CN111171635A - Anchor chain contrast enhancer and preparation method thereof - Google Patents
Anchor chain contrast enhancer and preparation method thereof Download PDFInfo
- Publication number
- CN111171635A CN111171635A CN201911394806.2A CN201911394806A CN111171635A CN 111171635 A CN111171635 A CN 111171635A CN 201911394806 A CN201911394806 A CN 201911394806A CN 111171635 A CN111171635 A CN 111171635A
- Authority
- CN
- China
- Prior art keywords
- contrast enhancer
- weight
- anchor chain
- parts
- mixture
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/08—Cellulose derivatives
- C09D101/26—Cellulose ethers
- C09D101/28—Alkyl ethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D193/00—Coating compositions based on natural resins; Coating compositions based on derivatives thereof
- C09D193/04—Rosin
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses an anchor chain contrast enhancer and a preparation method thereof. The preparation method of the anchor chain contrast enhancer comprises the following steps: firstly, sequentially adding a volatile solvent, an auxiliary agent, powder and a film-forming agent into a reaction kettle at normal temperature, and hermetically stirring and mixing; secondly, adding the mixture obtained in the first step into a grinder for grinding; thirdly, filtering the mixture obtained in the second step by a screen to obtain a contrast enhancer stock solution; and fourthly, sampling the stock solution obtained in the third step, and performing drying speed detection, film layer integrity detection and water resistance detection, wherein the stock solution meeting the three tests is judged to be a qualified product. The invention has the following beneficial effects: the anchor chain contrast intensifier has the advantages of high drying speed, complete film layer, strong covering power and good water resistance.
Description
Technical Field
The invention relates to an anchor chain contrast enhancer and a preparation method thereof, which are used for enhancing the visual contrast of magnetic suspension and belong to the technical field of nondestructive testing magnetic powder detection.
Background
Magnetic particle inspection is one of five conventional nondestructive inspection methods (penetration inspection, magnetic particle inspection, ray inspection, ultrasonic inspection, eddy current inspection) for detecting surface and near-surface defects of ferromagnetic materials. Like other nondestructive testing methods, magnetic particle testing is also used for effectively testing various engineering materials, parts and products on the premise of not damaging the tested object, so as to evaluate the integrity, continuity and safety and reliability of the engineering materials, the parts and the products. Magnetic particle inspection is an important means for realizing quality control, and is an indispensable component in product manufacture, use and maintenance.
The basic principle of magnetic particle testing is the principle of the absorption of the leakage magnetic field. Applying the magnetic powder suspension to the surface of a ferromagnetic workpiece, magnetizing the workpiece to be detected, adsorbing the magnetic powder to the vicinity of various surface or near-surface micro defects under the action of a leakage magnetic field, forming amplified defect display after the magnetization is finished, and observing under a white light or a black light lamp to visually detect the formation and distribution of the defects. A contrast enhancer is an auxiliary material used in magnetic particle inspection for the purpose of enhancing the visual contrast of the magnetic particles on the surface of a workpiece. The workpiece detected by magnetic powder detection has various forms and complex surface conditions, and may involve factors such as painted surfaces, rusted surfaces, high-roughness surfaces and the like, and the visual contrast of the magnetic powder on the surface of the workpiece may be affected by the factors, so that erroneous judgment or missing judgment occurs during visual observation. Before the magnetic suspension is applied, a white film layer can be formed by applying the contrast enhancer on the surface of the workpiece, so that the visual contrast between the surface of the workpiece and the magnetic powder is enhanced, and visual observation is facilitated.
Magnetic particle inspection is widely used for inspection of industrial equipment, wherein the marine industry is a place where contrast enhancers are frequently used due to complex production environment. In recent years, the marine industry in China is vigorously developed, the consumption of related matched materials is increased day by day, and an anchor chain is an important part required by the marine industry. The anchor chain has large self weight and rough surface, and the detection site is often in a semi-open type, which causes great difficulty for field detection, thereby providing a series of requirements for the contrast intensifier for the anchor chain.
Anchor chain contrast enhancers differ from conventional contrast enhancers in the following points: 1. the film layer is waterproof, and the anchor chain contrast intensifier must consider the waterproof performance of the film layer because of the complex use environment, so as to ensure that the anchor chain contrast intensifier cannot be damped and softened in a high-humidity environment, and even resist fresh water and seawater scouring in a short time; 2. the drying is rapid, and the drying capacity in a high-humidity environment is an important characteristic for adapting to the industrial production of ships; 3. the surface roughness of the anchor chain is high, the condition is complex, and the contrast intensifier of the anchor chain needs to effectively cover the surface to form a complete contrast intensifying film.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to enhance the water resistance of the contrast enhancer, accelerate the drying speed and enhance the covering power.
