CN112442692A - 32Cr3MoVE material grain size corrosion method - Google Patents
32Cr3MoVE material grain size corrosion method Download PDFInfo
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- CN112442692A CN112442692A CN202011420076.1A CN202011420076A CN112442692A CN 112442692 A CN112442692 A CN 112442692A CN 202011420076 A CN202011420076 A CN 202011420076A CN 112442692 A CN112442692 A CN 112442692A
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- 32cr3move
- grain size
- sodium hydroxide
- potassium permanganate
- perchloric acid
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/28—Acidic compositions for etching iron group metals
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/40—Alkaline compositions for etching other metallic material
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- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A32 Cr3MoVE material grain size corrosion method relates to a steel material grain size corrosion method. The invention aims to solve the problem that the crystal grain size of 32Cr3MoVE material is corroded by picric acid which is a raw material of explosive and is not stored properly and is easy to cause danger in the prior art. The method comprises the following steps: and soaking the 32Cr3MoVE material in a perchloric acid ethanol solution at room temperature, and then soaking the 32Cr3MoVE material in a potassium permanganate/sodium hydroxide solution to obtain the 32Cr3MoVE material with corroded crystal grains. The method is suitable for grain size corrosion of 32Cr3MoVE materials.
Description
Technical Field
The invention relates to a method for grain size corrosion of steel materials.
Background
The crystal grain size corrosion method originally used for the 32Cr3MoVE material is to boil picric acid by heating and soak the picric acid for a plurality of minutes after boiling. However, the picric acid is made of trinitrophenol which is an explosive raw material and is unsafe and dangerous due to improper storage, so that a proper solvent capable of replacing the picric acid needs to be found for carrying out grain size corrosion on the existing 32Cr3MoVE material to realize grain boundary corrosion of the 32Cr3MoVE material.
Disclosure of Invention
The invention aims to solve the problems that the crystal grain size of 32Cr3MoVE material is corroded by picric acid which is a raw material of explosive and is not stored properly and is easy to cause danger in the prior art, and provides a method for corroding the crystal grain size of 32Cr3MoVE material.
A method for grain size corrosion of 32Cr3MoVE material is completed according to the following steps:
firstly, soaking a 32Cr3MoVE material in a perchloric acid ethanol solution at room temperature to obtain a 32Cr3MoVE material soaked in the perchloric acid ethanol solution;
and secondly, soaking the 32Cr3MoVE material soaked in the perchloric acid ethanol solution in a potassium permanganate/sodium hydroxide solution at room temperature to obtain the 32Cr3MoVE material with corroded crystal grains.
The invention has the advantages that:
the method adopts perchloric acid ethanol solution and potassium permanganate/sodium hydroxide solution to corrode the grain size of the 32Cr3MoVE material, can effectively corrode the prior austenite grain boundary, and can clearly display the lath martensite structure in the grains, so the method can completely replace the existing method for corroding the grain size of the 32Cr3MoVE material by picric acid, and has the advantages of simplicity, rapidness and safety.
Drawings
FIG. 1 is a microscopic view of the grain-etched 32Cr3MoVE material obtained in the first example.
Detailed Description
The following examples further illustrate the present invention but are not to be construed as limiting the invention. Modifications and substitutions to methods, procedures, or conditions of the invention may be made without departing from the spirit of the invention.
The first embodiment is as follows: the method for grain size corrosion of the 32Cr3MoVE material in the embodiment is completed according to the following steps:
firstly, soaking a 32Cr3MoVE material in a perchloric acid ethanol solution at room temperature to obtain a 32Cr3MoVE material soaked in the perchloric acid ethanol solution;
and secondly, soaking the 32Cr3MoVE material soaked in the perchloric acid ethanol solution in a potassium permanganate/sodium hydroxide solution at room temperature to obtain the 32Cr3MoVE material with corroded crystal grains.
The potassium permanganate/sodium hydroxide solution in this embodiment mainly serves for the purpose of clarification.
The second embodiment is as follows: the present embodiment differs from the present embodiment in that: the soaking time in the step one is 1-2 h. Other steps are the same as in the first embodiment.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the soaking time in the step one is 1-1.5 h. The other steps are the same as in the first or second embodiment.
The fourth concrete implementation mode: the difference between this embodiment and one of the first to third embodiments is as follows: the mass fraction of the perchloric acid ethanol solution in the step one is 5-10%. The other steps are the same as those in the first to third embodiments.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: the mass fraction of the perchloric acid ethanol solution in the step one is 5-8%. The other steps are the same as those in the first to fourth embodiments.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is as follows: the soaking time in the step two is 10 min-30 min. The other steps are the same as those in the first to fifth embodiments.
The seventh embodiment: the difference between this embodiment and one of the first to sixth embodiments is: the soaking time in the step two is 10 min-20 min. The other steps are the same as those in the first to sixth embodiments.
The specific implementation mode is eight: the difference between this embodiment and one of the first to seventh embodiments is: and the potassium permanganate/sodium hydroxide solution in the second step is formed by mixing potassium permanganate, sodium hydroxide and deionized water. The other steps are the same as those in the first to seventh embodiments.
The specific implementation method nine: the difference between this embodiment and the first to eighth embodiments is: and the mass ratio of the potassium permanganate in the potassium permanganate/sodium hydroxide solution to the deionized water in the step two is (2 g-4 g) - (50 mL-100 mL), and the mass ratio of the sodium hydroxide to the deionized water is (2 g-4 g) - (50 mL-100 mL). The other steps are the same as those in the first to eighth embodiments.
