CN115684359A - Construction method of aluminum alloy brazing defect ultrasonic detection method - Google Patents
Construction method of aluminum alloy brazing defect ultrasonic detection method Download PDFInfo
- Publication number
- CN115684359A CN115684359A CN202211260623.3A CN202211260623A CN115684359A CN 115684359 A CN115684359 A CN 115684359A CN 202211260623 A CN202211260623 A CN 202211260623A CN 115684359 A CN115684359 A CN 115684359A
- Authority
- CN
- China
- Prior art keywords
- product
- tensile strength
- defect
- metallographic structure
- products
- 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
Images
Abstract
The invention discloses a construction method of an ultrasonic detection method for aluminum alloy brazing defects, and relates to the technical field of ultrasonic detection. C scanning is carried out on the product by using an ultrasonic detection method, indexes such as defect size, ultrasonic echo amplitude and the like on a C scanning image are observed, corresponding relations between tests of metallographic structure welding rate and tensile strength, nondestructive testing and destructive testing of the product are combined, and the value range of the defect size and the ultrasonic echo amplitude of the qualified product is determined according to the requirements of the qualified product on the metallographic structure welding rate and the tensile strength, so that whether the product is qualified or not can be determined only by observing the result of the C scanning image in the product detection process. The defect sizes and the value ranges of the ultrasonic echo amplitudes of the products of different grades can be determined according to the requirements of the products of different grades on the metallographic structure welding rate and the tensile strength, and the quality grade of the products can be determined only by observing the result of the C scanning image in the product detection process.
Description
Technical Field
The invention relates to the technical field of ultrasonic detection, in particular to a construction method of an ultrasonic detection method for aluminum alloy brazing defects.
Background
With the precision and complicated development of industrial products, many products cannot be subjected to destructive detection after production is finished, and the quality of the products cannot be guaranteed. Therefore, the improvement of the nondestructive testing method and means plays a key role in ensuring the product quality. At present, ultrasonic detection is the most widely applied nondestructive detection technology with the highest use frequency at home and abroad, and is an important means for realizing quality control, saving raw materials, improving processes and improving labor productivity in product manufacturing.
The general ultrasonic detection method is to make defects with different diameters in a comparison test block, and judge whether a product is qualified or not and the qualified grade of the product according to the standard of the equivalent flat-bottom hole diameter indicated by a single discontinuity indicator, the intervals indicated by a plurality of discontinuities and the length indicated by a long strip discontinuity indicator. An individual discontinuity indication is undesirable when its magnitude exceeds the equivalent flat-bottom hole indication magnitude of the desired level. When multiple discontinuities indicate a pitch of less than 25mm, an equivalent flat-bottom hole indicating an amplitude in excess of the desired level indicates an amplitude that is undesirable. If the magnitude of the elongate discontinuity indication exceeds the desired level of equivalent flat-bottom hole indication magnitude and specified length, it is undesirable.
However, in the C-scan picture of the aluminum alloy brazing product, a single discontinuous indication is not clear, the intervals indicated by a plurality of discontinuous indications are fuzzy, long strip defects basically do not exist, and the discontinuous indications are mostly area-dense type discontinuous indications. Therefore, the C-scan results of brazing aluminum alloy products cannot be judged using existing inspection standards.
In view of this, the invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a construction method of an aluminum alloy brazing defect ultrasonic detection method, and aims to provide a method capable of accurately judging whether an aluminum alloy brazing product is qualified or not.
The invention is realized by the following steps:
the invention provides a construction method of an aluminum alloy brazing defect ultrasonic detection method, which comprises the following steps:
carrying out ultrasonic detection on an aluminum alloy brazing product to obtain a C scanning image, carrying out stage division according to the ultrasonic echo amplitude and the single defect size on the C scanning image, carrying out mechanical property test and metallographic structure analysis on product cutting samples in different stages, determining the corresponding relation between different ultrasonic echo amplitudes and the tensile strength and the metallographic structure welding rate of the product, and determining the corresponding relation between different defect sizes and the tensile strength and the metallographic structure welding rate of the product;
determining the value range of the ultrasonic echo amplitude under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the product, and taking the value range of the ultrasonic echo amplitude as a first product qualification criterion; determining the value range of the defect size under the condition of meeting the requirements of tensile strength and metallographic structure welding rate, and taking the value range of the defect size as a second product qualification criterion;
and when the defect index in the C scanning image simultaneously meets the first product qualification criterion and the second product qualification criterion, judging that the product quality is qualified.
