CN105345220A - Welding repair method for chain wheel of conveyor - Google Patents
Welding repair method for chain wheel of conveyor Download PDFInfo
- Publication number
- CN105345220A CN105345220A CN201510907438.2A CN201510907438A CN105345220A CN 105345220 A CN105345220 A CN 105345220A CN 201510907438 A CN201510907438 A CN 201510907438A CN 105345220 A CN105345220 A CN 105345220A
- Authority
- CN
- China
- Prior art keywords
- welding
- built
- transporter
- weld seam
- sprocket wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting 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
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
Abstract
The invention discloses a welding repair method for a chain wheel of a conveyor, and relates to a repair method for a chain wheel of a conveyor. The invention aims at solving the problems of short service life of a chain wheel of a conveyor, and low wear resistance existing in the repaired chain wheel of the conveyor in the prior art. The method disclosed by the invention comprises the following steps: 1. drying welding rods in a welding rod dryer; 2. carrying out polishing treatment on the worn parts of the chain wheel of the conveyor before welding; 3. carrying out bottom layer surfacing and polishing; 4. carrying out transition layer surfacing and polishing; and 5. carrying out wear-resistant layer surfacing and polishing. Equipment needed by the method disclosed by the invention is simple, convenient to maintain, and low in cost, and the hardness of a wear-resistant layer is increased, therefore, the wear resistance of the chain wheel of the conveyor is high, and the service life of the chain wheel of the conveyor is prolonged. The method disclosed by the invention is used for repairing the chain wheel of the conveyor.
Description
Technical field
The present invention relates to a kind of welding repair method of transporter sprocket wheel.
Background technology
At present, transporter sprocket wheel is applied extremely extensive in the coal mine machinery industry of China, and transporter sprocket wheel adopts cast steel manufacture usually, material selection: 42CrMo steel, goes out groove after casting technique completes with machine tooling; Larger impulse load and added impact load is produced owing to will bear in transporter work in sprocket wheel use procedure, sprocket wheel and chain wear are strengthened, destroy engaging of chain and sprocket wheel, for making chain and sprocket wheel correct engagement in running, require that sprocket wheel has correct tooth profile, size and higher machining accuracy and higher wearability and impact resistance, therefore also the welding repair method of transporter sprocket wheel is had higher requirement.
For the welding repair method of transporter sprocket wheel, current main solution has two kinds: oxygen-acetylene repairing restorative procedure and carbon dioxide gas arc welding restorative procedure; Oxygen-acetylene repairing gas welding flame temperature is low, and slowly, efficiency is low in heating; Heat is concentrated not, and weldment is large and uneven by heat rating, and post welding distortion is large, weldquality is not high; Carbon dioxide gas arc welding restorative procedure spatter is comparatively large, and appearance of weld is poor, and change welding wire cumbersome, efficiency is low; Have specialized maintenance producer and manufactory, experiment uses the method for SMAW J507 welding rod to repair, and because wear resistance is not good, use a period of time workpiece generation fragility or wearing layer to peel off, serious directly causing is scrapped, and does not all obtain successfully always.
Summary of the invention
There is the problem worn no resistance in the transporter sprocket wheel after the present invention will solve short, prior art reparation in transporter sprocket wheel service life.
