CN105181477A - Testing method for heat and humidity resistance of sheet metal - Google Patents
Testing method for heat and humidity resistance of sheet metal Download PDFInfo
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- CN105181477A CN105181477A CN201510507641.0A CN201510507641A CN105181477A CN 105181477 A CN105181477 A CN 105181477A CN 201510507641 A CN201510507641 A CN 201510507641A CN 105181477 A CN105181477 A CN 105181477A
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- aging performance
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- 239000002184 metal Substances 0.000 title claims abstract description 93
- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 230000007797 corrosion Effects 0.000 claims abstract description 16
- 238000005260 corrosion Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000032683 aging Effects 0.000 claims description 25
- 230000003028 elevating effect Effects 0.000 claims description 16
- 238000010998 test method Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 238000005056 compaction Methods 0.000 abstract 2
- 230000035882 stress Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a testing method for heat and humidity resistance of sheet metal. The method comprises the following steps: installation of a testing tool for heat and humidity resistance; clamping of the sheet metal: a step of superposing more than three pieces of the sheet metal, then placing the superposed sheet metal between a lower pressing plate and an upper pressing plate and allowing a lifting bar to descend so that the upper pressing plate applies a pressing force on the central part of the sheet metal; clamping of two ends of the sheet metal with fixed clamps; compaction and drawing of the sheet metal: a step of allowing two sliding plates to slide towards two sides along a vertical plate so as to realize compaction and drawing of the sheet metal; heat and humidity resistance testing; corrosion detection; etc. The method is simple to operate and has a high automation degree, and heat and humidity resistance testing data of the method can reflect the actual corrosion degree of the sheet metal.
Description
Technical field
The present invention relates to a kind of detection method of sheet metal, particularly a kind of sheet metal wet-hot aging performance method of testing.
Background technology
The continuously dip coat of resistance to fingerprint zine plate is product continuously dip coat zine plate surface being carried out to resistance to finger prints processing, mainly for the manufacture of products such as computer housing, server and household electrical appliances postnotums.Surface wet-hot aging performance is one of leading indicator weighing the continuously dip coat of resistance to fingerprint zine plate quality good or not, and object detects when coil of strip transports and stores in hygrothermal environment whether surface corrosion occurs.
At present, the conventional method detecting the continuously dip coat of resistance to fingerprint zine plate wet-hot aging performance is: be placed in climatic chamber by sheet metal monolithic to be detected or lamination, place a period of time under certain temperature and humidity after, estimate or detect surface of steel plate with color difference meter and whether turn black or produce white rust.
Continuous Hot Dip Galvanizing Line is applied with certain tension force in coil of strip coiling process, therefore after rolling transport and storage process in, steel plate is subject to tension and compressive stress two kinds of effect of stress.And suffered stress particularly tension can accelerate the corrosion of steel plate under hygrothermal environment.Due to, current wet-heat resisting pick-up unit or method, do not consider sheet metal suffered stress state when transporting and store, test hot resistance test data and can not reflect practical problems.As some sheet metal does not go wrong in wet-hot aging performance detects, but, in actual shipment and storage process, then there is the phenomenon of plate face corrosion.
Application number disclosed in 7 days Mays in 2014 is the Chinese invention patent application of 201310753357.2, disclose a kind of sheet material wet-hot aging performance detection fixture, this detection fixture comprises support, with set nut and the clamping plate of clamping screw and 8 springs of stretching.
Disclosed in 29 days September in 2014, application number is
201410512643.4chinese invention patent, the name of its innovation and creation is called " a kind of sheet metal wet-hot aging performance detection fixture ", comprise support, the first bench vice, the second bench vice and and spring tension meter, the first bench vice and the second bench vice include the spacer block of clamping plate and some pieces of energy slide anteroposterior.
Above-mentioned patented claim, when testing, can apply certain tension to sheet metal really, but, still there is following deficiency:
1. the sheet metal tension of bearing is too little or too large, test wet-heat resisting test figure also still can not reflect practical problems.