In an alternative embodiment, the process of obtaining the first product eligibility criterion comprises: determining ultrasonic echo amplitudes corresponding to the defects with different gray values according to the C scanning image, and performing stage division by taking 8-12% as a stage according to the test value of the ultrasonic echo amplitudes; the method comprises the steps of carrying out mechanical property test and metallographic structure analysis on cut samples of products in ultrasonic echo amplitude areas at different stages, determining the corresponding relation between different ultrasonic echo amplitudes and the tensile strength and the metallographic structure welding rate of the products, determining the value range of the ultrasonic echo amplitudes under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the products, and taking the value range of the ultrasonic echo amplitudes as a first product qualification criterion.
In an alternative embodiment, the phase division is performed in a phase of 10% according to the test value of the ultrasonic echo amplitude.
In an alternative embodiment, the process of deriving the second product eligibility criterion comprises: selecting the size of a single defect according to the C scanning image, and performing stage division by taking 0.1-0.3mm as a stage according to the size of the defect; and performing mechanical property test and metallographic structure analysis on the product cut samples with the defect sizes at different stages, determining the corresponding relation between the different defect sizes and the tensile strength and metallographic structure welding rate of the product, determining the value range of the defect sizes under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the product, and taking the value range of the defect sizes as a second product qualification criterion.
In an alternative embodiment, the segmentation is performed in stages of 0.2mm according to the defect size.
In an optional embodiment, after the product is judged to be qualified, the quality grade of the product is determined according to the difference between the ultrasonic echo amplitude and the defect size.
In an optional implementation manner, the value range of the ultrasonic echo amplitude under the condition of meeting the tensile strength requirements of different grades of products is determined according to the tensile strength requirements of the different grades of products.
In an optional embodiment, according to the requirements of tensile strengths of different grades of products, the value range of the defect size under the condition of meeting the requirements of the tensile strengths of the different grades of products is determined, and the tensile strength and the defect size are simultaneously used as judgment indexes to judge the grade of the product.
In an alternative embodiment, the product is divided into a first grade and a second grade, the tensile strength of the brazing defect of the product of the first grade is greater than or equal to 90% of the strength of the base material, and the tensile strength of the brazing defect of the product of the second grade is greater than or equal to 75% of the strength of the base material.
The invention has the following beneficial effects: the product is subjected to C scanning by an ultrasonic detection method, indexes such as the size of a defect, the amplitude of ultrasonic echo and the like on a C scanning image are observed, the corresponding relation between the test of the metallographic structure welding rate and the tensile strength of the product, the nondestructive test and the destructive test is combined, the value range of the defect size and the ultrasonic echo amplitude of the qualified product is determined according to the requirements of the qualified product on the metallographic structure welding rate and the tensile strength, and whether the product is qualified or not can be determined only by observing the result of the C scanning image in the product detection process.
