CN111060670B - Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid washing - Google Patents
Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid washing Download PDFInfo
- Publication number
- CN111060670B CN111060670B CN201911309671.5A CN201911309671A CN111060670B CN 111060670 B CN111060670 B CN 111060670B CN 201911309671 A CN201911309671 A CN 201911309671A CN 111060670 B CN111060670 B CN 111060670B
- Authority
- CN
- China
- Prior art keywords
- nickel
- based alloy
- pierced billet
- alloy pierced
- pickling solution
- 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
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/204—Structure thereof, e.g. crystal structure
- G01N33/2045—Defects
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/10—Other heavy metals
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a method for detecting crack defects on the inner surface of a nickel-based alloy pierced billet by acid washing, which comprises the following steps: adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 2-4%, and the volume percentage of the nitric acid is 4-8%; heating the pickling solution to 40-60 ℃; putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 5-8 minutes; after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface by water; and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface, and finding out crackling defects for positioning. According to the invention, the corrosion mixed liquid flowing out after the acid liquid is immersed into the crack defect and rusted for a certain time is used for detecting the crack defect, so that the problem that the crack defect on the inner surface of the nickel-based alloy pierced billet is difficult to detect is solved, and quality guarantee is provided for the qualification rate and the yield of the product and the later equipment manufacturing and use.
Description
Technical Field
The invention relates to the technical field of pipe manufacturing, in particular to a method for detecting crack defects on the inner surface of a nickel-based alloy pierced billet by acid washing.
Background
The pipe is used as an industrial blood vessel, is widely applied in industry, particularly the nickel-based alloy pipe is high in price and is a strategic raw material of China, so that the pipe has a special position in the pipe.
The inner surface crack defects of the pipe, particularly the crackle defects, are difficult to detect, and the defects only expand and cannot be eliminated in the subsequent forming process, so that the final product cannot meet the standard or use requirements. As the length of the pierced billet is basically short, the method for detecting the crackle defects on the inner surface of the pierced billet has been the following steps:
1) irradiating the two ends of the pierced billet with flashlight light, and carrying out visual inspection;
2) and (3) inspecting the inner surface of the pipe by using an endoscope. Both methods can cause the condition that crackle defects can not be detected, especially fine cracks; meanwhile, the endoscope cable is an expensive and easily-worn material, is not beneficial to frequent use in mass production, and has low working efficiency.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the method for testing the crack defects on the inner surface of the nickel-based alloy pierced billet by acid washing, which has the advantages of obvious testing effect, simple process steps and easiness in operation.
According to the technical scheme provided by the invention, the method for detecting the crack defects on the inner surface of the nickel-based alloy pierced billet by acid cleaning comprises the following steps:
a. Adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 2-4%, and the volume percentage of the nitric acid is 4-8%;
b. heating the pickling solution to 40-60 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 5-8 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
Preferably, the volume percentage of nitric acid in the pickling solution is 2 times the volume percentage of hydrofluoric acid.
Preferably, the method for detecting the crack defects on the inner surface of the nickel-based alloy pierced billet by acid cleaning specifically comprises the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 4 percent, and the volume percentage of the nitric acid is 8 percent;
b. heating the pickling solution to 60 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 8 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. And (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
Preferably, the method for detecting the crack defects on the inner surface of the nickel-based alloy pierced billet by acid cleaning specifically comprises the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 3 percent, and the volume percentage of the nitric acid is 6 percent;
b. heating the pickling solution to 50 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 7 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
Preferably, the method for detecting the crack defects on the inner surface of the nickel-based alloy pierced billet by acid cleaning specifically comprises the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 2 percent, and the volume percentage of the nitric acid is 4 percent;
b. heating the pickling solution to 40 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 5 minutes;
d. After the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
Preferably, the method for detecting the crack defects on the inner surface of the nickel-based alloy pierced billet by acid cleaning specifically comprises the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 3 percent, and the volume percentage of the nitric acid is 6 percent;
b. heating the pickling solution to 50 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 6 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
According to the invention, the corrosion mixed liquid flowing out after the acid liquid is immersed into the crack defect and rusted for a certain time is used for detecting the crack defect, so that the problem that the crack defect on the inner surface of the nickel-based alloy pierced billet is difficult to detect is solved, and quality guarantee is provided for the qualification rate and the yield of the product and the later equipment manufacturing and use.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
The method for detecting the crack defects on the inner surface of the N04400 nickel-based alloy pierced billet by acid washing specifically comprises the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 4 percent, and the volume percentage of the nitric acid is 8 percent;
b. heating the pickling solution to 60 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 8 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
Example 2
The method for detecting the crack defects on the inner surface of the N04400 nickel-based alloy pierced billet by acid washing specifically comprises the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 3 percent, and the volume percentage of the nitric acid is 6 percent;
b. heating the pickling solution to 50 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 7 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. And (3) placing the nickel-based alloy pierced billet on the rack for 24 hours, then testing the inner surface of the nickel-based alloy pierced billet, and finding out crackle defects for positioning.
