CN105865882B - Show the etching method of quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent - Google Patents
Show the etching method of quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent Download PDFInfo
- Publication number
- CN105865882B CN105865882B CN201610181219.5A CN201610181219A CN105865882B CN 105865882 B CN105865882 B CN 105865882B CN 201610181219 A CN201610181219 A CN 201610181219A CN 105865882 B CN105865882 B CN 105865882B
- Authority
- CN
- China
- Prior art keywords
- corrosive agent
- molybdenum steel
- low
- absorbent cotton
- alloy chrome
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention provides a kind of etching method of display quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent, and this method step is：The preparation of corrosive agent；It is put into absorbent cotton into the glass dish for hold corrosive agent, absorbent cotton is made to adsorb corrosive agent；Will polishing and polished low-alloy chrome molybdenum steel curved beam, immersed in corrosive agent after cleaning up drying, polishing is placed on absorbent cotton down, and immersion 10 15 minutes cleans up sample taking-up with clear water, then with washes of absolute alcohol and is dried up；It grades under the microscope to the low-alloy chrome-molybdenum steel autstenitic grain size of quality adjustment condition.Advantageous effect is that this method corrosive agent prepares simplicity, is not necessarily to heating water bath, it is only necessary to can be suitably applied within 10 15 minutes the upper high-volume of production and evaluate grain size number.Operation is safer, more convenient.
Description
Technical field
The present invention relates to a kind of metallographic etching agents, and in particular, to a kind of display quality adjustment condition low-alloy chrome-molybdenum steel Ovshinsky
The etching method of body crystal particle crystal boundary corrosive agent.
Background technology
Grain size is to indicate an important feature of Steel Properties in steel, it significantly affects the impact flexibility, intensity, plasticity of steel
And Cutting free processing performance etc..Therefore detection austenite grain size has great importance.
Its metallographic structure of quenched and tempered state low-alloy chrome-molybdenum steel is mostly tempered sorbite, has part tempering bainite sometimes.At present
For quality adjustment condition low-alloy chrome-molybdenum steel autstenitic grain size evaluation, the corrosive agent used be containing picric solution, including
Picral and bitter taste aqueous acid add suitable dodecyl sodium sulfate or detergent as corrosive agent
Etc. other reagents.
Picric acid, 2.4.6- trinitrophenols are one kind of explosive, and abridge TNP, PA, and pure substance is yellowish at room temperature
Crystallization, bitter is toxic, there is violent explosion, have prodigious security risk.Its manufacture, sale, purchase, using, hold,
Storage, transport must all follow strictly explosive management rule, belong to controlled drug.For safety and it is easy to buy angle, choosing
Selecting just is particularly important without using picric corrosive agent to corrode autstenitic grain size.
Invention content
In view of above-mentioned existing grain boundary corrosion agent using picric acid there are the shortcomings that, the purpose of the present invention is to provide one kind is aobvious
Show that the etching method of quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent, the corrosive agent do not use picric acid, it can
So that the crystal boundary in the low-alloy chrome molybdenum structure of steel of quality adjustment condition is clearly continuous, but it will not so that metallographic structure is apparent again simultaneously
Display.
To achieve the above object, the technical scheme is that providing a kind of display quality adjustment condition low-alloy chrome-molybdenum steel Ovshinsky
The etching method of body crystal particle crystal boundary corrosive agent, wherein：This method carries out according to the following steps：
The first step, the preparation of corrosive agent, the corrosive agent proportioning are：Sulfosalicylic acid 8-15g, water 100mL, 0.1-1mL
4% nitric acid alcohol of mass percent concentration, 0.2-5mL liquid detergents；The nitric acid wine that configuration quality percent concentration is 4% first
Then 8-15g sulfosalicylic acids are dissolved in 100mL water according to the corrosive agent ratio, stir evenly, and pour into glass by essence
In glass ware, the nitric acid alcohol of 0.2-5mL liquid detergents and 0.1-1mL configurations is added；
Second step is put into absorbent cotton into the glass dish for hold corrosive agent, and absorbent cotton is made to adsorb corrosive agent；
Third walks, and polishing and polished low-alloy chrome molybdenum steel curved beam are immersed after cleaning up drying in corrosive agent,
Polishing is placed on absorbent cotton down, is impregnated 10-15 minutes, sample taking-up is cleaned up with clear water, then with anhydrous second
Alcohol is cleaned and is dried up；
4th step under the microscope grades to the low-alloy chrome-molybdenum steel autstenitic grain size of quality adjustment condition.
