CN105651791A - A method of inspecting steel welding quality - Google Patents
A method of inspecting steel welding quality Download PDFInfo
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- CN105651791A CN105651791A CN201410661670.8A CN201410661670A CN105651791A CN 105651791 A CN105651791 A CN 105651791A CN 201410661670 A CN201410661670 A CN 201410661670A CN 105651791 A CN105651791 A CN 105651791A
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Abstract
A method of inspecting steel welding quality is disclosed. The method mainly comprises 1) a step of determining whether the type and the size of a welded joint meet regulations of related patterns and standards, 2) subjecting all weld seams to outer checking to determine whether unallowed defects comprising burning through, cracks, non-uniform scale heights, disconnected weld seams, exposure of craters, and undercuts the depth of which is more than 0.5 mm and the length of which is more than 15% of the length of weld seams exist or not, 3) subjecting important butt weld seams (such as cover plates and webs of a tension zone of a girder of a crane) to nondestructive inspection, with quality of the butt weld seams being not lower than quality specified in the II grade in the GB3323 during radiographic inspection, and quality of the butt weld seams being not lower than quality specified in the I grade in the JB1152 during ultrasonic inspection, and 4) designating a part to be subjected to X-ray shooting inspection through a technical department, if an unallowed defect is found through shooting, performing supplementary shooting at the extending direction or a questionable direction of the defect, and if doubt exits after the supplementary shooting, shooting the full part of each weld seam. The method can effectively reduce the reject rate and products are high in quality.
Description
Technical field
The present invention relates to the inspection method of steel welding quality.
Background technology
There is processing step phenomenon inharmonious, irrational in the inspection method of existing steel welding quality, produce re-treatment or excess processes sometimes, seriously affect quality product, and scrap rate is higher, employee's operating skill is required higher, causes product cost higher.
The inspection method processing step of existing steel welding quality is tediously long in addition, and the distribution of each operation exists many irrational places.
Summary of the invention
In order to realize the object of the present invention, the present invention provide a kind of procedure arrangement rationally, the inspection method of steel welding quality coordinated.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
An inspection method for steel welding quality, comprises the steps:
1) welding joint pattern and size should meet the regulation about pattern and standard;
2) all weld seams all should carry out outer inspection, following does not allow the defect existed to determine whether: burn, crackle, squamous height are uneven, weld seam is interrupted, expose arc crater and the degree of depth more than 0.5mm, length exceedes the undercut of welding bead length 15%;
3) important butt weld (cover plate, web such as crane girder tensile region) should carry out non-destructive test(ing)(NDT), should be not less than in GB3323 during radiographic test regulation II grade, should be not less than in JB1152 during UT (Ultrasonic Testing) regulation I grade;
4) position that X-ray film making checks is specified by technical inspection department, finds that there is the defect not allowed as taken pictures, and should do in the bearing of trend of defect or suspicious direction to supplement and take pictures, and supplements when still having suspection after taking pictures, then this weld seam should all be taken pictures;
5) for involving, with ultrasonic, the important weld seam that the methods such as X-ray carry out non-destructive test(ing)(NDT), or technical inspection department find other phenomenons think need boring examiner, then should carry out boring check; Borehole diameter must expose the transverse section (comprising the component metal of every limit 1 ~ 1.5mm) of whole weld seam, and drilling hole amount specifies by following table:
| Welding bead length (m) | ��1 | > 1 ~ 5 | > 5 ~ 10 | > 10 |
| Boring number | 1 | 2 | 3 | 5(but distance is 5m to the maximum) |
6) after boring checks, it is necessary to soldering again again after defective whole section of weld seam will be with to remove completely;Again hole after soldering inspection, but boring number should double than former regulation; After passed examination, drill hole answers soldering to fill up.
Procedure arrangement of the present invention is reasonable, coordination, it is possible to effectively reduce scrap rate and quality product height.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
An inspection method for steel welding quality, comprises the steps:
1) welding joint pattern and size should meet the regulation about pattern and standard;
2) all weld seams all should carry out outer inspection, following does not allow the defect existed to determine whether: burn, crackle, squamous height are uneven, weld seam is interrupted, expose arc crater and the degree of depth more than 0.5mm, length exceedes the undercut of welding bead length 15%;
3) important butt weld (cover plate, web such as crane girder tensile region) should carry out non-destructive test(ing)(NDT), should be not less than in GB3323 during radiographic test regulation II grade, should be not less than in JB1152 during UT (Ultrasonic Testing) regulation I grade;
4) position that X-ray film making checks is specified by technical inspection department, finds that there is the defect not allowed as taken pictures, and should do in the bearing of trend of defect or suspicious direction to supplement and take pictures, and supplements when still having suspection after taking pictures, then this weld seam should all be taken pictures;
5) for involving, with ultrasonic, the important weld seam that the methods such as X-ray carry out non-destructive test(ing)(NDT), or technical inspection department find other phenomenons think need boring examiner, then should carry out boring check; Borehole diameter must expose the transverse section (comprising the component metal of every limit 1 ~ 1.5mm) of whole weld seam, and drilling hole amount specifies by following table:
| Welding bead length (m) | ��1 | > 1 ~ 5 | > 5 ~ 10 | > 10 |
| Boring number | 1 | 2 | 3 | 5(but distance is 5m to the maximum) |
6) after boring checks, it is necessary to soldering again again after defective whole section of weld seam will be with to remove completely; Again hole after soldering inspection, but boring number should double than former regulation; After passed examination, drill hole answers soldering to fill up.