The welding repair method of transporter sprocket wheel of the present invention carries out according to following steps:
One, welds prepares: welding rod is placed in welding rod drying machine, at 250 DEG C ~ 300 DEG C insulation 1h ~ 2h, for subsequent use;
Two, pre-welding treatment: utilize angle grinding machine, carries out grinding process to transporter sprocket wear part;
Three, bottom built-up welding: transporter sprocket wheel is preheated to 200 DEG C ~ 250 DEG C, then along transporter sprocket periphery wearing part counterclockwise at the surface overlaying 6 road weld seam of step 2 grinding process, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, obtain bottom built-up welding; Described welding current is 100A ~ 120A, and weldingvoltage is 22V ~ 24V; Described bottom built-up welding welding rod used is the D107 welding rod of 3.2mm; During described bottom built-up welding, electric welding machine DC reverse connection;
Four, transition zone built-up welding: at bottom facing surface, along transporter sprocket periphery counterclockwise built-up welding 6 road weld seam, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, obtain transition zone built-up welding; Described welding current is 100A ~ 130A, and weldingvoltage is 22V ~ 24V; Described transition zone built-up welding welding rod used is the D1276 welding rod of 3.2mm; During described transition zone built-up welding, electric welding machine DC reverse connection;
Five, wearing layer built-up welding: at transition zone facing surface, along transporter sprocket periphery counterclockwise built-up welding 6 road weld seam, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, namely complete REPAIR WELDING; During described bottom built-up welding, the welding current of electric welding machine is 100A ~ 120A, and weldingvoltage is 22V ~ 24V; Described wearing layer built-up welding welding rod used is the D707 welding rod of 3.2mm; During described wearing layer built-up welding, electric welding machine DC reverse connection.
The present invention comprises following beneficial effect:
1, the inventive method adopts SMAW, and be suitable for welding single-piece or small batch workpiece and irregular, any locus and not easily realize the weld seam of automatic weld, equipment is simple, and easy to maintenance, cost is low, and welding energy is little, and speed of welding is fast;
2, the inventive method adopts the welding of thin layer multiple tracks, thus avoids the hot shadow zone of weld seam overheated, improves hardness and the toughness in weld seam and hot shadow zone;
3, the bottom after the inventive method process is pearlitic steel, transition zone is high-chromium austenite steel, wearing layer is tungsten carbide, tungsten carbide is the important component of carbide alloy, can as excellent anti-brute force wearing and tearing resurfacing welding material, be used for resisting the wearing and tearing of sprocket surface, what arc welding was formed is cast tungsten carbide, in built-up welding, tungsten carbide melts few, distribute easy to control, and have the effect of carburizing, the phosphorus content of carcass metal can be increased, thus increase wearing layer hardness, thus wearability is good;
4, the welding repair method of transporter sprocket wheel of the present invention, can repair the transporter sprocket wheel of heavy wear, empirical tests, original transporter sprocket wheel is when carry coal spoil, oepration at full load can reach 12 months, and during transport coking coal, oepration at full load can reach 6 months.Transporter sprocket wheel after reparation can go up increase about 3 months in former basis again service time, extends the service life of sprocket wheel, therefore remarkable in economical benefits, has wide popularizing application prospect.
Accompanying drawing explanation
Fig. 1 is transporter sprocket wheel front view in embodiment 1;
Fig. 2 is preprosthetic transporter sprocket wheel A-A direction view in embodiment 1, and wherein 1 is sprocket wheel tooth top, and 2 is sprocket wheel tooth top wearing part;
Fig. 3 is the transporter sprocket wheel A-A direction view after repairing in embodiment 1, and wherein 1 is sprocket wheel tooth top, and 3 is the bottom built-up welding of repairing sprocket wheel tooth top wearing part; 4 is the transition zone built-up welding of repairing sprocket wheel tooth top wearing part; 5 is the wearing layer built-up welding of repairing sprocket wheel tooth top wearing part;
Detailed description of the invention
Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises any reasonable combination between each detailed description of the invention.
