CN106290142A - Device and method for detecting compactness of rusty layer of strip steel sample - Google Patents
Device and method for detecting compactness of rusty layer of strip steel sample Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 47
- 239000010959 steel Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 27
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 230000033228 biological regulation Effects 0.000 claims description 32
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 26
- 238000012545 processing Methods 0.000 abstract description 2
- 238000007373 indentation Methods 0.000 abstract 1
- 239000002436 steel type Substances 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 17
- 230000007797 corrosion Effects 0.000 description 17
- 229910000870 Weathering steel Inorganic materials 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000010962 carbon steel Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000010257 thawing Methods 0.000 description 4
- 238000000280 densification Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012113 quantitative test Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 210000001215 vagina Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention provides a device and a method for detecting the compactness of a rust layer with a steel sample.A base of the detection device supports a tube seat through a support, the tube seat is provided with a tube body with scales, and one side of the tube body is provided with a lifting groove; the pipe body is internally provided with a heavy hammer, the pipe body is externally sleeved with an adjusting sleeve, a clamping groove of the adjusting sleeve is internally and movably connected with a chuck with an opening, one side of the adjusting sleeve is provided with an opening groove, a punch is arranged below the heavy hammer, and a spring is sleeved on the punch. Lifting the selected heavy hammer to the upper end of the groove of the adjusting sleeve and fixing the heavy hammer by using a chuck; rotating the chuck to enable the opening of the chuck to coincide with the groove of the adjusting sleeve, enabling the heavy hammer to fall down, and pressing the lower end of the punch into the surface of the sample rust layer; and (3) taking out the sample, measuring the lengths of the two diagonal cracks of the square indentation on the surface of the rust layer of the sample, calculating the sum of the lengths of the two diagonal cracks, and comparing the lengths of the diagonal cracks of different steel types, wherein the shorter the length is, the more compact the rust layer of the sample is. The method is simple and easy to implement, few in influencing factors, capable of directly testing and quantitatively comparing the density degree of the rust layer without cutting and processing the sample, and stable in detection result.
Description
Technical field
The invention belongs to steel corrosion detection technique field, be specifically related to a kind of detection dress for band rust steel sample rusty scale compactness extent
Put and detection method.
Background technology
The corrosion phenomenon of steel component is ubiquitous, and the waste of material and the economic loss that thereby result in are the most inestimable.In order to solve
Steel holds corrosion-prone problem in an atmosphere, and people have developed weathering steel.Owing to weathering steel surface can generate the protection of stable densification
Property rusty scale and hinder corrosive medium contact matrix, reduce corrosion rate, be therefore widely used.And steel surface is formed
Rusty scale loosen easy to fall off, and with the presence of micro-crack, therefore matrix can not be played a protective role.In actual applications, many
Steel construction (such as bridge, container etc.) to undertake certain load, and such as the vibrations produced when vehicle is by bridge, container is being removed
The collision etc. produced during fortune.If the rusty scale on steel surface is the finest and close, during reality is on active service, rusty scale is easy for cracking,
Making rusty scale localised protection action deprivation, iron and steel occurs again to corrode.So, can weathering steel generate densification in corrosive environment
Rusty scale, has great significance to corrosion resistance.Therefore, a kind of side that can quickly measure band rust steel sample rusty scale compactness extent is developed
Method and device have necessity and practical value.
Naked steel corrosive nature under atmospheric environment mainly relies on the rusty scale of the stable densification of surface formation to protect matrix, from
And hinder corrosive medium contact matrix to realize.The evaluation of rusty scale compactness extent is mainly had electrochemical process, corrosion to produce by people at present
Thing analytic process, rusty scale Mechanics Performance Testing and rusty scale freeze-thawing method etc..
