High-temperature wear-resistant self-lubricating side guide plate lining plate and machining method thereof

Abstract

The invention discloses a high-temperature wear-resistant self-lubricating side guide plate lining plate and a machining method thereof. The side guide plate lining plate is of a sandwich structure, a middle base plate is made of 45 steel, high-temperature wear-resistant self-lubricating layers obtained through laser cladding are arranged on the two sides of the middle base plate, each high-temperature wear-resistant self-lubricating layer is composed of 85-97 wt% of high-entropy alloy, 1-5 wt% of hexagonal boron nitride and 2-10 wt% of eutectic BaF2 / CaF2, the high-entropy alloy is NiFeAlCoCrB<x> and is composed of Ni, Fe, Al, Co and Cr which are equal in mole and B with the mole content of x, x ranges from 0.02 to 0.1, and the high-temperature wear-resistant self-lubricating layers are formed on the surface of the middle base plate through two paths of laser cladding. The hardness of the lining plate is improved by adopting the high-entropy alloy, the high-temperature lubricity of the lining plate is improved by adopting boron nitride and eutectic BaF2 / CaF2 together, and the problems that a side guide plate lining plate is fast in abrasion and short in service life and the end face of strip steel is strained during hot rolling of the strip steel are effectively solved.

Description

technical field [0001] The invention belongs to the field of metallurgical materials, and in particular relates to a high-temperature wear-resistant self-lubricating side guide liner and a processing method thereof. Background technique [0002] In front of the coiler of the hot-rolled steel strip production line, the side guide plate liner is the key equipment in the coiling area of ​​the main rolling line of the hot-rolled mill. Clamp the strip steel to reduce the tower shape and staggered layer of the steel coil. According to different steel types and specifications, the side guide plate clamps the strip steel with different preset pressures, resulting in the lining plate and belt installed at the contact part of the side guide plate and the strip steel The steel produces relative sliding friction. During rolling, the temperature of the steel strip is high, the maximum temperature can reach 1100°C, and the passing speed of the steel strip is high, which can reach 15m / s. ...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a high-temperature wear-resistant self-lubricating side guide liner, which solves the problems of fast wear, short life and strain on the end face of the side guide when hot-rolling strip steel, which not only improves the high-temperature strength but also reduces Friction coefficient, while improving the service life of the side guide plate liner, it can prevent the phenomenon of wire drawing on the end face of the strip steel and ensure the integrity of the edge