Preparation method for common casting iron-based ceramic composite vertical grinding roller

Abstract

The invention discloses a preparation method of a vertical mill roller made of ordinary cast iron-based ceramic composite material. Provided is a method for preparing a vertical mill roller made of ordinary cast iron-based ceramic composite material, which is beneficial to the impregnation of high-chromium cast iron in molten iron, one-time pouring molding, simple process implementation, adjustable composite layer shape and thickness, and improved wear resistance. It includes the following steps: 1) Select 2-4mm fused zirconia corundum particles; 2) Prepare the arc-shaped honeycomb zirconia corundum ceramic particle preform from the above fused zirconia corundum particles, and cool it for use; 3) Arrange the prepared preforms side by side Place it on the arc surface of the sand mold cavity of the vertical mill roller, and fix it with the core support; 4) After closing the box, use a hot air blower to preheat the cavity, then cast it, and take it out of the box; 5) Put the above The obtained iron-based ceramic composite material vertical grinding roller is subjected to heat treatment. The invention has simple process; the composite grinding roller is formed by one-time pouring; the production process can realize mechanized operation, the production cost is low, and the production efficiency is high.

Description

technical field [0001] The invention relates to a preparation method of a vertical mill roller made of ordinary cast iron-based ceramic composite material. Background technique [0002] Metal-based wear-resistant materials are widely used in electric power, mining, metallurgy, building materials and other industries due to their good thermal conductivity and impact resistance. At present, the metal wear-resistant materials commonly used in the preparation of vertical grinding rollers include high-chromium cast iron, high-manganese steel, etc. High-chromium cast iron has high hardness and certain toughness, and is widely used in mining, metallurgy, building materials and chemical industries. Researchers have done a lot of work on improving the mechanical properties and wear resistance of high chromium cast iron and expanding its application, and achieved good results. However, when high-chromium cast iron is applied to vertical mill rollers of coal mills, there are still sho...

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Problems solved by technology

[0004] Ordinary pouring method requires secondary pouring or even more, the process implementation is more complicated, and cracks are prone to appear at the splicing parts of the wear-resistant composite inserts, and the strength of the grinding roller is insufficient; the perfo

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