Wetting agent for preparing steel rail grinding tool, preparation method thereof and application of wetting agent

Abstract

The invention provides a wetting agent for preparing a steel rail grinding tool, a preparation method thereof and application of the wetting agent to preparation of the steel rail grinding tool. The wetting agent contains the constituents of phenolic resin, furan resin and diethylene glycol ether. The wetting agent has the advantages of being heat-resisting, high in coating efficiency, high in bonding strength and the like. The wetting agent can be used for manufacturing novel and durable composite grinding tool material, can also be used for friction material production under hot-pressing at the high temperature of 180 DEG C, and can improve strength performance and wear-resisting performance of the prepared composite grinding tool.

Description

technical field [0001] The invention relates to a wetting agent, in particular to a wetting agent specially used for preparing rail grinding abrasives, and a preparation method and application of the wetting agent. Background technique [0002] The main purpose of rail surface maintenance is a process of grinding the fatigue layer on the surface of the rail and the contour that does not match the hub. Rail maintenance has also gone through several stages. Initially, rails were hardly maintained on the surface from rail laying to use. In the past, rail maintenance in my country was only carried out for short-circuit sections and heavy defects, and a mill was manually driven to grind the weld back and forth; while For the maintenance of long sections, the rails are replaced, and the replacement cycle is about once every 30 to 50 years, during which the train running speed is less than 80 km / h. [0003] With the development of high-speed railways, it is required to carry out ma...

AI Technical Summary

Problems solved by technology

[0007] 2. It cannot meet the requirements of high-temperature hot-pressing process, and the abrasive tools will have cracks, foaming and other waste products under high temperature, which cannot meet the actual requirements

[0008] 3. The viscosity of the resin liquid at 25°C is generally greater than 500mPa·S, which is difficult to meet the dispersibility requirements

[0010] 1. Furfural has the same low viscosity as alcohol, which is below 10mPa·S at 25°C. Since it is difficult to form a film on the surface of the main material, it cannot wrap enough powder material, making the abrasive structure uneven, and even cannot produce some Abrasive products with special organization number;

[0011] 2. It does not have the effect of improving the bonding strength between the main material and the powder material, so it does not have any beneficial effect on improving the durability of the abrasive tool