CN104400182A - Production method of artificial defects of pipe circumferential welding lines - Google Patents
Production method of artificial defects of pipe circumferential welding lines Download PDFInfo
- Publication number
- CN104400182A CN104400182A CN201410508577.3A CN201410508577A CN104400182A CN 104400182 A CN104400182 A CN 104400182A CN 201410508577 A CN201410508577 A CN 201410508577A CN 104400182 A CN104400182 A CN 104400182A
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- China
- Prior art keywords
- defect
- pipeline
- welding
- preparation
- weld
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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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a production method of artificial defects of pipe circumferential welding lines. When producing unfused defects on side walls, the method comprises the following steps: (1) grooves with certain heights and lengths are formed by set depths in V-shaped, J-shaped and X-shaped groove surfaces of pipes through electrosparking; (2) welding wires are embedded by argon tungsten-arc welding; and the welded junction surfaces are polished to be consistent with original groove surfaces; and (3) after the welding of the whole welding lines is finished, the unfused defects are formed on the side walls of the pipes. The method not only can produce the defects of the pipe circumferential welding lines, but also can more precisely control the sizes of the defects of the pipe circumferential welding lines, and provides the artificial defects for the research on the full-automatic ultrasonic detection precision of the pipe circumferential welding lines.
Description
Technical field
The present invention relates to pipeline girth weld, particularly relate to a kind of preparation method of pipeline girth weld artificial defect.Belong to ocean engineering field.
Background technology
The Primary Reference file of fully-automatic supersonic inspection (AUT) certification is: the checking system certification of pipeline girth weld fully-automatic supersonic and project procedure confirm, this standard has clear and definite requirement to the quantity of various defect and feature.Arrange in view of fully-automatic supersonic checking system and focus on after rule set, relatively fixing, be representational defect to and incomplete root penetration molten with sidewall, comprise: size, position and move towards requirement stricter, therefore, the making of artificial defect will directly affect the result of certification.
At present, popular defect preparation method is: produce defect by the welding parameter such as electric current, voltage controlled in welding process, but, because this defect preparation method is difficult to the size and location controlling defect, detect certification to pipeline girth weld and bring certain difficulty.
Summary of the invention
Main purpose of the present invention is the above-mentioned shortcoming overcoming prior art existence, and a kind of preparation method of pipeline girth weld artificial defect is provided, it can not only make pipeline girth weld defect, and, size and the size of pipeline girth weld defect can also be controlled more accurately, especially in pipeline welding process, more common, yet more dangerous sidewall does not merge and the weld seam of size of incomplete root penetration defect can control especially more accurately; Artificial defect is provided for Automatic ultrasonic testing pipeline girth weld accuracy of detection have studied.
The object of the invention is to be realized by following technical scheme:
A preparation method for pipeline girth weld artificial defect, is characterized in that: when making sidewall does not merge defect, adopt following steps:
The first step: on a set depth of the groove face of the V-type of pipeline, J type and X-type, goes out to have the groove of certain altitude and length by spark machined;
Second step: used by welding wire argon tungsten-arc welding to carry out landfill, and by weld bond surface finish to consistent with former groove face;
3rd step: after completing the welding of whole road weld seam, on the sidewall of pipeline, is formed and does not merge defect;
In the described first step, the degree of depth of groove is: 5.49mm, and width is 1mm.
In described second step, welding wire is stainless steel welding stick or the saw blade being processed into certain size.
A preparation method for pipeline girth weld artificial defect, is characterized in that: when making the incomplete root penetration defect of pipeline, adopts following steps:
The first step: set an incomplete root penetration defect area at the root of pipeline;
Second step: in incomplete root penetration defect setting regions, stops by root the mode welding or polish off back cover, produces incomplete root penetration defect, after defect to be formed, has continued the welding remaining welding bead.
A kind of preparation method of pipeline girth weld artificial defect, it is characterized in that: make surface and do not merge or enter surface when not merging defect, use spark machined, directly cut along groove face at the face of weld that pipeline is complete, then carry out welding landfill then.
