CN103115867A - Detection method for plated layer stripping of alloyed zinc-plated plate - Google Patents
Detection method for plated layer stripping of alloyed zinc-plated plate Download PDFInfo
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- CN103115867A CN103115867A CN2013100273964A CN201310027396A CN103115867A CN 103115867 A CN103115867 A CN 103115867A CN 2013100273964 A CN2013100273964 A CN 2013100273964A CN 201310027396 A CN201310027396 A CN 201310027396A CN 103115867 A CN103115867 A CN 103115867A
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Abstract
The invention provides a detection method for plated layer stripping of an alloyed zinc-plated plate and belongs to the technical field of zinc-plated plate detection. The detection method comprises the following steps of: washing a machined alloyed zinc-plated plate and a supporting body material with the same thickness as the plate by using acetone and an alcohol solution, and drying; sticking a test sample by utilizing epoxy resin glue to to form an overlapped test sample; fixing the cured overlapped test sample on a stretching tester by using a clamp; carrying out stretching until an overlapped part is snapped; obtaining the greatest stripping force when the plated layer is snapped by utilizing a sensing device of the stretching tester; and finally, evaluating the plated layer stripping degree of the alloyed zinc-plated plate. The detection method disclosed by the invention has the advantages of simplicity in operation and low cost, can rapidly and accurately detect the stripping degree of plated layers of the alloyed zinc-plated plates including a car plate, a household appliance plate and the like, and is suitable for wide application of industries.
Description
Technical field
The invention belongs to galvanized sheet detection technique field.Be particularly related to the detection method that a kind of alloying galvanizing plate coating is peeled off.
Background technology
Alloying galvanizing plate has weldability and the good advantage of japanning property than heat zinc coating plate, and is lower than electrolytic galvanized sheet cost, has been widely used in Automobile Plate and appliance plate.Alloying galvanizing plate is most widely used at present, one of kind with fastest developing speed.
But in stamping process, the easy slabbing of coating or powdery peel off, and form to peel off defective.The presentation quality of product had reduced the corrosion resistance of car body after this not only affected and is shaped, and the zinc powder that peels off or zinc bits accumulate in mould, had aggravated the friction between workpiece and mould, affected the mold use life-span, and had increased the cleaning process of mould.
At present, it is few to retrieve the Research Literature of peeling off the detection method aspect both at home and abroad.Result for retrieval shows: the stripping performance that the method mensuration coating of unidirectional overlap joint is abroad arranged, but the employed specimen size specification of the method, rate of extension, overlap joint area, use the equal disunities of test condition such as the kind of cohering glue and intensity, after peeling off sometimes stripping area be in the transition state of a kind of efflorescence → peel off, fail to reflect truly the situation of peeling off of coating.And domesticly have Baosteel to apply for a patent the only applicable thick plate tensile sample of 3mm that is not less than of CN1415950A " method for quantitative measuring of coated layer on surface of material and basal body binding force and device ", for at present less than the thick alloying galvanizing plate of 3mm, the scope of application is limited, and needs to use special stripping off device.Also having in addition the Xu Chun of Shanghai Institute Of Technology to apply for a patent CN101008607A " hot galvanizing sheet is peeled off and the peel test force device " also needs to use complicated stripping off device to test.Existing test method ubiquity the problems such as complicated operation, experimentation cost height.
In view of the above problems, providing a kind of method that quick and precisely detects the coating stripping performance in the performance history of alloying galvanizing plate production and new product, is very important.
Summary of the invention
The detection method that the object of the present invention is to provide a kind of alloying galvanizing plate coating to peel off.It is high and fail truly to reflect the problem such as coating extent of exfoliation to have solved traditional means of experiment complicated operation, experimentation cost.
