CN203616234U - Test device for determining metal corrosion - Google Patents
Test device for determining metal corrosion Download PDFInfo
- Publication number
- CN203616234U CN203616234U CN201320642712.4U CN201320642712U CN203616234U CN 203616234 U CN203616234 U CN 203616234U CN 201320642712 U CN201320642712 U CN 201320642712U CN 203616234 U CN203616234 U CN 203616234U
- Authority
- CN
- China
- Prior art keywords
- test
- sample
- metal protection
- test unit
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 45
- 239000002184 metal Substances 0.000 title claims abstract description 45
- 230000007797 corrosion Effects 0.000 title abstract description 24
- 238000005260 corrosion Methods 0.000 title abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims abstract description 13
- 238000010992 reflux Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000005088 metallography Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model relates to a test device for determining metal corrosion, and mainly solves the problems of poor thermal insulation effect, operation difficulties and inaccurate test result in the prior art. The test device for determining metal corrosion comprises constant-temperature protection cases K, heating jackets J, test containers I, test object suspension frames E and reflux condensing tubes B, wherein the main body parts of the test containers I are located in the heating jackets J which are located in the constant-temperature protection cases K, at least three ports are formed in the top of each test container I, one port is connected with the corresponding reflux condensing tube B, a temperature meter is inserted into another port, the last port serves as a sample supplementing port, and the test object suspension frames E are perpendicularly placed at the bottoms in the test containers I. With the adoption of the technical scheme, at least three fixtures capable of suspending samples are arranged, so that the problems are solves better, and the test device can be applied to a metal corrosion test.
Description
Technical field
The utility model relates to a kind of test unit of determining metal protection.
Technical background
Corrosion comprises corrosion to skin and to corrosion of metal, regulation in the United Nations's " about the recommendation model constitution of Dangerous Goods Transport " (the 16 revised edition) the 2.8th chapter and GB/T21621-2008 " metal protection test method ", for example, as a kind of material shows certain corrosivity (pH=2～3 or pH=10.5～11.5), and skin is not had to corrosivity, need to test it to corrosion of metal.Corrosion of metal is referred to metal generation physics and chemistry and interacted, metallicity is changed, cause metal, the phenomenon that environment and formation system thereof can sustain damage.
CN201210402631.7 provides a kind of liquid to metal protection test unit, comprise two full impregnated oolemma scale corrosion container stills, two cover serpentine condensers, one water bath with thermostatic control, one circulating cooling water-bath, Full-automatic liquid level control device, analytical balance and iron stand, transparent corrosion container still is partly immersed in the water bath with thermostatic control of 55 ℃ of constant temperature, testing liquid is poured in still, the sheet metal of making in advance and weigh quality according to the technical requirement of " test and manual of standards " is suspended in still in mode unsettled, that partly soak, entirely soak respectively, keeps static placement 7 days.For preventing liquid evaporation in still, above still, connect a set of condensing unit and communicate with good fortune still mouth.After off-test, take out after sheet metal is cleaned oven dry and weigh quality, then contrast with the quality before test, calculate maximum rate of corrosion.But this test unit adopts constant temperature water bath, there are two problems in water-bath: (1) water-bath easily makes test container floating, not easy to operate; (2) for a long time water-bath easily damages water bath containers, if metal, the corrosion that gets rusty easily, if plastics, 55 ± ℃ time be easily out of shape, cause poorly sealedly, heat insulation effect is bad.What all test such as the test unit of metal protection again is the temperature of water-bath, rather than the temperature of test sample, and 55 ± 1 ℃ of testing requirements are the temperature of test sample, are difficult to guarantee required temperature by the temperature of test water-bath.Metal lacing film sample all adopts the rope of teflon to hang for another example, there are so technically several problems: (1) rope is hung while running into the large sample of viscosity, metal lacing film is easy to be bonded on the wall of test container, causes contact liq sample insufficient.(2) fluid sample of condensation is easy to flow down along rope, flows on metal lacing film unsettled and that partly soak, causes testing inaccurate.
The utility model has solved this problem targetedly.