A preparation method for pipeline girth weld artificial defect, is characterized in that: when making pipeline porosity defect, by first ventilating in welding bead, makes protection gas lose protective effect, and then produces pore.
A preparation method for pipeline girth weld artificial defect, is characterized in that: when making pipeline inclusion defect, by put into foreign matter in welding bead after, then weld, in order to complete the making of inclusion defect.
Described foreign matter is: coating or sandstone.
Beneficial effect of the present invention: the present invention is owing to adopting technique scheme, it can not only make pipeline girth weld defect, and, size and the size of pipeline girth weld defect can also be controlled more accurately, especially in pipeline welding process, more common, yet more dangerous sidewall does not merge and the weld seam of size of incomplete root penetration defect can control especially more accurately; Artificial defect is provided for Automatic ultrasonic testing pipeline girth weld accuracy of detection have studied.
Accompanying drawing explanation
Fig. 1 is that groove face groove of the present invention cuts open schematic diagram.
Major label description in figure:
1. pipeline, 2. groove face, 3. groove.
Detailed description of the invention
As shown in Figure 1, the present invention makes sidewall when not merging defect, adopts following steps:
The first step: on a set depth of the groove face 2 of the V-type of pipeline 1, J type and X-type, goes out to have the groove 3 of certain altitude and length by spark machined; The present embodiment: the height of pipeline 1 is: 15.9mm, the degree of depth of groove 3 is: 5.49mm, and width is 1mm.
Second step: just welding wire is as: stainless steel welding stick or the saw blade being processed into certain size, uses argon tungsten-arc welding to carry out landfill, and by weld bond surface finish to consistent with former groove face;
3rd step: after completing the welding of whole road weld seam, on the sidewall of pipeline 1, is formed and does not merge defect.
When the present invention makes the incomplete root penetration defect of pipeline 1, the method for employing is:
The first step: set an incomplete root penetration defect area at the root of pipeline 1;
Second step: in incomplete root penetration defect setting regions, stops by root the mode welding or polish off back cover, produces incomplete root penetration defect, after defect to be formed, has continued the welding remaining welding bead.
The present invention makes surface and does not merge or enter surface when not merging defect, and the method for employing is:
Use spark machined directly to cut along groove face at the face of weld that pipeline 1 is complete, then, then carry out welding landfill;
When the present invention makes pipeline 1 porosity defect, the method for employing is: by first ventilating in welding bead, make protection gas lose protective effect, and then produces pore;
When the present invention makes pipeline 1 inclusion defect, the method for employing is: by put into the foreign matter such as coating or sandstone in welding bead after, then weld, thus completes the making of inclusion defect.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. a preparation method for pipeline girth weld artificial defect, is characterized in that: when making sidewall does not merge defect, adopt following steps:
The first step: on a set depth of the groove face of the V-type of pipeline, J type and X-type, goes out to have the groove of certain altitude and length by spark machined;
Second step: used by welding wire argon tungsten-arc welding to carry out landfill, and by weld bond surface finish to consistent with former groove face;
3rd step: after completing the welding of whole road weld seam, on the sidewall of pipeline, is formed and does not merge defect.
2. the preparation method of pipeline girth weld artificial defect according to claim 1, it is characterized in that: in the described first step, the degree of depth of groove is: 5.49mm, width is 1mm.
3. the preparation method of pipeline girth weld artificial defect according to claim 1, is characterized in that: in described second step, and welding wire is stainless steel welding stick or the saw blade being processed into certain size.
4. a preparation method for pipeline girth weld artificial defect, is characterized in that: when making the incomplete root penetration defect of pipeline, adopts following steps:
The first step: set an incomplete root penetration defect area at the root of pipeline;
Second step: in incomplete root penetration defect setting regions, stops by root the mode welding or polish off back cover, produces incomplete root penetration defect, after defect to be formed, has continued the welding remaining welding bead.
