JP2007136594A - Brush bristle material for polishing brush roll, and the brush roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a favorable polishing result and besides prevent breakage of brush bristle materials, even under considerably high temperature when polishing a taper roll, a backup roll, a strip and so on, by a brush roll whose brush bristle material is formed of polyamide resin fiber. <P>SOLUTION: The brush bristle material made of polyamide resin fiber of the brush roll applied to polishing a heat-treated rolling roll, polishing a backup roll of the head treated rolling roll, and polishing a strip or the like is formed of a resin fiber, composed mainly of polynonane methylene-terephthalamide resin, and abrasive grains are contained in the resin fiber. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a polishing method for polishing a brush roll used for polishing a temper rolling (skin pass) roll or a backup roll of a temper rolling roll, a plate such as a thick plate or a thin plate of a steel plate production line (hereinafter collectively referred to as a strip). The present invention relates to a brush bristle material composed of resin fibers whose main component is a polyamide resin for a brush roll used for (grinding and polishing) and the brush roll.

  The polishing brush roll is rotated at a high speed in a state of being pressed (reduced) against an object to be polished (object to be polished) to polish the object to be polished. When the object to be polished is a strip, the object to be polished is polished while spraying a cooling liquid. In the polishing, the bristle material of the brush roll is heated by heat generated by friction with the object to be polished. When the object to be polished is a temper rolling roll or a backup roll of a temper rolling roll, a coolant cannot be used, and thus high frictional heat is generated.

  Conventionally, nylon 6 or nylon 66 is usually used for resin fibers constituting the brush bristle material. In the brush bristle material made of these resin fibers, even if an attempt is made to polish the temper rolling roll or the backup roll of the temper rolling roll, the brush bristle material is fused and the object is not achieved.

  As an improvement on this point, there is an invention of Japanese Patent Application Laid-Open No. 2003-166122. In this invention, the resin fibers mainly composed of polyhexamethylene terephthalamide resin are filled in the brush bristle material, and the resin fibers of the brush bristle material are contained in the abrasive particles, so that the polishing is excellent even at relatively high temperatures. Achieve results. However, the brush bristle material is often broken in the long-time polishing at a high temperature. Specifically, this point is as follows.

  When the object to be polished is polished with a brush roll, the amount of polishing is determined by the degree of reduction of the brush roll as long as the rotation of the brush roll does not change. In operation, the brush roll is initially brought into contact with the outer surface of the object to be polished (this initial contact is referred to as reduction 0) and then pressed (down) the object to be polished. The amount of reduction is expressed in mm, and it is standard to operate with a reduction of 2 to 3 mm (in the case of a strip). However, the surface to be polished has irregularities, and in order to cope with this, it is necessary to reduce the amount of reduction to 5 to 6 mm. In the case of strips, most of those skilled in the art actually operate the brush roll under excessive pressure (about 5 mm) to compensate for insufficient polishing. The above-mentioned prior disclosure cannot cope with such an excessive pressure, and the brush bristle material is not broken even under a standard pressure.

  The problem to be solved is a brush roll in which a brush bristle material is formed of polyamide resin fibers, and when polishing a temper roll, a backup roll, a strip, etc., a good polishing result can be obtained even under high temperature, and It is intended to eliminate the bending of the brush bristle material, or to considerably reduce the folding of the brush bristle material as described in JP-A-2003-166122.

  In order to solve the above problems, the present invention provides a brush bristle or brush bristle for use in polishing a temper rolling roll, polishing a backup roll of a temper rolling roll, polishing a strip, and the like. The resin fiber is made of amide resin as a main component, and the resin fiber is modified to include abrasive particles.

  The brush bristle material may be composed of a monofilament yarn (single filament) or a plurality of aggregates (aligned in a bundle). In any of them, the brush bristle material may include a cover ring formed by spirally winding fibers on the peripheral surface of the brush bristle material main body or knitting in a braid shape and setting the resin. It may be a thing. The brush bristle material main body is a brush bristle material component excluding the cover ring. When the brush bristle material main body is composed of a single striatum, the diameter of the striatum is usually about 0.3 to 3.0 mm, and when composed of an aggregate of a plurality of striatums, The diameter of the body is usually about 0.3 to 2.0 mm. In order to form a brush bristle material covering, a conventional method may be followed. The fiber forming the cover ring may be the same as the cover ring fiber in the conventional brush bristle material.

