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A kind of environment-friendly inorganic anti-oxidation lubricant for steel hot rolling

An environmentally friendly and lubricant technology, applied in the field of hot rolling of steel, can solve problems such as difficult removal and environmental pollution, and achieve the effects of low cost, simple preparation process and bright surface

Active Publication Date: 2019-08-13
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although traditional organic lubricating oils have certain lubricating and anti-oxidation effects, they are not easy to remove and pollute the environment.

Method used

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  • A kind of environment-friendly inorganic anti-oxidation lubricant for steel hot rolling
  • A kind of environment-friendly inorganic anti-oxidation lubricant for steel hot rolling
  • A kind of environment-friendly inorganic anti-oxidation lubricant for steel hot rolling

Examples

Experimental program
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Effect test

preparation example Construction

[0035] Its preparation method comprises the following steps:

[0036] Dissolve potassium dihydrogen phosphate in 40°C constant temperature water to obtain a primary solution;

[0037] Mix potassium tripolyphosphate and sodium tripolyphosphate evenly into a heating furnace, pass argon gas at a rate of 300ml / min for 5 minutes, raise the temperature of the heating furnace to 300°C, sinter for 30 minutes and keep in an argon gas atmosphere with The furnace is cooled to room temperature, mashed and dissolved in the primary solution;

[0038] Nano zirconia powder with a diameter of 30 nm is added to the obtained solution, and the mixture is stirred evenly to obtain a finished product.

Embodiment 1

[0040] The index data of a kind of environment-friendly inorganic lubricant for hot rolling of steel of the present embodiment are shown in Table 1:

Embodiment 2

[0042] The high-temperature ball-disk friction experiment was carried out at 700°C. The material of the test disk was ordinary low-carbon steel with a specification of φ50X3mm. The experimental parameters are set as follows: the rotation radius is 5mm, the rotation speed is 120r / min, and the experimental load is 15N. The control experiment conditions are as follows: 1) During the experiment, the inorganic lubricant invented in this paper is not sprayed on the experimental disc, and the ball-disk friction experiment is carried out at 700 ° C for 1 hour; 2) During the experiment, the experimental disc is sprayed on the experimental disc. The inventive inorganic lubricant, at a rate of 30 ml / min, was subjected to a ball-disk friction test at 700° C. for 1 hour.

[0043] The results showed that under the experimental conditions without spraying inorganic lubricants, the surface of the experimental disk was severely oxidized and the oxide scale was severely peeled off; while under ...

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Abstract

The invention discloses an environment-friendly inorganic antioxidative lubricant for hot rolling of steel. The lubricant comprises the following raw materials by weight: 75 to 80% of water, 5 to 10% of potassium dihydrogen phosphate, 7 to 15% of polyphosphate and 0.1 to 0.5% of nanometer oxide powder. A preparation method for the lubricant comprises the following steps: dissolving potassium dihydrogen phosphate in water so as to obtain a primary solution; then subjecting polyphosphate to sintering, cooling and triturating at a certain temperature and dissolving triturated polyphosphate in the primary solution; and finally adding nanometer oxide powder and carrying out uniform mixing so as to obtain the inorganic antioxidative lubricant. The inorganic antioxidative lubricant has excellent lubrication performance and cooling performance, can effectively inhibit excess oxidation of the surfaces of a roller and steel and enables a rolled product to have a shiny surface and surface oxidation of the roller to be uniform. The inorganic antioxidative lubricant also has the excellent characteristics of easy solubility in water, easiness in removal, no pollution and the like.

Description

technical field [0001] The invention belongs to the field of hot rolling of steel, and in particular relates to an environment-friendly inorganic antioxidant lubricant for hot rolling of steel and a preparation method thereof Background technique [0002] Hot rolling of steel is an important process in the plastic processing of steel. Its outstanding feature is the high rolling temperature: the steel is heated to above 900 °C, and the temperature of the rolls at the moment of contact with the steel also rises to 500-600 °C; at high temperatures, the rolls and the steel are also prone to excessive oxidation, resulting in increased roll consumption and waste of steel. [0003] The use of lubricants during the hot rolling of steel can form a thin lubricating film between the rolls and the steel; the existence of the lubricating film isolates the rolls from the steel, reducing rolling force and roll consumption while reducing Heat transfer between steel and rolls. At the same...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M173/02C10N30/04C10N30/06C10N30/10C10N40/24
CPCC10M173/02C10M2201/062C10M2201/085C10N2030/04C10N2030/06C10N2030/10C10N2030/64C10N2040/24C10N2040/246
Inventor 孔宁黄景辉朱伊哲张赵宁李洪波张杰
Owner UNIV OF SCI & TECH BEIJING