The method can determine the defect size and the value range of ultrasonic echo amplitude of products of different grades according to the requirements of the products of different grades on the metallographic structure welding rate and the tensile strength, and can determine the quality grade of the products only by observing the result of the C scanning image in the product detection process. Not only can reduce the cost of subsequent destructive experiments, but also can quickly judge the quality of products.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a method of construction of the ultrasonic inspection method for defects in brazing aluminum alloys according to the present invention;
FIG. 2 is a typical aluminum alloy brazing C-scan pattern.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The embodiment of the invention provides a method for constructing an ultrasonic detection method for aluminum alloy brazing defects, which combines nondestructive detection and destructive test detection in a combined mode, and determines the value range of nondestructive detection indexes according to the requirements of destructive detection indexes so as to achieve the purpose of determining whether products are qualified and the quality grade of the products by only observing results of C scanning images. Referring to fig. 1, the method includes the following steps:
s1, establishing a first product qualification criterion
The method comprises the steps of completing ultrasonic detection on an aluminum alloy brazing product to obtain a C scanning image, performing stage division according to ultrasonic echo amplitude (ultrasonic echo intensity) on the C scanning image, performing mechanical property test and metallographic structure analysis on samples cut from the product in different stages, determining the corresponding relation between different ultrasonic echo amplitudes and the tensile strength and metallographic structure welding rate of the product, determining the value range of the ultrasonic echo amplitude under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the product, and taking the value range of the ultrasonic echo amplitude as a first product qualification criterion.
In the actual operation process, the process of obtaining the first product qualification criterion comprises the following steps: determining ultrasonic echo amplitudes corresponding to the defects with different gray values according to the C scanning image, and performing stage division by taking 8-12% as a stage according to the test value of the ultrasonic echo amplitudes; the method comprises the steps of carrying out mechanical property test and metallographic structure analysis on cut samples of products in ultrasonic echo amplitude areas at different stages, determining corresponding relations between different ultrasonic echo amplitudes and tensile strength and metallographic structure welding rate of the products, determining a value range of the ultrasonic echo amplitudes under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the products, and taking the value range of the ultrasonic echo amplitudes as a first product qualification criterion.
Specifically, the length of one stage when the stage division is performed may be, for example, 8%, 9%, 10%, 11%, 12%, and the like, and the stage division is preferably performed in 10% as one stage for convenience of calculation. If the length of the first stage is too large, the accuracy of the obtained first product qualification criterion is not high, and if the length of the first stage is too small, the same conclusion as the second product qualification criterion is not easily obtained, so that misjudgment is easily caused.
Note that C-scans of multiple aluminum alloy brazing products were tested, including pass, fail, and products at different grades. The gray value defect and the ultrasonic echo amplitude can be seen in the C scanning image, different gray value defects correspond to the ultrasonic echo amplitude, the stage division is carried out according to the ultrasonic echo amplitude, for example, the division is carried out by 0-10%, 10-20%, 20-30%, 30-40% and the like, and the number of the division stages is not limited. The method comprises the following steps of carrying out mechanical property test and metallographic structure analysis on cut samples of products in ultrasonic echo intensity areas at different stages, wherein the mechanical property test is used for testing the tensile strength, and the metallographic structure analysis is used for testing the metallographic structure welding rate, so that corresponding relations can be established according to different ultrasonic echo intensities, the product tensile strength and the metallographic structure welding rate.
It should be noted that different aluminum alloy products have requirements on tensile strength and metallurgical structure welding rate, for example, the tensile strength of the brazing defect of the product is generally required to be greater than 80% of the strength of the base metal, and the metallurgical structure welding rate is required to reach 85% for example. After the destructive test and the nondestructive test are in correspondence, the numerical value of the ultrasonic echo amplitude meeting the requirement can be determined according to the requirements of the destructive test on the tensile strength and the metallographic structure welding rate, and whether the product is qualified can be determined by directly testing the numerical value of the ultrasonic echo amplitude in the actual test.
In some embodiments, the product is classified into a first grade and a second grade, the tensile strength of the brazing defect of the product of the first grade is greater than or equal to 90% of the strength of the parent material, and the tensile strength of the brazing defect of the product of the second grade is greater than or equal to 75% of the strength of the parent material. According to the requirements of the tensile strength of products of different grades, the value range of the ultrasonic echo amplitude under the condition of meeting the requirements of the tensile strength of the products of different grades is determined, and then the ultrasonic echo amplitude is directly tested during actual testing to determine the grade of the product.
