CN101975742A - Low-power cold corrosion detection method - Google Patents
Low-power cold corrosion detection method Download PDFInfo
- Publication number
- CN101975742A CN101975742A CN 201010525352 CN201010525352A CN101975742A CN 101975742 A CN101975742 A CN 101975742A CN 201010525352 CN201010525352 CN 201010525352 CN 201010525352 A CN201010525352 A CN 201010525352A CN 101975742 A CN101975742 A CN 101975742A
- Authority
- CN
- China
- Prior art keywords
- sample
- testing
- cold
- detection method
- low
- 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.)
- Pending
Links
Abstract
The invention relates to a low-power cold corrosion detection method. 80 to 90 volume percent aqueous solution of hydrochloric acid is taken as a cold corrosion agent; a testing sample is put in an acid tank with the testing surface upward; and the testing sample and the testing surface are immersed in cold corrosion agent completely for 10 to 12 hours in summer and 18 to 24 hours in winter under a condition that the surface roughness of the testing surface meets requirements so as to obtain low-power tissues; the testing sample is taken out of the cold corrosion agent and is soaked in clean water for over one minute, and corrosion residues on the testing sample are carefully removed by using a banister brush; and in order to rapidly dry the testing surface, the testing surface of the cleaned testing sample is rapidly heated by boiling water and is dried by a hot air heater. The cold corrosion agent component has the characteristics that: the preparation is simple; the operating environment is safe; corrosion is prevented; and the like. In addition, the detection method is simple and practicable, delivers clear and reliable detection result, meets the requirements of low-power experiments and can be applied to low-power acid leaching tests for delocalized testing samples.
Description
Technical field
The invention belongs to the chemical analysis technology field, relate to a kind of macroscopic test chamber that is applied to the cold erosion detection method of the low power of the conventional pickling of steel.
Background technology
GB 226-1991 " macrostructure of steel and defective acid etching method of inspection " has stipulated hot acid and the cold acid etch method that the macroscopic test of steel is adopted.Wherein hot acid etch method is owing to be heated to higher temperature with strong acid, and the volatilization of acid gas makes experimental enviroment abominable, also can't drain acid gas fully even the forced exhaust device is installed, and picks and places sample in the hot acid and also easily causes potential safety hazard; Though cold acid etch method is carried out at normal temperatures, the cold erosion agent composition that standard provides is all comparatively complicated, and contains acid with strong oxidizing property, and the cold erosion agent term of validity is short, also is unfavorable for testing the cleaning of back sample.
No matter being hot acid or cold acid etch method, all is the principle of utilizing acid solution that the test face of sample is carried out selective corrosion, and the part that density is little has precedence over the big part of density is corroded, and makes test face form rough macrostructure pattern.According to the macrostructure pattern, the various gross imperfections and the rank thereof of decidable steel.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides the simple and cold erosion detection method of the clear reliable low power of testing result of a kind of detection method.
The present invention solves the technical method that its technical matters adopts: it is 80%～90% aqueous hydrochloric acid solution that the cold erosion detection method of a kind of low power, cold erosion agent adopt concentration of volume percent, and it detects step and is:
The first step: the test of sample faced up to be positioned in the acid tank, and cold erosion agent is submergence sample and test face fully;
Second step: under the satisfactory situation of surfaceness of test face, the etch time in summer is that 10～12 hours, etch time in winter are 18～24 hours, obtains satisfactory macrostructure;
The 3rd step: after sample takes out, should be immersed in the clear water placement more than 1 minute from cold erosion agent, carefully remove corrosion residue on the sample with banister brush then;
The 4th step: be rapid draing test face, the sample after the cleaning dries up with calorifier then with the rapid heat test face of boiling water.
The method of Fast Heating test face adopts and directly puts into boiling water or water the test face of pouring with boiling water in described the 4th step.
The invention has the beneficial effects as follows: cold erosion agent composition of the present invention has that configuration is simple, operation environment safety, be difficult for characteristics such as excessive erosion; Detection method is simple, and testing result is clear reliable, has reached the low power experimental requirements, can be applicable to the low power pickle test of non-arbitration sample.