Beneficial effects of the present invention are as follows：
The etching method of the corrosive agent of the low-alloy chrome-molybdenum steel austenite grain boundary of modifier treatment of the present invention, corrosive agent
Picric acid is not used, and takes sulfosalicylic acid that is safer and being easy to purchase as main additive.There is no picric acid
The security risk of drug, and simplicity is prepared, it is not necessarily to heating water bath, eliminates heating water bath equipment, etching time is short, it is only necessary to
10-15 minutes, therefore cost and the time of half can be saved.The drug configured can be placed in closed container and protect
Deposit, when corrosion, directly pours into glass dish, and sample is impregnated 10-15 minute, convenient and efficient, be suitably applied production go up it is big
Batch evaluation grain size number.The present invention is relative to existing corrosive agent, and safer, operation is more convenient.
Description of the drawings
The corrosive agent that Fig. 1 is prepared in the example 1 for the present invention corrodes quality adjustment condition 26CrMo4 steel austenite grain boundary photos；
The corrosive agent that Fig. 2 is prepared in the example 2 for the present invention corrodes quality adjustment condition 27CrMo47Vs steel austenite grain boundaries and shines
Piece；
The corrosive agent that Fig. 3 is prepared in the example 3 for the present invention corrodes quality adjustment condition 27CrMo44s steel austenite grain boundaries and shines
Piece.
Specific implementation mode
In conjunction with attached drawing to the etch side of the corrosive agent of the display quenched and tempered state low-alloy chrome-molybdenum steel autstenitic grain size of the present invention
Method is illustrated.
The etching method of the display quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent of the present invention, this method
It carries out according to the following steps：
The first step, the preparation of corrosive agent, the corrosive agent proportioning are：Sulfosalicylic acid 8-15g, water 100mL, 0.1-1mL
4% nitric acid alcohol of mass percent concentration, 0.2-5mL liquid detergents；The nitric acid wine that configuration quality percent concentration is 4% first
Then 8-15g sulfosalicylic acids are dissolved in 100mL water according to the corrosive agent ratio, stir evenly, and pour into glass by essence
In glass ware, the nitric acid alcohol of 0.2-5mL liquid detergents and 0.1-1mL configurations is added；
Second step is put into absorbent cotton into the glass dish for hold corrosive agent, and absorbent cotton is made to adsorb corrosive agent；
Third walks, and polishing and polished low-alloy chrome molybdenum steel curved beam are immersed after cleaning up drying in corrosive agent,
Polishing is placed on absorbent cotton down, is impregnated 10-15 minutes, sample taking-up is cleaned up with clear water, then with anhydrous second
Alcohol is cleaned and is dried up；
4th step under the microscope grades to the low-alloy chrome-molybdenum steel autstenitic grain size of quality adjustment condition.
Liquid detergent of the present invention includes following brand：White cat, blue moon, carving board, vertical white, dab hand, strong, Amway
Deng.
Embodiment 1
This example uses material for the low-alloy chrome-molybdenum steel of 26CrMo4, and the mass percent of ingredient is C 0.24%-
0.27%, Si 0.23%-0.28%, Mn 0.89%-0.94%, Cr 0.84%-0.92%, Mo0.16%-0.19%.It adjusts
Matter processing.
The proportioning of metallographic etching agent is：Sulfosalicylic acid 8g, water 100mL, the nitric acid alcohol 1mL of mass percent 4%, are washed
Clean essence 0.5mL.