In order to solve the technical problems, the invention provides an anchor chain contrast enhancer which is characterized by comprising 75-80 parts by weight of volatile solvent, 1-5 parts by weight of auxiliary agent, 0.5-2 parts by weight of film forming agent and 13-23.5 parts by weight of powder.
Preferably, the volatile solvent is a mixture of ethanol, acetone and isopentane; the ethanol is not less than 20 parts by weight, and the acetone and the isopentane can be arbitrarily adjusted according to requirements (mainly depending on the requirements on the drying speed and the humidity of the use environment).
Preferably, the auxiliary agent is nonylphenol polyoxyethylene ether.
Preferably, the film forming agent is a mixture of ethyl cellulose ether and rosin resin; the ethyl cellulose ether is not less than 0.2 weight part, and the rosin resin is not less than 0.2 weight part.
Preferably, the powder is a mixture of titanium dioxide and magnesium oxide; magnesium oxide is not less than 1 part by weight and not more than 5 parts by weight, and titanium dioxide is not less than 10 parts by weight.
All the raw materials are in chemical purity or above, and are not diluted before being added into the reaction kettle, and the raw materials are added in a concentration of 100%; can be viewed in terms of solute weight.
A method of preparing an anchor chain contrast enhancer, comprising the steps of:
firstly, sequentially adding a volatile solvent, an auxiliary agent, powder and a film-forming agent into a reaction kettle at normal temperature, and hermetically stirring and mixing;
secondly, adding the mixture obtained in the first step into a grinder for grinding;
thirdly, filtering the mixture obtained in the second step by a screen to obtain a contrast enhancer stock solution;
and fourthly, sampling the stock solution obtained in the third step, and performing drying speed detection, film layer integrity detection and water resistance detection, wherein the stock solution meeting the three tests is judged to be a qualified product.
Preferably, the screen in the third step is a 350-mesh screen.
Preferably, the detection criteria of the drying speed detection, the film layer integrity detection and the water resistance detection in the fourth step are as follows:
1. and (3) detecting the drying speed: under the environment that the temperature is 20 ℃ and the humidity is not higher than 50, the drying speed is not more than 1 minute;
2. and (3) detecting the integrity of the film layer: the film layer formed after drying is complete and continuous;
3. and (3) water resistance detection: the film layer should not be damaged by rinsing with fresh water at 20 deg.C and 0.5 MPa.
Preferably, in the first step, the stirring time of the mixture in the reaction kettle is not less than 2 hours; the pressure in the reaction kettle is normal pressure.
Preferably, in the second step, the mixture is naturally discharged while the grinder is in operation, and the grinding is repeated not less than 5 times by the grinder.
The invention has the following beneficial effects:
(1) the anchor chain contrast intensifier provided by the invention has high drying speed and is suitable for field detection in ship industry;
(2) the anchor chain contrast enhancer provided by the invention has complete film layer and strong covering power, and is suitable for the surfaces of large-scale workpieces such as anchor chains;
(3) the anchor chain contrast enhancer provided by the invention has good water resistance and is suitable for the field detection environment of ship industry.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below.
Example 1
The invention relates to an anchor chain contrast enhancer, which comprises the following main components:
the preparation method of the anchor chain contrast enhancer comprises the following steps:
(1) selecting raw materials which are chemically pure or more than chemically pure and meet the requirements, weighing the raw materials according to mass percentage for later use.
(2) At normal temperature, sequentially adding the volatile solvent, the auxiliary agent, the powder and the film forming agent into a reaction kettle, and stirring for 2 hours in a closed manner; the pressure in the reaction kettle is normal pressure.
(3) Passing the obtained mixture through a grinder, wherein the mixture naturally flows out when the grinder works, and the grinder repeatedly grinds for 5 times for standby.
(4) And (3) sieving the stirred mixed solution with a 350-mesh sieve to obtain a contrast enhancer stock solution for later use.
(5) Sampling the stock solution, and carrying out the following detection:
1. and (3) detecting the drying speed: under the environment that the temperature is 20 ℃ and the humidity is not higher than 50, the drying speed is not more than 1 minute;
2. and (3) detecting the integrity of the film layer: the film layer formed after drying is complete and continuous;
3. and (3) water resistance detection: the film layer is not damaged by flushing with fresh water at 20 ℃ and 0.5Mpa pressure;
the stock solution meeting the three tests is judged to be qualified and packaged in bulk or in an aerosol can.
When the anchor chain contrast intensifier is used, the anchor chain contrast intensifier is applied to the surface of a workpiece, a uniform white contrast intensifying film layer is obtained after drying, water-based or oil-based magnetic suspension is applied to the film layer, magnetic powder detection is carried out, after magnetic marks are obtained, observation is carried out under white light, and the formation and distribution of defects can be detected visually. After use, the contrast intensifier film can be cleaned by cleaning agent such as ethanol, acetone, pentane cleaning oil or alkane cleaning oil.
