CN1166490C - Method of repairing defect of metallic member using embedded mending welding - Google Patents
Method of repairing defect of metallic member using embedded mending welding Download PDFInfo
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- CN1166490C CN1166490C CNB011288949A CN01128894A CN1166490C CN 1166490 C CN1166490 C CN 1166490C CN B011288949 A CNB011288949 A CN B011288949A CN 01128894 A CN01128894 A CN 01128894A CN 1166490 C CN1166490 C CN 1166490C
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Abstract
The present invention discloses a method for repairing defects of metal members by embedded mending and welding, which is characterized in that cuuting is carried out in the position of a defect (2) of a metal member (1) which needs to be welded, and then, fault detection is carried out so as to detect whether defects are cleared completely. Before welded, the metal member (1) is preheated, temperature is kept at 200 to 300DEG C, and the metal member (1) is embedded, repaired and welded by a metal embedding block (4) at the temperature; after welded, the welded member is detected, and then, relief annealing is carried out on the metal member (1). The present invention clears the defects of grooves thoroughly, and welding quantity is small. After welded, the metal member is not deformed, and stress concentration can be reduced largely. The welding strength of joints is increased, and the present invention has the characteristic of simple use methods.
Description
(1) technical field
The invention belongs to welding field, particularly a kind of restorative procedure that is used for the defective of large-scale hardware.
(2) background technology
At present, large-scale hardware is after penetrating crack (defective) or fracture occurring, and the method that normal employing is scrapped or bevel directly welds on hardware is repaired.Because the section of large-scale hardware is thicker, crackle of hardware (defective) or rift direction are different, make the preparation difficulty of bevel for welding, defective is difficult for thoroughly removing, and in welding process, make hardware local heating number of times more, groove face is filled after adopting welding rod or wire melting, and welding capacity is big.This method has following shortcoming: (1). the hardware gross distortion after the welding, even can't use: (2). a large amount of welding materials makes the hardware after the reparation form new stress and concentrates the position or cause new fracture; (3). weld grain is thick, poor toughness, weld metal embrittlement.
(3). summary of the invention
H's of the present invention, provide a kind of method that connects repairing defect of metallic member with the embedding repair welding.It can thoroughly remove the member defective, and welding capacity is little, and welding back hardware is indeformable, and stress is concentrated and can be significantly reduced, and the intensity of welding point increases, and also has the using method characteristic of simple.
For reaching above-mentioned purpose, the rejected region that the invention is characterized in the hardware that welds at needs cuts, whether carry out its defective of flaw detection then removes fully, before the welding hardware is carried out preheating, be incubated 200～300 ℃ and under this temperature, hardware is carried out the embedding repair welding and connect with the metal displacer patch, stress relief annealing is carried out to hardware then to the weldment inspection in the welding back.
The cutting spot size is according to the shape of defect area and hardware and in use the concentrated position of stress is definite.
Be provided with groove around the embedding patch, the groove root does not stay root face.The embedding patch is provided with plug welding hole and steam vent, and plug welding hole and steam vent are alternately to arrange mutually at horizontal plane.
In the position of hardware depth of section 2/3rds first embedding patch is installed, it is vertical with the cross section at its cutting position and be parallel to the surface of hardware to be installed in embedding patch in the hardware.
The surface of the weld seam of welding embedding patch must not be higher than embedding patch surface.
The present invention is owing to replace a large amount of welding materials with the embedding patch, and the defective of hardware can thoroughly be removed when carrying out machining, so welding capacity of the present invention is little, and welding back hardware is indeformable, and stress is concentrated and can be significantly reduced.The area of embedding patch can be produced arbitrarily, and the using method characteristic of simple is arranged.When selecting the material of embedding patch, in extensive range, therefore can make the intensity of welding point and toughness better than soldered mother metal.
The present invention is described further below in conjunction with accompanying drawing.
(4). description of drawings
Fig. 1 is a kind of embodiment of the present invention;
Fig. 2 is the cutting position schematic diagram to defect of metallic member;
Fig. 3 is the schematic diagram of embedding patch;
Fig. 4 is assembling of embedding patch and welding schematic diagram.
(5). the specific embodiment
Referring to Fig. 1.The elimination defective is cut with common mechanical means in defective 2 positions at the hardware 1 of needs welding.Referring to Fig. 2.Cutting position 3 sizes should according to the shape of defect area and hardware 1 and in use stress concentrate the position to determine, whether remove fully with painted or its defective of magnetic powder detection.Referring to Fig. 3.Selection intensity and toughness are done embedding patch 3 more than or equal to the metal material of soldered mother metal.Be provided with groove around the embedding patch 4, the groove root does not stay root face, and embedding patch 4 is provided with plug welding hole 5 and steam vent 6, and plug welding hole 5 and steam vent 6 are alternately to arrange mutually at its horizontal plane.Before the welding hardware 1 is carried out preheating, be incubated 200～300 ℃ and under this temperature, carry out the embedding repair welding and connect with 4 pairs of hardwares of metal displacer patch 1.Referring to Fig. 4.First embedding patch 4 installed in position at hardware 1 depth of section 2/3rds, and be indeformable to guarantee the workpiece after the reparation, and embedding patch 4 should be vertical with hardware 1 cutting cross section, position, and be parallel to the surface of hardware 1.The welding back is to the weldment inspection, the surface of the weld seam 7 of welding embedding patch 4 must not be higher than embedding patch 4 surfaces, so that second embedding patch and first embedding patch be close to, a welding that connects like this can forever be removed the defective of hardware or hardware is repaired.
