CN103760038A - Method for detecting welding quality of transformer stud - Google Patents
Method for detecting welding quality of transformer stud Download PDFInfo
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- CN103760038A CN103760038A CN201310720886.2A CN201310720886A CN103760038A CN 103760038 A CN103760038 A CN 103760038A CN 201310720886 A CN201310720886 A CN 201310720886A CN 103760038 A CN103760038 A CN 103760038A
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- screw bolt
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- nut
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Abstract
The invention relates to a method for detecting welding quality of a transformer stud, and belongs to the technical field of manufacturing quality detection of transformers. According to the technical scheme, when the welding quality of the transformer stud is detected, if the root of the detected stud has a welding channel or a weld beading, a detecting nut can not be assembled on the root of the detected stud, and a sleeve is sheathed on the detected stud; the detecting nut is assembled, and a torque spanner is utilized to detect according to the assembling torque requirements of the part at the corresponding position; the stress state of the stud and the stress state of the part in an assembling process are the same in a detecting process, the stretching resistance intensity of the stud in the axial direction is detected, and the availability of a detecting effect is fully guaranteed. The method provided by the invention has the advantages that the welding quality of the stud is fully inspected and evaluated according to a using requirement of the stud under the condition that novel inspection equipment is not added, and only the existing tool and a simple tool are adopted, the problem is found in advance and solved, thus waste of the manpower and material resources due to delay is avoided, the potential quality hazard of the product is eliminated, and an invisible economic benefit is created.
Description
Technical field
The present invention relates to a kind of transformer stud welding quality detection method, by double-screw bolt force way in simulation group parts assembling process, detect accurately, really the welding quality of double-screw bolt, fully guarantee the reliability of welding result, belong to transformer workmanship detection technique field.
Background technology
Transformer stud welding quality can be subject to various factors, and as welding current, weldingvoltage, weld interval etc., the slight deviations of any one parameter all can affect the physical strength of stud welding.If stud welding quality is unreliable, may cause on the one hand parts fixing not firm, double-screw bolt may come off on the other hand, causes foreign substance pollution device body, and consequence is very serious.At present, the stud welding quality detection method that background technology generally adopts is that moment detects, and is about to nut and is assemblied on double-screw bolt to be detected, uses torque spanner to require to detect according to the moment of this position corresponding group parts assembling.But because double-screw bolt root exists welding bead, overlap, nut cannot be assembled to double-screw bolt root, what therefore in moment testing process, verify is only double-screw bolt twisting resistance intensity along the circumferential direction, as shown in accompanying drawing 1,2.And for practical set state, requiring higher to stud welding is Tensile strength vertically, background technology detection method can not be verified the tensile strength of double-screw bolt reliably.Therefore find a kind of reasonable, reliable detection method to confirm that stud welding quality just seems particularly important.
Summary of the invention
The object of the invention is to provide a kind of transformer stud welding quality detection method, easy to operate, method is simple, without increasing any other complex detection instrument, can grasp and detect and complete Welding quality test at short notice, can meet Transformer-Manufacturing Trade stud welding quality testing requirement, solve the problem existing in background technology.
Technical scheme of the present invention is:
A kind of transformer stud welding quality detection method, comprise following steps: 1. make and detect socket wrench specially adapted for it, the internal diameter of this sleeve is greater than detected double-screw bolt external diameter, be less than and detect nut external diameter, sleeve outer diameter is greater than detection nut external diameter, the height of sleeve exposes the height of detection faces lower than detected double-screw bolt, detected double-screw bolt matches with detection nut; 2. during transformer stud Welding quality test, if detected double-screw bolt root exists welding bead, overlap, detect nut and cannot be assembled to detected double-screw bolt root, by jacket casing on detected double-screw bolt; 3. assembling detects nut, uses torque spanner to require to detect according to the moment of this position corresponding component assembling; 4. in testing process, the stress of double-screw bolt is identical with stress in actual this parts assembling process, detects the Tensile strength of its axial direction, fully guarantees the validity of testing result.
