| Dust prevention is very important for current Hard Disk process. For current harddisk drive, the slider flying height is about10nm, but one normal particle size is more than0.3μm, once the high velocity slider (more than5400revolutions per minute) run into theparticle, it will cause slider injury or disk damage. This paper will study the particle sourceand cause, and then improve it.F3Hard Disk particle control main focus on "clean parts" and "clean environment",it is our particle control principle, this paper base on a large number of experiments tostudy the source of particle and take corrective action to improve it, good clean roomcontrol can meet the requirement of "clean environment", and the optimized ultrasoniccleaning parameter can get the "clean parts".The major work of this paper: make experiment to find and analyze the source of F3series hard disk particle, and then through change clean room handling procedure andbuild model line to improve hard disk production dust prevention effect, the result showhard disk particle status improved; after research the theory of ultrasonic cleaning, useorthogonal experiment to improve the parameter of ultrasonic cleaning and get the morecleaned parts; finally do comprehensive experiment of hard disk production, final resultshow the hard disk defect which caused by particle decreased rapidly. |