  The polynonanemethylene terephthalamide resin used in the present invention is a polyamide resin having a structure represented by the following formula.

  This polynonanemethylene terephthalamide resin has nonamethylenediamine and terephthalic acid as a basic skeleton, and has a high melting point. In the brush roll in which the brush bristle material is formed using this resin, the brush bristle material is not fused even if the object to be polished is polished under the condition that high frictional heat is generated. Further, the glass transition point is high, and even at high temperatures, for example, 60 to 80 ° C., the resin fibers of the brush bristle material are not soft and the polishing ability is hardly lowered. Moreover, breakage of the brush bristle material was reduced to about one-tenth or less of that of the prior disclosure in the polishing at the same temperature and the same time as in the invention of JP-A-2003-166122.

  In the present invention, the resin component constituting the resin fiber may be only the polynonanemethylene terephthalamide resin, or may be used in combination with other polyamide resins such as nylon 6 and nylon 66. It is preferable that the usage-amount of another polyamide resin is 30 weight% or less in a resin component.

  In order to form the resin fiber, for example, abrasive particles may be mixed in the resin component and spun by a normal melt extrusion method. The particle size of the abrasive particles may be approximately the same as the particle size of the abrasive particles of the brush bristle material formed of the conventional polyamide resin containing abrasive particles, and the mixing amount may be approximately the same as the conventional mixing amount. The spun fiber is drawn as necessary.

  As described above, the present invention can obtain a good polishing result even at high temperature in polishing a temper roll, a backup roll, a strip, etc. with a brush roll in which a brush bristle material is formed of polyamide resin fibers, and the brush. The breakage of the hair material can also be considerably reduced as compared with the prior disclosure.

  Embodiments of the present invention will be described together with examples with reference to the drawings.

  A brush bristle material for a brush roll according to an embodiment of the present invention is shown in FIG. 1, and other examples are shown in FIGS. In these drawings, the brush bristle material is underlined and denoted by reference numeral 1. This indicates that reference numeral 1 is generally applied to the brush bristle material. The brush bristle material 1 is formed with the specifications described in the section of means for solving the problems.

  The brush bristle material 1 shown in FIG. 1 is a single body with no cover ring. The brush bristle material 1 shown in FIGS. 2 to 6 includes a brush bristle main body 10 and a cover ring 11 formed on the brush bristle main body 10.

  The brush bristle material 1 shown in FIG. 2 to FIG. 4 is obtained by forming a cover ring 11 by spirally winding a multifilament yarn 110 around a brush bristle material main body 10 and setting a resin. The brush bristle material 1 shown in FIGS. 5 and 6 is obtained by forming a cover ring 11 by knitting a multifilament yarn 110 in a braided shape around the brush bristle material main body 10 and setting a resin.

  2 and 5 show that the brush bristle material main body 10 is a single striate body, and in FIGS. 3, 4 and 6, the brush hair material main body 10 has a plurality of striate bodies. It is due to the aggregate of. In the structure shown in FIG. 4, a cover ring 11 is formed on each of the plurality of brush bristle materials 10, and a cover ring 11 is further formed on an assembly of a plurality of filaments with the cover ring 11.

  FIG. 7 shows a brush disk 2a as an example of the brushing member 2 for the brush roll according to one aspect of the present invention. The brush disk 2a has the brush bristle material 1 at the periphery of the disk (see FIG. 7). The brush bristle material 1 is bent into a U-shape through a hole 21 (see FIG. 8 which is a partially enlarged view of FIG. 7) formed in the peripheral edge of the disk 2a, and the bent base portion is tightened with a metal wire 22 or the like. (See FIG. 8). A large number of discs 2 a are fitted on the shaft 30 (FIG. 10) of the polishing brush roll, compressed and restrained in the length direction of the shaft 30, and drivingly coupled to the shaft 30, and the polishing brush roll 3 (FIG. 10). ).