Paper " W450QN steel atmospheric corrosion performance " (corrosion and protection [J], 2011,32 (4): 305-307), uses electrification
The atmospheric exposure band of 3 years rust sample is carried out polarization curve test by method, judges the compactness of rusty scale by tieing up blunt electric current density,
Tieing up blunt electric current density the least, illustrate that its rusty scale is fine and close, rusty scale barrier propterty is better.But the method needs before carrying out corrosion testing
Inlay sample, it is impossible to normal tape rust sample is carried out electrochemical test, therefore there is limitation.
Paper " weathering steel rusty scale component of organization and corrosion-resistant mechanism analysis thereof " (material protection [J], 2009,42 (1): 18-19),
Sample rusty scale after using scanning electron microscope to soak carbon steel and weathering steel week carries out morphology analysis, reflects the compactness of rusty scale.Scanning
Electron microscopic observation rusty scale cross section, needs to be inlayed by cutting mode sampling, and this process easily makes rusty scale loosen thus cracks,
And the method can not be quantitative test, the compactness extent of rusty scale can only be judged qualitatively, its result is affected by human factors greatly.
Paper " mechanical property of Protective Rust Layer Formed on Surface of Weathering Steel Panels " (steel research journal [J], 2006,18 (3): 42-45),
Band rust sample is carried out cutting and inlays sanding and polishing, use ultra microhardness instrument that rusty scale cross section is carried out impression test.Due to this
Method is also to need cutting, thus easily makes rusty scale crack.
Publication number CN 102866104 A discloses one " evaluation based on the weathering steel rusty scale protective capability that freeze-thawing processes
Method ", use freeze-thawing method to process weathering steel rusty scale, produce the change of rusty scale crackle, utilize scanning electron microscope to observe,
Thus evaluate the compactness extent of weathering steel rusty scale.The method be primarily directed to north cold area rusty scale resist frost ability or
The dew impact on rusty scale, has limitation；And the method carries out that freeze-thawing required time is longer, process is loaded down with trivial details, and
Being also required to utilize scanning electron microscope to judge, it is impossible to quantitative test, result is affected by human factors greatly.
Summary of the invention
It is desirable to provide a kind of simple, quick and precisely, it is not necessary to cut and inlay, can detection by quantitative normal tape rust sample
The device and method of rusty scale compactness extent.
To this end, the technical solution that the present invention is taked is:
A kind of band rust steel sample rusty scale compactness extent detection device, including base, pillar, base, body, regulation set, chuck,
Weight, drift and spring；Base supports base by pillar, and base is fixed on the body that surface is with a scale, body side
Axially have one lifting groove；Being provided with weight in body, weight top is fixed with handle by connecting rod, and connecting rod is placed in lifting
In groove；" H " shape regulation set with draw-in groove, flexible connection one annular card in regulation set draw-in groove in the middle of one it is slidably socketed outside body
Dish, with gap on chuck, regulation set side and lifting groove correspondence position are provided with slot, and regulation set is fixed by adjusting screw
On body, equipped with a "T"-shaped drift below weight, the plunger rod of four-prism being cased with spring, lower spring end card is placed on
In bore of the punch chuck in the middle of base.
Described weight weight is 0.5～3kg.
Described tube surfaces scale is 0～300mm.
A kind of band rust steel sample rusty scale compactness extent detection method, its concrete grammar and step be:
1, produce at least 2 steel grades, 3 pieces of plane plate specimens of each steel grade carry out comparison and detection.
2, one of them sample is placed on detection device pedestal.
3, rotary chuck, makes chuck gap overlap with regulation set slot, unclamps adjustment screw, regulation set is adjusted to setting height
Rear locking adjust screw, then the weight chosen is raised to regulation set slot upper end after, rotary chuck make chuck gap with regulation set
Slot staggers, and makes weight be fixed on desired height.
When 4, dropping hammer, rotary chuck makes its gap overlap with regulation set slot, and weight falls naturally, and drift lower end pressing in sample becomes rusty
Layer surface.
5, promote weight by handle and overlap slot upper end, rotary chuck to regulation, weight is fixed.