1) when the tension that sheet metal bears is too little, sheet metal is little by the impact of stress, be out of shape little, under hygrothermal environment, extent of corrosion is low, easily occur that sheet metal is no problem in wet-hot aging performance detects, it is qualified to judge, but has occurred again the phenomenon of plate face corrosion in actual shipment and storage process.
2) when the tension that sheet metal bears is too large, the impact of sheet metal stress is large, distortion is large, extent of corrosion under hygrothermal environment is fast, easily occur that sheet metal is bad in wet-hot aging performance detects, judge defective, but there will not be the corrosion of plate face in actual shipment and storage process, the phenomenon also namely reported by mistake.In order to improve the qualification rate detecting and judge, manufacturer needs again do over again or improve technological level, thus can increase the input of production or manufacturing cost.
2. structural design is unreasonable, it is very inconvenient to use: the surrounding of sheet metal is provided with set nut and clamping screw, when placing, all needs all set nuts and clamping screw all to turn at every turn, then upper laminated plank is removed, sheet metal could be placed.Then, be again placed on sheet metal to be detected by upper laminated plank, need again each set nut and clamping screw to be fixed, follow-up each operation, all needs repetition aforesaid operations.Whole complex operation, labour intensity is large, and it is very inconvenient to use.
3. in test, the snap-in force that same sheet metal bears and tensile force uneven, snap-in force is only born in position as clamped plate or bench vice clamping, tensile force is then only born in the position not being clamped plate or bench vice clamping, also namely not only snap-in force can not be born but also bear tensile force in the same position of same sheet metal, therefore can not reacting metal sheet material is stacking when placing stress, therefore test the test figure of wet-heat resisting can not the actual corrosion degree of reacting metal sheet material.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, and provide a kind of simple to operate, automaticity is high, test the sheet metal wet-hot aging performance method of testing of the actual corrosion degree of test figure energy reacting metal sheet material of wet-heat resisting.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of sheet metal wet-hot aging performance method of testing, comprises the following steps:
The first step, wet-hot aging performance detects the installation of frock: the elevating lever in elastic pressuring clamping device and base plate are fixed, and elevating lever rises, and drives upper backup pad and top board to rise; Lower supporting plate is detachable to be fixed on base plate, and the upper surface of lower supporting plate is connected with lower platen by some springs, and arranges pressure transducer at the upper surface of lower platen; Two pieces of sliding plates are slid onto the both sides of elastic pressuring clamping device, the side of the contiguous elastic pressuring clamping device of every block sliding plate connects a spring tension meter, and the other end of each spring tension meter respectively connects a geometrical clamp; Separately pressure transducer is all connected with PLC with two spring tension meters;
Second step, the clamping of sheet metal: by stacked for the sheet metal of more than three pieces, after be placed between lower platen and top board, elevating lever in the first step declines, and makes the middle part of top board to sheet metal apply a snap-in force; The two ends of sheet metal use the geometrical clamp in the first step to clamp;
3rd step, the compression of sheet metal and stretching: two pieces of sliding plates, along riser to two side slips, by sheet metal while compression, stretch;
4th step, wet-heat resisting is tested: had by clamping in second step the wet-hot aging performance of sheet metal to detect frock, put into constant temperature constant humidity baking oven, carry out wet-heat resisting experiment;
5th step, rust detection: the sheet metal completing hot resistance test is taken out from constant temperature constant humidity baking oven, and give up the superiors and undermost sheet metal, remaining sheet metal is carried out to the detection of surface corrosion.
In described 3rd step, by adjusting the sliding displacement of sliding plate, the tensile force that sheet metal bears can be adjusted; By adjusting the adjustable height of lifting column, the snap-in force that sheet metal bears can be adjusted.
In described 3rd step, the pulling force that spring tension meter detects is less than the pressure that pressure transducer detects.
Described upper backup pad, top board and lower platen are evenly provided with several air holes.
In described 4th step, wet-heat resisting experimental period is no less than 6 hours.
