JP2001287165A - Barrel polishing media, manufacturing method therefor, and barrel polishing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that defoaming agent is sometimes added for polishing work because use of a media consisting of a resin-based material may cause foaming by reaction with a resin component during barrel polishing, while its effect cannot last. SOLUTION: A small amount of defoaming agent (0.1 to 5 mass %) is added to mixture of the resin-based material (30 to 80 mass %) and an abrasive material (70 to 20 mass %) for hot forming into a prescribed shape to be used as barrel polishing media.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel polishing medium for suppressing foaming during barrel polishing, a method for manufacturing the same, and a barrel polishing method.

[0002]

2. Description of the Related Art Conventionally, various types of barrel polishing using a medium made of a resin base material have been performed.

It has been known that a compound is added at the time of barrel polishing to improve the gloss of a work, prevent rust, soften water or defoam, and the like. In some cases, an operator added an antifoaming agent during barrel polishing.

Further, there has been proposed a polishing medium in which a fatty acid, silicone oil or metal soap is added to a resin medium for barrel polishing (JP-B-49-5715, JP-A-60-60).
-33375, JP-A-11-226859).

[0005]

Conventionally, when a medium made of a resin base material is used, bubbles are generated inside by a polishing action and a resin component of the medium during barrel polishing, and these bubbles impair the working environment. There is. For example, in the case of a rotating barrel, when the lid is opened after polishing is completed, bubbles rise and it is difficult to check the inside, and it takes time to discharge the material.

Further, in the case of a planetary revolving barrel, since the pressure inside the barrel becomes high, when the lid is opened, there is a risk that bubbles may blow out and contaminate the surroundings. Further, even when a vibrating barrel is used, since the upper part of the barrel tank is open, bubbles may be scattered around the tank, and the periphery of the tank may be soiled. Further, foaming inside the barrel tank acts as a buffering action to prevent breakage of easily breakable work, but if foaming is too strong, there is a problem that action is weakened, polishing power is reduced, or polishing flow is deteriorated. .

[0007] Further, passing the foamed barrel waste liquid through a wastewater treatment facility is not preferable because it imposes a great burden on the treatment facility.

Next, a compound may be added at the time of barrel polishing. However, the defoaming effect of the compound is not effective when polishing is performed for a long period of time only (for example, about 30 minutes with a planetary rotating barrel). While the foam increases with the abrasive action and media wear,
There is a problem that the defoaming action of the compound is deteriorated.

Next, if an antifoaming agent is added to the polishing tank by an operator, an antifoaming effect can be expected, but there is a problem that not only requires additional labor time but also requires careful attention. Those with lids, such as rotating barrels or planetary barrels, are often difficult to add during barrel polishing because the lid must be opened.

[0010] The above-mentioned known inventions are all aimed at improving the gloss of the work, and do not take into account the balance of the defoaming action, the amount of abrasion, the amount of abrasion, and the like. Could not.

[0011]

The present invention has solved the above-mentioned conventional problems by adding a small amount of a foaming inhibitor to a mixture of a resin base material and an abrasive.

[0012] That is, the invention of the barrel polishing media is characterized in that 0.1 to 5% by mass of a defoaming agent for suppressing foaming during polishing is contained with respect to 100% by mass of a mixture of a resin base material and an abrasive. A barrel polishing medium characterized by a resin base material 30
To 80% by mass, and 70 to 20% by mass of the abrasive material.

[0013] Further, the invention of the manufacturing method is such that a predetermined amount of an abrasive and an antifoaming agent are added to a thermosetting resin base material, mixed with stirring, formed into a predetermined shape and size, and then heated. This is a method for producing a barrel polishing medium characterized by curing. Further, a predetermined amount of abrasive material on a thermoplastic resin base material,
An antifoaming agent is added and mixed, and after heating and melting the mixture, a method for producing barrel polishing media characterized by being molded into a predetermined shape and size.
The addition and mixing of the abrasive and the antifoaming agent are sequentially or simultaneously added.

Next, the invention of the polishing method is a method of barrel polishing using the medium manufactured by the present invention by an ordinary method.

In the above invention, the resin substrate may be a thermosetting resin such as a phenol resin, an unsaturated polyester resin, a polyurethane resin, an epoxy resin, or a urea resin, and a thermoplastic resin such as a polyethylene resin, a polypropylene resin, or a polyamide resin. Can be used.

As the abrasive, any of the conventionally known abrasives such as alumina, silica, silicon carbide, iron oxide, boron oxide, zircon, chromium oxide or diamond or molded products made of these materials can be used. be able to.

Examples of antifoaming agents include polyether, oleic acid, stearic acid, glycerin monolaurate, tributyl phosphate, calcium stearate, aluminum stearate, polyalkylene glycol derivatives, dimethyl silicone oil, organically modified silicone oil, fluorosilicone A simple substance such as oil, silica silicon compound, mineral oil or hydrophobic silica or a combination thereof can be used.

In the above invention, the amount of the antifoaming agent is 5% by mass.
If the ratio exceeds 0.1%, the abrasion of the medium becomes severe, and if it is less than 0.1% by mass, the defoaming effect becomes extremely small. This depends on the quality of the defoamer and abrasive used.
Considering the balance between the amount of wear, the amount of polishing and the defoaming effect,
In many cases, the amount of the defoamer is preferably 2 to 3% by mass.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is intended to reduce the amount of foaming during barrel polishing by using a mixture of a resin base material and an abrasive material in an amount of 0.1.
-5% by mass of an antifoaming agent.

