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A kind of magnetic abrasive and preparation method thereof

A technology of magnetic abrasives and magnetic materials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of long time required for the preparation of magnetic abrasives, uniform mixing of different metal powders, and further improvement in performance, and achieve simple technical solutions Controllable, good surface quality, and improved grinding efficiency

Active Publication Date: 2020-12-01
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Meng Li of Guangdong University of Technology's master's degree thesis "Preparation Process of Bonded Magnetic Abrasives and Research on Grinding Performance" (2008.5) discloses a preparation method of magnetic abrasives. Part 3.4.1 of the paper explores the effect of mixing methods on magnetic properties. The influence of abrasives, experiments have proved that pure iron powder, Al 2 o 3 powder as raw material, the mass ratio of pure iron powder to alumina powder is 4:1, the binder is prepared with epoxy resin E-44 and E-51 at a mass ratio of 5:5, and the ball mill is mixed for 6 to 8 hours, and the mixer Stir for 30 minutes, and the combination of room temperature curing and heating curing under the pressurized mold is the best way to cure the magnetic abrasive. The manual mixing time is short and the strength is not enough. It is difficult to mix dissimilar metal powders of different particle sizes evenly.
The preparation of the magnetic abrasive disclosed in this paper takes a long time, the particle size is not uniform, and its performance still needs to be further improved.

Method used

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  • A kind of magnetic abrasive and preparation method thereof
  • A kind of magnetic abrasive and preparation method thereof
  • A kind of magnetic abrasive and preparation method thereof

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Embodiment 1

[0059] The magnetic abrasive in this embodiment includes a core and a shell covering the surface of the core. The shell is a metal salt, and the core is a magnetic abrasive body. A bond is formed between the metal salt and the abrasive former in the magnetic abrasive body. The magnetic abrasive body includes the following components in parts by weight: 3.4 parts of abrasive forming agent, 16 parts of Fe powder, Al 2 o 3 Powder 1.6 parts. Metal salt is FeCl 3 2.7 servings. The abrasive forming agent is composed of alginate, carboxymethyl cellulose and polyacrylic acid resin in a mass ratio of 1.4:0.2:1.8. The particle size of iron powder is W3, Al 2 o 3 The particle size of the powder is W1. The morphology of the magnetic abrasive material of the present embodiment is as figure 1 shown.

[0060] The preparation method of the magnetic abrasive material of the present embodiment may further comprise the steps:

[0061] 1) Take the raw materials for subsequent use acco...

Embodiment 2

[0066] The magnetic abrasive in this embodiment includes a core and a shell covering the surface of the core. The shell is a metal salt, and the core is a magnetic abrasive body. A bond is formed between the metal salt and the abrasive former in the magnetic abrasive body. The magnetic abrasive body includes the following components in parts by weight: 3.4 parts of abrasive forming agent, 16 parts of Fe powder, Al 2 o 3 Powder 1.6 parts. Metal salt is MgCl 2 2.7 servings. The abrasive forming agent is composed of alginate, carboxymethyl cellulose, and polyamide resin in a mass ratio of 1.4:0.2:1.8; the particle size of the iron powder is W3, Al 2 o 3 The particle size of the powder is W1. The morphology of the magnetic abrasive material of the present embodiment is as figure 2 shown.

[0067] The preparation method of the magnetic abrasive material of the present embodiment may further comprise the steps:

[0068] 1) Take the raw materials for subsequent use accord...

Embodiment 3

[0073] The magnetic abrasive in this embodiment includes a core and a shell covering the surface of the core. The shell is a metal salt, and the core is a magnetic abrasive body. A bond is formed between the metal salt and the abrasive former in the magnetic abrasive body. The magnetic abrasive body includes the following components in parts by weight: 3.4 parts of abrasive forming agent, 16 parts of Fe powder, Al 2 o 3 Powder 1.6 parts. Metal salt is BaCl 2 2.7 servings. The abrasive forming agent is composed of alginate, carboxymethyl cellulose, and epoxy resin in a mass ratio of 1.4:0.2:1.8; the particle size of the iron powder is W3, Al 2 o 3 The particle size of the powder is W1. The morphology of the magnetic abrasive material of the present embodiment is as image 3 shown.

[0074] The preparation method of the magnetic abrasive material of the present embodiment may further comprise the steps:

[0075] 1) Take the raw materials according to the following par...

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Abstract

The invention relates to a magnetic abrasive and a preparation method thereof and belongs to the technical field of abrasives. The magnetic abrasive includes, by weight, 1-15 parts of an abrasive shaping agent, 0.1-20 parts of a magnetic material, 0.1-10 parts of abrasive granules, and 0.3-15 parts of metal salts being water soluble salts of Na, K, Ca, Al, Cu, Fe, Pb, Zn, Ba or Ni. Besides the magnetic material, abrasive granules and shaping agent, the magnetic abrasive also contains the metal salts that can prevent deformation of the abrasive granules due to adhesion effect among the magneticabrasive granules.

Description

technical field [0001] The invention relates to a magnetic abrasive and a preparation method thereof, belonging to the technical field of abrasive. Background technique [0002] Magneto-rheological grinding technology is the key technology to achieve high-efficiency ultra-precision machining of free-form surfaces. The focus is on the use of the magnetic field to make the abrasive contact with the workpiece and generate a certain force, and the grinding process is realized through the relative movement between the workpiece and the abrasive. Compared with traditional processing, it has better flexibility, stronger self-adaptability, and higher controllability. It also has the advantages of small temperature rise, high efficiency, and no need for modification. As the key to magnetorheological grinding, magnetic abrasives directly affect the quality and efficiency of processing. [0003] At present, the preparation techniques of magnetic abrasives include: mechanical mixing m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14
CPCC09K3/1436
Inventor 徐明艳王志强闫宁
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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