After the present invention adopts said method, there is following beneficial effect:
1. the use of above-mentioned spring tension meter, sliding plate can be monitored the pulling force size that sheet metal applies, therefore, the actual pulling force that sheet metal in winding process bears can be simulated, only need the pulling force size of the good required applying of preset in advance on spring tension meter, the actual pulling force that sheet metal bears can be simulated, thus test the actual corrosion degree of test figure energy reacting metal sheet material of wet-heat resisting.
2. the setting of above-mentioned elastic pressuring clamping device, can make sheet metal while compression, snap-in force size can regulate, and pressure transducer can detect the actual pressure value that sheet metal bears.By to sheet metal snap-in force size adjustment, the same position of same sheet metal can be made, snap-in force can be born, tensile force can be born again, thus can reacting metal sheet material is stacking when placing stress, therefore the test figure that institute tests wet-heat resisting be by the actual corrosion degree of energy reacting metal sheet material.
3. method design of the present invention is reasonable, and simple, convenient, automaticity is high.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of sheet metal wet-hot aging performance of the present invention detects frock;
Fig. 2 shows the left view of Fig. 1 Elastic hold down gag.
Wherein have:
1. base plate;
2. riser;
3. stretching device;
31. sliding plates; 32. spring tension meters; 33. geometrical clamps;
4. elastic pressuring clamping device;
41. elevating levers; 42. elevating control motors; 43. upper backup pads; 44. top boards; 45. lower supporting plates; 46. lower platens; 47. springs; 48. pressure transducers;
5. sheet metal.
Embodiment
Below in conjunction with accompanying drawing and concrete better embodiment, the present invention is further detailed explanation.
Below in conjunction with accompanying drawing and concrete better embodiment, the present invention is further detailed explanation.
As shown in Figure 1, a kind of sheet metal wet-hot aging performance detects frock, comprises base plate 1, the riser 2 be fixedly connected with base plate 1, elastic pressuring clamping device 3 and stretching device 4.
As shown in Figure 2, above-mentioned elastic pressuring clamping device 4 comprises elevating lever 41, upper backup pad 43, top board 44, lower supporting plate 45, lower platen 46, spring 47 and pressure transducer 48.
The bottom of above-mentioned lower supporting plate 45 and elevating lever 41 is all fixed on base plate 1, and the lifting of elevating lever 41 preferably driven by the elevating control motor 42 be arranged in base plate 1.
The upper surface of lower supporting plate 45 is connected with lower platen 46 by some springs 47, and the upper surface of lower platen 46 is provided with pressure transducer 48.
Be provided with top board 44 directly over above-mentioned lower platen 46, the upper surface of this top board 44 is connected with upper backup pad 43 by some springs 47, and upper backup pad 43 is fixedly connected with the top of elevating lever 41.
Above-mentioned upper backup pad 43, top board 44 and lower platen 46 are evenly provided with several air holes.
Above-mentioned stretching device 3 comprises two pieces of sliding plates, 31, two spring tension meters 32 and two geometrical clamps 33, two pieces of sliding plates 31 lay respectively at the both sides of elastic pressuring clamping device 4, and two pieces of sliding plates 31 are all slidably connected with riser 2, the side of the contiguous elastic pressuring clamping device 4 of every block sliding plate 31 is connected with a spring tension meter 32, the other end of each spring tension meter 32 is respectively connected with a geometrical clamp 33, each geometrical clamp 33 is all preferably elastic fixing clip, the clamping of the sheet metal 5 of different-thickness can be adapted to, highly versatile.
Further, the above-mentioned sliding plate 31 of every block all can along riser about 2 slippage, and the left and right slippage of every block sliding plate 31 driven by motor.In addition, drive the motor of two pieces of sliding plates about 31 slippages to be preferably synchronous motor, two pieces of sliding plates 31 can along in the same way or reverse sync carry out slippage.