Embodiment
The present invention is further described below in conjunction with embodiment.
The cold erosion detection method of a kind of low power, cold erosion agent employing concentration of volume percent is 80%～90% aqueous hydrochloric acid solution, adopting aqueous hydrochloric acid solution is to have reductibility because of hydrochloric acid as mordant, volatility is less relatively under the normal temperature, environmental pollution is less, test back sample is easy to clean and be difficult for oxidation, and the holding time is longer.
It detects step:
The first step: the test of sample faced up to be positioned in the acid tank, and cold erosion agent is submergence sample and test face fully;
Second step: under the satisfactory situation of surfaceness of test face, the etch time in summer is 10～12 hours, and the etch time in winter is 18～24 hours, obtains satisfactory macrostructure;
The 3rd step: after sample takes out, should be immersed in the clear water placement more than 1 minute from cold erosion agent, carefully remove corrosion residue on the sample with banister brush then;
The 4th step: be rapid draing test face, the sample after the cleaning dries up with calorifier then with the rapid heat test face of boiling water, and the method for Fast Heating test face adopts directly to be put into boiling water or water the test face of pouring with boiling water.
Compare with test method with standard etchant composition, cold erosion agent composition of the present invention has that configuration is simple, operation environment safety and be difficult for the characteristics such as excessive erosion; Test method is simple, and result of the test is clear reliable, has reached the requirement of low power experiment, and the present invention can be applicable to the macroscopic test chamber to the conventional pickling of steel.
Claims (2)
1. cold erosion detection method of low power is characterized in that: it is 80%～90% aqueous hydrochloric acid solution that concentration of volume percent is adopted in cold erosion agent, and it detects step and is:
The first step: the test of sample faced up to be positioned in the acid tank, and cold erosion agent is submergence sample and test face fully;
Second step: under the satisfactory situation of surfaceness of test face, the etch time in summer is that 10～12 hours, etch time in winter are 18～24 hours, obtains satisfactory macrostructure;
The 3rd step: after sample takes out, should be immersed in the clear water placement more than 1 minute from cold erosion agent, carefully remove corrosion residue on the sample with banister brush then;
The 4th step: be rapid draing test face, the sample after the cleaning dries up with calorifier then with the rapid heat test face of boiling water.
2. the cold erosion detection method of low power as claimed in claim 1 is characterized in that: the method for Fast Heating test face adopts and directly puts into boiling water or water the test face of pouring with boiling water in described the 4th step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010525352 CN101975742A (en) | 2010-10-31 | 2010-10-31 | Low-power cold corrosion detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010525352 CN101975742A (en) | 2010-10-31 | 2010-10-31 | Low-power cold corrosion detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101975742A true CN101975742A (en) | 2011-02-16 |
Family
ID=43575645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010525352 Pending CN101975742A (en) | 2010-10-31 | 2010-10-31 | Low-power cold corrosion detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101975742A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674825A (en) * | 2013-12-12 | 2014-03-26 | 中国航空工业集团公司第六三一研究所 | Detection method for pollution tolerance of liquid cooling quick connector |
| CN104087940A (en) * | 2014-07-04 | 2014-10-08 | 山西太钢不锈钢股份有限公司 | Acid etching method for revealing macrostructure and defects of corrosion-resistant alloy |
| WO2015078347A1 (en) * | 2013-11-30 | 2015-06-04 | 中国科学院金属研究所 | Corrosion reagent for detecting steel macrostructure and defect, and detection method |
| CN113702271A (en) * | 2021-07-29 | 2021-11-26 | 浙江野马电池股份有限公司 | Method and device for testing alkali resistance of resin for alkali-manganese battery conductive agent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539497A (en) * | 2008-12-17 | 2009-09-23 | 马鞍山钢铁股份有限公司 | Hot acid electrolytic corrosion method for macroscopic examination of metal samples |
