Oct. 11, 2021
PCB developing machine is a printing processing equipment that partially or completely completes the development, washing, gluing, drying and other processes of the dried printing plate through semi-automatic and full-automatic procedures.It is generally composed of transmission system, developing system, flushing system, drying system, program control system, etc.
Oct. 08, 2021
CNC drilling machine and CNC milling machine are important equipment in PCB processing. The equipment is expensive. The selection of CNC machine tools is very important not only for operation, process setting and maintenance, but also for the quality of products.
Sep. 30, 2021
It is reported that the short-term PCB upstream quotation will rise again. The "dual control of energy consumption" policy has been strongly implemented in China, and the impact of power restriction has continued to expand. The scope has been extended to more than 10 provinces and regions such as Jiangsu, Zhejiang and Guangdong. The affected people have expanded from heavy industry to light industry and solar energy, and the PCB industry has also been affected.
Sep. 29, 2021
Drilling machine refers to a machine tool that mainly uses a drill bit to process holes on a work piece. Milling machine mainly refers to the machine tool that uses milling cutter to process various surfaces of work piece.
Sep. 28, 2021
At present, there are many kinds of inks in the market. PCB inks are mainly divided into circuit inks, solder resist inks and character inks. 1. circuit ink As a barrier to prevent corrosion of the circuit, it protects the circuit during etching. It is generally liquid photosensitive. There are acid corrosion resistance and alkali corrosion resistance. Alkali resistance is more expensive. This layer of ink should be dissolved with alkali after corrosion out of the line. 2. Solder resist ink It is painted on the line after the line is finished to protect the line. There are liquid photosensitive, heat curing and ultraviolet hardening. The pad is reserved on the board to facilitate the welding of components and play the role of insulation and anti-oxidation. 3. Legend ink It is used to mark the surface of the board, such as the symbol of components. It is generally white. In…
Sep. 27, 2021
Hot air leveling, also known as hot air solder leveling (commonly known as tin spraying), is a process of coating molten tin (lead) solder on the surface of PCB and leveling (blowing) with heated compressed air to form a coating layer that not only resists copper oxidation, but also provides good solderability. Hot air leveling solder and copper form copper tin intermetallic compound at the joint. PCB shall sink in molten solder during hot air leveling;The air knife blows the liquid solder before the solder solidifies;The wind knife can minimize the meniscus of solder on the copper surface and prevent solder bridging.
