KR20090013369A - Abrasives preventing detachment of abrasives materials - Google Patents

Abrasives preventing detachment of abrasives materials Download PDF

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Publication number
KR20090013369A
KR20090013369A KR1020070077428A KR20070077428A KR20090013369A KR 20090013369 A KR20090013369 A KR 20090013369A KR 1020070077428 A KR1020070077428 A KR 1020070077428A KR 20070077428 A KR20070077428 A KR 20070077428A KR 20090013369 A KR20090013369 A KR 20090013369A
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KR
South Korea
Prior art keywords
abrasive
support
abrasives
falling
particles
Prior art date
Application number
KR1020070077428A
Other languages
Korean (ko)
Inventor
윤경수
Original Assignee
주식회사 세라코리
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 세라코리 filed Critical 주식회사 세라코리
Priority to KR1020070077428A priority Critical patent/KR20090013369A/en
Publication of KR20090013369A publication Critical patent/KR20090013369A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/14—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings

Abstract

The abrasive according to the present invention includes a support and a plurality of polishing protrusions formed on one surface of the support in a protrusion shape, and the polishing protrusion is integrally formed with the support.

According to the abrasive of the present invention, it is possible to prevent the problem of abrasive grain dropping and to provide an abrasive having excellent hardness. Furthermore, it does not chemically react with the abrasive, thereby providing a stable abrasive.

Description

Abrasives to prevent abrasive grains from falling off {ABRASIVES PREVENTING DETACHMENT OF ABRASIVES MATERIALS}

The present invention relates to an abrasive of a different material from the prior art, and more particularly, to an abrasive of a ceramic material which can fundamentally prevent falling of abrasive particles.

Conventional abrasives are generally prepared by attaching abrasive particles to a support, also commonly referred to as backing. That is, a ceramic or other abrasive particles are mixed on a support of various materials such as paper and synthetic resin, mixed with a binder such as resin, and fiber.

In the case of such a conventional abrasive, when a strong force is applied during operation, a force for separating the abrasive particles from the bonding portion of the support and the abrasive is inevitably applied. Therefore, when the work is performed in a harsh environment or when the polishing operation is performed for a long time, the particles do not adhere to the support and wear out, but are separated from the support. Therefore, there is a problem that the life of the abrasive is abnormally short, which leads to an increase in the cost of frequent abrasive replacement.

On the other hand, in the case of a nonwoven abrasive or the like in which the support is not present separately, there is no problem that the abrasive particles fall off from the support. However, such nonwoven abrasives have a problem that their use is particularly limited.

Moreover, in order to prevent the fall of abrasive grain conventionally, there exists the iron abrasive which integrated abrasive grain and support body. Such an abrasive is to create a support-integrated abrasive formed in the form of a projection by the abrasive roller process, it is given a hardness through heat treatment.

However, since the iron abrasive is weak in hardness, there is a problem that cannot be used when the hardness of the abrasive is high, such as ceramics. In addition, a problem may arise that the abrasive projections of iron material react with the abrasive to produce by-products.

Accordingly, the present invention provides an abrasive having excellent hardness while being able to prevent the above-described problem of the removal of the abrasive protrusion of the conventional abrasive. In addition, it does not chemically react with the abrasive, thereby providing a stable abrasive.

The abrasive according to the present invention for achieving the above object comprises a support and a plurality of polishing protrusions formed in a projection shape on one surface of the support, characterized in that the polishing protrusion is formed integrally with the support.

The abrasive of the present invention is composed of one or more ceramic mixtures selected from aluminum oxide (Al 2 O 3 ), zirconia (ZrO 2 ), tungsten carbide (WC) and silicon carbide (SiC). And the ceramic mixture is injected or extruded by heating to a predetermined temperature, wherein the sintering temperature is preferably between 700-3000 ℃.

The abrasive according to the present invention is integrally formed with a support and a plurality of abrasive projections, ceramics such as aluminum oxide (Al 2 O 3 ), zirconia (ZrO 2 ), tungsten carbide (WC) and silicon carbide (SiC) or mixtures thereof. By doing so, it is possible to fundamentally prevent the falling of the cutting particles generated during the polishing operation. Therefore, the life of the abrasive can be significantly improved.

With reference to the accompanying drawings will be described embodiments of the present invention;

1 is a side cross-sectional view of an abrasive according to an embodiment of the present invention.

The abrasive 100 of the present embodiment is to support the dropping of the diamond particles and various problems caused by using the conventional abrasive, the support 110 and the abrasive projections 120 by the ceramic mixture is not a diamond particle attached form It is characterized in that it is made integrally. In this case, the ceramic mixture is one or more ceramic mixtures selected from aluminum oxide (Al 2 O 3 ), zirconia (ZrO 2 ), tungsten carbide (WC) and silicon carbide (SiC).

As can be seen in Table 1 below, the hardness of the diamond particles is the strongest. However, in the case of diamond, since its constituent material is carbon, the thermal conductivity is high, and there is a high possibility that the particles are easily reduced to carbon during heat transfer, thereby causing particles to fall off. On the other hand, ceramics such as aluminum oxide (Al 2 O 3 ) or silicon carbide (SiC) have the hardness required for most polishing operations, and there is no fear of particles falling off, and they do not react chemically. great. Therefore, in the case of using the integrated abrasive of ceramic material as in the present embodiment, since the composition of the material to be polished by chemical reaction does not change while having excellent hardness, stable polishing can be performed.