S2, establishing a second product qualification criterion
Carrying out ultrasonic detection on the aluminum alloy brazing product to obtain a C scanning image, carrying out stage division according to the ultrasonic echo amplitude and the single defect size on the C scanning image, carrying out mechanical property test and metallographic structure analysis on cut samples of the product in different stages, and determining the corresponding relation between different defect sizes and the tensile strength and the metallographic structure welding rate of the product; and determining the value range of the defect size under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the product, and taking the value range of the defect size as a second product qualification criterion.
In the actual operation process, the process of obtaining the second product qualification criterion comprises the following steps: selecting the size of a single defect according to the C scanning image, and performing stage division by taking 0.1-0.3mm as a stage according to the size of the defect; and performing mechanical property test and metallographic structure analysis on the cut samples of the products with the defect sizes at different stages, determining the corresponding relation between different defect sizes and the tensile strength and metallographic structure welding rate of the products, determining the value range of the defect sizes under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the products, and taking the value range of the defect sizes as a second product qualification criterion.
Specifically, the length of one stage of the defect size may be 0.1mm, 0.2mm, 0.3mm, or the like, preferably 0.2mm. For example, the following stages can be defined according to the defect size: 0-0.2mm, 0.2-0.4 mm, 0.4-0.6 mm, 0.6-0.8 mm, etc. The number of the specific division stages is not limited, and the defect sizes of different products can be embodied as comprehensively as possible according to actual conditions. The method comprises the following steps of carrying out mechanical property test and metallographic structure analysis on cut samples of products with different stage defect sizes, wherein the mechanical property test is used for testing the tensile strength, and the metallographic structure analysis is used for testing the metallographic structure welding rate, so that corresponding relations can be established according to different defect sizes, the product tensile strength and the metallographic structure welding rate.
In some embodiments, the size of the individual defects may be selected according to existing standards (0.4 mm, 0.8mm, 1.2 mm).
Similarly to S1, the product is classified into a first grade and a second grade, the tensile strength of the brazing defect of the product of the first grade is 90% or more of the strength of the base material, and the tensile strength of the brazing defect of the product of the second grade is 75% or more of the strength of the base material. According to the requirements of tensile strength of products of different grades, the value range of the defect size under the condition of meeting the requirements of the tensile strength of the products of different grades is determined, the product grade is judged by taking the tensile strength and the defect size as judgment indexes, and then the product grade can be determined by directly testing the defect size in the actual test.
S3, product judgment
And when the defect index in the C scanning image simultaneously meets the first product qualification criterion and the second product qualification criterion, judging that the product quality is qualified. In actual operation, whether the product is qualified or not can be determined by testing the amplitude of the acoustic echo and the size of the defect, when the amplitude of the ultrasonic echo and the size of the defect both meet the qualified requirements, the product is judged to be qualified, and when only one of the amplitude of the ultrasonic echo and the size of the defect is met, the product is judged to be unqualified.
In some embodiments, after the product is judged to be qualified, the quality grade of the product is determined according to the difference of the ultrasonic echo amplitude and the defect size. Specifically, the grade of the product is determined according to the ultrasonic echo amplitude and the defect size corresponding to the products of different grades, for example, the product belongs to a first grade or a second grade.
It should be noted that, when the results of judging the grade according to the ultrasonic echo amplitude and the defect size are inconsistent, if the product belongs to the first grade according to the judgment of the ultrasonic echo amplitude and the second grade according to the judgment of the defect size, the product can be judged to belong to the second grade, and the product is judged to belong to the first grade only when both the ultrasonic echo amplitude and the defect size belong to the first grade.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment provides a construction method of an aluminum alloy brazing defect ultrasonic detection method, which comprises the following steps:
(1) Description of the materials
The specific model of the aluminum alloy is 6061 aluminum alloy, the tensile strength of the brazing defect is more than 75% of that of the base metal when the product is qualified, and the metallographic structure welding rate is more than 75%. The tensile strength of the brazing defect of the first-grade product is more than 90% of that of the parent metal, and the tensile strength of the brazing defect of the second-grade product is 75% -90% of that of the parent metal.
