PCB科技 - PCB電路板生產工藝

PCB電路板生產工藝

1., open 材料

Purpose: According to the requirements of the 工程數據 MI of the PCB電路板(深圳PCB製造商), 將符合要求的大張板材切成小塊 電路板 生產電路板. 滿足客戶要求的小型板材.

process: large sheet - cutting board according to MI requirements - curium board - beer fillet edging - plate out

2, drilling

Purpose: According to the PCB電路板 engineering data, 在滿足所需尺寸的板材上的相應位置鑽取所需的孔徑.

process: stacking plate pin - upper plate - drilling - lower plate - inspection and repair

3, heavy copper

Purpose: Immersion copper is to deposit a thin layer of copper on the wall of the insulating hole by chemical method.

process: rough grinding - hanging board - automatic copper sinking line - lower board - dipping% dilute H2SO4 - thickened copper

4, graphics transfer

Purpose: Graphic transfer is to transfer the image on the production film to the PCB電路板.

Process: (blue oil process): grinding plate - printing the first side - drying - printing the second side - drying - exploding - developing shadow - inspection; (dry film process): hemp board - pressing film - standing - right Position-Exposure-Standing-Development-Check

5. Graphic plating

Purpose: Pattern electroplating is to electroplate a copper layer with the required thickness and a gold-nickel or tin layer with the required thickness on the bare copper skin or hole wall of the circuit pattern.

process: upper board - degreasing - second water washing - micro-etching - water washing - pickling - copper plating - water washing - pickling - tin plating - water washing - lower board

6, Remove the film

Purpose: Use NaOH solution to remove the anti-plating coating film to expose the non-circuit copper layer.

process: water film: insert rack - soak alkali - rinse - scrub - pass machine; dry film: release board - pass machine

7, etching

Purpose: Etching is to use a chemical reaction method to corrode the copper layer of non-circuit parts.

8, green oil

Purpose: Green oil is to transfer the graphic of the green oil film to the board to protect the circuit and prevent the tin on the circuit when welding parts.

Process: grinding plate-printing photosensitive green oil-curing plate-exposure-exposure; grinding plate-printing first side-drying plate-printing second side-drying plate

9, characters

Purpose: Characters are provided as a mark for easy identification.

Process: After the green oil finishes - cool and stand - adjust the screen - print characters - back

10, gold-plated fingers

Purpose: to plate a nickel-gold layer of required thickness on the plug finger to make it more hard and wear-resistant.

process: upper plate - degreasing - washing twice - micro-etching - washing twice - pickling - copper plating - washing - nickel plating - washing - gold plating

spray tin plate (a process in parallel)

Purpose: Multilayer circuit board spray tin is to spray a layer of lead tin on the bare copper surface that is not covered with solder mask to protect the copper surface from corrosion and oxidation to ensure good soldering performance.

process: micro-etching - air drying - preheating - rosin coating - solder coating - hot air leveling - air cooling - washing and air drying

11, molding

Purpose: Organic gongs, 啤酒委員會, 手鑼, hand-cutting methods to produce the shape required by the customer through die stamping or CNC gong machine

Description: The accuracy of the PCB電路板 數據鑼機板和啤酒板較高. 手鑼是第二個, 而最小的手工砧板只能用一些簡單的形狀製成.

12, test

Purpose: Through the electronic test fixture/飛針試驗, 檢測影響功能的缺陷，如不易目視發現的斷路和短路.

Process: upper mold - release board - test - pass - FQC visual inspection - unqualified - repair - return test - OK - REJ - scrap

13, final inspection

Purpose: Visually inspect the appearance of the board and repair minor defects to avoid problems and the outflow of defective boards.

具體工作流程：來料-檢查資訊-目視檢查-合格-FQA抽檢-合格-包裝-不合格-加工-檢驗合格