Etch is carried out according to the following steps：
1. sample making：After the sample of well cutting is polished using sample grinding machine, it is polished using W2.5 antiscuffing pastes, makes mill
Face becomes the smooth mirror surface of no marking.
2. corrosive agent matches：The nitric acid alcohol that configuration quality percent concentration is 4% first, then by 8g sulfosalicylic acids
It is dissolved in 100mL water, stirs evenly, be poured into glass dish, 1mL nitric acid alcohol is added thereto, and (mass percent is dense
Degree allows absorbent cotton to draw corrosive agent for 4%), then 0.5mL liquid detergents are put into absorbent cotton thereto.
3. corrosion：By polishing and polished low-alloy chrome molybdenum steel curved beam, immersed in corrosive agent after cleaning up drying,
Detection is placed on absorbent cotton down, is impregnated 10 minutes, is then taken out sample, is cleaned up then with anhydrous second with clear water
Alcohol is cleaned and is dried up, and is then observed under microscope again.
Optical microphotograph microscopic observation austenite structure is as shown in Figure 1.It can be seen that the austenite of the 26CrMo4 steel of quenched and tempered state
Crystal boundary clearly displays, and organizes not display.According to standard GB/T6394-2002《Metal mean grain size measurement side
Method》It grades, grain size number is 8.5 grades.
Embodiment 2
This example uses material for the low-alloy chrome-molybdenum steel of 27CrMo47Vs, and the mass percent of ingredient is C
0.24%-0.27%, Si 0.23%-0.31%, Mn 0.40%-0.49%, Cr0.96%-1.01%, Mo0.74%-
0.80%.Modifier treatment.
The proportioning of metallographic etching agent is：Sulfosalicylic acid 10g, water 100mL, 0.5mL nitric acid alcohol (mass percent concentration
For 4%), liquid detergent 1mL.
Etch is carried out according to the following steps：
1. sample making：After the sample of well cutting is polished using sample grinding machine, it is polished using W2.5 antiscuffing pastes, makes mill
Face becomes the smooth mirror surface of no marking.
2. corrosive agent matches：The nitric acid alcohol that configuration quality percent concentration is 4% first, then by 15g sulfosalisylics
Acid is dissolved in 100mL water, is stirred evenly, and is poured into glass dish, and 0.5mL nitric acid alcohol (quality percentage is added thereto
Specific concentration is that 4%), then 1mL liquid detergents are put into absorbent cotton thereto, and absorbent cotton is allowed to draw corrosive agent.
3. corrosion：By polishing and polished low-alloy chrome molybdenum steel curved beam, immersed in corrosive agent after cleaning up drying,
Polishing is placed on absorbent cotton down, is impregnated 15 minutes, is then taken out sample, is cleaned up then with anhydrous second with clear water
Alcohol is cleaned and is dried up, and is observed under the microscope.
Optical microphotograph microscopic observation austenite structure is as shown in Figure 2.It can be seen that Austria of the 27CrMo47Vs steel of quenched and tempered state
Family name's body crystal boundary clearly displays, and organizes not display.According to standard GB/T6394-2002《Metal mean grain size is surveyed
Determine method》It grades, grain size number is 8.5 grades.
Embodiment 3
This example uses material for the low-alloy chrome-molybdenum steel of 27CrMo44s, and the mass percent of ingredient is C 0.25%-
0.28%, Si 0.21%-0.26%, Mn 0.62%-0.70%, Cr1.02%-1.10%, Mo0.40%-0.43%.It is quenched
Processing.
The proportioning of metallographic etching agent is：Sulfosalicylic acid 10g, water 100mL, 0.3mL nitric acid alcohol (mass percent concentration
For 4%), 1mL liquid detergents.
Etch is carried out according to the following steps：
1. sample making：After the sample of well cutting is polished using sample grinding machine, it is polished using W2.5 antiscuffing pastes, makes mill
Face becomes the smooth mirror surface of no marking.