(2) Establishing a first product qualification criterion
C scanning is carried out on the product by using an ultrasonic detection method, ultrasonic echo amplitudes corresponding to defects with different gray values are determined according to a C scanning diagram (shown in figure 2), and 10% is taken as a one-stage to carry out stage division according to a test value of the ultrasonic echo amplitudes, wherein the six stages are specifically divided into 0-10%, 10-20%, 20-30%, 30-40%, 40-50% and 50-60%.
The method comprises the steps of carrying out mechanical property test (the statistical result is shown in table 1) and welding rate analysis (the statistical result is shown in table 2) on cut samples of products in ultrasonic echo amplitude areas at different stages, determining the corresponding relation between different ultrasonic echo amplitudes and the tensile strength and the welding rate of metallographic structures of the products, determining the value range of the ultrasonic echo amplitudes under the condition of meeting the requirements of the tensile strength and the welding rate of metallographic structures according to the requirements of the tensile strength and the welding rate of metallographic structures of the products, and taking the value range of the ultrasonic echo amplitudes as a first product qualification criterion. The ultrasonic echo amplitude value range of the qualified product is 40%, the ultrasonic echo amplitude value range of the first-grade product is 30%, and the ultrasonic echo amplitude value range of the second-grade product is 40%.
TABLE 1 statistical results of mechanical properties corresponding to different echo intensities
| Serial number | Echo intensity/%) | Mean tensile strength/MPa | Ratio of strength/%) |
| 1 | 0-10 | 118 | 98 |
| 2 | 10-20 | 109 | 91 |
| 3 | 20-30 | 97 | 81 |
| 4 | 30-40 | 90 | 75 |
| 5 | 40-50 | 72 | 60 |
| 6 | 50-60 | 61 | 51 |
TABLE 2 statistical results of different echo intensities and weld rates
| Serial number | Echo intensity/%) | Percentage of welding/%) |
| 1 | 0-10 | 100 |
| 2 | 10-20 | 93 |
| 3 | 20-30 | 85 |
| 4 | 30-40 | 77 |
| 5 | 40-50 | 64 |
| 6 | 50-60 | 55 |
(3) Establishing a second product qualification criterion
Selecting the size of a single defect according to a C scanning chart, and carrying out stage division by taking 0.2mm as a stage according to the size of the defect, wherein the stage division is specifically divided into several stages of 0-0.2mm, 0.2mm-0.4mm, 0.4mm-0.6mm, 0.6mm-0.8mm, 0.8-1.0mm, 1.0-1.2mm and 1.2-1.4 mm.
And (3) carrying out mechanical property test and metallographic structure analysis on cut samples of products with different stage defect sizes, determining the corresponding relation (shown in table 3) between different defect sizes and the tensile strength and metallographic structure welding rate of the products, determining the value range of the defect size under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the products, and taking the value range of the defect size as a second product qualification criterion. The range of the defect size of the qualified product is 1.0mm, the range of the defect size of the first-grade product is 0.4mm, and the range of the defect size of the second-grade product is 0.8mm.
TABLE 3 statistical results of mechanical properties and weld-in rates corresponding to different defect sizes
(4) Product determination
And taking the aluminum alloy brazing product to be tested, testing the C scanning image of the aluminum alloy brazing product, judging that the product quality is qualified and judging the grade of the product when the defect index in the C scanning image simultaneously meets the first product qualification criterion and the second product qualification criterion.
Product 1: the range of the ultrasonic echo amplitude is 20-30%, the defect size is 0.2-0.4, and the product is qualified.
Product 2: the test ultrasonic echo amplitude is 30-40%, the defect size is 0.5-0.8, and the product is qualified.
Product 3: the test ultrasonic echo amplitude is 50-60%, the defect size is 0.9-1.2, and the product is unqualified.
