High-durability ceramic grinding tool

Abstract

The invention discloses a high-durability ceramic grinding tool which is characterized by comprising the following components in parts by weight: 11-27 parts of zirconite, 31-50 parts of calcite, 3-14 parts of ethylene copolymer elastomer, 1-9 parts of closed-cell perlite, 15-45 parts of borate glass, 5-17 parts of solid paraffin, 11-25 parts of tourmaline concentrate micropowder, 3-4 parts of molybdenum disilicide, 34-61 parts of spodumene, 11-31 parts of mica, 3-5 parts of zinc oxide, 5-12 parts of ferric sodium pyrophosphate, 1-3 parts of calcium hydrogen phosphate and 5-9 parts of cryolite. The high-durability ceramic grinding tool has the advantages of sharp grinding grains, low trimming frequency, favorable sharpness, low grinding temperature, favorable toughness, low abrasion, high durability and long service life, and can be used for high depth, roughing feed, heavy load and high efficiency grinding.

Description

technical field [0001] The invention relates to a ceramic grinding tool with high durability. Background technique [0002] The new ceramic corundum abrasive is a high-purity corundum abrasive with fine crystal structure synthesized by unique ceramic technology. This kind of abrasive is synthesized by Sol-gel (sol-gel) process and sintered. Ordinary fused corundum abrasives are made of industrial alumina as raw material, melted in an electric arc furnace, crushed, ground, and classified to obtain corundum abrasives of different particle size levels. The preparation methods of the two abrasives are different, so they are quite different in structure and performance. Specifically in [0003] As follows: [0004] In terms of microstructure, ordinary fused corundum abrasives only contain a small amount of single crystal (sometimes a single crystal) in each abrasive grain, and the crystal size is about 50 μm or larger, while each abrasive grain of the new ceramic corundum abra...

AI Technical Summary

Problems solved by technology

[0006] The preparation process of new vitrified corundum abrasive tools with vitrified bond is basically the same as that of ordinary corundum abrasive tools with vitrified bond. However, due to the requirements of the structure and speed of use of new vitrified corundum abrasives, the traditional common vitrified bond can no longer meet the requirements of new ceramic corundum abrasives. Preparation requirements for corundum abrasives

On the one hand, the sintering temperature of traditional ceramic bond ordinary corundum abrasives is around 1250°C, while the new ceramic corundum abrasives will be affected by high temperature during high temperature firing, resulting in grain growth and destroying their original microstructure and performance. As a result, it loses or loses its superior characteristics in grinding and use, thereby affecting its proper grinding effect, so it should generally be fired at a temperature lower than 1000 ° C; on the other hand, the traditional ceramic bond ordinary corundum abrasive The use speed generally does not exceed 60m / s, and the use speed of the new ceramic corundum abrasive tools must meet the use speed requirements of 80-120m / s. Higher, and at the same time, the price can not increase too much compared with the traditional vitrified bond