Described sleeve axial section is stepped, near the external diameter of detection faces one end, is less than near the external diameter that detects nut one end.
The present invention can find a large amount of stud welding problems in advance, assurance problem double-screw bolt advanced processing, avoid delay time at stop and wasting manpower and material resources in production assembling process, the more important thing is the hidden danger of quality of effectively having avoided in transformer later stage operational process, fully guaranteed product quality.
Good effect of the present invention: the present invention can not increase novel inspection apparatus, only utilize in the situation of existing instrument and simple frock, realization is carried out fully check assessment according to double-screw bolt request for utilization to its welding quality, pinpoint the problems in advance and process, delay time at stop, wasting manpower and material resources have been avoided, effectively eliminate product quality hidden danger, created larger stealthy economic return.
Accompanying drawing explanation
Fig. 1 is background technology detection mode vertical view;
Fig. 2 is background technology detection mode side view;
Fig. 3 is for detecting socket wrench specially adapted for it;
Fig. 4 is detection mode vertical view of the present invention;
Fig. 5 is detection mode side view of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by example, the invention will be further described.
A kind of transformer stud welding quality detection method, comprise following steps: 1. make and detect socket wrench specially adapted for it, the internal diameter of this sleeve is greater than detected double-screw bolt external diameter, be less than and detect nut external diameter, sleeve outer diameter is greater than detection nut external diameter, the height of sleeve exposes the height of detection faces lower than detected double-screw bolt, detected double-screw bolt matches with detection nut; 2. during transformer stud Welding quality test, if detected double-screw bolt root exists welding bead, overlap, detect nut and cannot be assembled to detected double-screw bolt root, by jacket casing on detected double-screw bolt; 3. assembling detects nut, uses torque spanner to require to detect according to the moment of this position corresponding component assembling; 4. in testing process, the stress of double-screw bolt is identical with stress in actual this parts assembling process, detects the Tensile strength of its axial direction, fully guarantees the validity of testing result.
Described sleeve axial section is stepped, near the external diameter of detection faces one end, is less than near the external diameter that detects nut one end.
At present, what the use of transformer stud welding technology was maximum is M6, two kinds of specification double-screw bolts of M8, double-screw bolt length range is between 30-45mm, make and detect socket wrench specially adapted for it, according to accompanying drawing 4,5 modes, jacket casing is being detected on double-screw bolt, assembling detects nut, use torque spanner according to this position to should parts the moment of assembling require to detect, like this in testing process, the stress of double-screw bolt is identical with stress in actual this parts assembling process, and main examination, along the Tensile strength of its axial direction, fully guarantees the validity of testing result.
Claims (2)
1. a transformer stud welding quality detection method, it is characterized in that comprising following steps: 1. make and detect socket wrench specially adapted for it, the internal diameter of this sleeve is greater than detected double-screw bolt external diameter, be less than and detect nut external diameter, sleeve outer diameter is greater than detection nut external diameter, the height of sleeve exposes the height of detection faces lower than detected double-screw bolt, detected double-screw bolt matches with detection nut; 2. during transformer stud Welding quality test, if detected double-screw bolt root exists welding bead, overlap, detect nut and cannot be assembled to detected double-screw bolt root, by jacket casing on detected double-screw bolt; 3. assembling detects nut, uses torque spanner to require to detect according to the moment of this position corresponding component assembling; 4. in testing process, the stress of double-screw bolt is identical with stress in actual this parts assembling process, detects the Tensile strength of its axial direction, fully guarantees the validity of testing result.