Detailed description of the invention one: the welding repair method of present embodiment transporter sprocket wheel, realizes according to the following steps:
One, welds prepares: welding rod is placed in welding rod drying machine, at 250 DEG C ~ 300 DEG C insulation 1h ~ 2h, for subsequent use;
Two, pre-welding treatment: utilize angle grinding machine, carries out grinding process to transporter sprocket wear part,
Three, bottom built-up welding: transporter sprocket wheel is preheated to 200 DEG C ~ 250 DEG C, then along transporter sprocket periphery wearing part counterclockwise at the surface overlaying 6 road weld seam of step 2 grinding process, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, obtain bottom built-up welding; Described welding current is 100A ~ 120A, and weldingvoltage is 22V ~ 24V; Described bottom built-up welding welding rod used is the D107 welding rod of 3.2mm;
Four, transition zone built-up welding: at bottom facing surface, along transporter sprocket periphery counterclockwise built-up welding 6 road weld seam, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, obtain transition zone built-up welding; Described welding current is 100A ~ 130A, and weldingvoltage is 22V ~ 24V; Described transition zone built-up welding welding rod used is the D1276 welding rod of 3.2mm;
Five, wearing layer built-up welding: at transition zone facing surface, along transporter sprocket periphery counterclockwise built-up welding 6 road weld seam, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, namely complete REPAIR WELDING; During described bottom built-up welding, the welding current of electric welding machine is 100A ~ 120A, and weldingvoltage is 22V ~ 24V; Described wearing layer built-up welding welding rod used is the D707 welding rod of 3.2mm.
Present embodiment comprises following beneficial effect:
1, present embodiment method adopts SMAW, and be suitable for welding single-piece or small batch workpiece and irregular, any locus and not easily realize the weld seam of automatic weld, equipment is simple, and easy to maintenance, cost is low, and welding energy is little, and speed of welding is fast;
2, present embodiment method adopts the welding of thin layer multiple tracks, thus avoids the hot shadow zone of weld seam overheated, improves hardness and the toughness in weld seam and hot shadow zone;
3, the bottom after present embodiment process is pearlitic steel, transition zone is high-chromium austenite steel, wearing layer is tungsten carbide, tungsten carbide is the important component of carbide alloy, can as excellent anti-brute force wearing and tearing resurfacing welding material, be used for resisting the wearing and tearing of sprocket surface, what arc welding was formed is cast tungsten carbide, in built-up welding, tungsten carbide melts few, distribute easy to control, and have the effect of carburizing, the phosphorus content of carcass metal can be increased, thus increase wearing layer hardness, thus wearability is good;
4, the welding repair method of the transporter sprocket wheel of present embodiment, can repair the transporter sprocket wheel of heavy wear, empirical tests, original transporter sprocket wheel is when carry coal spoil, oepration at full load can reach 12 months, and during transport coking coal, oepration at full load can reach 6 months.Transporter sprocket wheel after reparation can go up increase about 3 months in former basis again service time, extends the service life of sprocket wheel, therefore remarkable in economical benefits, has wide popularizing application prospect.
Detailed description of the invention two: present embodiment and detailed description of the invention one unlike: during bottom built-up welding described in step 3, electric welding machine DC reverse connection.Other step is identical with detailed description of the invention one with parameter.
Detailed description of the invention three: present embodiment and detailed description of the invention one or two unlike: during transition zone built-up welding described in step 4, electric welding machine DC reverse connection.Other step is identical with detailed description of the invention one or two with parameter.
Detailed description of the invention four: one of present embodiment and detailed description of the invention one to three unlike: during wearing layer built-up welding described in step 5, electric welding machine DC reverse connection.Other step is identical with one of parameter and detailed description of the invention one to three.
Detailed description of the invention five: one of present embodiment and detailed description of the invention one to four unlike: during described bottom built-up welding described in step 5, the welding current of electric welding machine is 105A, and weldingvoltage is 23V; Other step is identical with one of parameter and detailed description of the invention one to four.
Detailed description of the invention six: one of present embodiment and detailed description of the invention one to five unlike: described in step 3, transporter sprocket wheel is preheated to 250 DEG C.Other step is identical with one of parameter and detailed description of the invention one to five.