Example 2
The invention relates to an anchor chain contrast enhancer, which comprises the following main components:
the rest is the same as in example 1.
Example 3
The invention relates to an anchor chain contrast enhancer, which comprises the following main components:
the rest is the same as in example 1.
Claims (10)
1. The anchor chain contrast enhancer is characterized by comprising 75-80 parts by weight of volatile solvent, 1-5 parts by weight of auxiliary agent, 0.5-2 parts by weight of film forming agent and 13-23.5 parts by weight of powder.
2. A chain contrast enhancer as claimed in claim 1 wherein said volatile solvent is a mixture of ethanol, acetone, isopentane; ethanol is not less than 20 parts by weight.
3. An anchor chain contrast enhancer as claimed in claim 1, wherein said adjuvant is nonylphenol polyoxyethylene ether.
4. The anchor chain contrast enhancer of claim 1 wherein said film former is a mixture of ethyl cellulose ether and rosin resin; the ethyl cellulose ether is not less than 0.2 weight part, and the rosin resin is not less than 0.2 weight part.
5. The anchor chain contrast enhancer as claimed in claim 1, wherein said powder is a mixture of titanium dioxide and magnesium oxide; magnesium oxide is not less than 1 part by weight and not more than 5 parts by weight, and titanium dioxide is not less than 10 parts by weight.
6. A method of producing a chain contrast enhancer as claimed in any one of claims 1 to 5, comprising the steps of:
firstly, sequentially adding a volatile solvent, an auxiliary agent, powder and a film-forming agent into a reaction kettle at normal temperature, and hermetically stirring and mixing;
secondly, adding the mixture obtained in the first step into a grinder for grinding;
thirdly, filtering the mixture obtained in the second step by a screen to obtain a contrast enhancer stock solution;
and fourthly, sampling the stock solution obtained in the third step, and performing drying speed detection, film layer integrity detection and water resistance detection, wherein the stock solution meeting the three tests is judged to be a qualified product.
7. The method of claim 6, wherein the mesh of the third step is a 350 mesh.
8. The method of claim 6, wherein the drying speed test, the film integrity test and the water resistance test in the fourth step are performed according to the following criteria:
1. and (3) detecting the drying speed: under the environment that the temperature is 20 ℃ and the humidity is not higher than 50, the drying speed is not more than 1 minute;
2. and (3) detecting the integrity of the film layer: the film layer formed after drying is complete and continuous;
3. and (3) water resistance detection: the film layer should not be damaged by rinsing with fresh water at 20 deg.C and 0.5 MPa.
9. The method for producing a contrast enhancer for anchor chains according to claim 6, wherein in the first step, the mixture is stirred in the reaction vessel for a period of not less than 2 hours; the pressure in the reaction kettle is normal pressure.
10. A method of producing an anchor chain contrast enhancer as claimed in claim 6, wherein in said second step, the mixture is allowed to flow naturally during operation of the grinding machine, the grinding machine being repeated no less than 5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394806.2A CN111171635A (en) | 2019-12-30 | 2019-12-30 | Anchor chain contrast enhancer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394806.2A CN111171635A (en) | 2019-12-30 | 2019-12-30 | Anchor chain contrast enhancer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111171635A true CN111171635A (en) | 2020-05-19 |
Family
ID=70646409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911394806.2A Pending CN111171635A (en) | 2019-12-30 | 2019-12-30 | Anchor chain contrast enhancer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111171635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686952A (en) * | 2021-06-07 | 2021-11-23 | 吴江市宏达探伤器材有限公司 | Contrast enhancer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO84172B1 (en) * | 1982-04-06 | 1984-06-30 | Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Industria Electrotehnica | Process for coating magnetic powders |
| CN1482454A (en) * | 2003-07-29 | 2004-03-17 | 沪东中华造船(集团)有限公司 | Magnetic powder inspection contrast intensifier and method for preparing the same |
| CN1614408A (en) * | 2004-12-02 | 2005-05-11 | 内蒙古第一机械制造（集团）有限公司 | Water-based magnetic suspending liquid adjusting agent for wet magnetic powder defect detection |
| CN102721737A (en) * | 2012-06-28 | 2012-10-10 | 吴江市宏达探伤器材有限公司 | Fluorescent water-based magnetic suspension for magnetic powder inspection and preparation method for fluorescent water-based magnetic suspension |
