JPH01222865A - Lapping material and lapping method - Google Patents

Abstract

PURPOSE:To contrive to constitute highly efficient lapping material with no clogging accompanied by letting the content of non-organic long staples selected out of those fibers such as glass, aluminum, boron, silicone carbide and the like by 45-85wt.% so as to let the staples be hardened by thermoplastic resin, and thereby arranging the non-organic long staples in order in one direction. CONSTITUTION:Optimum non-organic long staples 3 shall be selected out of those such as glass fibers, aluminum fibers, boron fibers, silicone carbide fibers and the like depending on material to be polished. These non-organic long staples 3 are impregnated with thermoplastic resin so as to let the content of the non-organic long staples be 45-85wt.% for letting the staples be hardened in such a way as to be arranged in order in one direction so that they are constituted to be a lapping material 1. When the lapping material 1 is stuck in contact with material 2 to be polished with the angle of 70 deg.-110 deg. maintained, the clogging of the material 2 to be polished is prevented, highly efficient lapping can thereby be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lapping material or a sanding material and a lapping method.

[Prior Art] Conventionally, as a method for polishing metal materials such as molds, a rod-like object made by cutting a so-called grinding stone material such as carborundum into strips or a cylindrical pipe-like object has been used.

However, if a metal mold, etc. is polished with a wrapping material made of a material harder than such a metal material, the mold, etc. will naturally be scratched, so the final process of finishing the mold, etc. should not be done in this way. Working with materials harder than metal required considerable skill. In addition, the metal powder scraped off from the mold during the polishing process gets between the polished surfaces of the lapping material, so when you polish the mold with this, metals of the same hardness rub against each other and cause damage to the mold. It had the disadvantage of causing

[2!1lii1 The object of the present invention is to provide a lapping material and a lapping method that do not cause clogging during polishing.

[Means for Solving the Problems] The inventors of the present invention have solved the above problems and succeeded in manufacturing a material that is optimal as a finishing material (wrapping material) for the final process of molds and the like.

That is, the structure of the present invention consists of inorganic long fibers selected from the group consisting of glass fibers, alumina fibers, boron fibers, and silicon carbide fibers and a thermosetting resin, and the content of the inorganic long fibers is 45 to 85 vt. %, and the lapping material is cured in a state where it is aligned in one direction, and the lapping material is wrapped so that the inorganic long fibers of this lapping material form an angle in the range of 70 to 110'' to the surface to be polished. This is a lapping method in which a material is brought into contact with the surface to be polished.

In the wrapping material of the present invention, it is presumed that the inorganic long fibers as its components act as an abrasive, and the thermosetting resin acts as a binder.

The reason why lapping can be done without clogging has not yet been established, but inorganic long fibers do not have ductility. The resin, which is a binder, wears out and the cutting edge is always kept exposed.Also, the thermosetting resin, which is a binder, prevents metal powder generated by polishing from becoming embedded between the fibers. It is estimated that

Next, to explain each component constituting the wrapping material of the present invention, firstly, if the content of inorganic long fibers is less than 45vt%, the polishing efficiency will be poor, and if it exceeds 85vt%, the fibers will be packed close to each other when arranged. If the amount is exceeded, impregnation of the resin into the fibers will be poor. From the viewpoint of polishing efficiency of molds, etc., it is better to have a lot of gold and white fibers, and the optimum range is 60 ~
It is 80 sit%.

The fibers must be aligned in such a way that the tips of the fibers protrude from the metal surface to be wrapped. In other words, it is important that preferably 75% or more of the fibers are aligned within 45 degrees in the direction of the rod used for wrapping. FRP materials are not suitable as wrapping materials.

In other words, in this case, the fibers arranged parallel to the polishing surface not only have no effect on polishing the metal, but also the scraped metal particles get stuck between the warp and weft, and the metal particles with the same hardness can result in damage to the metal you are trying to polish.

As for the material of the inorganic long fibers, glass fiber is most suitable for polishing materials such as aluminum, copper, and brass, and alumina fiber is suitable for polishing iron and the like. However, depending on the metal to be polished, these may be mixed. When polishing, it is preferable to use fibers that are harder than the object to be polished and are brittle.

The thickness of the single fiber is 3 to 30μ, preferably halo to 2
5μs is <. Fiber bundle amount fl 275-3000Tax
However, from the viewpoint of productivity, a material of around 2500 Tex is preferable from the viewpoint of production since there is no impregnation problem.

It is preferable that the distribution state of the fibers within the wrapping material is uniform when viewed with the naked eye.