For solving the problems of the technologies described above, concrete steps are as follows:
1, sample preparation: 100～130 mm length * 25mm that will process are wide * alloying galvanizing plate of former thickness of slab and with wide support body material 1 usefulness the acetone of 25～50mm length * 25mm of thickness of slab and alcoholic solution cleaning drying also, it is bonding to carry out sample with epoxy resin glue, form overlap joint sample 5, the lap of splice is 5～20mm, and guarantees that the length of 3 of the fixed area 2 of overlap joint sample 5 and bonding regions is 63～65mm.And then will overlap sample 5 curing processing, normal temperature cure was processed 24～72 hours or was heating and curing and processed 0.5～4 hour.
2, alloying galvanizing plate coating is peeled off: the overlap joint sample 5 usefulness anchor clamps 4 that will be cured are fixed on the cupping machine 6, and stretch with the speed of 0.5～5 mm/min, until lap-joint is broken;
3, the coating extent of exfoliation of alloying galvanizing plate is estimated: the maximum peeling force when utilizing the sensing device of cupping machine 6 to obtain coating to break calculates the anti-shear resistance value of peeling off of coating according to maximum peeling force/overlap joint area again; The coating extent of exfoliation of last comprehensive evaluation alloying galvanizing plate.
The invention has the advantages that: overcome the deficiencies in the prior art, realized the true sign that alloying galvanizing plate coating is peeled off.The method is simple to operate, cost is low, is suitable for industrial widespread use.Coating is close to only being subjected to the shearing force effect when guaranteeing one directional tensile test, and do not have normal stress, proposed the new method of overlap joint sample two ends binding supporting materials.
Description of drawings
Fig. 1 is alloying galvanizing plate overlap joint sample side view.Wherein, support body material 1, fixed area 2, bonding region 3.
Fig. 2 is alloying galvanizing plate overlap joint sample vertical view.Wherein, fixed area 2, bonding region 3.
Fig. 3 is alloying galvanizing plate stripping process synoptic diagram.Wherein, anchor clamps 4, overlap joint sample 5, cupping machine 6.
Fig. 4 is that the coating that the thick alloying galvanizing plate lap of splice of 0.6 mm is 5mm is peeled off rear shape appearance figure.
Fig. 5 is that the coating that the thick alloying galvanizing plate lap of splice of 0.6 mm is 10mm is peeled off rear shape appearance figure.
Fig. 6 is that the coating that the thick alloying galvanizing plate lap of splice of 0.6 mm is 20mm is peeled off rear shape appearance figure.
Fig. 7 is that the coating that the thick alloying galvanizing plate lap of splice of 1.2mm is 5mm is peeled off rear shape appearance figure.
Fig. 8 is that the coating that the thick alloying galvanizing plate lap of splice of 1.2mm is 10mm is peeled off rear shape appearance figure.
Fig. 9 is that the coating that the thick alloying galvanizing plate lap of splice of 1.2mm is 20mm is peeled off rear shape appearance figure.
Figure 10 is the graph of a relation of the lap of splice and shear resistance.
Embodiment
Selecting the thick DX53D-ZF alloying galvanizing plate of 0.6mm is test material.The concrete step is as follows:
1. sample preparation: the 100mm length * wide 25mm that processes * thick alloying galvanizing plate of 0.6 mm and the thick support body material 1 usefulness acetone of 25mm length * 25mm * 0.6 mm and alcoholic solution are cleaned up also drying; Be the epoxy resin glue of 31Mpa with the shear resistance value, be ready to as depicted in figs. 1 and 2 overlap the sample 5(lap of splice and be respectively 5mm, 10mm and 20mm), and will overlap sample 5 normal temperature cures and process 72 hours.
2. alloying galvanizing plate coating is peeled off: the overlap joint sample 5 that will be cured is fixed on the cupping machine 6 with anchor clamps 4 as shown in Figure 3, and stretches with the speed of 1.5 mm/min, until lap-joint is broken.
