with abrasion-resistant steel plate |
| JP2013180312A (en) * | 2012-03-01 | 2013-09-12 | Kurimoto Ltd | Removing method for existing padding material and crushing member |
| CN103612000A (en) * | 2013-12-02 | 2014-03-05 | 湖州市银鑫轧辊有限公司 | Cold bend roller welding repairing method |
| CN104526248A (en) * | 2014-11-04 | 2015-04-22 | 马鞍山市格林矿冶环保设备有限公司 | Column nail roller surface repairing method of novel high-pressure roller mill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921850A (en) * | 2016-05-31 | 2016-09-07 | 铜陵市东方矿冶机械有限责任公司 | Overlaying abrasion-resistant plate |
| CN108942077A (en) * | 2018-08-13 | 2018-12-07 | 芜湖鼎瀚再制造技术有限公司 | A kind of grinder hammerhead renovation technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104874892B (en) | 2018-03-30 |
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