CN108562532A - A kind of quantitative evaluation method of steel wire coating corrosion resistance - Google Patents
A kind of quantitative evaluation method of steel wire coating corrosion resistance Download PDFInfo
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- CN108562532A CN108562532A CN201810232560.8A CN201810232560A CN108562532A CN 108562532 A CN108562532 A CN 108562532A CN 201810232560 A CN201810232560 A CN 201810232560A CN 108562532 A CN108562532 A CN 108562532A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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Abstract
The present invention relates to a kind of quantitative evaluation methods of steel wire coating corrosion resistance, it has selected to make testing result more accurately and reliably cutting area coating and cleaning agent, this method can be used for the quantitative evaluation method of steel wire coating corrosion resistance, it can also be used to the corrosion resistance evaluation of different-diameter steel wire or different coating.A kind of quantitative evaluation method of steel wire coating corrosion resistance provided by the invention, the experimental condition involved in the method include the coating surface cleaning experimental condition after salt spray test condition and salt spray test.A kind of flow of the quantitative evaluation method of steel wire coating corrosion resistance includes：Sample pretreatment, salt spray test, sample post-processing and coating corrosion resistance calculate.
Description
Technical field
The present invention relates to a kind of quantitative evaluation methods of steel wire coating corrosion resistance, belong to technical field of chemical detection.
Background technology
Salt spray test is exposed to sample in the atmosphere of the salt water mist containing a certain concentration, acidity and temperature, to examination
The method that the corrosion resistance of sample is measured is common corrosion resistance detection method in sufacing, therefore salt fog tries
Test the corrosion resistance for being often used in examining and verify steel wire coating metal.
Currently, there is respective salt spray test method national standard in industrial advanced country in the world.Salt spray test side
There are mainly two types of methods：One is the corrosion resistant performances that regulation test period judges coating；One is coating to occur needed for corrosion phenomena
The time wanted.Former experiment can be used for the corrosion resistance of more various coating, it can be difficult to inferring the anti-corrosion longevity of coating
Life；Latter tests the service life that can grasp coating, but because not knowing when coating corrosion occurs, it often will be to coating
It is observed, process is complicated and time-consuming.
For steel wire coating metal, Normal practice is the corruption for carrying out neutral salt spray test and observing coating surface afterwards for a period of time
Lose situation.For, mainly by judging visual examination, being subjective, qualitatively sentencing in corrosion situation most standard
Disconnected, human factor is affected.
As people are higher and higher to the requirement of coating corrosion resistance, the present invention provides a kind of steel wire coating corrosion resistances
The quantitative evaluation method of energy keeps testing result more accurate and reliable.
Invention content
The present invention provides a kind of quantitative evaluation methods of steel wire coating corrosion resistance, have selected to make testing result more
Accurately and reliably cutting area coating and cleaning agent, this method can be used for the quantitative evaluation method of steel wire coating corrosion resistance,
It can also be used for the corrosion resistance evaluation of different-diameter steel wire or different coating.
A kind of quantitative evaluation method of steel wire coating corrosion resistance provided by the invention, the experiment involved in the method
Condition includes the coating surface cleaning experimental condition after salt spray test condition and salt spray test.
(1) salt spray test condition：Neutral salt spray test is carried out using salt fog cabinet.It is required that the mass concentration 50g/L of NaCl ±
5g/L, pH value are 6.5 ~ 7.2, and 35 DEG C ± 2 DEG C of test temperature, spray amount is per 80cm2Collecting amount be 1-2ml/h.
(2) coating surface cleans experimental condition, and coating surface cleaning is carried out using chrome pickle agent.It is required that chrome pickle agent
Mass concentration be 200g/L ± 10g/L, 25 DEG C ± 5 DEG C of cleaning temperature.
A kind of flow of the quantitative evaluation method of steel wire coating corrosion resistance includes：Sample pretreatment, salt spray test, sample
Product post-process and coating corrosion resistance calculates.
(1) sample pretreatment：The coating wire for intercepting appropriate length, using the greasy dirt on alcohol removal steel wire coating surface,
The foreign matters such as impurity protect the cutting area of steel cord end as coating using compound AB glue.Record effective length of sample
Spend L, diameter D and quality m0, wherein effective length L is accurate to 1mm, and diameter D is accurate to 0.001mm, quality m0It is accurate to 0.1mg.
(2) salt spray test：Pretreated sample is put into salt fog cabinet and carries out neutral salt spray test, records the salt fog time
T, the salt fog time, t was accurate to s, it is proposed that test period 300s can be adjusted according to coating conditions.