6, take out sample, measure two diagonal crack lengths of sample rusty scale surface squares impression, calculate two diagonal
Crack length sum, and record.
7, detect and calculate two diagonal crack length sums of remaining each sample respectively by step 2～6, make even by steel grade
After average, relatively different steel grade meansigma methodss, length the shortest explanation sample rusty scale is the finest and close, otherwise then loosens.
The invention have the benefit that
Compared with the prior art, band of the present invention rust sample, without cutting processing, can directly be tested, and Quantitative Comparison rusty scale
Compactness extent；Can be used for the test of band rust sample arbitrary surfaces, at the band rust square impression that stays of specimen surface with split after test
Stricture of vagina, convenient reinspection.Weight and the pendency height of weight according to the compactness extent of rusty scale, can be chosen, carry out the survey of different impulsive force
Examination, and quickly detect result.Apparatus of the present invention simple in construction, it is easy to safeguarding, method is convenient to operate, and influence factor is few, inspection
Survey results contrast is stable.
Accompanying drawing explanation
Fig. 1 is band rust steel sample rusty scale compactness extent detection device contour structures schematic diagram；
Fig. 2 is band rust steel sample rusty scale compactness extent detection device internal structure schematic diagram.
In figure: base 1, pillar 2, base 3, body 4, scale 5, chuck 6, regulation set 7, handle 8, weight 9,
Gap 10, adjustment screw 11, slot 12, lifting groove 13, drift 14, connecting rod 15, spring 16.
Detailed description of the invention
From accompanying drawing, band of the present invention rust steel sample rusty scale compactness extent detection device, mainly by base 1, pillar 2, base 3,
Body 4, chuck 6, regulation set 7, weight 9, drift 14 and spring 16 are formed.
Base 1 and base 3 are a flat board, and base 3 center has one with the bore of the punch of chuck.Base 1 is by pillar 2
Supporting base 3, base 3 is fixed on body 4, and body 4 surface indicates the scale 5 from 0～300mm, is used for demarcating weight
The height of hammer 9.Side along body 4 axially has one lifting groove 13, and body 4 is built with the weight that weight is 0.5～3kg
Hammering 9 into shape, leader 8 is fixed by connecting rod 15 in the top of weight 9, and connecting rod 15 is arranged in lifting groove 13, in order to weight
The lifting of hammer 9.In the middle of the sliding outside socket one of body 4, " H " shape with draw-in groove regulates set 7, and regulation set 7 can be along pipe
Body 4 slides up and down；Being flexibly connected an annular chuck 6 in the draw-in groove of regulation set 7, chuck 6 can rotate with draw-in groove for axle, card
With gap 10 on dish 6.The side of regulation set 7 and lifting groove 13 correspondence position are provided with slot 12, and regulation set 7 is by adjusting
Whole screw 11 is fixed on body 4.Equipped with a "T"-shaped drift 14 below weight 9, drift 14 lower punch bar is
Four-prism, lower surface is square, and plunger rod is cased with spring 16, and the lower end card of spring 16 is placed in the middle of base 3
In bore of the punch chuck.
Embodiment 1, utilizes patent of the present invention to test the band rust steel sample after Laboratory-Accelerated Corrosion.
Laboratory period soaking corrosion Q690qE Weather-resistance bridge steel after 30 days and Q345 carbon steel is selected to carry out the test of rusty scale compactness extent,
Two steel grades are all chosen 3 pieces of parallel samples and are tested, and specimen size is 50 × 50 × 5mm, use after being dried by sample to be tested.
Regulation adjusts screw 11, makes regulation set 7 be positioned at the position of 100mm, and rotary chuck 6 makes to avoid regulation at its gap 10
The slot 12 of set 7.The weight 9 selecting weight to be 1kg, fixing weight 9.Q690qE Weather-resistance bridge steel 1# sample is positioned over
The center of base 1, now rotary chuck 6 makes its gap 10 overlap with the slot 12 of regulation set 7, and weight 9 falls,
Drift 14 pressing in sample rusty scale surface, promotes handle 8, rotary chuck 6, is fixed by weight 9.Take out Q690qE Weather-resistance bridge
Steel 1# sample.Q690qE Weather-resistance bridge steel 2#, 3# and Q345 carbon steel 1#, 2#, 3# all use above-mentioned steps.