The inventive method effect is verified by following examples:
Embodiment 1: the welding repair method of the transporter sprocket wheel described in the present embodiment realizes according to the following steps:
One, welds prepares: welding rod is placed in welding rod drying machine, at 250 DEG C of insulation 1h, for subsequent use;
Two, pre-welding treatment: utilize angle grinding machine, carries out grinding process to transporter sprocket wear part,
Three, bottom built-up welding: transporter sprocket wheel is preheated to 250 DEG C, then along transporter sprocket periphery wearing part counterclockwise at the surface overlaying 6 road weld seam of step 2 grinding process, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm, finally utilize angle grinding machine by weld grinding to 1.5mm, obtain bottom built-up welding; Described welding current is 100A, and weldingvoltage is 23V; Described bottom built-up welding welding rod used is the D107 welding rod of 3.2mm; During described bottom built-up welding, electric welding machine DC reverse connection;
Four, transition zone built-up welding: at bottom facing surface, along transporter sprocket periphery counterclockwise built-up welding 6 road weld seam, front one weld seam 1/2 place of one weld seam pressure wherein, throat depth is 3mm, finally utilizes angle grinding machine by weld grinding to 1.5mm, obtains transition zone built-up welding; Described welding current is 120A, and weldingvoltage is 24V; Described transition zone built-up welding welding rod used is the D1276 welding rod of 3.2mm; During described transition zone built-up welding, electric welding machine DC reverse connection;
Five, wearing layer built-up welding: at transition zone facing surface, along transporter sprocket periphery counterclockwise built-up welding 6 road weld seam, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3.5mm, finally utilize angle grinding machine by weld grinding to 1.5mm, namely complete REPAIR WELDING; During described bottom built-up welding, the welding current of electric welding machine is 105A, and weldingvoltage is 23V; Described wearing layer built-up welding welding rod used is the D707 welding rod of 3.2mm; During described wearing layer built-up welding, electric welding machine DC reverse connection.
As shown in Figure 1, Fig. 2 is transporter sprocket wheel A-A direction view to the sprocket wheel front view that the present embodiment is repaired, and wherein 1 is sprocket wheel tooth top, and 2 is sprocket wheel tooth top wearing part; Fig. 3 is the transporter sprocket wheel A-A direction view after repairing, and wherein 1 is sprocket wheel tooth top, and 3 is the bottom built-up welding of repairing sprocket wheel tooth top wearing part; 4 is the transition zone built-up welding of repairing sprocket wheel tooth top wearing part; 5 is the wearing layer built-up welding of repairing sprocket wheel tooth top wearing part;
Test the metallochemistry composition of bottom, transition zone and wearing layer built-up welding and hardness, test result is as shown in table 1 ~ 3; After tested, Brinell hardness and Vickers hardness index all reach instructions for use, and wearing layer is tungsten carbide, can increase the phosphorus content of carcass metal, increase wearing layer hardness, and then wearability are good;
Reparation completes butt welded seam and heat affected area after 24 hours and carries out 100%MT detection, and assay is pressed JB/T4730.4 ~ 2005 and evaluated; By experiment known, Welding Repair Technology welding performance is excellent, sprocket wheel repair place hardness increase, repair position and sprocket wheel mother metal fusion character good, add the anti-wear performance of sprocket wheel;
The welding repair method of the present embodiment transporter sprocket wheel, can repair the transporter sprocket wheel of heavy wear, empirical tests, and original transporter sprocket wheel is when carry coal spoil, and oepration at full load can reach 12 months, and during transport coking coal, oepration at full load can reach 6 months.Transporter sprocket wheel after reparation can go up increase about 3 months in former basis again service time, extends the service life of sprocket wheel, remarkable in economical benefits.
