Knife stone and preparation method thereof

Abstract

The invention provides a knife stone, which is prepared from the following components in parts by weight: 14 to 23 parts of a first particle material, 55 to 69 parts of a second particle material, 9 to 14 parts of a third particle material, 7 to 10 parts of a powder material and 0.4 to 1 part of a liquid binding agent, the particle size of the first particle material ranges from 0.425 mm to 0.85 mm, the particle size of the second particle material ranges from 0.25 mm to 0.425 mm, and the particle size of the third particle material ranges from 0.15 mm to 0.25 mm. The knife stone is high in density and uniform in structure, has good mechanical shock resistance, wear resistance and self-sharpening performance, is beneficial for cutting a knife, has high-content chromic oxide, and can greatly improve the recovery value of sediment when being used for grinding chromic oxide bricks.

Description

technical field [0001] The invention relates to a sharpening tool, in particular to a sharpening stone and a preparation method thereof. Background technique [0002] Dense chromium oxide material is widely used as the hot surface lining material of alkali-free glass fiber tank kiln due to its excellent corrosion resistance, less pollution to molten glass and long service life. These dense chromium oxide bricks lined with glass liquid require high surface flatness, so the products need to be finished into the required shape and size before being put into use. During the finishing process, the processed chromium oxide bricks that are ground, cut or chipped off by the tool enter the cooling liquid. After the liquid enters the sedimentation tank, the chromium oxide in it is precipitated and forms a chromium oxide precipitate at the bottom of the tank, which can be re- use. [0003] Due to the high hardness and high density of dense chromium oxide bricks (≥4.4g / cm 3 ), when i...

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Problems solved by technology

The use of the whetstone will be accompanied by the consumption of materials, and the lost materials will then enter the chromium oxide precipitate, resulting in a decrease in the concentration of chromium oxide in the precipitate, which is not conducive to recycling

[0004] In order to increase the concentration of chromium oxide in the precipitate and ensure the sharpness of the tool for processing chromium oxide bricks, it may be considered to add a high content of chromium oxide to the raw materials for preparing the whetstone. However, chromium oxide itself is brittle and resistant to mechanical shocks. The ability is poor, and the wear resistance is also poor, which makes it difficult for the prepared chromium products to have the function of a whetstone

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