2. corrosive agent matches：The nitric acid alcohol that configuration quality percent concentration is 4% first, then by 10g sulfosalisylics
Acid is dissolved in 100mL water, is stirred evenly, and is poured into glass dish, and 0.3mL nitric acid alcohol (quality percentage is added thereto
Specific concentration 4%), then 1mL liquid detergents are put into absorbent cotton thereto, absorbent cotton is allowed to draw corrosive agent.
3. corrosion：By polishing and polished low-alloy chrome molybdenum steel curved beam, immersed in corrosive agent after cleaning up drying,
Polishing is placed on absorbent cotton down, is impregnated 15 minutes, is then taken out sample, is cleaned up then with anhydrous second with clear water
Alcohol is cleaned and is dried up, and is then observed under the microscope.
Optical microphotograph microscopic observation austenite structure is as shown in Figure 3.It can be seen that the Ovshinsky of the 27CrMo44s steel of quenched and tempered state
Body crystal boundary clearly displays, and organizes not display.According to standard GB/T6394-2002《Metal mean grain size is surveyed
Determine method》It grades, grain size number is 8.5 grades.
Claims (1)
1. a kind of etching method of display quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent, it is characterized in that：It should
Method carries out according to the following steps：
The first step, the preparation of corrosive agent, the corrosive agent proportioning are：Sulfosalicylic acid 8-15g, water 100mL, 0.1-1mL mass
4% nitric acid alcohol of percent concentration, 0.2-5mL liquid detergents；The nitric acid alcohol that configuration quality percent concentration is 4% first, so
8-15g sulfosalicylic acids are dissolved in 100mL water according to the corrosive agent ratio afterwards, are stirred evenly, and pour into glass dish
In, add the nitric acid alcohol of 0.2-5mL liquid detergents and 0.1-1mL configurations；
Second step is put into absorbent cotton into the glass dish for hold corrosive agent, and absorbent cotton is made to adsorb corrosive agent, will polish and polished
Low-alloy chrome molybdenum steel curved beam, clean up drying after immerse corrosive agent in, polishing be placed on absorbent cotton down, immersion
10-15 minutes, sample taking-up is cleaned up with clear water, then with washes of absolute alcohol and is dried up；
Third walks, under the microscope to the low-alloy chrome-molybdenum steel autstenitic grain size of quality adjustment condition according to standard GB/T6394-
2002《Metal mean grain size assay method》It grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181219.5A CN105865882B (en) | 2016-03-25 | 2016-03-25 | Show the etching method of quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181219.5A CN105865882B (en) | 2016-03-25 | 2016-03-25 | Show the etching method of quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105865882A CN105865882A (en) | 2016-08-17 |
| CN105865882B true CN105865882B (en) | 2018-10-02 |
Family
ID=56625036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610181219.5A Active CN105865882B (en) | 2016-03-25 | 2016-03-25 | Show the etching method of quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105865882B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756510B (en) * | 2017-01-03 | 2018-06-19 | 华东交通大学理工学院 | A kind of etchant for showing low-alloy wear-resistant steel original austenite crystal prevention and its application |
| CN108760439B (en) * | 2018-07-25 | 2021-08-10 | 中南大学 | Metallographic phase sample preparation method for CrMo steel |
| CN110132962B (en) * | 2019-04-24 | 2021-08-17 | 东方电气集团东方锅炉股份有限公司 | Display method of prior austenite grain boundary of tempered bainite steel for boiler and pressure vessel |
| CN117845217A (en) * | 2024-03-07 | 2024-04-09 | 内蒙古矽能电磁科技有限公司 | Corrosion liquid and corrosion method for displaying prior austenite grain boundary of oriented silicon steel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175726A (en) * | 2013-03-12 | 2013-06-26 | 上海大学 | Metallographic corrosion method for clearly displaying original austenite grain boundary of NiCrMoV type rotor steel |
