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A cold-formed hot-rolled pickling high-strength steel antirust liquid, its preparation method and application

A technology for hot-rolling pickling and anti-rust solution, which is applied in the field of cold-forming hot-rolling pickling high-strength steel anti-rust solution, can solve the problems of high-strength steel being easy to rust, etc., and achieves excellent anti-rust performance, simple operation and good mechanics. performance effect

Active Publication Date: 2021-03-12
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a cold-formed hot-rolled pickling high-strength steel antirust solution, its preparation method and application, which solves the problem that cold-formed hot-rolled pickled high-strength steel is easy to rust, and can be used for cold-formed hot-rolled pickling High-strength steel is used for long-term anti-rust, and the cold-formed hot-rolled pickled high-strength steel after treatment not only has good mechanical properties, but also has good anti-rust effect, simple operation, low production and processing costs, and is a green steel The production process has good social and environmental benefits

Method used

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  • A cold-formed hot-rolled pickling high-strength steel antirust liquid, its preparation method and application

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Effect test

Embodiment 1

[0045] Embodiment 1 The preparation method of a kind of cold-forming hot-rolled pickling high-strength steel antirust liquid of the present invention:

[0046] 1) Preparation of microemulsion

[0047] Add glucose and fatty acid methyl ester in propylene glycol, the add-on of glucose is 32 grams in every liter of propylene glycol solution, and the add-on of fatty acid methyl ester is 51 grams in every liter of propylene glycol solution.

[0048] Under the condition of temperature of 150 DEG C and pressure of 0.6MPa, stirring rapidly for 2 hours, a microemulsion is formed, and glucose and fatty acid methyl ester form sucrose fatty acid ester through transesterification in the microemulsion environment.

[0049] 2) Prepare phosphoric acid mixture

[0050] Prepare a phosphoric acid solution with a concentration of 1.1%, add lauric acid monoester 135mg / L, palmitic acid monoester 230mg / L and stearic acid triester 160mg / L to the phosphoric acid solution, stir for 35 minutes at a spe...

Embodiment 2

[0063] A kind of preparation method of cold-forming hot-rolled pickling high-strength steel antirust liquid of the present invention:

[0064] 1) Preparation of microemulsion

[0065] Glucose and fatty acid methyl esters were added to propylene glycol in an amount of 42 grams per liter of propylene glycol for glucose and 38 grams of fatty acid methyl esters per liter of propylene glycol.

[0066] At a temperature of 147°C and a pressure of 0.7 MPa, stir rapidly for 3 hours to form a microemulsion. Glucose and fatty acid methyl esters form sucrose fatty acid esters through transesterification in the microemulsion environment. 2) Preparation of phosphoric acid mixture

[0067] Preparation concentration is the phosphoric acid solution of 1.7wt.%, in the phosphoric acid solution of 1.7wt.%, add lauric acid monoester 111mg / L, palmitic acid monoester 220mg / L and stearic acid triester 145mg / L, with 125 rev / minute speed stirring for 35 minutes to obtain a phosphoric acid mixture.

...

Embodiment 3

[0078] Embodiment 3 The preparation method of a kind of cold-forming hot-rolled pickling high-strength steel antirust liquid of the present invention:

[0079] 1) Preparation of microemulsion

[0080] Add glucose and fatty acid methyl ester in propylene glycol, the add-on of glucose is 15 grams in every liter of propylene glycol solution, and the add-on of fatty acid methyl ester is 25 grams in every liter of propylene glycol solution.

[0081] Under the condition of temperature of 150 DEG C and pressure of 0.6MPa, stirring rapidly for 2 hours, a microemulsion is formed, and glucose and fatty acid methyl ester form sucrose fatty acid ester through transesterification in the microemulsion environment.

[0082] 2) Prepare phosphoric acid mixture

[0083] Prepare a phosphoric acid solution with a concentration of 0.5%, add lauric acid monoester 40mg / L, palmitic acid monoester 150mg / L and stearic acid triester 98mg / L to the phosphoric acid solution, and stir for 35 minutes at a s...

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Abstract

A cold-formed hot-rolled pickling high-strength steel antirust solution, its preparation method and application, relate to the technical field of antirust treatment in hot rolling, and the antirust solution includes microemulsion, phosphoric acid mixed solution and dimethyldichlorosilane , wherein, the microemulsion uses propylene glycol as a solvent and contains glucose and fatty acid methyl ester; the phosphoric acid mixed solution uses 0.5 to 2wt.% phosphoric acid solution as a solvent and contains lauric acid monoester, palmitic acid monoester and stearic acid triester. The anti-rust solution can be used for long-term rust prevention of cold-formed hot-rolled pickled high-strength steel. The cold-formed hot-rolled pickled high-strength steel after treatment has good mechanical properties and good anti-rust effect. Simple, low production and processing costs, belongs to the steel green environmental protection production process, has good social and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of antirust treatment in hot rolling, and in particular relates to an antirust solution for cold-formed hot-rolled pickled high-strength steel, a preparation method and application thereof. Background technique [0002] As my country's basic industry, the iron and steel industry has developed rapidly since the reform and opening up, and has been in a high-speed development stage in recent years. [0003] Cold-formed hot-rolled pickled high-strength steel has been widely used in many automobile manufacturers due to its advantages of high strength and excellent processing performance. [0004] The cold-formed hot-rolled pickled high-strength steel obtained from the chemical composition and production process of the current hot-rolled pickled high-strength steel has poor corrosion resistance, especially in an environment with high humidity. produce surface rust. [0005] The surface corrosion of steel product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/18C23F11/10B21C37/02C22C38/02C22C38/04C22C38/06C22C38/12
CPCB21C37/02C22C38/02C22C38/04C22C38/06C22C38/12C23F11/10C23F11/188
Inventor 祁庆琚李恩超刘明亮
Owner BAOSHAN IRON & STEEL CO LTD
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