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通过对碎煤齿环的失效分析，找出了影响齿环寿命的因素及薄弱环节，并研制成功了最优成分的耐磨材料和堆焊工艺，显著提高了生产率和企业的经济效。
The wear-resistant material with best composition and overlay welding process were successfully developed, and the productiviting and the economic benefit were obviously improved.
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