A kind of sheet metal wet-hot aging performance method of testing, comprises the following steps:
The first step, wet-hot aging performance detects the installation of frock: the elevating lever in elastic pressuring clamping device and base plate are fixed, and elevating lever rises, and drives upper backup pad and top board to rise; Lower supporting plate is detachable to be fixed on base plate, and the upper surface of lower supporting plate is connected with lower platen by some springs, and arranges pressure transducer at the upper surface of lower platen; Two pieces of sliding plates are slid onto the both sides of elastic pressuring clamping device, the side of the contiguous elastic pressuring clamping device of every block sliding plate connects a spring tension meter, and the other end of each spring tension meter respectively connects a geometrical clamp; Separately pressure transducer is all connected with PLC with two spring tension meters;
Second step, the clamping of sheet metal: by stacked for the sheet metal of more than three pieces, after be placed between lower platen and top board, elevating lever in the first step declines, and makes the middle part of top board to sheet metal apply a snap-in force; The two ends of sheet metal use the geometrical clamp in the first step to clamp;
3rd step, the compression of sheet metal and stretching: two pieces of sliding plates, along riser to two side slips, by sheet metal while compression, stretch;
In this step, by adjusting the sliding displacement of sliding plate, the tensile force that sheet metal bears can be adjusted; By adjusting the adjustable height of lifting column, the snap-in force that sheet metal bears can be adjusted.
In addition, in this step, the pulling force that spring tension meter detects preferably is less than the pressure that pressure transducer detects, and like this, whole sheet metal can evenly bear snap-in force and tensile force.
4th step, wet-heat resisting is tested: had by clamping in second step the wet-hot aging performance of sheet metal to detect frock, put into constant temperature constant humidity baking oven, carry out wet-heat resisting experiment;
Due to upper backup pad, top board and lower platen being evenly provided with several air holes, damp-heat physical efficiency fully contacts with sheet metal, and it is more accurate to test.
Wet-heat resisting experimental period is no less than 6 hours, is preferably 8-12 hour.
5th step, rust detection: the sheet metal completing hot resistance test is taken out from constant temperature constant humidity baking oven, and give up the superiors and undermost sheet metal, remaining sheet metal is carried out to the detection of surface corrosion.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (5)
1. a sheet metal wet-hot aging performance method of testing, is characterized in that: comprise the following steps:
The first step, wet-hot aging performance detects the installation of frock: the elevating lever in elastic pressuring clamping device and base plate are fixed, and elevating lever rises, and drives upper backup pad and top board to rise; Lower supporting plate is detachable to be fixed on base plate, and the upper surface of lower supporting plate is connected with lower platen by some springs, and arranges pressure transducer at the upper surface of lower platen; Two pieces of sliding plates are slid onto the both sides of elastic pressuring clamping device, the side of the contiguous elastic pressuring clamping device of every block sliding plate connects a spring tension meter, and the other end of each spring tension meter respectively connects a geometrical clamp; Separately pressure transducer is all connected with PLC with two spring tension meters;
Second step, the clamping of sheet metal: by stacked for the sheet metal of more than three pieces, after be placed between lower platen and top board, elevating lever in the first step declines, and makes the middle part of top board to sheet metal apply a snap-in force; The two ends of sheet metal use the geometrical clamp in the first step to clamp;
3rd step, the compression of sheet metal and stretching: two pieces of sliding plates, along riser to two side slips, by sheet metal while compression, stretch;
4th step, wet-heat resisting is tested: had by clamping in second step the wet-hot aging performance of sheet metal to detect frock, put into constant temperature constant humidity baking oven, carry out wet-heat resisting experiment;
5th step, rust detection: the sheet metal completing hot resistance test is taken out from constant temperature constant humidity baking oven, and give up the superiors and undermost sheet metal, remaining sheet metal is carried out to the detection of surface corrosion.
2. sheet metal wet-hot aging performance method of testing according to claim 1, is characterized in that: in described 3rd step, by adjusting the sliding displacement of sliding plate, can adjust the tensile force that sheet metal bears; By adjusting the adjustable height of lifting column, the snap-in force that sheet metal bears can be adjusted.
3. sheet metal wet-hot aging performance method of testing according to claim 1, is characterized in that: in described 3rd step, the pulling force that spring tension meter detects is less than the pressure that pressure transducer detects.