2. a kind of transformer stud welding quality detection method according to claim 1, is characterized in that described sleeve axial section is stepped, near the external diameter of detection faces one end, is less than near the external diameter that detects nut one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720886.2A CN103760038B (en) | 2013-12-24 | 2013-12-24 | A kind of detection method of transformer stud welding tensile strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720886.2A CN103760038B (en) | 2013-12-24 | 2013-12-24 | A kind of detection method of transformer stud welding tensile strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103760038A true CN103760038A (en) | 2014-04-30 |
| CN103760038B CN103760038B (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310720886.2A Expired - Fee Related CN103760038B (en) | 2013-12-24 | 2013-12-24 | A kind of detection method of transformer stud welding tensile strength |
Country Status (1)
| Country | Link |
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| CN (1) | CN103760038B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813991A (en) * | 2015-11-30 | 2017-06-09 | 湖南天雁机械有限责任公司 | Valve drive shaft welding quality detection method and its detecting tool |
| CN108717021A (en) * | 2018-03-14 | 2018-10-30 | 河海大学常州校区 | A kind of Mechanical measurement tool to arc stud welding T connector tensile strength test |
| CN110031333A (en) * | 2019-03-28 | 2019-07-19 | 福尼斯智能装备(珠海)有限公司 | A kind of workbench of automatic detection torsion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560670A (en) * | 1991-02-28 | 1993-03-12 | Yoshikawa Kaiji Kogyo Kk | Strength judgement of stud welding and device thereof |
| CN2300753Y (en) * | 1996-05-20 | 1998-12-16 | 宋春国 | Fastening screw |
| WO2007091962A1 (en) * | 2006-02-09 | 2007-08-16 | Scania Cv Ab (Publ) | Engine block durability test |
| CN101368895A (en) * | 2008-07-11 | 2009-02-18 | 奇瑞汽车股份有限公司 | Stud welding intensity detection apparatus and method |
| CN201331405Y (en) * | 2008-12-25 | 2009-10-21 | 东风汽车有限公司 | Special sleeve for detecting torque of welded nut |
| CN102323151A (en) * | 2011-08-15 | 2012-01-18 | 力帆实业(集团)股份有限公司 | Tooling for detecting welding strength of stud welding |
-
2013
- 2013-12-24 CN CN201310720886.2A patent/CN103760038B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0560670A (en) * | 1991-02-28 | 1993-03-12 | Yoshikawa Kaiji Kogyo Kk | Strength judgement of stud welding and device thereof |
| CN2300753Y (en) * | 1996-05-20 | 1998-12-16 | 宋春国 | Fastening screw |
| WO2007091962A1 (en) * | 2006-02-09 | 2007-08-16 | Scania Cv Ab (Publ) | Engine block durability test |
| CN101368895A (en) * | 2008-07-11 | 2009-02-18 | 奇瑞汽车股份有限公司 | Stud welding intensity detection apparatus and method |
| CN201331405Y (en) * | 2008-12-25 | 2009-10-21 | 东风汽车有限公司 | Special sleeve for detecting torque of welded nut |
| CN102323151A (en) * | 2011-08-15 | 2012-01-18 | 力帆实业(集团)股份有限公司 | Tooling for detecting welding strength of stud welding |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106813991A (en) * | 2015-11-30 | 2017-06-09 | 湖南天雁机械有限责任公司 | Valve drive shaft welding quality detection method and its detecting tool |
| CN108717021A (en) * | 2018-03-14 | 2018-10-30 | 河海大学常州校区 | A kind of Mechanical measurement tool to arc stud welding T connector tensile strength test |
| CN108717021B (en) * | 2018-03-14 | 2020-11-17 | 河海大学常州校区 | Mechanical measuring tool for testing tensile strength of stud welding T-shaped joint |
| CN110031333A (en) * | 2019-03-28 | 2019-07-19 | 福尼斯智能装备(珠海)有限公司 | A kind of workbench of automatic detection torsion |
| CN110031333B (en) * | 2019-03-28 | 2024-02-09 | 福尼斯智能装备(珠海)有限公司 | The method comprises the following steps of: automatic detection torsion work platform |
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| Publication number | Publication date |
|---|---|
| CN103760038B (en) | 2016-06-22 |
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Granted publication date: 20160622 Termination date: 20171224 |