CN105817833A - Repairing method for electric shovel bucket - Google Patents
Repairing method for electric shovel bucket Download PDFInfo
- Publication number
- CN105817833A CN105817833A CN201610224408.6A CN201610224408A CN105817833A CN 105817833 A CN105817833 A CN 105817833A CN 201610224408 A CN201610224408 A CN 201610224408A CN 105817833 A CN105817833 A CN 105817833A
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- CN
- China
- Prior art keywords
- welding
- repaired
- welded
- repairing
- scraper bowl
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
Abstract
The invention discloses a repairing method for an electric shovel bucket. The repairing method includes the following steps that firstly, a part to be repaired is checked, and sludge, oil dirt and rust at the part to be repaired are removed; secondly, a welding shielded metal arc welding method is used for repairing, and a welding rod is baked at the high temperature ranging from 300 DEG C to 350 DEG C; thirdly, a welded part is baked before welding is started, and the preheating temperature is controlled to range from 140 DEG C to 160 DEG C; fourthly, welding repair is conducted on the part to be repaired, segmented skip welding and staggered welding are conducted for welding when a first transition layer is welded; fifthly, the first transition layer is welded in a segmented manner, and after a welding bead is cooled to be lower than 100 DEG C, a next segment is welded; sixthly, after a first layer of transition weld joint is welded, continuous welding can be conducted from a second layer of weld joint, and the interlayer temperature of welding is controlled to be below 200 DEG C; and seventhly, checking is conducted, and the electric shovel bucket can be used after being qualified. The abraded electric shovel bucket is reasonably repaired, the service life of the electric shovel bucket is prolonged, and the repairing method is worthy of being used and popularized in some enterprises poor in welding equipment and welding condition.
Description
Technical field
The present invention relates to power shovel field, be specifically related to a kind of power shovel scraper bowl method for repairing and mending.
Background technology
Power shovel is one of capital equipment of opencast mining, can be used to the stripping of table soil, heap abandons (or reprint) and the work of the item such as the digging of mineral and shipment.The excavation of Ore, shovel dress and hauling operation is cooperatively completed with large-scale mine automobile.Power shovel scraper bowl is the main working parts of power shovel, and the excavation of annual millions of tons of Ores and scraper will be completed by power shovel bucket.In operation process, scraper bowl is by the impact of material and strong wear, general scraper bowl uses 23 years, at scraper bowl inner surface with regard to serious abrasion, it has been investigated that, for handling building stones power shovel scraper bowl in life-time service, the bucket body of nearly sluice gate side, teeth face can be by more serious abrasion, need it is changed, cause huge economic loss to enterprise.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of power shovel scraper bowl method for repairing and mending, and the power shovel scraper bowl after abrasion can reasonably be repaired by the method so that the scraper bowl after repairing is without changing, it is possible to be continuing with, and reduces loss for enterprise.
The purpose of the present invention implements by the following technical programs:
A kind of power shovel scraper bowl method for repairing and mending, comprises the following steps:
1) place to be repaired is checked, the cleaning dirt of mend, grease and rust, for having aliquation, crackle, burning into sand, the defect of pore agent shrinkage cavity, root out with emery wheel or air-arc cutting, meanwhile, position electric angle grinder to be repaired is ground off hardened layer；
2) using the method for welding electrode arc welding to repair, bakeed 1 hour through 300-350 DEG C of high temperature by welding rod, welding rod is placed in heat-preservation cylinder after bakeing, with for；
3) playing the front gas cutter of weldering to toast welding position, in order to removal of contamination further, also carry out weld preheating to welding position simultaneously, to improve the numerical value of t8/5, preheating temperature controls at 140 DEG C-160 DEG C；
4) treat mend and carry out repair by welding, the welding segmentation skip welding when welding ground floor transition zone, staggered welding, use short arc, string(er) bead multilayer welding, the joint of per pass weld seam mutually to stagger；
5) ground floor transition zone welding segmentation welding, one section of welding stops weldering, thoroughly removes welding slag, and carry out hammering welding bead, after waiting welding bead to be cooled to less than 100 DEG C, then weld next section, to eliminate thermal stress and to prevent Carbide Precipitation after completing；
6) after being soldered ground floor transition weld seam, from second layer weld seam start can continuous sequence, the interlayer temperature of welding controls below 200 DEG C, to reduce the time of staying in sensitive temperature district, prevent converted steel produce reheat crack(ing)；
7), after having welded, first butt welded seam wire brush carries out removing surface, is cleared out totally by the splash on weldment surface；Finished product after welding being completed places three days, with the naked eye and magnifier butt welded seam and welding heat affected zone outward appearance check, qualified after use.