-
2010
- 2010-10-31 CN CN 201010525352 patent/CN101975742A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539497A (en) * | 2008-12-17 | 2009-09-23 | 马鞍山钢铁股份有限公司 | Hot acid electrolytic corrosion method for macroscopic examination of metal samples |
Non-Patent Citations (1)
| Title |
|---|
| 《机械工人（热加工)》 19930829 毕秀波 用冷酸洗法代替热酸洗法检查GCr15钢的低倍组织缺陷 第27页 1-2 , 第8期 2 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015078347A1 (en) * | 2013-11-30 | 2015-06-04 | 中国科学院金属研究所 | Corrosion reagent for detecting steel macrostructure and defect, and detection method |
| CN103674825A (en) * | 2013-12-12 | 2014-03-26 | 中国航空工业集团公司第六三一研究所 | Detection method for pollution tolerance of liquid cooling quick connector |
| CN103674825B (en) * | 2013-12-12 | 2016-02-24 | 中国航空工业集团公司第六三一研究所 | Liquid cooling rapid-acting coupling Contamination sensitivity detection method |
| CN104087940A (en) * | 2014-07-04 | 2014-10-08 | 山西太钢不锈钢股份有限公司 | Acid etching method for revealing macrostructure and defects of corrosion-resistant alloy |
| CN104087940B (en) * | 2014-07-04 | 2016-07-06 | 山西太钢不锈钢股份有限公司 | A kind of corrosion resistant alloy macrostructure and defect manifest acid etching method |
| CN113702271A (en) * | 2021-07-29 | 2021-11-26 | 浙江野马电池股份有限公司 | Method and device for testing alkali resistance of resin for alkali-manganese battery conductive agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104005026B (en) | A kind of method of preparing corrosion-resistant super-hydrophobic rete at Mg alloy surface | |
| CN101975742A (en) | Low-power cold corrosion detection method | |
| CN105603409A (en) | Normal-temperature alkaline chromium-free passivation solution and passivation method for aluminum alloy | |
| WO2016201936A1 (en) | Surface passivation method for stainless steel product | |
| CN102259087B (en) | Method for preparing anticorrosion superhydrophobic surface of brass | |
| CN105300774A (en) | Display method of F/M heat resistant steel welded joint heat affected zone original austenite grain boundary | |
| CN104611751A (en) | Micro-arc oxidation self-assembly composite membrane layer on surface of magnesium alloy and preparation method of micro-arc oxidation self-assembly composite membrane layer | |
| CN106404502A (en) | Corrosive agent for displaying grain boundaries of high-damping manganese-based copper alloys and corrosion method thereof | |
| CN102268662B (en) | A kind of preparation method of the cupronickel B 30 of the super hydrophobic surface with corrosion inhibition | |
| CN103604682B (en) | Show the test method of ferrous materials macrostructure and defect | |
| CN101469430A (en) | Cleaning technology for stainless steel packing of cold accumulator | |
| CN104289402B (en) | There is the preparation method of the brass super hydrophobic surface of corrosion resisting property | |
| CN100424836C (en) | Process for producing rectifier tube chip by one time coating source full spreading | |
| CN101587040B (en) | Macroscopic defect cold etching visualizing reagent | |
| CN105628474B (en) | Preparation method, sample, reagent and the preparation method of aluminum steel composite material grain structure | |
| CN104313533A (en) | Ultrasonic frequency induction heating technology based quick hot-dipping aluminizing technology | |
| CN110320088B (en) | Metallographic corrosion method for rapidly displaying special steel crystal boundary | |
| CN106226145A (en) | A kind of method removing iron and steel inefficacy fracture surface covering | |
| CN102500533B (en) | Method for coating corrosion-resistant paint on surface of steel | |
| CN102489439A (en) | Method for preparing super-hydrophobic copper sheet | |
| CN112281166B (en) | High-temperature environment-friendly alkali sand aluminum profile surface treatment process | |
| CN101672752B (en) | Method for detecting resistance of solar cells to corrosion of water vapor | |
| CN104611750A (en) | Electrochemical preparation method of black magnesium alloy conversion film | |
| CN104975294A (en) | Metallographic phase corrosive agent suitable for silver-palladium copper alloy, and preparation method and use method thereof | |
| CN103900959A (en) | Macroscopic inspection method of rolled titanium-steel composite plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110216 |