(3) sample post-processes：Sample after salt spray test is immediately placed in the container of chrome pickle agent and is cleaned, sample
After salt and the erosion removal totally of product remained on surface, dried up immediately after rinsing sample surfaces using cleaning circulating water.Weigh sample
Quality is accurate to 0.1mg, as quality m after experiment1.Sample is put into the container of chrome pickle agent again and is cleaned,
Scavenging period is 2min, then washes, dries up, weighs, and mass difference is no more than 0.2mg twice, you can by m1After experiment
Sample quality.
(4) coating corrosion resistance calculates：It is front and back according to the effective length L of sample, diameter D, test period t and experiment
Example weight m0、m1, coating corrosion resistance calculating is carried out using the quality of coating loss of per area per time, then sample
Coating corrosion resistanceCalculating it is as follows：
Wherein：For coating corrosion resistance, m1For sample quality after experiment, m0For sample quality before experiment, D is the straight of sample
Diameter, L are the effective length of sample, and t is test period.
When corrosion resistance of the present invention for different-diameter steel wire or different coating is evaluated, the sample of sample can be carried out respectively
Product pretreatment, salt spray test, sample post-processing and coating corrosion resistance calculate.In the diameter of sample, effective length, experiment
Between it is different with coating when, can also carry out different samples corrosion resistance evaluation.
Compared with prior art, the beneficial effects of the invention are as follows：It is covered as steel cord end cutting area using compound AB glue
Layer, can effectively avoid influence of the cutting area to corrosion resistance.Using chrome pickle agent can effectively remove coating surface salt and
Erosion ensures the accuracy of corrosion resistance.It can be used for the quantitative assessment of steel wire coating corrosion resistance, also with can be used for not
With the corrosion resistance evaluation of diameter wire or different coating.
Specific implementation mode
The present invention relates to the detection methods of a kind of steel wire or steel wire rope coating corrosion resistance, and the method includes following works
Skill step：
Step 1：The preparation of sample
The coating wire or steel wire rope for intercepting appropriate length, are thoroughly cleaned up sample surfaces using alcohol swab, use is compound
AB glue protects the cutting area of steel wire and steel cord ends as coating.And record the effective length L and diameter of sample
D, length L are accurate to 1mm, and diameter D is accurate to 0.001mm.
Step 2：Samples weighing
It is the balance of a ten thousandth by samples weighing to use precision, and sample quality is accurate to 0.1mg, the experiment antecedent as sample
Measure m0。
Step 3：Neutral salt spray test
Sample after weighing is put into salt fog cabinet and carries out neutral salt spray test, and records test period t (it is recommended that test period is
300s).Experimental condition：Mass concentration 50g/L ± 5g/L of NaCl, pH value are 6.5 ~ 7.2,35 DEG C ± 2 DEG C of test temperature, spraying
Amount is per 80cm2Collecting amount be 1-2ml/h.
Step 4：Cleaning sample surface
Sample after salt spray test is immediately placed in the container of chrome pickle agent and is cleaned, make the remaining salt of sample surfaces and
Erosion removal is clean.Chrome pickle agent：A concentration of 200g/L ± 10g/L, 25 DEG C ± 5 DEG C of cleaning temperature.Sample surfaces remain
Salt and erosion removal it is clean after, sample surfaces are rinsed using cleaning circulating water, are then using gas at sample about 300mm
Air of the pressure no more than 200kPa dries up immediately.
Step 5：It weighs
It is the balance of a ten thousandth by the samples weighing after drying to use precision, and sample quality is accurate to 0.1mg, after experiment
Quality m1。
Sample is put into the container of chrome pickle agent again and is cleaned, then scavenging period 2min is washed, blown
It does, weigh, mass difference is no more than 0.2mg twice, you can as sample quality after experiment.
Step 6：It calculates
According to the example weight before and after the size of sample, test period and experiment, the calculating of the coating loss late of sample is as follows：
Coating loss late, the corrosion resistance of quantitative assessment steel wire and steel wire rope coating unit interval unit area.