  In addition to the brushing member described above, a brushing member 4 of the type referred to as a channel type by those skilled in the art, which is formed by flocking and fixing the brush bristle material 1 to a groove member 41 having a C-shaped cross section according to a conventional method (FIG. 9 ) This type of brushing member 4 is wound around the peripheral surface of the brush shaft 30 in a spiral shape and fixed by an appropriate method to form a polishing brush roll 3.

  The reference numerals of the brushing members 2, 4 and the brush roll 3 are also expressed in an underlined manner, similarly to the reference numerals of the brush bristle material 1.

  Next, some examples of use of the polishing brush roll according to the present invention will be described with reference to FIGS. FIG. 11 shows an example of polishing (dry polishing) a temper rolling roll (temper mill), FIG. 12 shows an example of polishing a backup roll of a temper rolling roll (dry polishing), and FIG. 13 shows an example of dry polishing a strip (iron plate). FIG. 14 shows an example of wet-polishing a strip (iron plate). 11 to 14, B is a polishing brush roll, R is a temper rolling roll, BU is a backup roll, S is a strip, and N is a nozzle or spray that injects cooling water onto the brushing portion of the strip S by the polishing brush roll B. Indicates.

  In the brush bristle material in the brush roll B for polishing the temper rolling roll R and the backup roll BU, the size of the abrasive particles mixed into the resin fiber may be 1000 # or 500 #. In the brush bristle material in the brush roll B for polishing the iron plate, the size of the abrasive particles mixed in the resin fiber may be 80 #.

  11 and 12, C is a dust collector of the polishing brush roll B. The dust collector C includes a cover C1 that covers the left and right ends of the polishing brush roll B and a region of almost the entire circumferential surface, and a suction pipe C2 that is connected to the cover C1. The front end of the cover C1 extends to the vicinity of the temper rolling roll R and the backup roll BU. The dust collector C sucks and removes polishing dust from the polishing brush roll B, and also functions to cool the polishing brush roll B by an air flow generated by suction.

It is a perspective view which shows one Example of this invention brush bristle material. It is a perspective view which shows the other example of this invention brush bristle material. It is a perspective view of the Example from which this invention bristle material differs. It is a perspective view which shows another example of this invention bristle material. It is a perspective view which shows another example of this invention bristle material. It is a perspective view which shows another example different from the above of this invention brush bristle material. It is a perspective view which shows an example of the brushing member used by this invention. FIG. 8 is a partially enlarged plan view of the brushing member shown in FIG. 7. It is a perspective view which shows the other example of the brushing member used by this invention. It is a front view which shows the outline | summary of an example of this invention polishing brush roll. It is a figure which shows one usage example of this invention polishing brush roll. It is a figure which shows the other usage example of this invention polishing brush roll. It is a figure which shows another example of use of this invention brush roll. It is a figure which shows another example of use of this invention brush roll.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Brush bristle material 3 Brush roll 10 Brush bristle material main body 11 Covering

Claims (8)

A bristle material of a polishing brush roll for polishing a steel sheet or a rolling roll for manufacturing a steel sheet or a backup roll of a steel roll, and formed of resin fibers mainly composed of polynonamethylene terephthalamide resin. A brush bristle material for an abrasive brush roll, wherein the fibers contain abrasive particles. The polishing brush roll according to claim 1, wherein the brush bristle material comprises a brush bristle material main body and a cover ring in which fibers are spirally wound around the main body peripheral surface or braided in a braid form and set with resin. The brush bristle material of an abrasive brush roll according to claim 2, wherein the main body of the brush bristle material is a single filament. The brush bristle material of an abrasive brush roll according to claim 2, wherein the brush bristle material is mainly composed of an assembly of a plurality of filaments. A polishing brush roll for polishing a steel sheet or a rolling roll for manufacturing a steel sheet or a backup roll of a rolling roll, which is formed of resin fibers mainly composed of polynonamethylene terephthalamide resin, and the resin fibers are polished. A polishing brush roll comprising a brush bristle material containing material particles. The abrasive brush roll according to claim 5, wherein the brush bristle material comprises a brush bristle material main body and a cover ring in which fibers are spirally wound around the main body peripheral surface or braided into a braid and resin set. The polishing brush roll according to claim 5, wherein the main body of the brush bristle material is a single filament. The abrasive brush roll according to claim 5, wherein the main body of the brush bristle material is an aggregate of a plurality of filaments.

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