JP2006334779A - Abrasive for surface processing of long work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an abrasive favorably used in a surface processing method for a long work, capable of establishing an in-line system free of the risk of bringing about an environmental problem nor dropping the mechanical property of the work. <P>SOLUTION: The abrasive is used in the surface processing method for long work in which the work is inserted penetrating in at least two flexible pipe members fed with the abrasive, pinched through the flexible pipe members with a force having the prescribed size applied from outside the flexible pipe members, and moved relative to the abrasive while the flexible pipe members are rotated relative to the work, wherein the abrasive consists of a soft abrasive material having grinding performance such as chaff, leaves of Aphananthe aspera, wood splinters, dried trunks of water rice stems, etc. or consists of a mixed grinding material formed from the mentioned soft abrasive and a hard abrasive. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an abrasive used in a method for surface processing of a long object, and particularly to an abrasive that does not cause environmental problems.

  When the surface processing of the long object described above is performed using a tool, a grinding wheel, a brush, a belt sander, etc., especially when the long object is a wire having a small cross-sectional dimension, the outer periphery thereof is made continuous. It is extremely difficult to cut uniformly. For this reason, conventionally, when removing oxide scale and rust such as wire rods, pickling, peeling, or peeling with a die (for example, refer to Patent Document 1), and when deposits are removed For this, an alkali cleaning method, an organic solvent cleaning method, or the like is used.

Japanese Patent No. 2857279

  However, the pickling method uses a large amount of water, which increases the cost of wastewater treatment and environmental measures, and makes the equipment large-scale, and when processing thin wires, the wires come into contact with each other. Since it is difficult to immerse the whole in the pickling solution uniformly, uneven processing occurs, and when the long object is iron-based, the mechanical properties are reduced depending on the acid (chemical) used. There was a problem such as. In addition, in the pickling method, since the facilities are large as described above, once the operation is stopped during the operation of the treatment, the long object is excessively immersed in the acid, and the surface thereof is significantly deteriorated. Therefore, it is difficult to inline the processing apparatus by the pickling method.

  Also, with the skinning method, in which a long object is passed between cutting tools such as composite blades or dies to scrape off foreign matter, etc., the cutting marks remain on the long object, or tension due to cutting resistance is applied to thin wires. There are problems such as cutting. In addition, the alkali cleaning method and organic solvent cleaning method are very difficult to manage in terms of protecting the working environment because the liquid used is a chemical, as in the pickling method, and the equipment is large because it is a wet method. There was a problem to do.

  The present invention has been made in view of the above circumstances, and the object thereof is a long object that can be inlined without causing environmental problems and without deteriorating the mechanical properties of the long object. An object of the present invention is to provide a grinding material suitable for use in the surface processing method.

  Here, the surface treatment abrasive for long objects in the present invention includes a soft abrasive or a mixed abrasive of the soft abrasive and the hard abrasive. That is, the soft abrasive according to the present invention is a simple plant such as rice husks, straw leaves, wood bandits, stems obtained by drying rice stalks, cuttings, fine powders, or a mixture thereof. These abrasives are suitable for so-called mild surface finishing and removal of deposits on the surface of long objects. Moreover, plant abrasives have the advantage of being environmentally friendly.

  Furthermore, the mixed abrasive according to the present invention is a soft abrasive of a plant having grindability such as trunks obtained by drying the rice husks, straw leaves, wood bandits, stems of paddy rice, ceramics such as alumina and zirconia, glass powder, It is a mixture of two or more types of hard abrasives such as non-ferrous metal powder and metal powder. These abrasives are suitable for lightly grinding or polishing the surface of long objects.

  And although the magnitude | size of the abrasive used for this invention is decided by correlation with the cross-sectional dimension of a long thing, etc., when a particle size is 0.02-2.50 mm, it is to a flexible tube member. Is easy to supply, and is excellent in removing foreign matter from the surface of a long object. That is, when the particle size is smaller than 0.02 mm, it is difficult to remove foreign matter from the surface of the long object, and when the particle size is larger than 2.50 mm, it is difficult to supply the flexible tube member. .

  Here, the flexible tube member that holds the grinding material for surface treatment of a long object of the present invention with the long object has elasticity, and can hold the abrasive with the long object. The size, shape, and material are not particularly limited as long as they are strong enough to withstand the frictional force generated when a long object is allowed to pass through and can withstand the rotational force of the electric motor.

  In addition, the magnitude | size of the force with which a flexible pipe member clamps a long thing is what the flexible pipe member which clamps a long thing can rotate with respect to a long thing via an abrasive. . Further, the grinding material is rotated by rotating the flexible tube member while moving the long object so that the peripheral speed of the flexible tube member is faster or slower than the moving speed of the long object. Is moved relative to the long object to rub the long object to surface the long object.

  In addition, the elongate object in the present invention refers to a material whose cross-sectional shape is a circle, a substantially circle, a polygon, an irregular shape, or the like, and the material thereof is not limited.

  In order to achieve the above-mentioned object, the grinding material for surface processing of a long object in the present invention is inserted into at least two flexible tube members supplied with the abrasive so as to penetrate the long object, While holding the long object through the flexible tube member with a required force from the outside of the flexible tube member and rotating the flexible tube member relative to the long object, , A grinding material used in a method of performing surface processing of the long material by moving the long material relative to the grinding material, wherein the grinding material is rice husk, straw leaves, wood bandits, paddy rice It is characterized in that it is a soft abrasive having grindability such as a trunk obtained by drying a stem of the above, or a mixed abrasive of the soft abrasive and the hard abrasive.

