Inspection method of streamline of blade of stainless steel die forging and preparation method of corrosive solution

A stainless steel mold and inspection method technology, applied in the field of physical and chemical inspection, can solve the problems of streamline corrosion, difficulty in judging product quality, and inability to determine the streamline, and achieve the effect of determining the service life of the product

Active Publication Date: 2021-01-05
CHENGDU ENGINE GROUP
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Problems solved by technology

[0002] For the newly produced stainless steel die forgings, whether the streamline is normal is the key factor for whether the product is qualified or not. The normal streamline helps to improve the service life of the product. Therefore, it is important to study how to conduct a streamline test on stainless steel die forgings. In the specific inspection process, different inspection processes and different corrosion materials will cause different streamline display effects, and poor streamline display will make it difficult to judge product quality, thus Causes errors in the judgment of product adaptation life
[0003] In view of the streamline corrosion of some stainless steel materials, it is impossible to judge whether the streamline is normal. The previous method is to find an alloy steel material that is easy to corrode and simulate the forging process under the same forging conditions, and then check the streamline of the alloy steel material. This method is representative to a certain extent, but due to different materials, there are still differences in physical properties, which cannot be fully represented. Therefore, it is necessary to study the streamline corrosion technology of stainless steel.

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  • Inspection method of streamline of blade of stainless steel die forging and preparation method of corrosive solution

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Embodiment 1

[0035] Embodiment 1: as figure 1 As shown, this embodiment provides a method for inspecting the streamline of a stainless steel die forging blade, which includes the following steps:

[0036] S001: Cut and sample the blade along the line at the specified position, which is usually selected according to the technical requirements of the blade.

[0037] S002: Grinding the surface of the sampling blade to be inspected; specifically, in the step of grinding the surface of the sampling blade to be inspected, the wet grinding method with cooling liquid is adopted. The finish needs to be 0.8.

[0038] S003: Clean the sampling blade after grinding with 60# gasoline.

[0039] S004: Use water: ammonium persulfate: aqua regia = 10:3:3 to prepare the etchant; it should be noted that there is no sequence restriction on this step and the above three steps. In some cases, this step can be carried out completely. The first step is to mix the corrosive agent well, and then sample and grind ...

Embodiment 2

[0043] Embodiment 2: This embodiment provides a method for making a corrosion solution for streamline inspection of blades of stainless steel die forgings. The corrosion agent is prepared in a ratio of water: ammonium persulfate: aqua regia=10:3:3. The specific process for configuring the corrosion agent is as follows:

[0044] Pour the specified volume of water into the test container first;

[0045] Add ammonium persulfate in proportion according to the water capacity, and stir with a glass rod while adding;

[0046] After the ammonium persulfate is completely dissolved in the water, add aqua regia in proportion according to the water capacity, and stir with a glass rod while adding.

[0047] Specifically, for example, 2000ml of water + 600g of ammonium persulfate + 600ml of aqua regia can be used to prepare the corrosion solution. First pour 2000ml of water into the test container, then slowly add the weighed ammonium persulfate, and stir with a glass rod while adding. Aft...

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Abstract

The invention relates to the field of physical and chemical inspection methods, in particular to a stainless steel die forging blade streamline inspection method and a corrosion liquid manufacturing method. According to the stainless steel die forging blade streamline inspection method, a specific corrosive agent proportioning method and a specific flow are adopted for inspection of a stainless steel die forging blade streamline, and a clear streamline of a stainless steel die forging blade can be obtained quickly and accurately. The problems are perfectly solved that a traditional corrosive agent has poor corrosion effect on stainless steel materials and leads to unclear streamline display, but the inspection error is caused by the differences in physical properties between the substitutematerials and the stainless steel materials since an alternative material (such as a gold steel material) is used for the streamline inspection. In turn, a user can accurately judge the product quality of the stainless steel, and determine the service life of a product.

Description

technical field [0001] The invention relates to the field of physical and chemical detection methods, in particular to a method for inspecting the streamline of a blade of a stainless steel die forging and a method for producing a corrosive solution. Background technique [0002] For the newly produced stainless steel die forgings, whether the streamline is normal is the key factor for whether the product is qualified or not. The normal streamline helps to improve the service life of the product. Therefore, it is important to study how to conduct a streamline test on stainless steel die forgings. In the specific inspection process, different inspection processes and different corrosion materials will cause different streamline display effects, and poor streamline display will make it difficult to judge product quality, thus Causes errors in judging the product's adaptive life. [0003] In view of the streamline corrosion of some stainless steel materials, it is impossible t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/00C23F1/28
CPCC23F1/28G01B21/00
Inventor 龚晓宁刘卫东谢善周景胜
Owner CHENGDU ENGINE GROUP
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