Claims (4)
1. a kind of quantitative evaluation method of steel wire coating corrosion resistance, it is characterised in that：The method includes following technique steps
Suddenly：
Step 1：The preparation of sample
The coating wire or steel wire rope for intercepting appropriate length, clean sample surfaces using alcohol swab, to steel wire when cleaning
And the cutting area of steel cord ends is protected；And the effective length L and diameter D of sample are recorded, length L is accurate to 1mm, diameter
D is accurate to 0.001mm；
Step 2：Samples weighing
It is the balance of a ten thousandth by samples weighing to use precision, and sample quality is accurate to 0.1mg, the experiment antecedent as sample
Measure m0；
Step 3：Neutral salt spray test
Sample after weighing is put into salt fog cabinet and carries out neutral salt spray test, and records test period t；Experimental condition：NaCl's
Mass concentration 50g/L ± 5g/L, pH value are 6.5 ~ 7.2, and 35 DEG C ± 2 DEG C of test temperature, spray amount is per 80cm2Collecting amount be
1-2ml/h；
Step 4：Cleaning sample surface
Sample after salt spray test is immediately placed in the container of cleaning agent and is cleaned, the remaining salt of sample surfaces and corrosion are made
Object removal is clean；25 DEG C ± 5 DEG C of cleaning temperature；After the remaining salt of sample surfaces and erosion removal are clean, flowed using cleaning
Water rinses sample surfaces, then in the air blow drying for being no more than 200kPa with air pressure at sample about 300mm；
Step 5：It weighs
It is the balance of a ten thousandth by the samples weighing after drying to use precision, and sample quality is accurate to 0.1mg, after experiment
Quality m1；
Sample is put into the container of chrome pickle agent again and is cleaned, then scavenging period 2min is washed, dries up, claimed
Weight, mass difference is no more than 0.2mg twice, you can as sample quality after experiment；
Step 6：It calculates
According to the example weight before and after the size of sample, test period and experiment, the calculating of the coating loss late of sample is as follows：
。
2. a kind of quantitative evaluation method of steel wire coating corrosion resistance according to claim 1, it is characterised in that：For
The coating of swatched end cutting area protection is compound AB glue.
3. a kind of quantitative evaluation method of steel wire coating corrosion resistance according to claim 1 or 2, it is characterised in that：
The cleaning agent is chrome pickle agent, a concentration of 200g/L ± 10g/L.
4. a kind of quantitative evaluation method of steel wire coating corrosion resistance according to claim 1 or 2, it is characterised in that：
The coating includes zinc coat, aluminium coated, plating zinc-aluminium layer and chrome layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810232560.8A CN108562532A (en) | 2018-03-21 | 2018-03-21 | A kind of quantitative evaluation method of steel wire coating corrosion resistance |
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| CN201810232560.8A CN108562532A (en) | 2018-03-21 | 2018-03-21 | A kind of quantitative evaluation method of steel wire coating corrosion resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212820A (en) * | 2020-10-19 | 2021-01-12 | 中钢集团郑州金属制品研究院有限公司 | Method for measuring thickness of oxide layer on surface of steel wire |
| CN112285008A (en) * | 2020-10-19 | 2021-01-29 | 神龙汽车有限公司 | Method for evaluating filiform corrosion resistance of finish turning surface of aluminum wheel |
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| RU2354957C1 (en) * | 2007-11-02 | 2009-05-10 | Государственное образовательное учреждение высшего профессионального образования Военная академия Ракетных войск стратегического назначения имени Петра Великого | Method of evaluating tendency of alloys to stress-corrosion cracking |
| CN103353432A (en) * | 2013-06-14 | 2013-10-16 | 江苏法尔胜材料分析测试有限公司 | Detection method of plated layer corrosion rate in steel wire or steel wire rope |
| CN104266958A (en) * | 2014-10-09 | 2015-01-07 | 中国石油大学(华东) | Test method for evaluating corrosion resistance of coating |
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2018
- 2018-03-21 CN CN201810232560.8A patent/CN108562532A/en active Pending
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| RU2354957C1 (en) * | 2007-11-02 | 2009-05-10 | Государственное образовательное учреждение высшего профессионального образования Военная академия Ракетных войск стратегического назначения имени Петра Великого | Method of evaluating tendency of alloys to stress-corrosion cracking |
| CN103353432A (en) * | 2013-06-14 | 2013-10-16 | 江苏法尔胜材料分析测试有限公司 | Detection method of plated layer corrosion rate in steel wire or steel wire rope |
| CN104266958A (en) * | 2014-10-09 | 2015-01-07 | 中国石油大学(华东) | Test method for evaluating corrosion resistance of coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212820A (en) * | 2020-10-19 | 2021-01-12 | 中钢集团郑州金属制品研究院有限公司 | Method for measuring thickness of oxide layer on surface of steel wire |
| CN112285008A (en) * | 2020-10-19 | 2021-01-29 | 神龙汽车有限公司 | Method for evaluating filiform corrosion resistance of finish turning surface of aluminum wheel |
| CN112285008B (en) * | 2020-10-19 | 2023-08-29 | 神龙汽车有限公司 | Method for evaluating filiform corrosion resistance of finish turning surface of aluminum wheel |
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