The result of practice indicated that its servicelife after intensifying with oxyacetylene spray welding was more than double of the new one intensifying with plasma spraying.

• 实际使用结果表明：排粉风机叶轮经修复和氧乙炔喷焊强化后，其使用寿命比原等离子喷涂强化的新叶轮提高1倍以上。