3. the coating extent of exfoliation of alloying galvanizing plate is estimated: the maximum peeling force when utilizing the sensing device of cupping machine 6 to obtain coating to break, and then can be calculated the anti-shear resistance value of peeling off of coating according to maximum peeling force/overlap joint area; The last again coating extent of exfoliation of comprehensive evaluation alloying galvanizing plate.The pattern after 0.6mm the coating of thick alloying galvanizing plate is peeled off such as Fig. 3～shown in Figure 6.By finding out among Fig. 3～Fig. 6: when the alloying galvanizing plate lap of splice that 0.6mm is thick was 5mm, only a small amount of ζ on top layer was peeled off, was in efflorescence and peeled off coexisting state, and the shear resistance value of coating is 9 MPa; When the lap of splice was 10mm, the coating regional area was peeled off fully from steel matrix, and the shear resistance value of coating is 14 MPa; When the lap of splice was 20mm, coating was peeled off by the bulk perk along steel matrix, and this moment, the shear resistance value of coating was 16 MPa.
Selecting the thick DX53D-ZF alloying galvanizing plate of 1.2mm is test material.The concrete step is as follows:
1. sample preparation: the 100mm length * wide 25mm that processes * thick alloying galvanizing plate of 1.2 mm and the thick support body material 1 usefulness acetone of 25mm length * 25mm * 1.2 mm and alcoholic solution are cleaned up also drying; Be the epoxy resin glue of 31Mpa with the shear resistance value, be ready to as depicted in figs. 1 and 2 overlap the sample 5(lap of splice and be respectively 5mm, 10mm and 20mm), and will overlap sample 5 normal temperature cures and process 72 hours.
2. alloying galvanizing plate coating is peeled off: the overlap joint sample 5 that will be cured is fixed on the cupping machine 6 with anchor clamps 4 as shown in Figure 3, and stretches with the speed of 1.5 mm/min, until lap-joint is broken.
3. the coating extent of exfoliation of alloying galvanizing plate is estimated: the maximum peeling force when utilizing the sensing device of cupping machine 6 to obtain coating to break, and then can be calculated the anti-shear resistance value of peeling off of coating according to maximum peeling force/overlap joint area; The last again coating extent of exfoliation of comprehensive evaluation alloying galvanizing plate.The pattern after 1.2mm the coating of thick alloying galvanizing plate is peeled off such as Fig. 7～shown in Figure 9.By finding out among Fig. 7～Fig. 9: when the alloying galvanizing plate lap of splice that 1.2mm is thick was 5mm, only a small amount of ζ on top layer was peeled off, was in efflorescence and peeled off coexisting state, and the shear resistance value of coating is 17 MPa; When the lap of splice was 10mm, the coating regional area was peeled off fully from steel matrix, and the shear resistance value of coating is 25MPa; When the lap of splice was 20mm, coating almost completely was stripped from from steel matrix, and this moment, the shear resistance value of coating was 28MPa.In addition by also finding out among Figure 10: along with the lap of splice increases, the apparent shear resistance value of coating increases thereupon; When the lap of splice during in the 15mm left and right sides, the shear resistance of coating is tending towards saturated; The alloying galvanizing plate coating of two kinds of thickness specifications shows, and to peel off rule identical.
Claims (2)
1. detection method that alloying galvanizing plate coating is peeled off, it is characterized in that: concrete steps and parameter are as follows:
1) sample preparation: 100～130 mm length * 25mm that will process are wide * alloying galvanizing plate of former thickness of slab and clean also drying with acetone and alcoholic solution with the wide support body material of 25～50mm length * 25mm (1) of thickness of slab, it is bonding to carry out sample with epoxy resin glue, form overlap joint sample (5), the lap of splice is 5～20mm, and the fixed area (2) of overlap joint sample (5) and the length between bonding region (3) are 63～65mm; To overlap again sample (5) and solidify processing;
2) alloying galvanizing plate coating is peeled off: the overlap joint sample (5) that will be cured is fixed on the cupping machine (6) with anchor clamps (4), stretches with the speed of 0.5～5 mm/min, until lap-joint is broken;
3) the coating extent of exfoliation of alloying galvanizing plate is estimated: the maximum peeling force when utilizing the sensing device of cupping machine (6) to obtain coating to break calculates the anti-shear resistance value of peeling off of coating with maximum peeling force/overlap joint area; Estimate at last the coating extent of exfoliation of alloying galvanizing plate.