TABLE 1

particle More Hardness Knoop Hardness Compressive Strength (PSI) Diamond 10 7,000 to 9,000 1,230,000 CBN 9.8 to 9.9 4,000 to 5,000 900,000 SiC 9.6 2,400 230,000 Al 2 O 3 9.4 1,900 500,000 Mild steel 7 186 -

On the other hand look at the manufacturing method of this embodiment abrasive 100 made of a ceramic mixture as described above are as follows.

First, molding is performed by applying a predetermined pressure to one or more ceramic powders selected from aluminum oxide (Al 2 O 3 ), zirconia (ZrO 2 ), tungsten carbide (WC) and silicon carbide (SiC). In this case, injection or extrusion molding is preferable as a method for molding the abrasive 100. A plurality of abrasive protrusions 120 are formed on one surface of the abrasive support 110 molded by the above-described method.

When the molding is completed, the mixture is heated to a temperature close to the melting point of the mixture and sintered so that ceramic powders are bonded or partially deposited to be connected to each other. At this time, the sintering temperature of the ceramic powder is preferably between 700-3000 ° C.

As described above, the abrasive 100 manufactured through the above process may have the hardness required for general polishing, and at the same time, prevent the polishing protrusion 120 from falling off.

In this case, the grinding protrusions 120 are preferably in a form in which two kinds having different heights are arbitrarily distributed. In this case, even if the long abrasive protrusion 120 is worn out, the polishing operation can be continued by the shorter abrasive protrusion 120, thereby improving the polishing efficiency.

On the other hand, Figure 2 is a view showing a hand block 200 for polishing automotive sheet metal work using the abrasive of this embodiment.

In the figure, the hand block 200 is configured as the abrasive 100 and the handle 130 connected thereto. The hand block 200 of this configuration is used by the user to grab the handle 130 and polish the putty applied to the vehicle body portion of the abrasive 100.

As described above, the characteristics, shape and manufacturing method of the abrasive according to a preferred embodiment of the present invention has been described, but this is merely exemplary. That is, in addition to the above-described automotive sheet metal work, it is possible not only to grind the rough material depending on the precision of the polishing protrusion, but also to use for removing lint of the clothing surface.

As described above, the abrasive of the present invention may be used in various fields in which conventional abrasives are used, and in any case, since the cutting particles prevent falling, the life may be increased. Therefore, the technical idea of the present invention should be construed as being determined by the matters described in the claims rather than the specific embodiments.

1 is a side cross-sectional view of an abrasive prepared according to one embodiment of the present invention.

FIG. 2 is a perspective view of an abrasive hand block for automobile sheet metal work using the abrasive of FIG. 1. FIG.

* Description of the symbols for the main parts of the drawings *

100: abrasive 110: support

120: grinding projection 130: handle

200: hand block

Claims (6)

And a support, and a plurality of abrasive protrusions formed on one surface of the support in a protrusion shape, wherein the abrasive protrusions are integrally formed with the support. The method of claim 1, The abrasive is characterized in that the abrasive projections are formed to be arbitrarily distributed as two kinds different from each other, the abrasive particles are prevented from falling off. The method according to claim 1 or 2, An abrasive for preventing abrasive grain dropping, characterized in that it comprises at least one ceramic selected from the group consisting of aluminum oxide (Al 2 O 3 ), zirconia (ZrO 2 ), tungsten carbide (WC), and silicon carbide (SiC). The method according to claim 1 or 2, An abrasive which is produced by injection or extrusion processing, wherein the abrasive particles are prevented from falling off. The method of claim 4, wherein An abrasive which is prevented from falling off of abrasive grains, characterized in that it is molded at a temperature between 700-3000 ° C. An abrasive having a support and a plurality of abrasive protrusions integrally formed on one surface of the support; And Polishing hand block for automobile sheet metal work having a handle coupled to the abrasive extends.
KR1020070077428A 2007-08-01 2007-08-01 Abrasives preventing detachment of abrasives materials KR20090013369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070077428A KR20090013369A (en) 2007-08-01 2007-08-01 Abrasives preventing detachment of abrasives materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070077428A KR20090013369A (en) 2007-08-01 2007-08-01 Abrasives preventing detachment of abrasives materials

Publications (1)

Publication Number Publication Date
KR20090013369A true KR20090013369A (en) 2009-02-05

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KR1020070077428A KR20090013369A (en) 2007-08-01 2007-08-01 Abrasives preventing detachment of abrasives materials

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KR (1) KR20090013369A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9956664B2 (en) 2012-08-02 2018-05-01 3M Innovative Properties Company Abrasive element precursor with precisely shaped features and methods of making thereof
US10710211B2 (en) 2012-08-02 2020-07-14 3M Innovative Properties Company Abrasive articles with precisely shaped features and method of making thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9956664B2 (en) 2012-08-02 2018-05-01 3M Innovative Properties Company Abrasive element precursor with precisely shaped features and methods of making thereof
US10710211B2 (en) 2012-08-02 2020-07-14 3M Innovative Properties Company Abrasive articles with precisely shaped features and method of making thereof
US11697185B2 (en) 2012-08-02 2023-07-11 3M Innovative Properties Company Abrasive articles with precisely shaped features and method of making thereof

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