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Method for producing alumina sintered body, alumina sintered body, abrasive grains, and grindstone

An alumina quality and manufacturing method technology, applied in chemical instruments and methods, manufacturing tools, abrasives, etc., can solve the problems of large grinding ratio, less abrasive wear amount, and increased grinding amount.

Active Publication Date: 2013-07-03
RESONAC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) If the hardness of the abrasive grains becomes higher, the amount of grinding increases, so the grinding ratio becomes larger
[0007] (2) If the fracture toughness becomes higher, the amount of abrasive wear decreases, so the grinding ratio becomes larger

Method used

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  • Method for producing alumina sintered body, alumina sintered body, abrasive grains, and grindstone
  • Method for producing alumina sintered body, alumina sintered body, abrasive grains, and grindstone
  • Method for producing alumina sintered body, alumina sintered body, abrasive grains, and grindstone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11 and comparative example 1～7）

[0122] The above-mentioned alumina powder with a cumulative mass 50% diameter (d50) of 0.6 μm and a cumulative mass 50% diameter (d 50 ) is 0.75 μm of the above ilmenite powder to form TiO in the alumina sintered body 2 and Fe 2 o 3 Various mixtures were obtained by mixing so that the respective contents of each content became the values ​​shown in Table 7-1 and Table 7-2.

[0123] 300 g of an aqueous solution containing 5% by mass of polyvinyl alcohol and 600 g of pure water were added to the various mixtures, and pulverized and mixed with a ball mill (4 hours for Examples 1 to 5 and Comparative Examples 1 to 6, and 8 hours for others) ), prepared various homogeneous slurries with a mixture concentration of about 25% by mass.

[0124] Next, after drying the various slurries at 120°C for 24 hours, they were crushed in a mortar to obtain the cumulative mass 50% diameter (d 50 ) are various pulverized products below 300 μm. Each of these pulverized products was subjected to...

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Abstract

The present invention is a method for producing an alumina sintered body that satisfies (1) and (2) below, which is characterized by mixing and sintering ilmenite powder and alumina powder, and an alumina sintered body, abrasive grains and a grindstone obtained by said production method. (1) The total amount of the content of a titanium compound converted to TiO2, the content of an iron compound converted to Fe2O3 and the content of alumina is not less than 98 mass %. (2) The total amount of the content of the titanium compound converted to TiO2 and the content of the iron compound converted to Fe2O3 is 5 to 13 mass %.

Description

technical field [0001] The present invention relates to a method for producing an alumina sintered body, an alumina sintered body obtained by the production method, abrasive grains using the alumina sintered body, and a grinding wheel (grindstone: grindstone) using the abrasive grains. stone). Background technique [0002] Alumina-based sintered bodies exhibit excellent characteristics such as high hardness, high strength, high heat resistance, high wear resistance, and high chemical resistance, and are used in various industrial fields. In particular, it is used as a raw material (abrasive grain) for powerful grinding wheels in the steel industry. [0003] In addition, special alloys are frequently used as materials constituting parts of transportation equipment and industrial machinery mainly including automobiles. These special alloys are harder than ordinary SUS304, etc., so there is a demand for powerful grinding wheels with an unprecedented "grinding ratio" in the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10B24D3/00
CPCB24D3/06B82Y30/00C04B35/117C04B35/6263C04B35/62685C04B2235/3208C04B2235/3222C04B2235/3234C04B2235/3274C04B2235/3418C04B2235/3463C04B2235/349C04B2235/5436C04B2235/5445C04B2235/5454C04B2235/72C04B2235/77C04B2235/786C04B2235/85C04B2235/96B24D3/00C04B35/10C09K3/14
Inventor 富川伸一郎宫泽宏和家村武志
Owner RESONAC CORP
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