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Method of manufacturing resin bonding grinding wheel

A technology of resin bonding and manufacturing method, which is applied in the direction of manufacturing tools, abrasives, metal processing equipment, etc., to achieve the effects of reducing the risk of cracks, small deviation of pores, and improving mechanical strength

Inactive Publication Date: 2007-05-09
KURE GRINDING WHEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of using an ester-curable phenolic resin, since the curing is basically completed at a temperature from room temperature to 60°C, even if the heating process at 120-170°C is added, no great effect will be obtained.

Method used

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  • Method of manufacturing resin bonding grinding wheel
  • Method of manufacturing resin bonding grinding wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] 1. Manufacture of grinding wheel and measurement of physical properties

[0094] The physical properties of the resin-bonded grinding wheel produced by the first embodiment of the production method of the present invention (Example 1) and the method disclosed in WO 01 / 85394 (Comparative Example 1) were measured in the following procedures. The composition of the grinding wheel was adjusted so that the abrasive particle volume ratio = 15%, the binder volume ratio = 18%, and the pore volume ratio = 67%.

[0095] 1-1. Manufacture of grinding wheel (Example 1)

[0096] 1-1-1. Raw materials

[0097] Abrasive grain GC#2000 944g

[0098] Binder: Resole phenolic resin 420g

[0099] (manufactured by Asahi Organic Material Industry Co., Ltd., product number: HPR 830)

[0100] Curing agent: γ-butyrolactone 104g

[0101] Foaming agent (Dashi Chemical, product number: Uniform AZ 90) 43g

[0102] water 210g

[0103] 1-1-2. Grinding wheel manufacturing steps

[0104] Put binde...

Embodiment 2 and 3

[0177] 1. Manufacture of grinding wheel and measurement of physical properties

[0178] According to the second embodiment (Example 2) of the manufacturing method of the present invention and the resin bonded grinding wheel manufactured by the first embodiment (Example 3 (comparison with Example 2)) of the manufacturing method of the present invention, it is determined by the following steps Various properties. The composition of the grinding wheel was adjusted so that the abrasive grain volume ratio = 22%, the binder volume ratio = 24%, and the pore volume ratio = 54%.

[0179] 1-1. Manufacture of grinding wheel (Example 2)

[0180] 1-1-1. Raw materials

[0181] Abrasive GC#2000 1118g

[0182] Phenolic resin: resole type phenolic resin (non-volatile content 45%) 420g

[0183] (manufactured by Asahi Organic Material Industry Co., Ltd., product name: HPR830)

[0184] Curing accelerator: γ-butyrolactone 104g

[0185] Reinforcing agent: thermosetting resole phenolic resin 4...

Embodiment 2

[0215] In Example 2, compared with Example 3, the flexural strength was 70% or more higher, and the flexural modulus was 3 times or more higher. The high flexural modulus in Example 2 is estimated to be due to the higher uniformity of pores than in Example 3.

[0216] Comparing the structure of the grinding wheel, it can be seen that the pore size of Example 2 shown in Figure 3 is 10-100 μm, and the pores are evenly distributed, while the example 3 shown in Figure 4 has uneven distribution of the pores of the grinding wheel. In addition, it was observed that the abrasive grains were firmly held by the binder in Example 2, whereas the abrasive grains in Example 3 were free. This is judged to be because in Example 2, the strength of the resin was increased due to the action of the reinforcing agent, thereby firmly holding the abrasive grains. On the other hand, in Example 3, it was judged that the strength of the binder was weak, the holding force of the abrasive grains was ins...

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Abstract

Method of manufacturing resin bonding grinding wheel with stomatal in a structure utilizing resin adhesive to fixing wear particles by which resin bonding grinding wheel with uniform stomatal size and distributing can be manufactured as well as granding wheel having improved mechanical strength and good grinding performance. The method comprises: uniformly mixing the wear particles, phenolic resin adhesive, water and foaming agent together; adding solidifying promoter and uniformly mixing the mixer; casting the obtained fluidity mixer into a prescribed mold, solidifying the mixer by the effect of the solidifying promoter; thereafter removing the water contained in the solidified body by a drying process, air bubbles are generated in the fluidity mixer by utilizing the chemical reaction of the foaming agent, the bubbles forms the stomatal of the grinding wheel structure after solidification.

Description

technical field [0001] The present invention relates to a method of manufacturing a resin bonded grinding wheel. Background technique [0002] Grinding and grinding wheels are roughly classified into vitrified bonded grinding wheels, resin bonded grinding wheels, metal bonded grinding wheels, and electrodeposited grinding wheels according to the type of bond used. Among them, resin-bonded grinding wheels are mostly used because they are fast and blunt and easy to use for high-energy grinding. As an organic binder used for a resin-bonded grinding wheel, a phenolic resin, an epoxy resin, and polyvinyl alcohol are generally mentioned, and a polyurethane resin, a melamine resin, etc. are mentioned as another organic resin. Focusing on durability and heat resistance, phenolic resins are mainly used. [0003] A resin bonded grinding wheel in which a phenolic resin is used as a binder is generally produced by filling a material mixture into a predetermined mold and performing pre...

Claims

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Application Information

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IPC IPC(8): B24D3/32
Inventor 友森章公
Owner KURE GRINDING WHEEL
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