Example 3
The method for detecting the crack defects on the inner surface of the N04400 nickel-based alloy pierced billet by acid washing specifically comprises the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 2 percent, and the volume percentage of the nitric acid is 4 percent;
b. heating the pickling solution to 40 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 5 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
Example 4
The method for detecting the crack defects on the inner surface of the N04400 nickel-based alloy pierced billet by acid washing specifically comprises the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 3 percent, and the volume percentage of the nitric acid is 6 percent;
b. heating the pickling solution to 50 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 6 minutes;
d. After the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
Through the embodiments 1 to 4, the crack defects on the inner surface of the N04400 nickel-based alloy pierced billet are clearly shown, and point grinding treatment is carried out after positioning, so that certain quality guarantee is provided for the qualification rate and the yield of products and later equipment manufacturing and use.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (6)
1. A method for detecting crack defects on the inner surface of a nickel-based alloy pierced billet by acid washing is characterized by comprising the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 2-4%, and the volume percentage of the nitric acid is 4-8%;
b. heating the pickling solution to 40-60 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 5-8 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. And (3) placing the nickel-based alloy pierced billet on the rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, inspecting the crack defects by generating rust mixed liquid flowing out after rusting, and finding out the crack defects to position.
2. The method for inspecting the crack defects on the inner surface of the nickel-based alloy pierced billet by pickling as claimed in claim 1, wherein the method comprises the following steps: in the acid washing solution, the volume percentage of the nitric acid is 2 times of that of the hydrofluoric acid.
3. The method for inspecting the crack defects on the inner surface of the nickel-based alloy pierced billet by acid washing as claimed in claim 1, which is characterized by comprising the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 4 percent, and the volume percentage of the nitric acid is 8 percent;
b. heating the pickling solution to 60 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 8 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
4. The method for inspecting the crack defects on the inner surface of the nickel-based alloy pierced billet by acid washing as claimed in claim 1, which is characterized by comprising the following steps:
a. Adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 3 percent, and the volume percentage of the nitric acid is 6 percent;
b. heating the pickling solution to 50 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 7 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
5. The method for inspecting the crack defects on the inner surface of the nickel-based alloy pierced billet by acid washing as claimed in claim 1, which is characterized by comprising the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 2 percent, and the volume percentage of the nitric acid is 4 percent;
b. heating the pickling solution to 40 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 5 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
6. The method for inspecting the crack defect on the inner surface of the nickel-based alloy pierced billet by the acid cleaning according to claim 1, which is characterized by comprising the following steps:
a. adding hydrofluoric acid and nitric acid into water to prepare a pickling solution, wherein in the pickling solution, the volume percentage of the hydrofluoric acid is 3 percent, and the volume percentage of the nitric acid is 6 percent;
b. heating the pickling solution to 50 ℃;
c. putting the nickel-based alloy pierced billet into the heated pickling solution to be soaked for 6 minutes;
d. after the nickel-based alloy pierced billet is lifted out, washing the inner surface and the outer surface of the nickel-based alloy pierced billet by water;
e. and (3) placing the nickel-based alloy pierced billet on a rack for 24 hours, then inspecting the inner surface of the nickel-based alloy pierced billet, and finding out crackling defects for positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309671.5A CN111060670B (en) | 2019-12-18 | 2019-12-18 | Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309671.5A CN111060670B (en) | 2019-12-18 | 2019-12-18 | Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid washing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111060670A CN111060670A (en) | 2020-04-24 |