Summary of the invention
Technical problem to be solved in the utility model is bad, not easy to operate, the inaccurate problem of test result of heat insulation effect in prior art, and a kind of new test unit to metal protection of determining is provided.This device, for the test of metal protection, has high insulating effect, easy to operate, test result advantage accurately.
For addressing the above problem, the technical solution adopted in the utility model is as follows: a kind of test unit of determining metal protection, comprise constant temperature guard box K, heating jacket J, test container I, tester suspension holdfast E and reflux condensing tube B, test container I main part is positioned at heating jacket J inside, heating jacket J is positioned at constant temperature guard box K inside, test container I top has at least three mouths, one is connected with reflux condensing tube B, one is inserted with thermometer, another supplements mouth as sample, tester suspension holdfast E is vertically placed on the bottom in test container I, be provided with at least three fixtures that can hang sample.
In technique scheme, preferably, described test heating jacket J is also provided with liquid level observation window mouth G.
In technique scheme, preferably, the fixture that at least three of described tester suspension holdfast E can hang sample guarantee test sample in entirely soaking, partly soak, vacant state.
In technique scheme, preferably, described metal hanging sheet material is: aluminium: non-compound 7075-T6 or AZ5GU-T6; Steel: S235JR+CR or S275J2G3+CR.
In technique scheme, preferably, described tester suspension holdfast E pillar is high-intensity anti-rot plastic.
In technique scheme, preferably, described thermometer and heating jacket J acting in conjunction, control fluid sample temperature and maintain 55 ± 1 ℃.
In technique scheme, preferably, described test container I is cylindrical glass or glass steel container.
Metal protection test unit described in the utility model, be that an Analysis of Nested Design is used for assessing the liquid solid matter of liquid (or may become in transportation) (55 ± 1 ℃) and certain hour (7 days, 14 days, 21 days, 28 days) the corrosivity situation to metal (steel disc and aluminium flake) at a certain temperature, result characterizes by mass loss and the corrosion depth of metal lacing film.The utility model has reached the definite requirement to metal protection test method of GB/T21621-2008 " metal protection test method " and the United Nations's " about the recommendation model constitution of Dangerous Goods Transport " (the 16 revised edition) 37.4 definite aspect the technical requirement of corrosion of metal.The utility model adopts heating jacket and thermometer composition temperature-controlling system, and in co-controlling test container, the temperature of sample, more effectively controls constant temperature effect, the defect that can also avoid water-bath to bring.The hang of metal lacing film, hangs the rope with teflon in past to be suspended on a support instead, can make metal lacing film sample contact liq sample fully, can also avoid withdrawing fluid to flow on metal lacing film, makes test more accurate.Increased a constant temperature guard box in test macro outside, effectively protection system internal temperature is stable.This device is simple to operation, measures and connects accurately and reliably, has obtained good technique effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of device described in the utility model.
A: iron stand
B: reflux condensing tube
C: thermometer
D: sample supplements mouth
E: tester suspension holdfast
F: metal lacing film sample
G: liquid level observation window mouth (rectangular broken line part)
H: liquid level line (dotted line)
I: test container
J: heating jacket
K: constant temperature guard box
Below by embodiment, the utility model is further elaborated, but is not limited only to the present embodiment.
Embodiment
[embodiment 1]
While using device of the present utility model, need in fuming cupboard, test, exhaust system should be suitable for absorbing poisonous flue gas, and is with anticorrosion gloves, then tests according to the following step:
1, program
Make metal lacing film sample:
Metal hanging sheet material is steel: S235JR+CR (1.0037resp.St37-2), size: long 50mm, and wide 20mm, thick 2mm, there is the aperture of a diameter 3mm one end.
The sand papering metal lacing film sample of No. 120 sand grains of application.Remove residual sand grains and remove after oil stain with acetone bathing with alcohol excusing from death ripple, weighing the weight of test button, error is at ± 0.0002g.Must not do chemical treatment (pickling, etching etc.) by effects on surface, to prevent " stimulation ", inhibition, the passivation of effects on surface), test button is fixed on to tester suspension holdfast, for subsequent use.
