THERMAL SPRAYING MATERIAL

摘要

PROBLEM TO BE SOLVED: To develop a thermal spraying repairing material which fulfills the requirements for increasing severity of using condition and for extending the life of the oven for a long period of time in a coke oven of the recent years and which does not hinder the operation.

SOLUTION: The thermal spraying material is one that contains a mixture of refractory particles and metal particles, and that is used by melting the mixture by an oxidation exothermic reaction of the metal particles through spraying the mixture onto a repairing body of a high temperature together with oxygen and by welding onto the repairing body, wherein the refractory particles have a particle size of 2 mm or smaller and contain as a main component a raw material having a composition of 65 wt.% or less SiO2and 35-70 wt.% Al2O3and 1 wt.% or less of an alkali component (Na2O, K2O), and the metal particles are formed by blending metallic silicon having a particle size of 150 μm or smaller.

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