CN108774733A - C55E spring steel ball annealings etchant solution, solution manufacturing method and application method - Google Patents
C55E spring steel ball annealings etchant solution, solution manufacturing method and application method Download PDFInfo
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- CN108774733A CN108774733A CN201810447310.6A CN201810447310A CN108774733A CN 108774733 A CN108774733 A CN 108774733A CN 201810447310 A CN201810447310 A CN 201810447310A CN 108774733 A CN108774733 A CN 108774733A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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Abstract
The present invention relates to C55E spring steel ball annealings etchant solution, solution manufacturing method and application method, raw material includes 3 ~ 6ml picric acid saturated aqueous solutions, 4 ~ 7ml concentrated nitric acids, 90 ~ 100ml absolute ethyl alcohols.By the way that etchant solution is applied to spring steel, the retention time is 2s ~ 4s, then cleans specimen surface with clear water, wipe alcohol drying i.e. it is corrodible go out spring steel crystal boundary.The present invention can clearly corrode the crystal boundary for C55E spring steel spherodized structures, obtain complete metallographic structure；In addition, using the metallographic etching agent, etching time is short, and corrosion step is simple.
Description
Technical field
The present invention relates to a kind of etchant solutions, more particularly to C55E spring steel balls annealing etchant solution, solution preparation side
Method and application method.
Background technology
C55E carbon spring steels are widely used in automobile with its excellent mechanical property, quenching degree and anti-fatigue performance
Interior trim clip, Automobile Timing Chains, the fields such as thrust bearing segment.In order to be suitable for precision punching process and obtain good
It is punched section, it is desirable that spheroidizing is carried out to cold-strip steel, while requiring material that there is specific mechanical property.Due to Oxygen potential
And the size of cementite has larger impact to follow-up quenching treatment, so at present to the material spheroidizing microscopic structure
Evaluation is concentrated mainly in the size of Oxygen potential and cementite, and has ignored the observation to ferrite grain size.Cold-rolled strip at present
The conventional use of 4% nitric acid alcohol etchant solution of steel manufacturing enterprise is only capable of corroding spheroidizing after in C55E cementite pattern
And distribution situation, and can not the corrosion of complete display go out its crystal boundary, cause not can determine that its grain size, i.e., can not completely really
Its fixed micro- metallographic structure.Technique determines tissue organization decided performance simultaneously, and metallographic structure is as connection Product Process and performance
Important tie, for optimized production process, adjustment mechanical property has indispensable directive function.
Current etchant solution can not complete display corrode the crystal boundary for C55E carbon spring steels, that is, be unable to get crystal grain
The quantitative data of degree so that cold rolled strip steel production enterprise can not optimize cold rolling and annealing production work by complete metallographic structure
Skill adjusts properties of product.This also improves production efficiency to enterprise's Reasonable Regulation And Control resources of production simultaneously, instructs the tempering of quenching of client
The new opplication of technique and later development C55E materials has apparent inhibition.
Invention content
The present invention in order to solve problems in the prior art, provides one kind and can clearly corrode and C55E spring steel nodularizations
The crystal boundary of tissue obtains complete metallographic structure, and etching time is short, the simple C55E spring steel balls annealing corrosion of corrosion step
Solution, solution manufacturing method and application method.
Specific technical solution is as follows：C55E spring steel ball annealing etchant solutions, which is characterized in that its raw material include 3 ~
6ml picric acid saturated aqueous solutions, 4 ~ 7ml concentrated nitric acids, 90 ~ 100ml absolute ethyl alcohols.Through the above technical solutions, etchant solution energy
It is enough that C55E spring steel corrosions are gone out into crystal boundary.
Preferably, the mass fraction 68% of the concentrated nitric acid.
Preferably, raw material includes 3.5ml picric acid saturated aqueous solutions, 4.5ml concentrated nitric acids, 90ml absolute ethyl alcohols.
Preferably, raw material includes 3ml picric acid saturated aqueous solutions, 7ml concentrated nitric acids, 100ml absolute ethyl alcohols.
Preferably, raw material includes 6ml picric acid saturated aqueous solutions, 4ml concentrated nitric acids, 90ml absolute ethyl alcohols.
The preparation method of C55E spring steel ball annealing etchant solutions, includes the following steps：（a）Prepare picric acid saturated water
Solution, into deionized water, addition picric acid is stirred, until having Precipitation；（b）Filter bitter taste acid deposit, you can
Obtain picric saturated aqueous solution；（c）90 ~ 100ml absolute ethyl alcohols are added；（d）Concentrated nitric acid and prepared picric acid is added
Saturated aqueous solution.Through the above technical solutions, can rapid preparing obtain etchant solution, production easy to process.
The application method of C55E spring steel ball annealing etchant solutions, which is characterized in that include the following steps：（S1）It will be rotten
It loses solution and is applied to spring steel, the retention time is 2s ~ 4s；（S2）Specimen surface is cleaned with clear water, then wipes alcohol drying.Pass through
Above-mentioned technical proposal facilitates etchant solution to use, and corrosion step is simple, and etching time is short.