5. the preparation method of a pipeline girth weld artificial defect, it is characterized in that: make surface and do not merge or enter surface when not merging defect, use spark machined, directly cut along groove face at the face of weld that pipeline is complete, then carry out welding landfill then.
6. a preparation method for pipeline girth weld artificial defect, is characterized in that: when making pipeline porosity defect, by first ventilating in welding bead, makes protection gas lose protective effect, and then produces pore.
7. a preparation method for pipeline girth weld artificial defect, is characterized in that: when making pipeline inclusion defect, by put into foreign matter in welding bead after, then weld, in order to complete the making of inclusion defect.
8. the preparation method of pipeline girth weld artificial defect according to claim 7, is characterized in that: described foreign matter is: coating or sandstone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410508577.3A CN104400182A (en) | 2014-09-28 | 2014-09-28 | Production method of artificial defects of pipe circumferential welding lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410508577.3A CN104400182A (en) | 2014-09-28 | 2014-09-28 | Production method of artificial defects of pipe circumferential welding lines |
Related Child Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610168353.1A Division CN105643049A (en) | 2014-09-28 | 2014-09-28 | Manufacturing method for pipeline circumferential weld artificial defect |
| CN201610168402.1A Division CN105643133A (en) | 2014-09-28 | 2014-09-28 | Manufacturing method for pipeline circumferential weld artificial defect |
| CN201610168323.0A Division CN105643132A (en) | 2014-09-28 | 2014-09-28 | Manufacturing method for pipeline circumferential weld artificial defect |
| CN201610168467.6A Division CN105643134A (en) | 2014-09-28 | 2014-09-28 | Manufacturing method for pipeline circumferential weld artificial defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104400182A true CN104400182A (en) | 2015-03-11 |
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| CN201410508577.3A Pending CN104400182A (en) | 2014-09-28 | 2014-09-28 | Production method of artificial defects of pipe circumferential welding lines |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758937A (en) * | 2016-04-13 | 2016-07-13 | 马鞍山十七冶工程科技有限责任公司 | Method for ultrasonically detecting backing layer for pipeline argon arc welding |
| CN106053613A (en) * | 2016-08-10 | 2016-10-26 | 北京中实国金国际实验室能力验证研究有限公司 | Butt weld sample used for verifying ultrasonic nondestructive detection ability |
| CN108918219A (en) * | 2018-06-30 | 2018-11-30 | 武汉冶钢结构有限责任公司 | The preparation method of non-destructive testing with dreg defect weld seam simulating test pieces |
| CN109100428A (en) * | 2018-09-18 | 2018-12-28 | 广东核电合营有限公司 | A kind of preparation method of 3 grades of HDPE pipeline A hole defects of nuclear safety |
| CN110132665A (en) * | 2018-02-02 | 2019-08-16 | 中国电建集团山东电力建设第一工程有限公司 | A kind of production method of circular flaw test specimen |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758937A (en) * | 2016-04-13 | 2016-07-13 | 马鞍山十七冶工程科技有限责任公司 | Method for ultrasonically detecting backing layer for pipeline argon arc welding |
| CN106053613A (en) * | 2016-08-10 | 2016-10-26 | 北京中实国金国际实验室能力验证研究有限公司 | Butt weld sample used for verifying ultrasonic nondestructive detection ability |
| CN110132665A (en) * | 2018-02-02 | 2019-08-16 | 中国电建集团山东电力建设第一工程有限公司 | A kind of production method of circular flaw test specimen |
| CN108918219A (en) * | 2018-06-30 | 2018-11-30 | 武汉冶钢结构有限责任公司 | The preparation method of non-destructive testing with dreg defect weld seam simulating test pieces |
| CN109100428A (en) * | 2018-09-18 | 2018-12-28 | 广东核电合营有限公司 | A kind of preparation method of 3 grades of HDPE pipeline A hole defects of nuclear safety |
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Application publication date: 20150311 |