| CN111060670B true CN111060670B (en) | 2022-06-10 |
Family
ID=70302274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911309671.5A Active CN111060670B (en) | 2019-12-18 | 2019-12-18 | Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid washing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111060670B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111996478B (en) * | 2020-08-21 | 2021-09-10 | 江苏隆达超合金股份有限公司 | Method for removing surface hairline of N06600 nickel-based alloy pierced billet |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01197657A (en) * | 1988-02-02 | 1989-08-09 | Sumitomo Metal Ind Ltd | Method for deciding intergranular stress corrosion cracking resistance of heat transmission pipe made of ni-base alloy |
| CN1906318A (en) * | 2004-01-08 | 2007-01-31 | 住友电工硬质合金株式会社 | Cubic boron nitride sintered compact |
| CN102965676A (en) * | 2012-11-16 | 2013-03-13 | 西安泵阀总厂有限公司 | Pickling process for zirconium and zirconium alloy casts |
| CN102967693A (en) * | 2012-11-12 | 2013-03-13 | 西安航空动力股份有限公司 | Penetrant detection and defect mending method in titanium alloy cast piece machining |
| CN103322336A (en) * | 2013-06-25 | 2013-09-25 | 浙江国邦钢业有限公司 | Nickel-copper alloy pipe producing technology and nickel-copper alloy seamless steel pipe |
| CN103331326A (en) * | 2013-06-25 | 2013-10-02 | 浙江国邦钢业有限公司 | Tube making process of high molybdenum alloy and seamless steel tube with high molybdenum alloy |
| CN103668205A (en) * | 2013-12-04 | 2014-03-26 | 湖南理工学院 | Etchant used for displaying the internal microstructure of Zr-Al-Ni-Cu amorphous alloy |
| CN104685103A (en) * | 2012-08-08 | 2015-06-03 | 高级航空技术有限责任公司 | Surface treatment process for components composed of aluminium having detection of impermissible overheating |
| CN104831179A (en) * | 2015-04-28 | 2015-08-12 | 苏州钢特威钢管有限公司 | High-temperature resistant seamless austenitic stainless steel pipe and preparation method thereof |
| CN104862593A (en) * | 2015-04-28 | 2015-08-26 | 苏州钢特威钢管有限公司 | Ferritic stainless steel seamless steel tube and preparation method thereof |
| CN105618508A (en) * | 2016-03-23 | 2016-06-01 | 攀钢集团成都钢钒有限公司 | Thin-walled TC4 titanium alloy seamless tube and production method thereof |
| CN106180194A (en) * | 2016-07-08 | 2016-12-07 | 江苏隆达超合金航材股份有限公司 | The technique that tubing is prepared in high temperature alloy bar perforation |
| WO2017061217A1 (en) * | 2015-10-05 | 2017-04-13 | 日新製鋼株式会社 | Stainless steel pipe with excellent corrosion resistance and manufacturing method thereof |
| CN107557616A (en) * | 2017-09-27 | 2018-01-09 | 宝钢特钢有限公司 | A kind of temperature gas cooled reactor steam generator abros tubing and its manufacture method |
| CN108127003A (en) * | 2017-12-06 | 2018-06-08 | 江苏银环精密钢管有限公司 | A kind of manufacturing method of drilling tool 23CrNi3Mo steel alloy seamless pipes |
| CN110389129A (en) * | 2019-08-01 | 2019-10-29 | 四川轻化工大学 | For showing the corrosive agent and its etching method of 690 nickel-base alloy deposited metal crystal boundaries |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958049A (en) * | 1971-11-04 | 1976-05-18 | Rodco, Inc. | Method of inspecting and treating sucker rod |
| JPS62254044A (en) * | 1986-04-25 | 1987-11-05 | Higashio Keishiyu Kk | Inspection for defect of cast product |
| FR2955937B1 (en) * | 2010-02-01 | 2013-02-08 | Messier Dowty Sa | METHOD FOR NON-DESTRUCTIVE DETECTION OF MACHINING BURNS OF HIGH-RESISTANCE STEEL, METHOD AND SCALE FOR CALIBRATION OF MACHINING BURNS THEREOF |
| KR102101109B1 (en) * | 2016-01-12 | 2020-04-14 | 제이에프이 스틸 가부시키가이샤 | Stainless steel sheet having Ni and O-containing coating on the surface and method for manufacturing the same |
| CN110320074B (en) * | 2019-06-27 | 2022-03-22 | 东方电气集团东方锅炉股份有限公司 | Method for treating metallographic specimen with crack defect after etching |
-
2019
- 2019-12-18 CN CN201911309671.5A patent/CN111060670B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01197657A (en) * | 1988-02-02 | 1989-08-09 | Sumitomo Metal Ind Ltd | Method for deciding intergranular stress corrosion cracking resistance of heat transmission pipe made of ni-base alloy |
| CN1906318A (en) * | 2004-01-08 | 2007-01-31 | 住友电工硬质合金株式会社 | Cubic boron nitride sintered compact |
| CN104685103A (en) * | 2012-08-08 | 2015-06-03 | 高级航空技术有限责任公司 | Surface treatment process for components composed of aluminium having detection of impermissible overheating |
| CN102967693A (en) * | 2012-11-12 | 2013-03-13 | 西安航空动力股份有限公司 | Penetrant detection and defect mending method in titanium alloy cast piece machining |