2. method according to claim 1 is characterized in that, the curing described in the step 1) is treated to normal temperature cure processing 24～72 hours or is heating and curing and processed 0.5～4 hour.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI472646B (en) * | 2013-12-09 | 2015-02-11 | China Steel Corp | Rapid identification of defective sources of hot dip galvanized products |
| CN105004588A (en) * | 2015-07-10 | 2015-10-28 | 首钢总公司 | Alloy-galvanized layer scanning electron microscope sectioned sample precision making method |
| CN105606465A (en) * | 2016-03-07 | 2016-05-25 | 吉林大学 | Adhesive peeling test device and method considering shear load influence |
| CN109580477A (en) * | 2018-11-14 | 2019-04-05 | 中航复合材料有限责任公司 | A kind of automatic placement splices the detection method of intensity with prepreg |
| CN109975205A (en) * | 2018-11-30 | 2019-07-05 | 北京空天技术研究所 | A kind of adhesive asserably performance estimating method |
| CN110057692A (en) * | 2019-05-27 | 2019-07-26 | 中南大学 | A kind of agglomeration for iron mine Binder Phase adhesion strength measuring method |
| CN110146364A (en) * | 2019-06-27 | 2019-08-20 | 华北理工大学 | A kind of evaluation method of metal hot dipping fluxing agent |
| CN112082940A (en) * | 2020-09-02 | 2020-12-15 | 山东司莱美克新材料科技有限公司 | Method for testing bonding force pull-off of ceramic plate |
| CN113008657A (en) * | 2019-12-20 | 2021-06-22 | 中核北方核燃料元件有限公司 | Tensile sample for evaluating strength of lap weld of reactor assembly |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI472646B (en) * | 2013-12-09 | 2015-02-11 | China Steel Corp | Rapid identification of defective sources of hot dip galvanized products |
| CN105004588A (en) * | 2015-07-10 | 2015-10-28 | 首钢总公司 | Alloy-galvanized layer scanning electron microscope sectioned sample precision making method |
| CN105606465A (en) * | 2016-03-07 | 2016-05-25 | 吉林大学 | Adhesive peeling test device and method considering shear load influence |
| CN105606465B (en) * | 2016-03-07 | 2017-02-08 | 吉林大学 | Adhesive peeling test device and method considering shear load influence |
| CN109580477A (en) * | 2018-11-14 | 2019-04-05 | 中航复合材料有限责任公司 | A kind of automatic placement splices the detection method of intensity with prepreg |
| CN109975205B (en) * | 2018-11-30 | 2022-07-15 | 北京空天技术研究所 | Method for evaluating bonding assembly performance |
| CN109975205A (en) * | 2018-11-30 | 2019-07-05 | 北京空天技术研究所 | A kind of adhesive asserably performance estimating method |
| CN110057692A (en) * | 2019-05-27 | 2019-07-26 | 中南大学 | A kind of agglomeration for iron mine Binder Phase adhesion strength measuring method |
| CN110057692B (en) * | 2019-05-27 | 2021-06-25 | 中南大学 | Method for measuring bonding strength of iron ore sintering bonding phase |
| CN110146364B (en) * | 2019-06-27 | 2022-01-21 | 华北理工大学 | Evaluation method of plating assistant agent for metal hot dipping |
| CN110146364A (en) * | 2019-06-27 | 2019-08-20 | 华北理工大学 | A kind of evaluation method of metal hot dipping fluxing agent |
| CN113008657A (en) * | 2019-12-20 | 2021-06-22 | 中核北方核燃料元件有限公司 | Tensile sample for evaluating strength of lap weld of reactor assembly |
| CN112082940A (en) * | 2020-09-02 | 2020-12-15 | 山东司莱美克新材料科技有限公司 | Method for testing bonding force pull-off of ceramic plate |
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Application publication date: 20130522 |