4. sheet metal wet-hot aging performance method of testing according to claim 1, is characterized in that: described upper backup pad, top board and lower platen are evenly provided with several air holes.
5. sheet metal wet-hot aging performance method of testing according to claim 1, is characterized in that: in described 4th step, wet-heat resisting experimental period is no less than 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510507641.0A CN105181477B (en) | 2015-08-18 | 2015-08-18 | A kind of sheet metal wet-hot aging performance method of testing |
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| CN201510507641.0A CN105181477B (en) | 2015-08-18 | 2015-08-18 | A kind of sheet metal wet-hot aging performance method of testing |
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| CN105181477A true CN105181477A (en) | 2015-12-23 |
| CN105181477B CN105181477B (en) | 2017-12-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855956A (en) * | 2019-01-31 | 2019-06-07 | 北京筑之杰建筑工程检测有限责任公司 | A kind of device and its measurement method detecting wide tensile property of geosynthetics |
| CN114561855A (en) * | 2022-03-15 | 2022-05-31 | 宁波市政工程建设集团股份有限公司 | Road side stone rear prop concrete forming equipment |
| CN116879059A (en) * | 2023-06-08 | 2023-10-13 | 无锡荷雨新能源科技有限公司 | Test system and test process for research and development of anti-counterfeiting reflective film |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754085Y (en) * | 2004-11-24 | 2006-01-25 | 陈元水 | Shoe-pad compression strength detecting instrument |
| CN101832907A (en) * | 2010-05-10 | 2010-09-15 | 钢铁研究总院青岛海洋腐蚀研究所 | Stretched force-applying bracket for detecting corrosion resistance of metal and using method thereof |
| CN103776701A (en) * | 2013-12-31 | 2014-05-07 | 首钢总公司 | Clamp and method for detecting humid and heat resistance of sheet material |
| CN104198280A (en) * | 2014-09-29 | 2014-12-10 | 无锡康柏斯机械科技有限公司 | Clamp for detecting humidity resistance of sheet metal |
| CN104697873A (en) * | 2015-03-06 | 2015-06-10 | 合肥通用机械研究院 | Sulfide stress corrosion cracking testing apparatus |
-
2015
- 2015-08-18 CN CN201510507641.0A patent/CN105181477B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754085Y (en) * | 2004-11-24 | 2006-01-25 | 陈元水 | Shoe-pad compression strength detecting instrument |
| CN101832907A (en) * | 2010-05-10 | 2010-09-15 | 钢铁研究总院青岛海洋腐蚀研究所 | Stretched force-applying bracket for detecting corrosion resistance of metal and using method thereof |
| CN103776701A (en) * | 2013-12-31 | 2014-05-07 | 首钢总公司 | Clamp and method for detecting humid and heat resistance of sheet material |
| CN104198280A (en) * | 2014-09-29 | 2014-12-10 | 无锡康柏斯机械科技有限公司 | Clamp for detecting humidity resistance of sheet metal |
| CN104697873A (en) * | 2015-03-06 | 2015-06-10 | 合肥通用机械研究院 | Sulfide stress corrosion cracking testing apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855956A (en) * | 2019-01-31 | 2019-06-07 | 北京筑之杰建筑工程检测有限责任公司 | A kind of device and its measurement method detecting wide tensile property of geosynthetics |
| CN109855956B (en) * | 2019-01-31 | 2021-07-09 | 北京筑之杰建筑工程检测有限责任公司 | Device for detecting tensile property of wide strips of geosynthetics and measuring method thereof |
| CN114561855A (en) * | 2022-03-15 | 2022-05-31 | 宁波市政工程建设集团股份有限公司 | Road side stone rear prop concrete forming equipment |
| CN116879059A (en) * | 2023-06-08 | 2023-10-13 | 无锡荷雨新能源科技有限公司 | Test system and test process for research and development of anti-counterfeiting reflective film |
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| CN105181477B (en) | 2017-12-15 |
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