| CN102965676A (en) * | 2012-11-16 | 2013-03-13 | 西安泵阀总厂有限公司 | Pickling process for zirconium and zirconium alloy casts |
| CN103322336A (en) * | 2013-06-25 | 2013-09-25 | 浙江国邦钢业有限公司 | Nickel-copper alloy pipe producing technology and nickel-copper alloy seamless steel pipe |
| CN103331326A (en) * | 2013-06-25 | 2013-10-02 | 浙江国邦钢业有限公司 | Tube making process of high molybdenum alloy and seamless steel tube with high molybdenum alloy |
| CN103668205A (en) * | 2013-12-04 | 2014-03-26 | 湖南理工学院 | Etchant used for displaying the internal microstructure of Zr-Al-Ni-Cu amorphous alloy |
| CN104831179A (en) * | 2015-04-28 | 2015-08-12 | 苏州钢特威钢管有限公司 | High-temperature resistant seamless austenitic stainless steel pipe and preparation method thereof |
| CN104862593A (en) * | 2015-04-28 | 2015-08-26 | 苏州钢特威钢管有限公司 | Ferritic stainless steel seamless steel tube and preparation method thereof |
| WO2017061217A1 (en) * | 2015-10-05 | 2017-04-13 | 日新製鋼株式会社 | Stainless steel pipe with excellent corrosion resistance and manufacturing method thereof |
| CN105618508A (en) * | 2016-03-23 | 2016-06-01 | 攀钢集团成都钢钒有限公司 | Thin-walled TC4 titanium alloy seamless tube and production method thereof |
| CN106180194A (en) * | 2016-07-08 | 2016-12-07 | 江苏隆达超合金航材股份有限公司 | The technique that tubing is prepared in high temperature alloy bar perforation |
| CN107557616A (en) * | 2017-09-27 | 2018-01-09 | 宝钢特钢有限公司 | A kind of temperature gas cooled reactor steam generator abros tubing and its manufacture method |
| CN108127003A (en) * | 2017-12-06 | 2018-06-08 | 江苏银环精密钢管有限公司 | A kind of manufacturing method of drilling tool 23CrNi3Mo steel alloy seamless pipes |
| CN110389129A (en) * | 2019-08-01 | 2019-10-29 | 四川轻化工大学 | For showing the corrosive agent and its etching method of 690 nickel-base alloy deposited metal crystal boundaries |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111060670A (en) | 2020-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111060670B (en) | Method for detecting crack defects on inner surface of nickel-based alloy pierced billet by acid washing | |
| CN103627927A (en) | Titanium alloy extruded pipe or rolled pipe and preparation method thereof | |
| CN105018949A (en) | Rust remover suitable for steel precision part and rust removing process of rust remover | |
| CN109055710A (en) | The surface treatment method of hot rolling titanium volume | |
| CN110560506A (en) | production process for preventing surface decarburization of seamless steel tube for high-pressure boiler | |
| CN110132962B (en) | Display method of prior austenite grain boundary of tempered bainite steel for boiler and pressure vessel | |
| CN105033123B (en) | The processing method of 12~45mm of wire diameter hot rolling titanium spring | |
| CN106680059A (en) | Method for inspecting macrostructures and defects of beta titanium alloy | |
| CN103192244B (en) | Machining technology for titanium alloys and method for producing titanium rods and titanium wires through machining technology | |
| CN105951109A (en) | Rust remover | |
| CN109706464A (en) | A kind of neutrality rust remover and preparation method thereof | |
| CN110320088B (en) | Metallographic corrosion method for rapidly displaying special steel crystal boundary | |
| CN106269980B (en) | A kind of preparation process of seamless steel pipe | |
| CN104630739A (en) | Cleaning method of quartz tube in graphene growth furnace tube | |
| CN108453212B (en) | Chain production process | |
| CN105986279A (en) | Pickling process of steel wire | |
| CN111299888B (en) | Welding and machining manufacturing method for large lifting lug | |
| CN101691628A (en) | Method for manufacturing seamless steel tubes | |
| CN113334256A (en) | Method for cleaning nickel-based high-temperature alloy before welding | |
| CN102747368A (en) | Etchant for maraging steel and examination method of maraging steel macrostructure | |
| CN103924054A (en) | Antirust method for 20A steel tube for aviation | |
| CN104476122A (en) | Preparation method for welded steel pipe for boiler | |
| CN110554162A (en) | Simple and rapid on-site hot-rolled steel defect detection method | |
| CN106623481A (en) | A steel pipe production process | |
| CN105458543A (en) | Repair-welding process for 35 CrMo casting |
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 | ||
| CB02 | Change of applicant information |
Address after: 214105 No.18 Xiangyun Road, anzhen street, Xishan District, Wuxi City, Jiangsu Province Applicant after: Jiangsu Longda Super Alloy Co.,Ltd. Address before: 214105 No.18 Xiangyun Road, anzhen street, Xishan District, Wuxi City, Jiangsu Province Applicant before: WUXI LONGDA METAL MATERIALS Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |