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

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.