In test container, add testing liquid sample; join the following about 10mm of liquid level line place; the tester suspension holdfast that is fixed with test button is put into test container; after level stability; in test container, add liquid testing sample; be added to liquid level line place always; cover the lid of test container, insert thermometer, cover fluid infusion mouth; put into heating jacket; connect reflux condensing tube, in reflux condensing tube, pass into chilled water, temperature setting is set to 55 ℃; close constant temperature guard box, the time that record test starts.
Whole duration of test, comprises gas-phase space, should remain 55 ± 1 ℃ of test temperatures.Test button should be exposed at least one week of aforementioned stable state (168 ± 1 hours).
After having tested, reply test button rinses, and brushes (not handy metallic brush) with synthetic or natural bristle and scrub clean.The residue (adhesion corrosion products or sediment) that mechanical means cannot be removed, should use inhibition pickle.Need in this case to use the same method (time, temperature, concentration, surface treatment) one is processed without the reference coupon exposing to the open air, with the mass loss of determining that Acidwash solution causes.Calculating before rate of corrosion, must deduct this value.After making last cleaning of alcohol and acetone ultrasonic bath and being dried, should weigh the weight of test button.The quality that test findings obtains, with test before mass ratio, can obtain rate of corrosion.
2, the method for assessment result
The test assessment of uniform corrosion:
The in the situation that of uniform corrosion, should use the mass loss of the most serious sample of corrosion.Any sample, if the mass loss of test button higher than the listed number of following table, test findings should be " ﹢ ".
The minimum quality of sample loss after the different exposure times of table 1
The test determination of local corrosion:
When surface is except being subject to uniform corrosion or corrode inhomogeneous and occur when local corrosion, maximum hole maximum ga(u)ge dark or that reduce should add result of calculation, or be used for separately determine erosion degree, if the darkest erosion (determining with metallography method) exceedes value listed in following table, result should be "+":
Minimum depth of erosion after table 2 timing exposes to the open air
Claims (7)
1. determine the test unit to metal protection for one kind; comprise constant temperature guard box K, heating jacket J, test container I, tester suspension holdfast E and reflux condensing tube B; test container I main part is positioned at heating jacket J inside; heating jacket J is positioned at constant temperature guard box K inside; test container I top has at least three mouths; one is connected with reflux condensing tube B; one is inserted with thermometer; another supplements mouth as sample; tester suspension holdfast E is vertically placed on the bottom in test container I, is provided with at least three fixtures that can hang sample.
2. determine according to claim 1 the test unit to metal protection, it is characterized in that described heating jacket J is also provided with liquid level observation window mouth G.
3. determine according to claim 1 test unit to metal protection, it is characterized in that fixture that at least three of described tester suspension holdfast E can hang sample guarantee test sample in entirely soaking, partly soak, vacant state.
4. determine according to claim 1 the test unit to metal protection, it is characterized in that described metal hanging sheet material is: aluminium: non-compound 7075-T6 or AZ5GU-T6; Steel: S235JR+CR or S275J2G3+CR.
5. determine according to claim 1 the test unit to metal protection, it is characterized in that described tester suspension holdfast E pillar is high-intensity anti-rot plastic.
6. determine according to claim 1 the test unit to metal protection, it is characterized in that described thermometer and heating jacket J acting in conjunction, control fluid sample temperature and maintain 55 ± 1 ℃.