Further, using small area analysis and short arc welding during welding, electric current Application Range is 90-110A.
Further, described welding rod uses A132 welding rod.
One power shovel scraper bowl method for repairing and mending of the present invention, in the environment of welding equipment and welding condition difference, preferably solve the crack problem that the welding of big thickness abrasion-resistant stee produces, power shovel scraper bowl after abrasion is reasonably repaired so that the scraper bowl after repairing is without changing, it is possible to be continuing with, and it is the most respond well, reduce loss for enterprise, extend the service life of power shovel scraper bowl, be worth the enterprise at some welding equipments and welding condition difference to promote the use of.
Detailed description of the invention
A kind of power shovel scraper bowl method for repairing and mending described in the embodiment of the present invention, comprises the following steps:
1) place to be repaired is checked, the cleaning dirt of mend, grease and rust, for having aliquation, crackle, burning into sand, the defect of pore agent shrinkage cavity, root out with emery wheel or air-arc cutting, meanwhile, position electric angle grinder to be repaired is ground off hardened layer；Because the metal of hardened layer is the most sensitive to crackle, wants rounding off or be polishing to the inclined-plane seamlessly transitted during the transition face simultaneously will polished between wear surface and parent, and metallic luster is exposed in 10mm scope polishing around abrading section；
2) method of welding electrode arc welding is used to repair, fuse smaller during due to SMAW, and flexible operation, do not limited by weldment shape and position, so, the scraper bowl using the welding field work of this welding method is the most suitable, welding rod arbitrary value high temperature between 300-350 DEG C is bakeed 1 hour, including 300 DEG C and 350 DEG C of two end values, welding rod is placed in heat-preservation cylinder after bakeing, with for；
3) play weldering front gas cutter welding position is toasted, so as removal of contamination further, also carry out weld preheating to welding position simultaneously, to improve the numerical value of t8/5, preheating temperature controls the arbitrary value between 140 DEG C-160 DEG C, including 140 DEG C, 160 DEG C of two end values, described t8/5 is the cool time that converted steel does not produce cold crack；
4) treat mend and carry out repair by welding, the welding segmentation skip welding when welding ground floor transition zone, staggered welding, use short arc, string(er) bead multilayer welding, the joint of per pass weld seam mutually to stagger；
5) ground floor transition zone welding segmentation welding, one section of welding stops weldering, thoroughly removes welding slag, and carry out hammering welding bead, after waiting welding bead to be cooled to less than 100 DEG C, then weld next section, to eliminate thermal stress and to prevent Carbide Precipitation after completing；
6) after being soldered ground floor transition weld seam, from second layer weld seam start can continuous sequence, the interlayer temperature of welding controls below 200 DEG C, to reduce the time of staying in sensitive temperature district, prevent converted steel produce reheat crack(ing)；
7), after having welded, first butt welded seam wire brush carries out removing surface, is cleared out totally by the splash on weldment surface；Finished product after welding being completed places three days, with the naked eye and magnifier butt welded seam and welding heat affected zone outward appearance check, qualified after use.
Preferably, using small area analysis and short arc welding during welding, electric current Application Range is the arbitrary value between 90-110A, including 90A, 110A endpoints thereof.
In order to be able to utilize existing plant, efficiently control welding cold cracking and weld seam peeling, it is contemplated that during converted steel welding, due to precipitation and the impact of shrinkage stress of carbide, and prevent weld seam from having bigger hot cracking tendency, preferably, welding rod uses A132 welding rod, a diameter of φ 3.2mm.
One power shovel scraper bowl method for repairing and mending of the present invention, in the environment of welding equipment and welding condition difference, preferably solve the crack problem that the welding of big thickness abrasion-resistant stee produces, power shovel scraper bowl after abrasion is reasonably repaired so that the scraper bowl after repairing is without changing, it is possible to be continuing with, and it is the most respond well, reduce loss for enterprise, extend the service life of power shovel scraper bowl, be worth the enterprise at some welding equipments and welding condition difference to promote the use of.
