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A method for preparing corrosion samples of welded joints of metal composite plates

A metal composite plate and welded joint technology, which is applied in the preparation, sampling, and instrumentation of test samples, can solve problems such as the inability to ensure the density of the isolation layer and the corrosion sample, and the isolation of one surface is not allowed, so as to overcome the problem of processing Difficulty, the effect of high processing precision

Active Publication Date: 2021-07-16
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology

There are two problems with this method. One is that the tightness of the bond between the isolation layer and the corrosion sample cannot be guaranteed. The other is that in some corrosion test standards, it is necessary to conduct a corrosion resistance test on the entire cladding material, and it is not allowed to conduct a corrosion test on one surface. quarantine

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  • A method for preparing corrosion samples of welded joints of metal composite plates
  • A method for preparing corrosion samples of welded joints of metal composite plates
  • A method for preparing corrosion samples of welded joints of metal composite plates

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Embodiment Construction

[0030] Below, the structure and working principle of the present invention will be further described in conjunction with the accompanying drawings.

[0031] The metal composite plate includes a cladding layer and a base layer, and the preparation method of the welded joint corrosion sample of the metal clad plate of the present invention is to prepare a welded joint corrosion sample with only cladding components, see Figure 1 to Figure 6 , the preparation method of metal clad plate welded joint corrosion sample of the present invention comprises:

[0032] Step 1, select a metal composite plate blank sample 10 with welded joints.

[0033] Due to the deviation of the welding process, different metal composite panels have different welding deformations, and the cladding of the metal composite panels is generally thin, with a thickness between 1 and 3 mm. Once the deformation of the welding test panel is too large, the standard will not be obtained. Corrosion samples, therefore,...

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Abstract

The invention discloses a method for preparing a corrosion sample of a welded joint of a metal composite plate, comprising: step 1, selecting a blank sample of a metal composite plate with a welded joint; , and smooth the surface of the cladding; Step 3, using the surface of the cladding as a reference plane, use a planer to thin the blank sample to the first thickness; Step 4, use a clamp to clamp the blank sample so that the surface of the base layer faces upward; Step 5 , the fixture is installed on the milling machine, and the blank sample is thinned to the second thickness by the milling machine; Step 6, the blank sample is thinned to the target thickness by the grinding machine, so as to obtain the blank sample whose upper and lower surfaces are cladding components; step Seventh, cut the length of the blank sample to the target length to obtain the corrosion sample. By adopting the preparation method of the invention, qualified corrosion samples can be obtained quickly and efficiently, and the processing precision is high.

Description

technical field [0001] The invention relates to the field of corrosion performance inspection of welded joints, in particular to a method for preparing corrosion samples of welded joints of metal composite plates. Background technique [0002] One of the fields where metal composite panels are widely used is the transportation and storage of highly corrosive media, such as oil and gas pipelines, chemical transportation and storage, desulfurization and denitrification pipelines, etc. It is generally composed of low-alloy steel and corrosion-resistant materials. Commonly used corrosion-resistant materials are stainless steel, nickel-based alloys, and titanium alloys. In these industries that transport corrosive media, strict corrosion resistance tests are required for corrosion-resistant materials. For single metal materials, it can be directly processed into samples according to the corresponding intergranular corrosion or pitting corrosion test requirements, and then the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N1/32
CPCG01N1/286G01N1/32G01N2001/2866G01N2001/2873
Inventor 钱伟方吴巍翁思源曹能刘硕
Owner BAOSHAN IRON & STEEL CO LTD
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