And (3) adopting the first product qualification criterion and the second product qualification criterion obtained in the embodiment 1 to determine whether the aluminum alloy brazing product is qualified, wherein the number of the tested products is 1000, and the number of the tested products is 934, and the tested products are judged to be qualified products, and the products judged to be qualified products pass quality detection, and have no feedback problem.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A construction method of an ultrasonic detection method for aluminum alloy brazing defects is characterized by comprising the following steps:
carrying out ultrasonic detection on an aluminum alloy brazing product to obtain a C scanning image, carrying out stage division according to the ultrasonic echo amplitude and the single defect size on the C scanning image, carrying out mechanical property test and metallographic structure analysis on cut samples of the product in different stages, determining the corresponding relation between different ultrasonic echo amplitudes and the tensile strength and the metallographic structure welding rate of the product, and determining the corresponding relation between different defect sizes and the tensile strength and the metallographic structure welding rate of the product;
determining the value range of the ultrasonic echo amplitude under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the product, and taking the value range of the ultrasonic echo amplitude as a first product qualification criterion; determining the value range of the defect size under the condition of meeting the requirements of tensile strength and metallographic structure welding rate, and taking the value range of the defect size as a second product qualification criterion;
and when the defect index in the C scanning image simultaneously meets the first product qualification criterion and the second product qualification criterion, judging that the product quality is qualified.
2. The method for constructing an ultrasonic detection method for aluminum alloy brazing defects according to claim 1, wherein the process of obtaining the first product qualification criterion comprises: determining ultrasonic echo amplitudes corresponding to the defects with different gray values according to the C scanning image, and performing stage division by taking 8-12% as a stage according to the test value of the ultrasonic echo amplitudes; the method comprises the steps of carrying out mechanical property test and metallographic structure analysis on cut samples of products in ultrasonic echo amplitude areas at different stages, determining corresponding relations between different ultrasonic echo amplitudes and tensile strength and metallographic structure welding rate of the products, determining a value range of the ultrasonic echo amplitudes under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the products, and taking the value range of the ultrasonic echo amplitudes as a first product qualification criterion.
3. The method for constructing an ultrasonic detection method for aluminum alloy brazing defects according to claim 2, wherein the step division is performed in a stage of 10% according to the test value of the ultrasonic echo amplitude.
4. The method for constructing an ultrasonic detection method for aluminum alloy brazing defects according to claim 1, wherein the process of obtaining the second product qualification criterion includes: selecting the size of a single defect according to the C scanning image, and performing stage division by taking 0.1-0.3mm as a stage according to the size of the defect; and performing mechanical property test and metallographic structure analysis on the product cut samples with the defect sizes at different stages, determining the corresponding relation between the different defect sizes and the tensile strength and metallographic structure welding rate of the product, determining the value range of the defect sizes under the condition of meeting the requirements of the tensile strength and the metallographic structure welding rate according to the requirements of the tensile strength and the metallographic structure welding rate of the product, and taking the value range of the defect sizes as a second product qualification criterion.
5. The method for constructing an ultrasonic detection method for aluminum alloy brazing defects according to claim 4, wherein the classification is performed in stages of 0.2mm according to the size of the defects.
6. The method for constructing the ultrasonic detection method for the aluminum alloy brazing defects according to claim 1, wherein after the products are judged to be qualified, the quality grade of the products is determined according to the difference between the ultrasonic echo amplitude and the defect size.
7. The method for constructing the ultrasonic detection method for the aluminum alloy brazing defects according to claim 6, wherein the value range of the ultrasonic echo amplitude under the condition of meeting the tensile strength requirements of different grades of products is determined according to the tensile strength requirements of the different grades of products.
8. The method for constructing the ultrasonic detection method for the aluminum alloy brazing defects according to claim 7, characterized by determining the value range of the defect sizes under the condition of meeting the tensile strength requirements of different grades of products according to the tensile strength requirements of the different grades of products, and judging the grade of the products by taking the tensile strength and the defect sizes as judgment indexes at the same time.