Preferably, the step（S1）In, the retention time of etchant solution is 2s.
Preferably, the step（S1）In, the retention time of etchant solution is 3s.
Preferably, the step（S1）In, the retention time of etchant solution is 4s.
The technique effect of the present invention：The C55E spring steel ball annealings etchant solution of the present invention and makes solution manufacturing method
The crystal boundary for C55E spring steel spherodized structures can clearly be corroded with method, obtain complete metallographic structure；In addition, using should
Metallographic etching agent, etching time is short, and corrosion step is simple.
Description of the drawings
Fig. 1 is the schematic diagram after the C55E spring steel ball annealing etchant solution uses of the embodiment of the present invention 1.
Fig. 2 is that the 4% nitric acid alcohol corrosion of comparative example 1 of the present invention carries out the schematic diagram after deep etch.
Fig. 3 is that the 4% nitric acid alcohol corrosion of comparative example 2 of the present invention carries out the schematic diagram after shallow corrosion.
Specific implementation mode
In the following, the substantive distinguishing features and advantage of the present invention are further described in conjunction with example, but the present invention not office
It is limited to listed embodiment.
The C55E spring steel ball annealing etchant solutions of the present embodiment, raw material include 3 ~ 6ml picric acid saturated aqueous solutions,
4 ~ 7ml concentrated nitric acids, 90 ~ 100ml absolute ethyl alcohols.The picric acid saturated solution can be 3ml, 3.2ml, 3.5ml, 4ml or 6ml
Can be 4ml, 4.2ml, 5ml, 6ml or 7ml etc. Deng, the concentrated nitric acid, the absolute ethyl alcohol can be 90ml, 90.5ml,
95ml, 100ml etc..In above-mentioned technical proposal, picric acid saturated aqueous solution is made of by adding picric acid, picric acid in water
It is the trinitro- substituent of phenol, is influenced by nitro sucting electronic effect and have very strong acidity, picric acid and concentrated nitric acid can
Corrosiveness is played, electrolyte solution is equivalent in corrosion.The solution of Pass through above-mentioned technical proposal configuration, can be clearly rotten
The crystal boundary for losing C55E spring steel obtains complete metallographic structure.In the present embodiment, the mass fraction 68% of the concentrated nitric acid.
The preparation method of the C55E spring steel ball annealing etchant solutions of the present embodiment includes the following steps：（a）It prepares bitter
Sour saturated aqueous solution, into deionized water, addition picric acid is stirred, until having Precipitation；（b）Filter picric acid
Sediment, you can obtain picric saturated aqueous solution；（c）90 ~ 100ml absolute ethyl alcohols are added；（d）Concentrated nitric acid and preparation is added
Good picric acid saturated aqueous solution.C55E spring steel ball annealing etchant solutions are prepared through the above technical solutions, can facilitate.
The application method of the C55E spring steel ball annealing etchant solutions of the present embodiment, includes the following steps：（S1）It will be rotten
It loses solution and is applied to spring steel, the retention time is 2s ~ 4s；（S2）Specimen surface is cleaned with clear water, then wipes alcohol drying.Pass through
Above-mentioned application method can be such that C55E spring steel ball annealing etchant solutions clearly corrode and C55E spring steel nodularization groups
The crystal boundary knitted.
Embodiment 1
Etchant solution includes：3.5ml picric acid saturated aqueous solutions, 4.5ml concentrated nitric acids, 90ml absolute ethyl alcohols.
Etching time：2s.
Corrosive effect：Display of Grain Boundary is complete and clear（As shown in Figure 1）.
Embodiment 2
Etchant solution includes：3ml picric acid saturated aqueous solutions, 7ml concentrated nitric acids, 100ml absolute ethyl alcohols.
Etching time：3s.
Corrosive effect：Display of Grain Boundary is complete and clear.
Embodiment 3
Etchant solution includes：6ml picric acid saturated aqueous solutions, 4ml concentrated nitric acids, 90ml absolute ethyl alcohols.
Etching time：4s.
Corrosive effect：Display of Grain Boundary is complete and clear.
Comparative example 1
Etchant solution：Corroded using 4% nitric acid alcohol and carry out deep etch, Display of Grain Boundary is imperfect.
Etching time：6 ~ 8s of etching time.
Corrosive effect：Display of Grain Boundary is imperfect（As shown in Figure 2）.
Comparative example 2
Etchant solution：Shallow corrosion is carried out using the corrosion of 4% nitric acid alcohol.
Etching time：2 ~ 4s of etching time.
Corrosive effect：Crystal boundary is not shown（As shown in Figure 3）.
