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粉末冶金靜電模壁潤滑中復合潤滑劑的靜電荷電與潤滑特性

Eloctrostatic and Lubricant Performances of Compound Lubricants in P/M Elec-trostatic Die Wall Lubrication

  • 摘要: 實驗研究了在粉末冶金靜電模壁潤滑技術中復合潤滑劑——50%EBS蠟+50%石墨,50%EBS蠟+50%BN(質量分數)的靜電荷電與潤滑特性.結果表明:BN的加入能改善EBS蠟的荷電性能,而石墨的加入卻使其變差;50%EBS蠟+50%石墨混合粉潤滑效果極好,能獲得相當高的壓坯密度,而50%EBS蠟+50%BN混合粉的效果卻要差得多;模具溫度為150℃(超過EBS蠟熔點)時,50%EBS蠟+50%E墨混合粉潤滑效果變差,而50%EBS蠟+50%BN混合粉則影響不大.

     

    Abstract: The electrostatic and lubricant performances of compound lubricants -50% EBS wax + 50% graphite and 50% EBS wax + 50% BN in P/M electrostatic die wall lubrication were investigated. The results show that the addition of BN can improve the charging performance of EBS wax, while graphite makes it worse. The combination of 50% EBS wax and 50% graphite exhibits excellent lubricant performance, resulting in a fairly high green density, but the mixture of 50% EBS wax and 50% BN has less beneficial effect. When the mold temperature is 150℃, which is above the melting point of EBS wax, the lubricant performance of the 50% EBS wax + 50% graphite becomes worse, while the 50% EBS wax + 50% BN is little influenced.

     

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