Stainless steel welded joint intergranular corrosion test method

A welding joint and intergranular corrosion technology, which is applied in the fields of weather resistance/light resistance/corrosion resistance, instruments, design optimization/simulation, etc., can solve problems such as excessive manpower, shortened test cycle, and unfavorable test results, so as to reduce manpower consumption , shorten the test cycle, and ensure the effect of the test effect

Pending Publication Date: 2022-06-03
江苏容大材料腐蚀检验有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, this kind of test method is fully manual operation, the test period is long, and it needs manual attention during the test process, which requires a lot of manpower, and in the test process, it is necessary to often record the time, which is not conducive to the processing of test results, and cannot be obtained. Accurate test results, it is difficult to effectively shorten the test cycle

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  • Stainless steel welded joint intergranular corrosion test method

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Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 As shown, a method for testing intergranular corrosion of stainless steel welded joints includes the following steps:

[0025] S1. Obtaining samples: select three stainless steel welded joints to be tested for corrosion from the same production batch number, the same placement environment and the same specification of the sample area;

[0026] S2. Joint treatment: clean the three selected stainless steel welded joints, and use cleaning reagents to treat the stainless steel welded joints. The cleaning reagents used for cleaning the joints are acidic reagents, and hydrochloric acid is the best;

[0027] S3. Sensitization treatment: place the three stainless steel welded joints in the temperature range of 400°C to 850°C for slow heating to achieve the effect of sensitization treatment;

[0028] S4. Model construction: scan the wire beam for the joints in the sensitization process, and construct a three-dimensional digital model according to the parameters ob...

Embodiment 2

[0035] like figure 1 As shown, a method for testing intergranular corrosion of stainless steel welded joints includes the following steps:

[0036] S1. Obtaining samples: select three stainless steel welded joints to be tested for corrosion from the same production batch number, the same placement environment and the same specification of the sample area;

[0037] S2. Joint treatment: clean the three selected stainless steel welded joints, and use cleaning reagents to treat the stainless steel welded joints. The cleaning reagents used for cleaning the joints are acidic reagents, and hydrochloric acid is the best;

[0038] S3. Sensitization treatment: place the three stainless steel welded joints in the temperature range of 400°C to 850°C for slow heating to achieve the effect of sensitization treatment;

[0039] S4. Model construction: scan the wire beam for the joints in the sensitization process, and construct a three-dimensional digital model according to the parameters ob...

Embodiment 3

[0046] like figure 1 As shown, a method for testing intergranular corrosion of stainless steel welded joints includes the following steps:

[0047] S1. Obtaining samples: select three stainless steel welded joints to be tested for corrosion from the same production batch number, the same placement environment and the same specification of the sample area;

[0048] S2. Joint treatment: clean the three selected stainless steel welded joints, and use cleaning reagents to treat the stainless steel welded joints. The cleaning reagents used for cleaning the joints are acidic reagents, and hydrochloric acid is the best;

[0049] S3. Sensitization treatment: place the three stainless steel welded joints in the temperature range of 400°C to 850°C for slow heating and heating to achieve the effect of sensitization treatment;

[0050] S4. Model construction: scan the wire beam for the joints in the sensitization process, and construct a three-dimensional digital model according to the p...

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Abstract

The invention discloses an intergranular corrosion test method for stainless steel welded joints. The intergranular corrosion test method comprises the following steps: S1, acquiring a sample: selecting three stainless steel welded joints to be subjected to corrosion test from sample areas with the same production batch number, the same placement environment and the same specification; s2, joint treatment is conducted, specifically, the three selected stainless steel welded joints are cleaned, and the stainless steel welded joints are treated through a cleaning reagent; s3, sensitization treatment is conducted, specifically, the three stainless steel welded joints are placed in the temperature range of 400-850 DEG C to be slowly heated, and the sensitization treatment effect is achieved; s4, model construction: performing wire harness scanning on the joint in the sensitization treatment process, and constructing a three-dimensional digital model according to parameters obtained by scanning; and S5, performing simulation processing: performing simulation processing on the three-dimensional digital analog by adopting simulation software. According to the method, simulation software is adopted to perform simulation processing on the constructed three-dimensional digital model, so that the test effect on the intergranular corrosion of the stainless steel welded joint is achieved.

Description

technical field [0001] The invention belongs to the technical field of intergranular corrosion of stainless steel welded joints, and in particular relates to a test method for intergranular corrosion of stainless steel welded joints. Background technique [0002] The intergranular corrosion test of stainless steel is an important test for the physical and chemical detection of stainless steel. At present, the mechanical test equipment for the intergranular corrosion test of stainless steel is mainly composed of a temperature-adjusting electric furnace, a ground conical flask, and a serpentine condenser. After the stainless steel sample is treated, put the sample and the corrosion solution into the ground conical flask together, and heat it with an electric furnace to ensure that it is boiled and kept for a certain period of time (according to the requirements of material technical standards). The conical flask is sealed with a rubber stopper, and a serpentine condenser tube ...

Claims

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Application Information

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IPC IPC(8): G01N17/00G06F30/20G06T17/00
CPCG01N17/006G06F30/20G06T17/00
Inventor 贾仁萍孙玉澄李曙光陆林和魏意林
Owner 江苏容大材料腐蚀检验有限公司
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