Method for acquiring iron-based material corrosion products layer by layer
A technology for corrosion products and iron-based materials, applied in the direction of analysis materials, weather resistance/light resistance/corrosion resistance, measuring devices, etc., can solve corrosion morphology damage, unfavorable metal corrosion definition, easy to destroy massive or flaky corrosion products and other problems, to achieve the effect of high selectivity, simple processing, and large water permeability
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Embodiment 1
[0026] The layered collection method of the corrosion product of the methanol rectifying tower inner wall of the present embodiment comprises the following steps:
[0027] Step 1, first select the corrosion product collection area of the methanol rectification tower inner wall, then utilize hairbrush to carry out surface cleaning to the collection area; The material of the methanol rectification tower inner wall is 16MnR, the surface after cleaning (such as figure 1 shown);
[0028] Step 2, the acetone solution of cellulose acetate after surface cleaning in step 1 is repeatedly coated on the surface of the corrosion product collection area to form a 0.8mm thick coating layer (such as figure 2 shown), after the coating layer is naturally cured for 2.5 hours, the coating layer with a layer of corrosion products bonded (such as image 3 shown), and finally placed in a wide-mouth glass bottle, sealed and numbered for preservation; wide-mouth glass bottle
[0029] The specific...
Embodiment 2
[0037] The layered collection method of the corrosion product on the inner wall of the natural gas raw material gas pipeline in this embodiment comprises the following steps:
[0038]Step 1. First select the corrosion product collection area on the inner wall of the natural gas raw material gas pipeline, and then use a brush to clean the surface of the corrosion product collection area on the inner wall of the natural gas raw material gas pipeline; the material of the natural gas raw material gas pipeline is 20 steel;
[0039] Step 2. Repeatedly coat the acetone solution of cellulose acetate after surface cleaning in step 1 on the corrosion product surface collection area to form a 0.5 mm thick coating layer. After the coating layer is naturally cured for 2 hours, remove the adhesive The coating layer with a layer of corrosion products shall be sealed and stored in a wide-mouth glass bottle, and shall be numbered;
[0040] The specific process of repeatedly coating a 0.5mm thi...
Embodiment 3
[0046] The layered collection method of the iron-based material corrosion product on the inner wall of the oil field sewage reinjection well oil casing in this embodiment includes the following steps:
[0047] Step 1. First, select the corrosion product collection area on the inner wall of the oil field sewage reinjection well oil casing, and then use a brush to clean the surface of the corrosion product collection area of the oil field sewage reinjection well oil casing; the oil field sewage reinjection well Oil casing is J55 oil pipe;
[0048] Step 2. Repeatedly coat the acetone solution of cellulose acetate cleaned in step 1 on the corrosion product surface collection area to form a 1mm thick coating layer. After the coating layer is naturally cured for 3 hours, peel off the adhesive There is a layer of coating layer of corrosion products, placed in a wide-mouth glass bottle for sealed preservation, and numbered;
[0049] The specific process of repeatedly coating a 1mm ...
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