Table 1 is the summary sheet of embodiment and comparative example.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | |
| Etchant solution | 3.5ml picric acid saturated aqueous solutions, 4.5ml concentrated nitric acids, 90ml absolute ethyl alcohols | 3ml picric acid saturated aqueous solutions, the dense nitre of 7ml Acid, 100ml absolute ethyl alcohols | 6ml picric acid saturated aqueous solutions, 4ml Concentrated nitric acid, 90ml absolute ethyl alcohols | 4% nitric acid alcohol | 4% nitric acid wine Essence |
| Etching time | 2s | 3s | 4s | 6~8s | 2~4s |
| Corrosive effect | Display of Grain Boundary is complete and clear | Display of Grain Boundary is complete and clear | Display of Grain Boundary is complete and clear | Display of Grain Boundary is not Completely | Crystal boundary is not shown Show |
The C55E spring steel ball annealings etchant solution, solution manufacturing method and application method of the present embodiment can clearly corrode
The crystal boundary for going out C55E spring steel spherodized structures obtains complete metallographic structure；In addition, using the metallographic etching agent, etching time
Short, corrosion step is simple.
It is pointed out that the technical concepts and features of above-mentioned preferred embodiment only to illustrate the invention, its object is to
Those skilled in the art can understand the contents of the present invention and implements according to this, and the protection of the present invention can not be limited with this
Range.Any equivalent change or modification in accordance with the spirit of the invention should be covered by the protection scope of the present invention.
Claims (10)
1. C55E spring steel ball annealing etchant solutions, which is characterized in that its raw material includes 3 ~ 6ml picric acid saturated aqueous solutions,
4 ~ 7ml concentrated nitric acids, 90 ~ 100ml absolute ethyl alcohols.
2. C55E spring steel balls annealing etchant solution as described in claim 1, which is characterized in that the quality of the concentrated nitric acid
Score 68%.
3. C55E spring steel balls annealing etchant solution as described in claim 1, which is characterized in that raw material includes 3.5ml hardships
Sour saturated aqueous solution, 4.5ml concentrated nitric acids, 90ml absolute ethyl alcohols.
4. C55E spring steel balls annealing etchant solution as described in claim 1, which is characterized in that raw material includes 3ml bitter tastes
Sour saturated aqueous solution, 7ml concentrated nitric acids, 100ml absolute ethyl alcohols.
5. C55E spring steel balls annealing etchant solution as described in claim 1, which is characterized in that raw material includes 6ml bitter tastes
Sour saturated aqueous solution, 4ml concentrated nitric acids, 90ml absolute ethyl alcohols.
6. the preparation method of C55E spring steel ball annealing etchant solutions, which is characterized in that include the following steps：
（a）Picric acid saturated aqueous solution is prepared, picric acid is added into deionized water and is stirred, until having Precipitation；
（b）Filter bitter taste acid deposit, you can obtain picric saturated aqueous solution；
（c）90 ~ 100ml absolute ethyl alcohols are added；
（d）Concentrated nitric acid and prepared picric acid saturated aqueous solution is added.
7. the application method of C55E spring steel ball annealing etchant solutions, which is characterized in that include the following steps：
（S1）Etchant solution is applied to spring steel, the retention time is 2s ~ 4s；
（S2）Specimen surface is cleaned with clear water, then wipes alcohol drying.
8. C55E spring steel balls annealing etchant solution as claimed in claim 7, which is characterized in that the step（S1）In,
The retention time of etchant solution is 2s.
9. C55E spring steel balls annealing etchant solution as claimed in claim 7, which is characterized in that the step（S1）In,
The retention time of etchant solution is 3s.
10. C55E spring steel balls annealing etchant solution as claimed in claim 7, which is characterized in that the step（S1）In,
The retention time of etchant solution is 4s.
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| CN201810447310.6A CN108774733A (en) | 2018-05-11 | 2018-05-11 | C55E spring steel ball annealings etchant solution, solution manufacturing method and application method |
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| CN201810447310.6A CN108774733A (en) | 2018-05-11 | 2018-05-11 | C55E spring steel ball annealings etchant solution, solution manufacturing method and application method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880881A (en) * | 2010-06-13 | 2010-11-10 | 西南大学 | High aluminum zinc alloy etching agent and use method thereof |
| CN106404502A (en) * | 2016-08-30 | 2017-02-15 | 中车戚墅堰机车车辆工艺研究所有限公司 | Corrosive agent for displaying grain boundaries of high-damping manganese-based copper alloys and corrosion method thereof |
-
2018
- 2018-05-11 CN CN201810447310.6A patent/CN108774733A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880881A (en) * | 2010-06-13 | 2010-11-10 | 西南大学 | High aluminum zinc alloy etching agent and use method thereof |
| CN106404502A (en) * | 2016-08-30 | 2017-02-15 | 中车戚墅堰机车车辆工艺研究所有限公司 | Corrosive agent for displaying grain boundaries of high-damping manganese-based copper alloys and corrosion method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 彭成红主编: "《机械工程材料综合实验》", 31 March 2017, 华南理工大学出版社 * |
| 胡德林等: "Cr12MoV钢锻造过热过烧及对最终组织和性能影响研究", 《热加工工艺》 * |
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