| CN102746740A (en) * | 2012-07-23 | 2012-10-24 | 玉溪市星源油墨厂 | Ink binder used for alcohol-soluble ink tipping paper and preparation process thereof |
| CN103076389A (en) * | 2012-12-25 | 2013-05-01 | 河北省电力公司电力科学研究院 | Magnetic powder detection method for large cast valve |
| CN105885531A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Heat-resisting fast-drying printing ink |
| CN109212017A (en) * | 2018-10-11 | 2019-01-15 | 吴江市宏达探伤器材有限公司 | A kind of contrast enhancement agents and preparation method thereof |
-
2019
- 2019-12-30 CN CN201911394806.2A patent/CN111171635A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO84172B1 (en) * | 1982-04-06 | 1984-06-30 | Institutul De Cercetare Stiintifica Si Inginerie Tehnologica Pentru Industria Electrotehnica | Process for coating magnetic powders |
| CN1482454A (en) * | 2003-07-29 | 2004-03-17 | 沪东中华造船(集团)有限公司 | Magnetic powder inspection contrast intensifier and method for preparing the same |
| CN1614408A (en) * | 2004-12-02 | 2005-05-11 | 内蒙古第一机械制造（集团）有限公司 | Water-based magnetic suspending liquid adjusting agent for wet magnetic powder defect detection |
| CN102721737A (en) * | 2012-06-28 | 2012-10-10 | 吴江市宏达探伤器材有限公司 | Fluorescent water-based magnetic suspension for magnetic powder inspection and preparation method for fluorescent water-based magnetic suspension |
| CN102746740A (en) * | 2012-07-23 | 2012-10-24 | 玉溪市星源油墨厂 | Ink binder used for alcohol-soluble ink tipping paper and preparation process thereof |
| CN103076389A (en) * | 2012-12-25 | 2013-05-01 | 河北省电力公司电力科学研究院 | Magnetic powder detection method for large cast valve |
| CN105885531A (en) * | 2016-05-30 | 2016-08-24 | 蚌埠市维光塑胶制品有限公司 | Heat-resisting fast-drying printing ink |
| CN109212017A (en) * | 2018-10-11 | 2019-01-15 | 吴江市宏达探伤器材有限公司 | A kind of contrast enhancement agents and preparation method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 吴光华: "《动车客车职工技能知识读本》", 30 September 2012, 西南交通大学出版社 * |
| 王余良等: "《印刷包装辅助材料》", 31 July 1988, 湖南大学出版社 * |
| 金英主: "《磁粉渗透检测》", 30 November 2018, 浙江工商大学出版社 * |
| 骆光林等: "《印刷包装材料》", 31 March 2002, 中国轻工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113686952A (en) * | 2021-06-07 | 2021-11-23 | 吴江市宏达探伤器材有限公司 | Contrast enhancer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Reddy | Non-destructive testing, evaluation of stainless steel materials | |
| CN107583470A (en) | Super hydrophilic and underwater superoleophobic water-oil separationg film and preparation method thereof | |
| CN104562012A (en) | Iron-base high-temperature alloy sample metallographic etching solution and etching method | |
| CN110006918B (en) | Penetrant flaw detection agent for penetrant flaw detection process | |
| CN111171635A (en) | Anchor chain contrast enhancer and preparation method thereof | |
| CN103901046A (en) | Flaw detection method for inner holes of workpiece | |
| CN112697811A (en) | Surface inspection method for low-magnetic anchor chain | |
| CN110922865A (en) | Steel surface composite coating and preparation method thereof | |
| CN104236981A (en) | Polishing method for metallographic sample of aluminum alloy | |
| CN1481964A (en) | Weld anti-spatter compound | |
| CN111790641A (en) | Flaw detection and sorting method for surface defects of bar | |
| CN110926975B (en) | Detection method for three-dimensional additive repair quality | |
| JPH08201345A (en) | Water dispersing fluorescent magnetic powder for wet magnetic powder flaw detection test | |
| JP4521648B2 (en) | Manufacturing method of fluorescent powder for magnetic particle testing | |
| CN111175374A (en) | Nuclear contrast enhancer and preparation method thereof | |
| CN104089967A (en) | Quick measurement method for aluminum, calcium or silicon content of solid plane material product | |
| CN108193254A (en) | A kind of growth in situ method of titanium alloy surface protective film | |
| CN111257408B (en) | Effervescent tablet containing nano magnetic powder and application thereof | |
| CN105701797A (en) | Method for determining defect of plating omission of continuous strip-shaped porous metal material | |
| CN107462583A (en) | A kind of high temperature dye check agent and preparation method thereof | |
| CN103350279B (en) | Friction stir welding Weak link defect preparation method | |
| CN111175309B (en) | Pipeline water leakage detection agent and preparation method thereof | |
| CN113686952A (en) | Contrast enhancer | |
| CN103882459A (en) | Method for removing titanium chromium nitride hard reaction film | |
| CN113030115A (en) | Metal flaw detection agent and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200519 |
|
| RJ01 | Rejection of invention patent application after publication |