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Quasi-crystal abrasive paste applicable to surface mechanical finishing of soft metals

A technology of abrasive paste and soft metal, applied to polishing compositions containing abrasives, other chemical processes, chemical instruments and methods, etc., can solve problems such as easy embedding of abrasive particles, secondary scratches, core technology monopoly, etc., and achieve Effects of large macroscopic residual stress, maintaining dimensional accuracy, and high-efficiency lightening

Inactive Publication Date: 2013-08-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For soft alloy materials such as Al, Cu, Mg, Ti metals / alloys and related solders, due to their low hardness (general Vickers hardness Hv≤4GPa), during mechanical grinding, if the abrasive hardness used is very high (such as superhard Diamond or silicon carbide, etc.), abrasive particles are easy to embed and cause secondary scratches on soft metal or alloy samples, resulting in new pits and scratches on the surface of the latter, which deteriorates the surface roughness and gloss of the workpiece, making it difficult to meet the requirements of gloss. Finishing needs
At present, chemical polishing or electrolytic polishing technology is widely used for surface treatment in soft metal industries such as aluminum alloy and copper alloy, but there are problems such as low surface roughness, unsatisfactory surface quality, high cost, and large pollution.
Recently, foreign countries have developed a new type of polishing material that can be applied to the surface polishing of soft alloy materials, but its core technology is monopolized by foreign companies, resulting in high prices for domestic related products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The invention discloses a preparation method of a quasi-crystal abrasive paste suitable for smoothing the surface of soft metals. It includes the following steps:

[0033] (1) Prepare the grinding paste according to the mass percentage of quasi-crystal abrasive 30% + water-soluble paste 70%. The quasicrystalline abrasive is the quasicrystalline powder material mentioned in any one of the above-mentioned Summary of the Invention 1-5. The water-soluble paste is a common abrasive paste in the market;

[0034] (2) Melt the water-soluble paste in an 80°C water bath, and mix it with ultrasonic stirring to form a uniform liquid paste;

[0035] (3) Add a certain amount of quasicrystals to the liquid paste in (2), ultrasonicate for 5 to 30 minutes, and stir continuously with a glass rod to disperse the powder evenly in the solution to obtain a uniform and stable mixed slurry;

[0036] (4) Maintain ultrasonic treatment and stirring, and at the same time, slowly cool down the m...

Embodiment 2

[0038] The invention discloses a preparation method of a quasi-crystal abrasive paste suitable for smoothing the surface of soft metals. It includes the following steps:

[0039] (1) The mass percentage ratio of the raw materials of the grinding paste is: 50% of the quasi-crystalline abrasive, and 50% of the oil-soluble paste. The quasicrystalline abrasive is the quasicrystalline powder material involved in any one of the above-mentioned contents of the invention 1 to 5; the oil-soluble paste is a common abrasive paste in the market;

[0040] (2) Melt the oil-soluble paste in a water bath at 80°C, and mix it into a uniform liquid paste by ultrasonic stirring;

[0041] (3) Add a certain amount of quasicrystals to the liquid paste in (2), ultrasonicate for 5 to 30 minutes, and stir continuously with a glass rod until the powder is evenly suspended and dispersed in the solution to obtain a uniform and stable mixed slurry;

[0042] (4) Continue to sonicate and stir, and slowly c...

Embodiment 3

[0044] The invention discloses a preparation method of a quasi-crystal abrasive paste suitable for smoothing the surface of soft metals. It includes the following steps:

[0045] (1) The mass percentage ratio of the raw materials of the grinding paste is: 30% quasicrystalline abrasive, 21.4% mixed fat, 32% oleic acid, and 13.3% vaseline. The content ratio of the paste can be adjusted according to actual needs, and the quasicrystalline abrasive is Al 62 Cu 25.5 Fe 12.5 Quasicrystalline powder, the particle size range is 8-15μm;

[0046] (2) Mix the mixed fat, oleic acid, and petrolatum according to the ratio in (1), and ultrasonically stir in a water bath at 80°C to form a uniform liquid paste;

[0047] (3) Add a certain amount of quasicrystals to the liquid paste in (2), ultrasonicate for 30 minutes, and stir with a glass rod until the powder is evenly dispersed and suspended in the solution to obtain a uniform and stable mixed slurry;

[0048] (4) Continue to sonicate an...

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Abstract

The invention discloses a quasi-crystal abrasive paste applicable to the surface mechanical finishing of soft metals, and the adopted abrasive material thereof is a quasi-crystal alloy powder material. The quasi-crystal abrasive paste comprises a quasi-crystal alloy and related phase materials; the granularity of a powdered abrasive material is less than or equal to 50mu m; the mass percentage of the quasi-crystal powdered abrasive material in the abrasive paste is 1-90%, and the balance of the abrasive paste refers to abradant auxiliary materials such as oil-soluble or water-soluble pastes and the like. According to the invention, based on the unique grinding behavior and mechanism, the abrasive paste has an efficient mechanical finishing and defect repair capacity to the surfaces of soft metals / alloy specimens or workpieces; and compared with traditional abrasive materials, a surface finishing effect required by workpieces can be achieved efficiently, and the erosion amount is low, therefore, the abrasive paste is applicable to the surface finishing of high-precision workpieces, namely, the dimensional accuracy of workpieces can be kept while the surface quality of workpieces is satisfied. The abrasive paste disclosed by the invention has the characteristics of high stability, high liquidity, no adhesiveness and easiness for cleaning, therefore, the abrasive paste is an ideal grinding material for the mechanical finishing of soft materials.

Description

technical field [0001] The invention relates to a quasi-crystal abrasive paste or slurry suitable for surface mechanical finishing treatment of soft metals / alloys with lower hardness (such as Al, Cu, Mg, Ti metals / alloys and related solders with Hv≤4GPa) , belongs to the technical field of surface mechanical finishing. It is characterized in that the quasicrystalline alloy powder material is used as the abrasive material, which has outstanding surface finishing and surface defect repair capabilities, and can obtain a high-smooth workpiece surface with a low amount of wear, and maintain the workpiece surface while meeting roughness requirements. Excellent dimensional accuracy; the abrasive paste / slurry also has the characteristics of high stability, high fluidity, and easy cleaning. Background technique [0002] Mechanical grinding is an important material surface finishing technology, and its process effect is mainly related to the characteristics of the selected abrasive / p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14C09G1/02
Inventor 羌建兵陈千宝董闯王英敏王清
Owner DALIAN UNIV OF TECH
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