Table 1 bottom deposited metal chemical composition and hardness
Table 2 transition deposited metal chemical composition and hardness
Table 3 wearing layer deposited metal chemical composition and hardness
Claims (4)
1. the welding repair method of transporter sprocket wheel, is characterized in that the method realizes according to the following steps:
One, welds prepares: welding rod is placed in welding rod drying machine, at 250 DEG C ~ 300 DEG C insulation 1h ~ 2h, for subsequent use;
Two, pre-welding treatment: utilize angle grinding machine, carries out grinding process to transporter sprocket wear part;
Three, bottom built-up welding: transporter sprocket wheel is preheated to 200 DEG C ~ 250 DEG C, then along transporter sprocket periphery wearing part counterclockwise at the surface overlaying 6 road weld seam of step 2 grinding process, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, obtain bottom built-up welding; Described welding current is 100A ~ 120A, and weldingvoltage is 22V ~ 24V; Described bottom built-up welding welding rod used is the D107 welding rod of 3.2mm;
Four, transition zone built-up welding: at bottom facing surface, along transporter sprocket periphery counterclockwise built-up welding 6 road weld seam, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, obtain transition zone built-up welding; Described welding current is 100A ~ 130A, and weldingvoltage is 22V ~ 24V; Described transition zone built-up welding welding rod used is the D1276 welding rod of 3.2mm;
Five, wearing layer built-up welding: at transition zone facing surface, along transporter sprocket periphery counterclockwise built-up welding 6 road weld seam, one front one weld seam 1/2 place of weld seam pressure wherein, throat depth is 3mm ~ 3.5mm, finally utilize angle grinding machine by weld grinding to 1mm ~ 1.5mm, namely complete REPAIR WELDING; During described bottom built-up welding, the welding current of electric welding machine is 100A ~ 120A, and weldingvoltage is 22V ~ 24V; Described wearing layer built-up welding welding rod used is the D707 welding rod of 3.2mm.
2. the welding repair method of transporter sprocket wheel according to claim 1, when it is characterized in that the bottom built-up welding described in step 3, electric welding machine DC reverse connection.
3. the welding repair method of transporter sprocket wheel according to claim 1, when it is characterized in that the transition zone built-up welding described in step 4, electric welding machine DC reverse connection.
4. the welding repair method of transporter sprocket wheel according to claim 1, when it is characterized in that the wearing layer built-up welding described in step 5, electric welding machine DC reverse connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907438.2A CN105345220A (en) | 2015-12-09 | 2015-12-09 | Welding repair method for chain wheel of conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907438.2A CN105345220A (en) | 2015-12-09 | 2015-12-09 | Welding repair method for chain wheel of conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105345220A true CN105345220A (en) | 2016-02-24 |
Family
ID=55321358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510907438.2A Pending CN105345220A (en) | 2015-12-09 | 2015-12-09 | Welding repair method for chain wheel of conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105345220A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735972A (en) * | 2017-03-25 | 2017-05-31 | 兰州理工大学 | A kind of restorative procedure of mining gipsy sheave |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2109614C1 (en) * | 1996-12-11 | 1998-04-27 | Юрий Александрович Зайченко | Method of reconditioning of driving chain sprockets |
| CA2580550A1 (en) * | 2007-02-27 | 2008-08-27 | Aubert Lavoie | Quick gear assembly |
| CN101433990A (en) * | 2008-11-19 | 2009-05-20 | 南京宝色股份公司 | Overlaying welding method of large area carbide alloy of workpiece wear layer |
| CN102248384A (en) * | 2011-04-28 | 2011-11-23 | 淮南市江淮机械电子设备制造有限公司 | Process for machining chain pit on tooth part of sprocket |
| CN102357778A (en) * | 2011-09-22 | 2012-02-22 | 宁波中超机器有限公司 | Manufacturing method of pulling straightening roller |
| CN102513776A (en) * | 2011-12-16 | 2012-06-27 | 北京工业大学 | Repair method for chain wheel of scraper conveyor |
