The welding temperature is too low or the speed of the conveyor belt is too fast, so that the viscosity of the molten solder is too large. The temperature of tin wave is 250 + 5 C, and the welding time is 3-5s. According to the size of PCB, whether the multilayer board, the number of components, whether there are mounting components and so on, set the preheating temperature. The decrease of tin content in the solder or the excessive impurity content in the solder (CU < 0.08%) make the viscosity of the molten solder increase and the fluidity deteriorate. When the ratio of tin is <61.4%, some pure tin can be added properly, and the solder should be replaced when the impurity is too high. The flux of the flux is poor or the specific gravity is too small. Replace the flux or adjust the proper proportion. Welding disks, inserts and pins are poor in solderability. Improve the quality of PCB, use components first and first, do not store in damp environment. There are too many solder residues. The residue should be cleaned after the work is finished every day.
Hangzhou NeoDen Technology Co.,Ltd was established in 2010. As a developer and manufacturer of pick and place machine, NeoDen provides SMT solutions all over the globe to a wide range of companies from start-ups to large multinational organizations, especially start-up owners, electronics engineers and lab researchers, those who want to do prototyping and medium-large batch production with a limited budget.
NeoDen is not only specialized in Pick & Place machine, but also help to provide reflow oven, stencil printer and conveyor to satisfy customer’s need of a completed SMT production line.
So far, more than 5,000 PnP machines have been sold to a wide range of industries from IoT industry, LED industry, electronics industry, security industry and communication industry, etc.
More than 10 oversea agents are set up to provide effecient local support in EU area, India, Russia, Japan, South Korea, Chile, Columbia, Iran, Brazil and Turkey.
The solutions we design and manufacture incorporate the best operational practices, technical innovations, and global standards while preserving existing investments.
Playing a role in meeting these needs is both a challenge and a privilege.
Hangzhou Neoden Technology Co.,Ltd