7. determine according to claim 1 the test unit to metal protection, it is characterized in that described test container I is cylindrical glass or glass steel container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642712.4U CN203616234U (en) | 2013-10-17 | 2013-10-17 | Test device for determining metal corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642712.4U CN203616234U (en) | 2013-10-17 | 2013-10-17 | Test device for determining metal corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203616234U true CN203616234U (en) | 2014-05-28 |
Family
ID=50768868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642712.4U Expired - Lifetime CN203616234U (en) | 2013-10-17 | 2013-10-17 | Test device for determining metal corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203616234U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644915A (en) * | 2017-02-07 | 2017-05-10 | 中石化炼化工程（集团）股份有限公司 | Device and method for evaluating nitric acid corrosion |
| CN107290267A (en) * | 2016-04-11 | 2017-10-24 | 天津百塑行新材料科技开发有限公司 | A kind of plastics determination of corrosion instrument |
| CN113884431A (en) * | 2021-09-28 | 2022-01-04 | 江苏徐工工程机械研究院有限公司 | Industrial paint film weather resistance detection system |
| CN113970515A (en) * | 2020-07-24 | 2022-01-25 | 宝山钢铁股份有限公司 | Method for accurately measuring corrosion weight gain of metal material and application |
-
2013
- 2013-10-17 CN CN201320642712.4U patent/CN203616234U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290267A (en) * | 2016-04-11 | 2017-10-24 | 天津百塑行新材料科技开发有限公司 | A kind of plastics determination of corrosion instrument |
| CN106644915A (en) * | 2017-02-07 | 2017-05-10 | 中石化炼化工程（集团）股份有限公司 | Device and method for evaluating nitric acid corrosion |
| CN113970515A (en) * | 2020-07-24 | 2022-01-25 | 宝山钢铁股份有限公司 | Method for accurately measuring corrosion weight gain of metal material and application |
| CN113970515B (en) * | 2020-07-24 | 2023-11-14 | 宝山钢铁股份有限公司 | Method for accurately measuring corrosion weight gain of metal material and application thereof |
| CN113884431A (en) * | 2021-09-28 | 2022-01-04 | 江苏徐工工程机械研究院有限公司 | Industrial paint film weather resistance detection system |
| CN113884431B (en) * | 2021-09-28 | 2023-11-07 | 江苏徐工工程机械研究院有限公司 | Industrial paint film weather resistance detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203616234U (en) | Test device for determining metal corrosion | |
| Singer et al. | Sour top-of-the-line corrosion in the presence of acetic acid | |
| CN103257104B (en) | A kind of protective materials cold-and-heat resistent pulsating fatigue test unit | |
| JP7104326B2 (en) | Corrosion assessment device and its method | |
| CN102854127A (en) | Contrast simulation testing device for carbon dioxide corrosion resistant performance of steel and testing method thereof | |
| CN106442283B (en) | A kind of analogy method of atmospheric corrosion | |
| Bi et al. | An investigation of cathodic oxygen reduction beneath an intact organic coating on mild steel and its relevance to cathodic disbonding | |
| US20060162432A1 (en) | Corrosion testing apparatus | |
| CN103884817A (en) | Dynamic simulation test device for chemically cleaning power station boiler and fabrication and test methods of test device | |
| CN102928313A (en) | Liquid-to-metal corrosion testing device | |
| CN111595719B (en) | Evaluation device and evaluation method for vapor phase corrosion inhibitor at distillation column top | |
| CN202854022U (en) | Comparison simulation testing device for carbon dioxide corrosion resistance of steel products | |
| CN111781129A (en) | High-efficiency metal material corrosion rate measuring device and method | |
| Ajayi et al. | Efficiency of volatile corrosion inhibitors in wet gas pipelines | |
| CN203786101U (en) | Dynamic simulation testing device for chemical cleaning of power station boiler | |
| CN205861648U (en) | A kind of accurate pH meter | |
| CN102419293B (en) | Method for rapidly detecting corrosivity of chemicals by microwave radiation | |
| CN206778373U (en) | Water-bath attemperator is used in a kind of grease type moisture detection | |
| SU129872A1 (en) | Method for evaluating the corrosive properties of motor oils | |
| US3008085A (en) | Solids and liquids corrosion testing and recording | |
| WO2020230183A1 (en) | Corrosiveness prediction device and method | |
| CN105181569A (en) | Ammonium salt under-scale corrosion experiment device and experiment method thereof | |
| Islam | An Investigation on the top-of-the-line corrosion using novel methods | |
| CN106644915A (en) | Device and method for evaluating nitric acid corrosion | |
| RU2747078C1 (en) | Method for researching pipeline corrosion rate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |