Only limited to single and double sided board copying, precautions: multi-layer boards also enjoy the above discounts, rigid-flex board supply chain precautions.
Check if there is any greasy or dirty use on the board and accessories, without proper rules or irregular cracks.
In case of problems, the furnace temperature should be between 85 degrees and 85 degrees. Under normal circumstances, high melting welding occurs.
The soldering temperature should not exceed 100 times that of electronic components. Therefore, the temperature of the selected solder wire should be between 260 ° C and 190 ° C.
There should be no tin near the furnace. When soldering directly, preheating must be done first, and the time for soldering should exceed one hour.
● The air tightness between bonding pads of printed boards is poor, especially for polytetrafluoroethylene (PTFE) printed boards, air reflow soldering welding preferring to use lead-free reflow welder will reduce this failure.
● The temperature of reflow soldering out of the reflow soldering furnace is far lower than the preheating temperature, which makes the solder of the printed board hygroscopic and deformed, and the components and parts are subject to thermal deterioration, which makes the printed board burst, crack, scorch, deformation, device or pin oxidation for many times, causing the printed board bending, deformation, displacement, temperature rise overshoot, and substrate warping and faulty soldering.
Check whether the ink on the surface of the printed board should not melt into other soldering fluxes on the substrate. Ensure that the substrate is clean, free from oxidation, and stored for more than three months.
The use of hot solvents is not allowed for the removal of lead-free soldering tin (lead), and it should be recognized by the manufacturer and the validity period should be strictly controlled.
Xinchang Electronic Technology specializes in Wuhan SMT mounting, PCB circuit board welding, PCB circuit board mounting, etc., with quality assurance!
PCBA electronic product processing customization, as long as we provide raw and auxiliary materials, we can provide professional services worldwide.

SMT chip processing manufacturers provide one-stop PCBA processing services, including raw material procurement, PCB, SMT chip, DIP plug-in, PCBA testing, finished product assembly, and other electronic complete PCBA processing.
After focusing on traditional coverage processes, small factories have now shortened the process time of raw material procurement, processing, SMT, and testing to the cycle of raw material PCBA processing.
To provide the most valuable delivery time for customer quality, shorten the delivery cycle, and achieve sustainable development, we can expand and win the future together.
Between 10-8x10-163, it has a series of automation features for multiple models, such as constant temperature and humidity machines, inclined temperature assembly machines, high-precision high-speed punching machines, fully automatic optical detectors, X and flat plate detectors, and various models.
Micro dust analyzer, multi-channel data measurement system in the purification room, semiconductor purging ultrasonic tester, micro zone purification equipment, semiconductor field generator, positive and negative pressure dampers, centrifugal fan, condenser, and super cleaner.
Optical testing, X-ray non-destructive testing, rubber cracking, electronic component drilling, lighting, structural component drilling, nano film drilling, fiber optic drilling, LCD splicing, precision components around computers, medical device X-ray, target surface treatment, pharmaceuticals, electronic industry, rubber forming drilling, vulcanized rubber and other non-destructive testing, electronic component drilling, testing, semiconductor production drilling, printed circuit board drilling, glass thickness measurement Ceramic drilling, plastic processing drilling, PCB solder mask characters, IC component characters, ACC processing characters, RCC processing material characters, RCC processing metal film (ICP) characters, RCC processing drilling, metal film (CPCB) characters, RCC processing metal film (COF) characters, 3D printing metal film (COF) characters, plastic bottle characters, RFCC processing metal film (RCP) characters, zirconia plastic font characters, TCX printing metal film (COF) characters, TCX-TC touch patterns Metal resistors, transparent metal film (COF) characters, patterns, metal electrode adhesive film characters, thin film resistors, metal electrode adhesive film patterns, metal circuit board patterns, metal units, vacuum plastic films, clamp blank paper, etc.