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A kind of corrosive agent for preparing carbide in alloy steel, its preparation method, and carbide preparation method

A technology of alloy steel and carbide, applied in the field of carbide preparation in steel, can solve the problems of long carbide preparation time, long electrolysis time, cumbersome operation, etc., and achieve the effect of easy control of corrosion time, simple composition and good application prospects

Active Publication Date: 2019-06-25
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of carbides in steel by electrolytic extraction takes a long time to prepare, the operation is cumbersome, and the efficiency is low.
[0004] The Chinese invention patent with the application publication number CN101915773A discloses a method for non-destructive detection of the Laves phase of 9% Cr steel. The pH of the electrolyte solution is 3~4, the temperature is below +5°C, and the current density is controlled at 0.02~0.03cm 2 , electrolyze for 90-120min, collect the electrolyzed powder, rinse with distilled water and alcohol for 3 times until no chloride ions exist, and dry to obtain carbide. This method also has the problems of long electrolysis time, cumbersome steps and low efficiency.

Method used

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  • A kind of corrosive agent for preparing carbide in alloy steel, its preparation method, and carbide preparation method
  • A kind of corrosive agent for preparing carbide in alloy steel, its preparation method, and carbide preparation method
  • A kind of corrosive agent for preparing carbide in alloy steel, its preparation method, and carbide preparation method

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Embodiment 1

[0042] The corrosive agent that is used to prepare carbide in alloy steel of the present embodiment is made by the raw material of 0.5g sodium dodecylbenzene sulfonate and following volume:

[0043] Hydrochloric acid 10mL, nitric acid 5mL, gluconic acid 2mL, deionized water 83mL; among them, the mass fraction of hydrochloric acid ≥ 36%; the mass fraction of nitric acid ≥ 62%; the mass fraction of gluconic acid ≥ 60%.

[0044] The preparation method of the etchant for preparing carbides in alloy steel in this embodiment includes the following steps: taking the above-mentioned raw materials according to the formula and stirring them evenly.

[0045] The preparation method of carbide in the alloy steel of the present embodiment comprises the following steps:

[0046] 1) Put the above-mentioned corrosive agent into the DS-101S collector-type constant-temperature heating magnetic stirrer with a power of 3kW, and raise the temperature of the corrosive agent to 50°C; In the beaker o...

Embodiment 2

[0051] The corrosive agent that is used to prepare the carbide in the alloy steel of the present embodiment is made by the raw material of 1.5g fatty alcohol ether sodium sulfate and following volume:

[0052] Hydrochloric acid 6mL, nitric acid 3mL, gluconic acid 3mL, deionized water 88mL. Wherein, the mass fraction of hydrochloric acid ≥ 36%; the mass fraction of nitric acid ≥ 62%; the mass fraction of gluconic acid ≥ 60%.

[0053] This embodiment is used to prepare the preparation method of the corrosive agent of carbide in alloy steel, comprises the following steps:

[0054] Measure the above-mentioned raw materials according to the formula, add nitric acid, hydrochloric acid, gluconic acid and fatty alcohol ether sodium sulfate into deionized water in sequence, and mix well.

[0055] The preparation method of carbide in the present embodiment alloy steel comprises the following steps:

[0056] 1) Put the above corrosive agent into the DS-101S collector-type constant temp...

Embodiment 3

[0059] The corrosive agent used to prepare carbides in alloy steel of the present embodiment is made of 2g sodium lauryl sulfate and the raw materials of the following volumes:

[0060] Hydrochloric acid 12mL, nitric acid 5mL, gluconic acid 3mL, distilled water 80mL; wherein, the mass fraction of hydrochloric acid ≥ 36%; the mass fraction of nitric acid ≥ 62%; the mass fraction of gluconic acid ≥ 60%.

[0061] This embodiment is used to prepare the preparation method of the corrosive agent of carbide in alloy steel, comprises the following steps:

[0062] Measure the above-mentioned raw materials according to the formula, add nitric acid, hydrochloric acid, gluconic acid and sodium lauryl sulfate into distilled water in sequence, and stir evenly.

[0063] The preparation method of carbide in the alloy steel of the present embodiment comprises the following steps:

[0064] 1) Put the above-mentioned corrosive agent into the DS-101S collector-type constant-temperature heating m...

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Abstract

The invention relates to a corrosive agent used for preparing a carbide in alloy steel, a preparation method of the corrosive agent and a preparation method of the carbide, and belongs to the technical field of preparation of the carbide in steel. The corrosive agent used for preparing the carbide in the alloy steel is prepared from a surface active agent and the following raw materials of, by volume parts, 6-12 parts of hydrochloric acid, 1-5 parts of nitric acid and 1-3 parts of gluconic acid, wherein the mass ratio of the surface active agent to the hydrochloric acid is 0.5-2: 6.9-13.8. Thecorrosive agent used for preparing the carbide in the alloy steel is simple in composition, relatively stable and good in reproducibility, not only can effectively corrode steel substrates, but alsocan relieve corrosion of the carbide in the steel, and can achieve rapid preparation of the carbide in the alloy steel.

Description

technical field [0001] The invention relates to a corrosive agent for preparing carbides in alloy steel, a preparation method thereof, and a preparation method of carbides, belonging to the technical field of carbide preparations in steel. Background technique [0002] With the continuous advancement of industrial technology, molds are mainly developed in the direction of large-scale, complex, precise, high-life, and high-efficiency, which makes their service environment more and more harsh, and also puts forward higher performance requirements for mold steel. Studies have shown that fine, dispersed carbide particles play a decisive role in the high-temperature hardness, high-temperature strength, tempering stability, and thermal fatigue resistance of die steel, that is, the precipitated fine and dispersed carbide is the main strengthening phase of hot-work die steel. How to obtain the fine carbides and mass fraction in steel is one of the main ways to develop high-performan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F1/28G01N1/32
Inventor 王要利宋克兴张彦敏张学宾皇涛宋宇陈赛王文超刘建波何慧慧刘锐屈龙凤乔兴雨贾天琪刁国宁郑宇聪
Owner HENAN UNIV OF SCI & TECH