Measure the rusty scale surface squares impression diagonal crack initiation length of 6 samples with ruler, and calculate diagonal crackle and open
Splitting length sum, after averaging, compare the meansigma methods of two steel grades, length the shortest explanation sample rusty scale is the finest and close, otherwise then dredges
Pine.Inlay sample simultaneously, polish, polish, sample rusty scale cross section is carried out morphology observations.Its result of the test is shown in Table 1.
Table 1 embodiment 1 result of the test
The rusty scale diagonal cracking length of 3 pieces of samples of Q345 carbon steel is all higher than 3 pieces of samples of Q690qE Weather-resistance bridge steel, says
After 30 days, Q690qE Weather-resistance bridge steel rusty scale is finer and close, rusty scale protective effect is stronger for bright laboratory period soaking corrosion.This result with
Scanning electron microscope result is consistent.
Embodiment 2, utilizes patent of the present invention to test the band rust steel sample after atmospheric exposure corrosion testing.
Select Bayuquan atmospherical exposure test station the carry out corrosion testing 09CuPCrNi-A weather resisting steel of a year and 2 years towards sky
The test of rusty scale compactness extent is carried out in face, and each time is all chosen 3 pieces of parallel samples and tests, and exposing a term specimen coding is
1#, 2#, 3#, exposing biennial specimen coding is 4#, 5#, 6#, and specimen size is 100 × 50 × 5mm.Experimental working technique
Same as in Example 1, weight 9 weight selects 3kg, and falling head selects 150mm.Result of the test is shown in Table 2.
Table 2 embodiment 2 result of the test
The rusty scale diagonal cracking length of 3 pieces of samples of 09CuPCrNi-A mono-term is all higher than 09CuPCrNi-A bis-term 3 pieces
Sample, illustrates that open-assembly time is the longest, and the rusty scale of weathering steel is the finest and close, and the protectiveness of rusty scale is the strongest.This result is tied with scanning electron microscope
Fruit is consistent.
Embodiment 3, utilizes patent of the present invention to test the band rust steel sample after the lacing film splash zone corrosion of real sea.
Seawater corrosion test station, Qingdao splash zone corrosion is selected to test a term Q500qE, Q690qENH, pleasure-boat Cargo Oil storehouse COT steel
Carry out the test of rusty scale compactness extent.Each steel grade takes three pieces of parallel samples, and specimen size is 200m × 100mm × 5mm.Test behaviour
Making method same as in Example 1, weight 9 weight selects 2kg, and falling head selects 250mm.Result of the test is shown in Table 2.
Table 3 embodiment 3 result of the test
Judge that rusty scale compactness extent is Q690qENH > Q500qE > COT steel according to the rusty scale diagonal cracking length of sample, this result
Consistent with scanning electron microscope result.
Claims (4)
1. band rust steel sample rusty scale compactness extent detection device, it is characterised in that include base, pillar, base, body,
Regulation set, chuck, weight, drift and spring；Base supports base by pillar, and it is with a scale that base is fixed on surface
Body, body side axially has one lifting groove；Being provided with weight in body, weight top is fixed with handle by connecting rod,
Connecting rod is placed in lifting groove；" H " shape regulation set with draw-in groove in the middle of one it is slidably socketed outside body, movable in regulation set draw-in groove
Connecting an annular chuck, with gap on chuck, regulation set side and lifting groove correspondence position are provided with slot, and regulation set is logical
Cross adjustment screw to be fixed on body, equipped with a "T"-shaped drift below weight, the plunger rod of four-prism be cased with spring,
Lower spring end card is placed in the bore of the punch chuck in the middle of base.
