Former chemical nickel gold treatment A. Objective: to remove the need for Nickel gold pads and IC pin by grinding method, BGA position oxide, debris, or because the solder process development without a net residual chemical solvents, to provide the necessary next step ENIG clean, uniform, fine copper surface chemical nickel gold pretreatment A. Objective: to remove the need for Nickel gold pads and IC pin by grinding method, BGA position oxide, debris, or because the solder process development without a net residual chemical solvents, to provide the necessary next step ENIG clean, uniform, fine copper surface according to my experience in the work, for each of the manufacturing process in use and configuration of the brush roll made some conclusions, and is willing to discuss the issue with the concerned ground this problem friends. 1) After drilling deburring (PTH) A. Objective: to remove burr hole edge by grinding method, the hole drilled plate surface dirt and debris, oxide, for the electroless copper process to provide clean surface. B. Requirements: grinding plate surface roughness after the passing of which roughness control (2.0--3.5um), the board no serious scratches, mill plate, copper Hole Hole no warped and no copper, cement grinding machine , burr removal good times microscopic no burr, grinding machines, board clean without glue stains, oxides. C. Frequently Asked Questions: If bad or excessive grinding can cause scratches board, the board oxidation, debris removal without a net, Hole copper warped and no copper, causing heavy copper plating burr off or worse. D. Parameters: 2 × 240 # + 2 × 320 # (sic), wear scar: 10 ± 2mm, water break: 15 seconds, roughness: 1.5-3.5um2) dry pretreatment (DryFilm) Film) mill wheel, Acer Friends Lean Automation (certification), the mill provided by the Friends of the Shenzhen-Hong Lean Automation Limited. Friends Lean Automation Co., Ltd. Shenzhen-Hong (www.winsole.cn) (www.hy978.com) is an industry leader in Shenzhen, Guangdong, industrial automation control systems and equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness , the maximum meet customer needs. Friends of Lean leadership macro automation with the staff warmly welcome all inquiries negotiations to create macros Friends Lean Automation better future.