It is proposed to get the piercing plug sprayed with a plasma coating in a bid to enhance its surface properties, and thus prolong its service life, and cut down the operation costs as well.

提出采用在顶头上喷涂等离子涂层的方法来提高穿孔顶头表面性能，从而提高其使用寿命，降低生产成本。

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The results show that the as-sprayed conventional ceramic coating has a typical lamellar stacking characteristic.

结果表明：用常规等离子喷涂法制备的陶瓷涂层为典型的层状堆积特征；

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The surface of mixer body is sand-blasted for rust-cleaning. The coating is sprayed firmly with high-grade paint of abrasion-resistant so as to extend the lifetime of coating.

搅拌机的桶体表面均经过喷砂处理，除锈彻底，漆膜牢固，并采用优质耐磨漆喷涂，大大延长了漆面的使用寿命。

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