Embedding patch 4 embedding repair weldings seam 7 is during as defectiveness, with the technology removal of defects of common removal of defects.
Welding finishes hardware 1 is carried out stress relief annealing.
Claims (8)
1. method that connects repairing defect of metallic member with the embedding repair welding, it is characterized in that cutting at defective (2) position of the hardware (1) of needs welding, whether carry out its defective of flaw detection then removes fully, before the welding hardware (1) is carried out preheating, be incubated 200～300 ℃ and under this temperature, hardware (1) is carried out the embedding repair welding and connect with metal displacer patch (4), stress relief annealing is carried out to hardware (1) then to the weldment inspection in the welding back.
2. according to claim 1ly connect the method for repairing defect of metallic member with the embedding repair welding, it is characterized in that cutting position (3) size according to the shape of defect area and hardware (1) and in use stress concentrate the position to determine.
3. according to claim 1ly connect the method for repairing defect of metallic member with the embedding repair welding, it is characterized in that patch (4) is provided with groove all around, the groove root does not stay root face.
4. according to claim 1ly connect the method for repairing defect of metallic member, it is characterized in that embedding patch (4) is provided with plug welding hole (5) and steam vent (6) with the embedding repair welding.
5. according to claim 4ly connect the method for repairing defect of metallic member, it is characterized in that plug welding hole (5) on the embedding patch (4) and steam vent (6) are for alternately arranging mutually at horizontal plane with the embedding repair welding.
6. according to claim 1ly connect the method for repairing defect of metallic member, it is characterized in that first embedding patch (4) being installed in the position of hardware (1) depth of section 2/3rds with the embedding repair welding.
7. according to claim 1ly connect the method for repairing defect of metallic member with the embedding repair welding, it is vertical with the cross section at its cutting position and be parallel to the surface of hardware (1) to it is characterized in that being installed in embedding patch (4) in the hardware (1).
8. according to claim 4ly connect the method for repairing defect of metallic member with the embedding repair welding, the surface that it is characterized in that welding the weld seam (7) of embedding patch (4) must not be higher than embedding patch (4) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011288949A CN1166490C (en) | 2001-09-21 | 2001-09-21 | Method of repairing defect of metallic member using embedded mending welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011288949A CN1166490C (en) | 2001-09-21 | 2001-09-21 | Method of repairing defect of metallic member using embedded mending welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1410222A CN1410222A (en) | 2003-04-16 |
| CN1166490C true CN1166490C (en) | 2004-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011288949A Expired - Fee Related CN1166490C (en) | 2001-09-21 | 2001-09-21 | Method of repairing defect of metallic member using embedded mending welding |
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| CN (1) | CN1166490C (en) |
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| DE102008019636A1 (en) * | 2008-04-18 | 2009-10-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Welded component and method for producing a weld |
| CN101982287B (en) * | 2010-10-09 | 2011-09-28 | 中广核工程有限公司 | Automatic welding method of nuclear island main pipes |
| CN102950444B (en) * | 2011-08-19 | 2015-09-23 | 中国石油天然气股份有限公司 | A kind of spiral pipeline weld defect processing and fabricating method |
| CN102528349B (en) * | 2012-01-17 | 2015-03-04 | 山东电力研究院 | Method for positioning center of pipe hole during crack repair of pipe hole on pressure pipeline or header of boiler |
| CN103817439B (en) * | 2014-03-13 | 2017-01-11 | 机械科学研究院哈尔滨焊接研究所 | Prefabricated welding material laser welding method capable of obviously improving joint tissue and stress state |
| CN103962740A (en) * | 2014-04-23 | 2014-08-06 | 哈尔滨飞机工业集团有限责任公司 | Cr13 steel crack welding method |
| CN104646910A (en) * | 2014-06-14 | 2015-05-27 | 卢丽 | Pressing roller shaft journal abrasion repairing method |
| CN104493422A (en) * | 2014-12-29 | 2015-04-08 | 北京钢研高纳科技股份有限公司 | Defect repair method of high-temperature alloy casting |
| CN106216939B (en) * | 2016-08-29 | 2018-07-24 | 甘肃东兴铝业有限公司 | A kind of pot tending machine cleaning blade grab bucket restorative procedure |
| CN107570956A (en) * | 2017-08-09 | 2018-01-12 | 中车青岛四方机车车辆股份有限公司 | A kind of deep hole repair welding method |
| CN107433423B (en) * | 2017-09-18 | 2019-10-08 | 沈阳飞机工业（集团）有限公司 | Digging electronics beam scanning repair method |
| CN108941949B (en) * | 2018-08-23 | 2020-09-29 | 哈尔滨工业大学 | Welding method for reducing field welding stress deformation of thick-wall steel structure |
| JP7325194B2 (en) * | 2019-02-19 | 2023-08-14 | 三菱重工業株式会社 | Welded product manufacturing method, welded product manufacturing system, and welded product |
| CN110125619B (en) * | 2019-05-16 | 2020-11-13 | 沈阳飞机工业（集团）有限公司 | Electron beam welding repair method for large-thickness titanium alloy I-shaped welding part |
| CN110434468A (en) * | 2019-06-28 | 2019-11-12 | 武汉船用机械有限责任公司 | The repair method of copper alloy guide rail |
| CN110253207B9 (en) * | 2019-07-17 | 2021-01-08 | 孙京钢 | Method for repairing cracks of coiling drum of coiling furnace |
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2001
- 2001-09-21 CN CNB011288949A patent/CN1166490C/en not_active Expired - Fee Related
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Granted publication date: 20040915 Termination date: 20100921 |