Patent ID: 11952550
Assignee: XIAMEN JJD MACHINERY CO., LTD
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 6:
7. A method of spraying a lubricant for a copper alloy die-casting die, used for spraying the lubricant for the copper alloy die-casting die according to claim 1 onto the die by electrostatic spraying, specifically comprising the following steps:
S1: adding an electrostatic thinner at an amount of 1-3% of the total mass to the finished lubricant and stirring uniformly to the specified viscosity;
S2: measuring the resistivity of the mixed liquid with an electrostatic detector, and maintaining the resistivity within the range of 5-260 M;
S3: ensuring the operating environment to stay in slight negative pressure and have a relative humidity of 45-55% using an air circulation system;
S4: spraying on the die with a spray gun, wherein the voltage during the spraying is 80-90 kv, and the distance between the spray gun and a workpiece is kept at 35 cm.