Claims (1)
1. an inspection method for steel welding quality, is characterized in that: comprise the steps:
1) welding joint pattern and size should meet the regulation about pattern and standard;
2) all weld seams all should carry out outer inspection, following does not allow the defect existed to determine whether: burn, crackle, squamous height are uneven, weld seam is interrupted, expose arc crater and the degree of depth more than 0.5mm, length exceedes the undercut of welding bead length 15%;
3) important butt weld (cover plate, web such as crane girder tensile region) should carry out non-destructive test(ing)(NDT), should be not less than in GB3323 during radiographic test regulation II grade, should be not less than in JB1152 during UT (Ultrasonic Testing) regulation I grade;
4) position that X-ray film making checks is specified by technical inspection department, finds that there is the defect not allowed as taken pictures, and should do in the bearing of trend of defect or suspicious direction to supplement and take pictures, and supplements when still having suspection after taking pictures, then this weld seam should all be taken pictures;
5) for involving, with ultrasonic, the important weld seam that the methods such as X-ray carry out non-destructive test(ing)(NDT), or technical inspection department find other phenomenons think need boring examiner, then should carry out boring check; Borehole diameter must expose the transverse section (comprising the component metal of every limit 1 ~ 1.5mm) of whole weld seam, and drilling hole amount specifies by following table:
6) after boring checks, it is necessary to soldering again again after defective whole section of weld seam will be with to remove completely; Again hole after soldering inspection, but boring number should double than former regulation; After passed examination, drill hole answers soldering to fill up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410661670.8A CN105651791A (en) | 2014-11-19 | 2014-11-19 | A method of inspecting steel welding quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410661670.8A CN105651791A (en) | 2014-11-19 | 2014-11-19 | A method of inspecting steel welding quality |
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| Publication Number | Publication Date |
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| CN105651791A true CN105651791A (en) | 2016-06-08 |
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| CN201410661670.8A Pending CN105651791A (en) | 2014-11-19 | 2014-11-19 | A method of inspecting steel welding quality |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844672A (en) * | 2018-04-26 | 2018-11-20 | 广船国际有限公司 | A kind of ship lashing eye plate pull test method |
| CN110161060A (en) * | 2018-02-14 | 2019-08-23 | 三菱重工业株式会社 | Faulted condition decision maker and faulted condition determination method |
| CN110161120A (en) * | 2019-06-13 | 2019-08-23 | 武汉国检检测技术有限公司 | A kind of bridge steel structure cross weld detection method |
| CN110823696A (en) * | 2019-11-20 | 2020-02-21 | 南京钢铁股份有限公司 | Method for quickly and accurately searching flaw detection defects of wide and thick plates |
| CN111111579A (en) * | 2020-01-08 | 2020-05-08 | 张化机（苏州）重装有限公司 | Reinforcement plate structure |
| CN115430880A (en) * | 2022-09-19 | 2022-12-06 | 青岛福晓钢结构有限公司 | Novel acceptance flow of boiler steel structure |
-
2014
- 2014-11-19 CN CN201410661670.8A patent/CN105651791A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161060A (en) * | 2018-02-14 | 2019-08-23 | 三菱重工业株式会社 | Faulted condition decision maker and faulted condition determination method |
| CN108844672A (en) * | 2018-04-26 | 2018-11-20 | 广船国际有限公司 | A kind of ship lashing eye plate pull test method |
| CN108844672B (en) * | 2018-04-26 | 2021-03-02 | 广船国际有限公司 | Ship lashing wire eye plate tension test method |
| CN110161120A (en) * | 2019-06-13 | 2019-08-23 | 武汉国检检测技术有限公司 | A kind of bridge steel structure cross weld detection method |
| CN110823696A (en) * | 2019-11-20 | 2020-02-21 | 南京钢铁股份有限公司 | Method for quickly and accurately searching flaw detection defects of wide and thick plates |
| CN111111579A (en) * | 2020-01-08 | 2020-05-08 | 张化机（苏州）重装有限公司 | Reinforcement plate structure |
| CN115430880A (en) * | 2022-09-19 | 2022-12-06 | 青岛福晓钢结构有限公司 | Novel acceptance flow of boiler steel structure |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160608 |
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| WD01 | Invention patent application deemed withdrawn after publication |