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通过对中心扩锥采用各种材质对比分析，研究确定耐热抗磨中心扩锥材质。经过电厂运行实践表明，该中心扩锥高温氧化变形小、抗磨性好、使用寿命长。
Expansion of the center through a variety of materials used in comparative analysis to determine the heat-resistant anti-wear center expansion cone material. After the operation of power plant shows that the expansion center high temperature oxidation deformation of small, good wear resistance, long service life.