Since the defoaming agent in the above is contained in a medium in which the resin base material and the abrasive are integrally formed, the defoaming agent is uniformly dispersed without any deviation, and at the same time acts excessively. There is no danger.

Since the present invention is used for barrel polishing using the medium formed as described above in a conventional manner, it can be carried out in a conventional manner without any special operation or work change. However, the polishing time can be slightly increased or other means can be used for the reduction in polishing ability without any trouble.

[0022]

Embodiment 1 The present invention will be described with reference to an embodiment. As a base material of the media, 38% by mass of an unsaturated polyester resin (thermosetting resin) and 62% by mass of zircon as an abrasive were mixed.
As a defoaming agent, SN deformer (manufactured by San Nopco Co., Ltd.) was added in the range of 0.1 to 7% by mass and stirred. Then, methyl ethyl ketone peroxide (curing agent) is added to the medium, and the mixture is further stirred, poured into a silicon mold to which the medium shape has been transferred, and finally charged into a heating furnace at about 100 ° C. for 7 to 8 minutes. By holding, the medium of the present invention was obtained. This media is 15mm high x 15m bottom
m conical shape. Using this medium, a barrel polishing test was performed under the following conditions.

(1) HS-2000 (Tipton Co., Ltd., 2 liter / tank) Number of revolutions: 200 rpm (2) Media: With and without defoaming agent. 1 liter / bath input (3) Amount of water: 0.5 liter (4) Compound: HBC, 20 g / 1 liter water (Chipton Co., Ltd., compound for gloss) added and not added (5) Polishing time: 30 minutes Barrel polishing was performed under the above conditions, waste liquid after polishing was collected, the liquid was transferred to a 1-liter container, and the height of bubbles was measured. Table 1 shows the results. . The height of the foam was measured by repeating three polishing tests, and the average value at that time was used.

[0024]

[Table 1]

From the above results, as the defoamer is added,
In each case, it can be seen that the height of the bubbles is low. That is, if such an antifoaming agent is added to the polishing media in barrel polishing, the amount of foam generated by polishing can be reduced.

Next, the relationship between the abrasion amount of the media and the abrasion amount of the work by a polishing test was tested, and Table 2 was obtained. The test was performed with the compound added, and the tested workpiece was a cylindrical stainless steel of φ28 mm × 8 mm.

[0027]

[Table 2]

From these results, it can be seen that as the addition amount of the antifoaming agent increases, the abrasion amount of the media also increases, while the polishing amount decreases from a certain point. This is presumably because the worn resin base material became a buffer material in the barrel tank and deteriorated the rubbing action on the work. According to the above results, the addition amount of the antifoaming agent is preferably 2-3% by mass.

[0029]

Embodiment 2 An embodiment of the manufacturing method of the present invention will be described. 60% by mass of alumina is added to 40% by mass of unsaturated polyester resin, and the mixture is stirred and mixed. Then, 3% by mass of stearic acid is added with respect to 100% by mass of the mixture, and a stabilizing agent is added and mixed. A medium of the present invention can be obtained by casting it in a silicon mold and heating it in a heating furnace at about 100 ° C. for about 7 to 8 minutes.

For the casting of the medium, a medium capable of forming a medium having a shape corresponding to the use of the medium is used.

[0031]

Embodiment 3 Another embodiment of the present invention will be described.
35% by mass of polyethylene resin powder and 65% of silicon carbide powder
% By weight, and then mixed, and then 100% by weight of the mixture.
, 3% by mass of a silica silicon compound was added thereto, and the mixture was stirred and mixed, and the mixture was heated and melted (180%).
℃), then molded in a molding machine and cooled and cured (room temperature standing) to obtain the media of the present invention.

[0032]

According to the barrel polishing medium and the barrel polishing method of the present invention, the bubbles generated in the barrel tank are suppressed, and the blowing of bubbles from the barrel tank is suppressed, so that there is no possibility that the working environment is deteriorated. There is. In addition, since a new antifoaming agent comes out from the inside due to abrasion of the media, the antifoaming effect is maintained even when used for a long time or repeatedly. In addition, there is no need to add a defoaming agent later, and there is little bubbling in the waste liquid treatment process after barrel polishing. There are various effects.

According to the production method of the present invention, there is an effect that a predetermined amount of an antifoaming agent can be evenly distributed in a medium.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B24D 17/00 B24D 17/00 F

Claims (6)

[Claims] 1. 100% by mass of a mixture of a resin base material and an abrasive material
A barrel polishing medium characterized in that an antifoaming agent for suppressing foaming during polishing is contained in an amount of 0.1 to 5% by mass. 2. A resin base material of 30 to 80% by mass and an abrasive material 70
The barrel polishing medium according to claim 1, wherein the content is set to 20 to 20% by mass. 3. A predetermined amount of abrasive material on a thermosetting resin base material,
A method for producing barrel polishing media, comprising adding an antifoaming agent, stirring and mixing, forming the mixture into a predetermined shape and size, and then heating and curing. 4. A predetermined amount of abrasive material on a thermoplastic resin base material,
A method for producing barrel polishing media, comprising adding and mixing an antifoaming agent, heating and melting the mixture, and then molding the mixture into a predetermined shape and size. 5. The method for producing a barrel polishing medium according to claim 3, wherein the addition and mixing of the resin base material, the abrasive and the defoaming agent are sequentially or simultaneously added. . 6. A barrel polishing method using the barrel polishing medium according to claim 1 in a conventional manner.