Last it is noted that the foregoing is only the preferred embodiments of the present invention; it is not limited to the present invention; for a person skilled in the art; technical scheme described in foregoing embodiments still can be adjusted by it; or wherein portion of techniques feature is carried out equivalent; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (3)
1. a power shovel scraper bowl method for repairing and mending, it is characterised in that comprise the following steps:
1) place to be repaired is checked, the cleaning dirt of mend, grease and rust, for having aliquation, crackle, burning into sand, the defect of pore agent shrinkage cavity, root out with emery wheel or air-arc cutting, meanwhile, position electric angle grinder to be repaired is ground off hardened layer；
2) using the method for welding electrode arc welding to repair, bakeed 1 hour through 300-350 DEG C of high temperature by welding rod, welding rod is placed in heat-preservation cylinder after bakeing, with for；
3) playing the front gas cutter of weldering to toast welding position, in order to removal of contamination further, also carry out weld preheating to welding position simultaneously, to improve the numerical value of t8/5, preheating temperature controls at 140 DEG C-160 DEG C；
4) treat mend and carry out repair by welding, the welding segmentation skip welding when welding ground floor transition zone, staggered welding, use short arc, string(er) bead multilayer welding, the joint of per pass weld seam mutually to stagger；
5) ground floor transition zone welding segmentation welding, one section of welding stops weldering, thoroughly removes welding slag, and carry out hammering welding bead, after waiting welding bead to be cooled to less than 100 DEG C, then weld next section, to eliminate thermal stress and to prevent Carbide Precipitation after completing；
6) after being soldered ground floor transition weld seam, from second layer weld seam start can continuous sequence, the interlayer temperature of welding controls below 200 DEG C, to reduce the time of staying in sensitive temperature district, prevent converted steel produce reheat crack(ing)；
7), after having welded, first butt welded seam wire brush carries out removing surface, is cleared out totally by the splash on weldment surface；Finished product after welding being completed places three days, with the naked eye and magnifier butt welded seam and welding heat affected zone outward appearance check, qualified after install and use.
A kind of power shovel scraper bowl method for repairing and mending the most according to claim 1, it is characterised in that: using small area analysis and short arc welding during welding, electric current Application Range is 90-110A.
A kind of power shovel scraper bowl method for repairing and mending the most according to claim 1, it is characterised in that: described welding rod uses A132 welding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224408.6A CN105817833A (en) | 2016-04-12 | 2016-04-12 | Repairing method for electric shovel bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224408.6A CN105817833A (en) | 2016-04-12 | 2016-04-12 | Repairing method for electric shovel bucket |
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| Publication Number | Publication Date |
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| CN105817833A true CN105817833A (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224408.6A Pending CN105817833A (en) | 2016-04-12 | 2016-04-12 | Repairing method for electric shovel bucket |
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| CN (1) | CN105817833A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798674A (en) * | 2018-06-19 | 2018-11-13 | 方晓妹 | Power shovel endoporus is worn the repair apparatus of branch wheel |
| CN109570807A (en) * | 2019-01-03 | 2019-04-05 | 上海江南船舶管业有限公司 | Precision component welding procedure |
| 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 |
Citations (3)
| 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 |
| US20120030147A1 (en) * | 2010-07-28 | 2012-02-02 | Zeno Joseph R | Monolithic floor for hot slag bucket |
| CN104858609A (en) * | 2015-05-11 | 2015-08-26 | 南京梅山冶金发展有限公司 | Repairing method for blade of carry-scraper bucket |
-
2016
- 2016-04-12 CN CN201610224408.6A patent/CN105817833A/en active Pending
Patent Citations (3)
| 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 |
| US20120030147A1 (en) * | 2010-07-28 | 2012-02-02 | Zeno Joseph R | Monolithic floor for hot slag bucket |
| CN104858609A (en) * | 2015-05-11 | 2015-08-26 | 南京梅山冶金发展有限公司 | Repairing method for blade of carry-scraper bucket |
Non-Patent Citations (4)
| Title |
|---|
| 伍广文: "PC-600反铲铲斗修复工艺", 《2012年海南省机械工程学会论文集》 * |
| 张登军等: "WK-20铲斗焊接修复工艺", 《露天采矿技术》 * |
| 李密等: "矿山WK-2M3电铲铲斗修补焊探讨", 《第五届广西青年学术年会论文集-自然科学篇》 * |
| 闫明等: "395B铲斗侧壁开裂焊接修复工艺的探讨", 《露天采矿技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798674A (en) * | 2018-06-19 | 2018-11-13 | 方晓妹 | Power shovel endoporus is worn the repair apparatus of branch wheel |
| CN109570807A (en) * | 2019-01-03 | 2019-04-05 | 上海江南船舶管业有限公司 | Precision component welding procedure |
| 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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Application publication date: 20160803 |
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