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Copper alloy semi-continuous casting crystallizer high-temperature lubricating material and preparation method thereof

A lubricating material and semi-continuous casting technology, which is applied in the direction of lubricating compositions, petroleum industry, additives, etc., can solve the problems of lubricant and sidewall peeling, not being promoted, and reducing production efficiency, so as to reduce wear and friction coefficient , the effect of improving production efficiency

Inactive Publication Date: 2012-12-05
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent (CN 1159123C) discloses a high-temperature lubricant for continuous casting crystallizers and its preparation process. The product is mainly lubricated by brushing the inner wall of the crystallizer; the method is cumbersome to operate and reduces production efficiency. And it is easy to peel off the lubricant and side wall under the scraping of the ingot, resulting in lubrication failure
In summary, it can be seen that the above methods have certain advantages, but also have many defects, so they have not been promoted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 2.0g of nano-molybdenum disulfide and add it to a medium containing 200mL of 4% sodium silicate aqueous solution. After ultrasonic dispersion for 30min, add 10g of graphite fluoride, heat to 50°C, stir thoroughly for 12 hours, and cool to room temperature. , filter and dry, dry matter and 800g glass powder (mass ratio Na 2 O: SiO 2 : CaO=31:36:28), 180g of microcrystalline paraffin, put it into a ball mill and pulverize it to 150-160 mesh to obtain a high-temperature lubricating material, which is suitable for semi-continuous casting of H62 copper alloy.

Embodiment 2

[0022] Weigh 10g of nano-molybdenum disulfide and add it into a medium containing 200mL of 8% sodium silicate aqueous solution. After ultrasonic dispersion for 30min, add 14g of graphite fluoride, heat to 60°C, stir thoroughly for 12 hours, and cool to room temperature. Filter and dry, dry matter and 760g glass powder (mass ratio Na 2 O: SiO 2 : CaO=37.2:30:28), 200g of microcrystalline paraffin, put it into a ball mill and pulverize it to 150-160 mesh to obtain a high-temperature lubricating material, which is suitable for semi-continuous casting of H68 copper alloy.

Embodiment 3

[0024] Weigh 50g of nano-molybdenum disulfide and add it into a medium containing 200mL of a 15% sodium silicate aqueous solution. After ultrasonic dispersion for 30min, add 20g of graphite fluoride, heat to 70°C, stir fully for 24 hours, and cool to room temperature. Filter and dry, dry matter and 600g glass powder (mass ratio Na 2 O: SiO 2 : CaO=46.5:39:28), 300g of microcrystalline paraffin, put into a ball mill and pulverize to 150-160 mesh to obtain a high-temperature lubricating material.

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Abstract

The invention discloses a copper alloy D.C. casting crystallizer high-temperature lubricating material and a preparation method thereof. Glass dust as entraining agent, carbon monofluoride modified by nano-supramoly as lubricant, and microcrystalline paraffin as parting agent are mixed and crushed in a globe mill to generate the high-temperature lubricating material. On premise that the original material selecting mode is not changed and the working procedures are not increased, the slag inclusion problem of the traditional lubricant is solved; the ingredient proportion can be adjusted according to the casting temperature; thereby, the method is applicable to the D.C. casting of various copper alloys, the friction factor between the copper ingot and the crystallizer is greatly decreased, the abrasion on the surfaces of the copper ingot and the crystallizer is reduced, the casting speed of the copper ingot is improved, the breakout is reduced and the production efficiency is improved; the invention has significant application value in the high-temperature lubricating field of metallurgy, chemical engineering and hylology.

Description

technical field [0001] The invention relates to the field of metallurgical lubricating materials, in particular to a high-temperature lubricating material for a copper alloy semi-continuous casting crystallizer and a preparation method thereof. Background technique [0002] In the process of producing copper ingots by semi-continuous casting, the quality of ingots is closely related to factors such as casting temperature, casting speed, and cooling intensity. If the casting temperature is too high, the casting speed is too fast, and the cooling cannot keep up, it is easy to cause the ingot Cracks appear on the surface, affecting the structure of the ingot, and even leaking; therefore, high-temperature lubricating materials are often used in the semi-continuous casting process to ensure the normal progress of the casting process. In the past, gas protection and oil lubrication processes were widely used, but due to their high cost and cumbersome operation, flames and large sm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M141/00C10M125/22C10M125/18B22D11/07C10N40/20
Inventor 胡献国徐玉福
Owner HEFEI UNIV OF TECH
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