| CN102699616A (en) * | 2012-04-14 | 2012-10-03 | 山东能源机械集团有限公司 | Mining ring driving sprocket restorative method |
| CN202784588U (en) * | 2012-02-24 | 2013-03-13 | 贵州水城煤电有限责任公司机械制造分公司 | Scraper conveyor |
| CN104827167A (en) * | 2015-05-19 | 2015-08-12 | 山东能源重型装备制造集团有限责任公司 | Reproducing method for scraper conveyor |
-
2015
- 2015-12-09 CN CN201510907438.2A patent/CN105345220A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2109614C1 (en) * | 1996-12-11 | 1998-04-27 | Юрий Александрович Зайченко | Method of reconditioning of driving chain sprockets |
| CA2580550A1 (en) * | 2007-02-27 | 2008-08-27 | Aubert Lavoie | Quick gear assembly |
| CN101433990A (en) * | 2008-11-19 | 2009-05-20 | 南京宝色股份公司 | Overlaying welding method of large area carbide alloy of workpiece wear layer |
| CN102248384A (en) * | 2011-04-28 | 2011-11-23 | 淮南市江淮机械电子设备制造有限公司 | Process for machining chain pit on tooth part of sprocket |
| CN102357778A (en) * | 2011-09-22 | 2012-02-22 | 宁波中超机器有限公司 | Manufacturing method of pulling straightening roller |
| CN102513776A (en) * | 2011-12-16 | 2012-06-27 | 北京工业大学 | Repair method for chain wheel of scraper conveyor |
| CN202784588U (en) * | 2012-02-24 | 2013-03-13 | 贵州水城煤电有限责任公司机械制造分公司 | Scraper conveyor |
| CN102699616A (en) * | 2012-04-14 | 2012-10-03 | 山东能源机械集团有限公司 | Mining ring driving sprocket restorative method |
| CN104827167A (en) * | 2015-05-19 | 2015-08-12 | 山东能源重型装备制造集团有限责任公司 | Reproducing method for scraper conveyor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735972A (en) * | 2017-03-25 | 2017-05-31 | 兰州理工大学 | A kind of restorative procedure of mining gipsy sheave |
| CN106735972B (en) * | 2017-03-25 | 2019-05-10 | 兰州理工大学 | A kind of restorative procedure of mining gipsy sheave |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103481010B (en) | A kind of full-automatic online cold welding pattching roll squeezer technique | |
| CN102619477B (en) | Wear and corrosion resistant iron-based alloy laser-cladding petroleum drill stem joint | |
| CN103464928B (en) | Argon arc cladding material based on self-fused Fe-based alloy powder | |
| CN103817414B (en) | The tungsten argon arc hot wire welding bead-welding technology of main pump motor axle and flywheel | |
| CN105436665A (en) | Surfacing reconstructed layer of large hot-rolled supporting roll Cr4 and method for repairing roll | |
| CN102699616A (en) | Mining ring driving sprocket restorative method | |
| CN102950363B (en) | Overlaying repair process for winch drum | |
| CN105312744B (en) | Middle manganese wear-resistant steel and 30MnSi chute steel gas metal-arc welding techniques | |
| CN105345220A (en) | Welding repair method for chain wheel of conveyor | |
| CN101112730A (en) | Flux-cored wire gas shielded arc welding method of abrasion-proof component | |
| CN103212920A (en) | Welding wire suitable for big hot-rolling back-up roll submerged arc overlaying welding | |
| CN102922211A (en) | Refabrication method of waste chain wheels for mining | |
| CN105522255B (en) | A kind of method that manual metal-arc welding built-up welding prepares wearable overlay | |
| CN107350713A (en) | Box body of speed reducer bearing hole technology for repairing wear | |
| CN104646860A (en) | Titanium carbide enhanced type residue-free wear-resisting surfacing flux-cored wire and preparation method thereof | |
| CN104637552A (en) | Reactor claw-link mechanism and manufacturing method thereof | |
| CN104690396A (en) | Grinding roller surfacing technology for high-chromium wear-resistant material | |
| CN103521889B (en) | A kind of removable multi-functional Full-automatic roller build-up welding machine | |
| CN102744525B (en) | Composite preparation method of high-temperature abrasion resistance inner liner | |
| CN201619268U (en) | Wear-resistant composite plate of metal part | |
| CN101774288B (en) | Wear-resistance composite board of metal machine part and repair process thereof | |
| CN101664848B (en) | Shearing blade bead weld technique of hot shearing die | |
| CN103028858B (en) | YPD55 metal abrasion resisting chain wheel surfacing electrode | |
| CN203145943U (en) | Micro-metallurgical reinforced sparkless cutting tooth | |
| CN110548945A (en) | Welding process for reamer head wrapping plate of cutter suction dredger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160224 |
|
| WD01 | Invention patent application deemed withdrawn after publication |