Thermosetting resins that serve as binders to solidify fibers and form the matrix of wrapping materials include epoxy resins, unsaturated polyester resins, vinyl ester resins, bismaleimide resins, and phenolic resins.
An epoxy resin that can produce a wrapping material that does not contain voids (bubbles) despite containing H-containing inorganic long fibers is optimal. If there are voids, metal particles generated as a result of polishing will enter the voids remaining in the FRP material.
In addition to causing clogging, the polished surface, which has the same hardness as the metal particles, is damaged during polishing.

Next, to explain the manufacturing method of the lapping material of the present invention, inorganic long fibers that are harder than the metal material to be polished are used, impregnated with a thermosetting resin, and heated and hardened so that the fibers are oriented in one direction. Aligned FRPO
Make a plate, rod or tube.

To do this, first, inorganic long fibers are aligned in one direction, impregnated with a thermosetting resin, and then the resin-impregnated material is pulled out through a heated mold and cured. Shaped into a rod or tube by pultrusion. In this way, reinforced plastic with fibers aligned in one direction [hereinafter referred to as FRP (FIBERRE)
This is called INPORCED PLASTIC8) and is cut into appropriate dimensions to be used as a wrapping material.

Alternatively, the inorganic long fibers impregnated with a thermosetting resin may be wound around a cylindrical mold, so-called a mandrel, and then cut after curing (so-called filament winding molding method).

In addition, inorganic long fibers impregnated with resin are wound around a cylindrical mold, cut in the axial direction of the cylinder to form a sheet, cut into appropriate dimensions, and placed in a heated mold. It is also possible to fill the FRP, press it and heat cure it to produce FRP in which the fibers are aligned in only one direction, and then cut this into an optimal size as a wrapping material.

As shown in the drawings, the method of using the lapping material of the present invention basically requires that the direction of the aligned fibers 3 of the lapping material 1 be approximately perpendicular to the surface of the material 2 to be polished. Even if there is some deviation from the vertical, the desired effect can be achieved within the range of ±20°, that is, within the range of 70 to 11 G''.

The wrapping material of this invention is suitable for metal rusting,
Mold polishing, car rust removal, filing, sanding,
Finishing ski edges, repairing screw surfaces, deburring, repairing cutlery, and golf.

Examples include love head repair.

Hereinafter, the present invention will be specifically explained with reference to Examples.

[Example] In a tank containing a resin composition consisting of 100 parts of epoxy resin (AER331, Asahi Kasei Kogyo), 75 parts of tetrahydromethyl phthalic anhydride (HN 2200, Hitachi Chemical), and 1 part of imidazole (2O2MZ-CN, Shikoku Kasei). , 2310Tex
Glass fiber roving (E R231OF16
4. Impregnated with resin through Nippon Electric Glass) 4, 24 of these were aligned and wound around a cylinder with a diameter of im at an angle of 85 degrees to a width of 1 m, and this was cut in the axial direction to produce a sheet.

The sheets were stacked with the fibers aligned in the same direction, filled into a mold heated to 120° C., pressed under a pressure of 50 kg and 7 am 2 , and held for 1 hour to harden.

A wrapping material was prepared by cutting square rods in the fiber direction from the FRP board thus prepared.

When we polished copper plates and aluminum plates using this lapping material so that the fiber alignment direction was almost perpendicular to the surface of the Giken core material, the polishing effect was excellent, and at the same time,
There were no scratches or the like on the metal polished surface, and an extremely high quality polished surface was obtained.

[Effects of the Invention] As explained above, by using the lapping material of the present invention, highly efficient polishing and sharpening can be performed, and at the same time, an extremely high quality polished surface can be obtained.

[Brief explanation of the drawing]

The drawings are explanatory diagrams of examples of use of the wrapping material of the present invention. l... Lapping material, 2... Material to be polished, 3...
Inorganic long fiber. Patent applicant: Asahi Kasei Industries, Ltd. (and 2 others) Agent: Patent attorney Hidetake Komatsu

Claims (2)

[Claims] (1) Consists of inorganic long fibers selected from the group consisting of glass fibers, alumina fibers, boron fibers, and silicon carbide fibers and a thermosetting resin, and the content of the inorganic long fibers is 45 to 45%.
A wrapping material having a content of 85 wt% and being cured in a state where the material is aligned in one direction. (2) A lapping method characterized in that the lapping material is brought into contact with the surface to be polished such that the inorganic long fibers of the lapping material according to claim 1 form an angle in the range of 70 to 110 degrees with respect to the surface to be polished. .