9. The method for constructing the ultrasonic detection method of the aluminum alloy brazing defect according to claim 7 or 8, wherein the product is divided into a first grade and a second grade, the tensile strength of the brazing defect of the product of the first grade is greater than or equal to 90% of the strength of the base material, and the tensile strength of the brazing defect of the product of the second grade is greater than or equal to 75% of the strength of the base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260623.3A CN115684359A (en) | 2022-10-14 | 2022-10-14 | Construction method of aluminum alloy brazing defect ultrasonic detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211260623.3A CN115684359A (en) | 2022-10-14 | 2022-10-14 | Construction method of aluminum alloy brazing defect ultrasonic detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115684359A true CN115684359A (en) | 2023-02-03 |
Family
ID=85067258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211260623.3A Pending CN115684359A (en) | 2022-10-14 | 2022-10-14 | Construction method of aluminum alloy brazing defect ultrasonic detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115684359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116482229A (en) * | 2023-06-26 | 2023-07-25 | 河北宇天材料科技有限公司 | Nondestructive testing judging method for welding quality of diffusion welding |
-
2022
- 2022-10-14 CN CN202211260623.3A patent/CN115684359A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116482229A (en) * | 2023-06-26 | 2023-07-25 | 河北宇天材料科技有限公司 | Nondestructive testing judging method for welding quality of diffusion welding |
| CN116482229B (en) * | 2023-06-26 | 2023-09-08 | 河北宇天材料科技有限公司 | Nondestructive testing judging method for welding quality of diffusion welding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102636566B (en) | Ultrasonic flaw detection method for radial defect in barrel type forge piece | |
| CN115684359A (en) | Construction method of aluminum alloy brazing defect ultrasonic detection method | |
| US20220003719A1 (en) | Ultrasonic detection and tensile calibration test method for bonding strength grade | |
| CN110763758B (en) | Method for determining relation between defects and fatigue performance based on nondestructive testing | |
| US20230158572A1 (en) | A non-destructive testing method for lof defects, and a testing standard part and a manufacturing method thereof | |
| CN112666263A (en) | Method for measuring welding ultrasonic detection sensitivity of lightweight wing rudder | |
| CN112577981A (en) | Method for rapidly identifying source of large foreign impurities in steel | |
| CN111024533B (en) | Method for detecting steel material cut by knife | |
| CN102636567A (en) | Oblique-incidence ultrasonic flaw detection method for barrel-type forging | |
| US6318178B1 (en) | Cleanliness evaluation method for metallic materials based on ultrasonic flaw detection and metallic material affixed with evaluation of cleanliness | |
| CN116579657A (en) | Method for evaluating quality of metal lattice sandwich structure product in additive manufacturing | |
| CN116482229B (en) | Nondestructive testing judging method for welding quality of diffusion welding | |
| Lamborn et al. | Pipeline Steel Fracture Toughness and the Need for a Toughness Database of API 5L Line Pipe | |
| TWI720816B (en) | Fast screening method to identify the hole expansion performance of ultra-high-strength cold-rolled steel by bending test | |
| Balanovsky et al. | Quality control of welding in titanium panels, made using method of diffusion welding and superplastic forming | |
| DeNale et al. | A comparison of ultrasonics and radiography for weld inspection | |
| CN109781854B (en) | Method for detecting inclusion defect in flat metal plate | |
| Thiery et al. | Higher Macro-Cleanliness of Bearing Steels Needs More Accurate Measuring-Methods³ | |
| JP2012181112A (en) | Cleanliness evaluation method of metallic material | |
| CN217007116U (en) | Flat butt weld contrast test block of clad steel sheet for bridge | |
| JP4588274B2 (en) | Plating peeling test method | |
| Maeda et al. | Quantifying influence of LME inner cracks on joint strength of resistance spot weld | |
| CN108828063B (en) | Eddy current detection method for microchannel parallel flow tube | |
| CN206920392U (en) | For detecting the test block of material sound reflection characteristics | |
| CN109781856A (en) | The method that double-crystal normal probe judges field trash group defect in flat metal plate |
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 |