Band the most according to claim 1 rust steel sample rusty scale compactness extent detection device, it is characterised in that described weight weight
It is 0.5～3kg.
Band the most according to claim 1 rust steel sample rusty scale compactness extent detection device, it is characterised in that described tube surfaces
Scale is 0～300mm.
4. apply the method for band rust steel sample rusty scale compactness extent detection device described in claim 1 for one kind, it is characterised in that concrete
Detection method and step be:
(1) produce at least 2 steel grades, 3 pieces of plane plate specimens of each steel grade carry out comparison and detection；
(2) one of them sample is placed on detection device pedestal；
(3) rotary chuck, makes chuck gap overlap with regulation set slot, unclamps adjustment screw, be adjusted to regulation set set height
After degree locking adjust screw, then the weight chosen is raised to regulation set slot upper end after, rotary chuck makes chuck gap and regulation
Set slot staggers, and makes weight be fixed on desired height；
(4), when dropping hammer, rotary chuck makes its gap overlap with regulation set slot, and weight falls naturally, drift lower end pressing in sample
Rusty scale surface；
(5) promote weight by handle and overlap slot upper end, rotary chuck to regulation, weight is fixed；
(6) take out sample, measure two diagonal crack lengths of sample rusty scale surface squares impression, calculate two diagonal angles
Line crack length sum, and record；
(7) detected and calculated two diagonal crack length sums of remaining each sample by step (2)～(6) respectively, press
After steel grade is averaged, relatively different steel grade meansigma methodss, length the shortest explanation sample rusty scale is the finest and close, otherwise then loosens.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510363666.8A CN106290142B (en) | 2015-06-26 | 2015-06-26 | Device and method for detecting compactness degree of rust layer of rust-carrying steel sample |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510363666.8A CN106290142B (en) | 2015-06-26 | 2015-06-26 | Device and method for detecting compactness degree of rust layer of rust-carrying steel sample |
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| Publication Number | Publication Date |
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| CN106290142B CN106290142B (en) | 2024-02-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509861A (en) * | 2009-03-31 | 2009-08-19 | 北京科技大学 | Judgement method for protective capability of weathering steel rust layer |
| CN201697845U (en) * | 2010-06-08 | 2011-01-05 | 上海天地涂料有限公司 | Paint film impactor |
| CN202471382U (en) * | 2012-01-19 | 2012-10-03 | 杭州彩贝化工有限公司 | An impact tester |
| CN203164067U (en) * | 2013-01-21 | 2013-08-28 | 肇庆市新大陆高分子材料有限公司 | Paint-film impact instrument |
| CN203432861U (en) * | 2013-01-30 | 2014-02-12 | 江阴市大阪涂料有限公司 | High-strength-resistant multipoint impact tester for paint film |
| CN204789284U (en) * | 2015-06-26 | 2015-11-18 | 鞍钢股份有限公司 | Device for detecting compactness of rust layer of rusted steel sample |
-
2015
- 2015-06-26 CN CN201510363666.8A patent/CN106290142B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509861A (en) * | 2009-03-31 | 2009-08-19 | 北京科技大学 | Judgement method for protective capability of weathering steel rust layer |
| CN201697845U (en) * | 2010-06-08 | 2011-01-05 | 上海天地涂料有限公司 | Paint film impactor |
| CN202471382U (en) * | 2012-01-19 | 2012-10-03 | 杭州彩贝化工有限公司 | An impact tester |
| CN203164067U (en) * | 2013-01-21 | 2013-08-28 | 肇庆市新大陆高分子材料有限公司 | Paint-film impact instrument |
| CN203432861U (en) * | 2013-01-30 | 2014-02-12 | 江阴市大阪涂料有限公司 | High-strength-resistant multipoint impact tester for paint film |
| CN204789284U (en) * | 2015-06-26 | 2015-11-18 | 鞍钢股份有限公司 | Device for detecting compactness of rust layer of rusted steel sample |
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