| CN104729963A (en) * | 2015-03-31 | 2015-06-24 | 常州天山重工机械有限公司 | Detection and display method of austenite grains of quenched and tempered steel for gears at room temperature |
-
2016
- 2016-03-25 CN CN201610181219.5A patent/CN105865882B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175726A (en) * | 2013-03-12 | 2013-06-26 | 上海大学 | Metallographic corrosion method for clearly displaying original austenite grain boundary of NiCrMoV type rotor steel |
| CN104729963A (en) * | 2015-03-31 | 2015-06-24 | 常州天山重工机械有限公司 | Detection and display method of austenite grains of quenched and tempered steel for gears at room temperature |
Non-Patent Citations (2)
| Title |
|---|
| 《不同热处理工艺对35CrMo钢应力腐蚀敏感性影响的研究》;冯朋飞;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20120515(第5期);正文第25-33页 * |
| 《复相热处理对9Cr2Mo冷轧辊钢组织与力学性能的影响》;徐佐仁等;《机械工程材料》;19891231(第5期);第33-37页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105865882A (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105865882B (en) | Show the etching method of quality adjustment condition low-alloy chrome-molybdenum steel austenite grain grain boundary corrosion agent | |
| CN105092437B (en) | Ultra supercritical martensite heat resisting cast steel original austenite grains degree display methods | |
| CN104878389B (en) | A kind of pure nickel metallographic etchant and its caustic solution | |
| CN101760742B (en) | Preparation and application method of etchant displayed in Austenitic steel deformation layer and matrix structure | |
| CN101368889B (en) | Method for displaying high-strength vessel slab original austenite crystal grain | |
| CN101995349B (en) | Corrosion agent of high-steel-level pipeline steel metallographic structure and display method | |
| CN102011119B (en) | Dual-phase steel color metallographic coloring agent and color display method thereof | |
| CN101701886A (en) | Metallographical corrosive, method for eroding copper and method for displaying metallographical organization of copper | |
| CN101880881B (en) | High aluminum zinc alloy etching agent and use method thereof | |
| CN103792128B (en) | A kind of method of the biphase crystal boundary showing two phase stainless steel | |
| CN105738184B (en) | The application method for the etchant that manganese steel austenite grain boundary is shown | |
| CN103175726A (en) | Metallographic corrosion method for clearly displaying original austenite grain boundary of NiCrMoV type rotor steel | |
| CN106637212A (en) | Metallographic corrosive and alloy macrostructure display method | |
| CN104513985A (en) | Nickel-chromium alloy metallographic corrosion solution and corrosion method | |
| CN109187152A (en) | It is a kind of for showing the corrosive agent and display methods of heat resisting steel original austenite crystal boundary | |
| CN103993319A (en) | Corrosive agent and display method for macrostructure of aluminum and aluminum copper alloys | |
| CN104236993A (en) | Method for simultaneously displaying bearing steel austenite grain boundary and transgranular martensite | |
| CN109855933A (en) | A kind of metallographic specimen preparation method | |
| CN113063707B (en) | Corrosion method for prior austenite grain size of tempered troostite and martensite structure | |
| CN102507294A (en) | Displaying method for austenite grain boundary of intermediate-carbon alloy rare earth steel | |
| CN103924246A (en) | Metallographical corrosive liquid and preparation method thereof and 2205 duplex stainless steel metallographical display method | |
| CN105177577A (en) | Corrosion method for small-specification red copper rod | |
| CN111811912A (en) | Metallographic corrosion method for high-carbon martensitic stainless steel grain boundary | |
| CN103411814A (en) | Method for fast displaying original austenite grains of maraging steel containing Cr | |
| CN106596234A (en) | Method for displaying original austenite grain boundary of low-carbon microalloyed steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190621 Address after: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee after: Tianjin Steel Tube Manufacturing Co., Ltd. Address before: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee before: Tianjin Steel Pipe Group Co., Ltd. |
|
| TR01 | Transfer of patent right |