  According to the present invention, since a soft vegetable abrasive is used as an abrasive, an environmental problem is not caused, and the mechanical properties of the elongated object are not deteriorated. There are excellent effects such as surface finishing.

  Hereinafter, an embodiment of a long surface processing apparatus to which the invention is applied will be described in detail with reference to FIGS. As shown in FIG. 1, this surface processing apparatus includes two sets of surface processing means 41 and 42 that incorporate a grinding material and pressurize and extend a long object W extending in the vertical direction, and two sets of surface processing means. Rotating means 43 for rotating 41, 42 at low speed in the opposite direction around the long object W, and abrasive supply / discharge means for supplying / discharging the abrasive to each of the surface processing means 41, 42 (FIG. (Not shown).

  As shown in FIG. 2, each of the two sets of surface processing means 41 and 42 includes a cylindrical support member 44 rotatably supported by two bearings 45 and 45, and upper and lower surfaces in the support member 44. Two closing members 48 and 49 that are mounted on both sides and have an entrance hole 46 and an exit hole 47 for the long object W, respectively, and are mounted between the two closure members 48 and 49 to form a hollow body. And a flexible tube member 51 as a flexible container body that accommodates the powdery abrasive 50 and a pressing means 52 that presses and holds the flexible tube member 51 in two opposing directions. It is composed of.

  Further, as shown in FIG. 1, the rotating means 43 includes two bevel gears 53, 53 fitted on opposite sides of the support members 44, 44 of the two sets of surface processing means 41, 42. A reduction gear-equipped motor 54 disposed between the two sets of surface processing means 41, 42, a bevel gear 55 that is fitted to the output shaft of the reduction gear motor 54 and meshes with the bevel gears 53, 53; The two surface processing means 41 and 42 are rotated in opposite directions by driving the motor 54 with a speed reducer.

  Also, the pressing means 52 is mounted on the outer surface of the support member 44, and as shown in FIG. Attached to the support member 44 and an advancing / retracting mechanism 57 of a link mechanism structure that is mounted and axially attaches the pressing bodies 56, 56 and presses and separates the pressing bodies 56, 56 from the outer surface of the flexible tube member 51. And a cylinder 58 for operating the advance / retreat mechanism 57. The pressing bodies 56 and 56 are pressed and separated from the flexible tube member 51 via the advance / retreat mechanism 57 by the expansion and contraction operation of the cylinder 58.

  Next, a procedure for surface processing of the long object W by the apparatus configured as described above will be described. First, the long object W is made to enter through the entrance hole 46 of the closing member 48, the flexible tube member 51 and the exit hole 47 of the closing member 49 in order in the upper surface processing means 41, and then pass through them. In the same manner, the long object W is passed through the lower surface processing means 42. Next, in the upper surface processing means 41, the powdery abrasive 50 is supplied from the supply port 59 to the flexible tube member 51 by the abrasive supply / discharge means to be filled in the flexible tube member 51 and discharged. Next, the cylinder 58 of the pressing means 52 can be extended and the outer surface of the flexible tube member 51 and a part of the abrasive 50 can be pressed by the pressing main bodies 56 and 56 of the pressing means 52. To do. Similarly, the lower surface processing means 2 presses the outer surface of the flexible tube member 51 and a part of the abrasive 50.

  In this case, the pressing force on the abrasive 50 due to the extension of the cylinder 58 is set to a size corresponding to the purpose of surface processing of the long object W within a range in which the long object W can move during towing. Under this state, the long object W is pulled downward by a conventional pulling means (not shown), and the two sets of surface processing means 41 and 42 are rotated in opposite directions by driving the motor 54 with a speed reducer. . Thereby, the surface of the rotating long object W is processed by the abrasive 50. The impurities scraped from the long object W are discharged from the discharge port 60 together with the abrasive 50. In this way, it is possible to appropriately surface-process a long object without causing environmental problems and without reducing the mechanical properties of the long object.

  In addition, frictional heat may be generated due to the movement of the long object W under pressure to the abrasive 50. In this case, a cooling gas such as compressed air or carbon dioxide gas is supplied from the supply port 59 as necessary. Supply.

It is a front view which shows the outer surface of the Example of this invention. It is a partial cross section front view which shows the principal part of the Example of this invention.

Explanation of symbols

41, 42 Surface processing means 43 Rotating means 45, 45 Bearing 44 Support member 46 Inlet hole 47 Outlet hole 48, 49 Closing member 51 Flexible tube member 52 Pressing means 53 Bevel gear 54 Electric motor 56, 56 Pressing body 57 Advance / retract mechanism W Long object

Claims (2)

Insert the long object into at least two flexible tube members supplied with abrasives so as to penetrate the long object with the required magnitude of force from the outside of the flexible tube member. The long object is clamped via a pipe member, and the long object is moved relative to the abrasive while the flexible tube member is rotated relative to the long object. A grinding material used in a method of performing surface processing of
The abrasive is a soft abrasive having grindability such as rice husks, straw leaves, wood bandits, trunks of dried rice stalks, or the like, or a mixed abrasive of the soft abrasive and the hard abrasive A grinding material for surface processing of long materials. The abrasive for surface processing of a long object according to claim 1, wherein the abrasive has a particle size of 0.02 to 2.50 mm.