FLAME-SPRAYING POWDERY REPAIR MIXTURE

摘要

A thermal spray mending material effective for applying a dense thermal spray mending layer having a high crystallization ratio immediately after thermal spraying in a broad thermal spray condition can be provided. A flame spray mending material with an oxide concentration of 89% by weight or more of SiO2, more than 2.0 to 4.0% by weight of Na2O and/or more than 0.2 to 4.0% by weight of Li2O, having a 80% or more crystallization ratio after thermal spraying and a 200 kgf/cm<2> or more compression strength. Further, a thermal spray mending material effective for applying a dense thermal spray mending layer having a high crystallization ratio immediately after thermal spraying even if a slight amount of CaO is contained can be provided. A flame spray mending material with an oxide concentration of 89% by weight or more of SiO2, more than 2.0 to 5.0% by weight of CaO, 0.5 to 4.0% by weight of Na2O and/or more than 0.2 to 4.0% by weight of Li2O, and 1.0% by weight of less of Al2O3, having a 80% or more crystallization ratio after flame spraying and a 200 kgf/cm<2> or more compression strength.