The detailed implementation mode is ten: the difference between this embodiment and one of the first to ninth embodiments is as follows: the mass ratio of the potassium permanganate in the potassium permanganate/sodium hydroxide solution in the step two to the volume of the deionized water is 3g (50 mL-100 mL), and the mass ratio of the sodium hydroxide to the volume of the deionized water is 3g (50 mL-100 mL). The other steps are the same as those in the first to ninth embodiments.
The following examples were used to demonstrate the beneficial effects of the present invention:
the first embodiment is as follows: a method for grain size corrosion of 32Cr3MoVE material is completed according to the following steps:
firstly, soaking a 32Cr3MoVE material in a perchloric acid ethanol solution with the mass fraction of 5% for 1h at room temperature to obtain the 32Cr3MoVE material soaked in the perchloric acid ethanol solution;
soaking the 32Cr3MoVE material soaked in the perchloric acid ethanol solution in a potassium permanganate/sodium hydroxide solution for 10min at room temperature to obtain a 32Cr3MoVE material with corroded crystal grains;
and the volume ratio of the mass of the potassium permanganate in the potassium permanganate/sodium hydroxide solution to the volume of the deionized water in the step two is 4g:100mL, and the volume ratio of the mass of the sodium hydroxide to the volume of the deionized water is 4g:100 mL.
FIG. 1 is a microscopic view of the grain-etched 32Cr3MoVE material obtained in the first example.
As can be seen from FIG. 1, the grain boundaries are obvious, and the method of the first embodiment can effectively corrode the prior austenite grain boundaries, and clearly shows the intragranular lath martensite structure.
Claims (10)
1. A method for grain size corrosion of a 32Cr3MoVE material is characterized in that the method for grain size corrosion of the 32Cr3MoVE material is completed according to the following steps:
firstly, soaking a 32Cr3MoVE material in a perchloric acid ethanol solution at room temperature to obtain a 32Cr3MoVE material soaked in the perchloric acid ethanol solution;
and secondly, soaking the 32Cr3MoVE material soaked in the perchloric acid ethanol solution in a potassium permanganate/sodium hydroxide solution at room temperature to obtain the 32Cr3MoVE material with corroded crystal grains.
2. The method of claim 1, wherein the first step comprises a soaking time of 1-2 hours.
3. The method of claim 2, wherein the first step comprises a soaking time of 1-1.5 hours.
4. The method of claim 1, wherein the ethanol solution of perchloric acid in the first step is 5-10% by weight.
5. The method of claim 4, wherein the ethanol solution of perchloric acid in the first step is 5-8% by weight.
6. The method of claim 1, wherein the soaking time in step two is 10-30 min.
7. The method of claim 6, wherein the soaking time in step two is 10-20 min.
8. The method of claim 1, wherein the potassium permanganate/sodium hydroxide solution in step two is a mixture of potassium permanganate, sodium hydroxide, and deionized water.
9. The method of claim 1, wherein the ratio of the mass of potassium permanganate in the potassium permanganate/sodium hydroxide solution to the volume of deionized water is (2 g-4 g) - (50 mL-100 mL), and the ratio of the mass of sodium hydroxide to the volume of deionized water is (2 g-4 g) - (50 mL-100 mL).
10. The method of claim 9, wherein the volume ratio of the mass of potassium permanganate in the potassium permanganate/sodium hydroxide solution to the volume of deionized water in the step two is 3g (50 mL-100 mL), and the volume ratio of the mass of sodium hydroxide to the volume of deionized water in the step two is 3g (50 mL-100 mL).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095148A (en) * | 2006-10-12 | 2008-04-24 | The Inctec Inc | Etching solution and method for producing black matrix |
| CN104111230A (en) * | 2014-06-19 | 2014-10-22 | 中国科学院金属研究所 | Classified display and quantitative detection method for martensite and residual austenite in M-A island |
| CN106609318A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Refining method for grain size of 32Cr3MoVE forge piece |
| CN110470525A (en) * | 2019-08-02 | 2019-11-19 | 江苏科技大学 | Show the aggressive agent and corrosion method of IF steel crystal boundary |
| CN111562202A (en) * | 2020-05-28 | 2020-08-21 | 中国兵器工业第五二研究所烟台分所有限责任公司 | Method for detecting grain size of 6-series aluminum alloy |
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2020
- 2020-12-07 CN CN202011420076.1A patent/CN112442692B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095148A (en) * | 2006-10-12 | 2008-04-24 | The Inctec Inc | Etching solution and method for producing black matrix |
| CN104111230A (en) * | 2014-06-19 | 2014-10-22 | 中国科学院金属研究所 | Classified display and quantitative detection method for martensite and residual austenite in M-A island |
| CN106609318A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Refining method for grain size of 32Cr3MoVE forge piece |
| CN110470525A (en) * | 2019-08-02 | 2019-11-19 | 江苏科技大学 | Show the aggressive agent and corrosion method of IF steel crystal boundary |
| CN111562202A (en) * | 2020-05-28 | 2020-08-21 | 中国兵器工业第五二研究所烟台分所有限责任公司 | Method for detecting grain size of 6-series aluminum alloy |
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