Welding and Processing Technology of SMT Components
This year, electronIC and mechanical equipment are striving for SMAll size and high quality, but it is necessary to use Surface Mount Technology to process chip components SMT chip factory components are small, light and easy to weld In addition, it is easier to disassemble SMT parts in maintenance and commissioning It can also improve the reliability and stability of the circuit and reduce unnecessary volume in the device
Newbies to electronic device enthusiasts always feel that SMT patch components are too small to weld The existing SMT components are easier to weld to the components, but in fact, the SMT patch components are easier to weld The welding method of parts in patch factory is described below
The basic tools required for welding SMT patch components include tweezers, electric soldering iron, tin absorbing tape, hot air gun, anti-static bracelet, rosin, alcohol solution and desk lamp magnifier. The following is a brief introduction to the selection, use and functions of the above tools.
Tweezers: If you do not embroider steel, use relatively sharp tweezers. You cannot use other tweezers that may have magnetic ends. This is because the magnetic tweezers make the parts adhere to the tweezers during welding.
Electric soldering iron: for tapered long-life soldering iron, it is recommended that the soldering iron radius be less than 1 mm, and two soldering irons should be prepared for use when disassembling parts.
Hot air gun: The electric soldering iron can be used to remove two or three end parts, but the hot air gun must be used to remove multiple lead parts. The hot-air gun can improve the reusability of separated parts and prevent damage to the gasket. In order to remove parts frequently, a hot air gun with good performance must be selected.
Tin absorption tape: When the lead wire of integrated circuit is short circuited, tin absorption tape is a good choice. At this time, tin absorption tape cannot be used.
You must choose a magnifying glass with a lamp and base (not a hand-held magnifying glass). Because one hand must be used to weld under the magnifying glass, turning on the light can make the vision clear and improve the visibility of the weld.
SMT processing technology
surface mount technology is complex. Many people have the opportunity to set up factories after learning the processing technology, especially in the mature electronic industry. Surface mount technology has created a preliminary scale industry. Many scientific and technological departments need to choose Shenzhen SMT for processing. Processing plant.
Electrostatic discharge countermeasures must be paid attention to during SMT processing. The design and reconfiguration standards contained therein are very important for electrostatic discharge sensitivity, treatment and protection measures in smt processing operations. If these criteria are not clear, you can search for and study relevant documents.
In the process of smt processing, the evaluation standard of welding technology is also completely consistent with the above standard. Welding is used for ordinary welding, manual welding and other relevant measures. The welding technology and standards to be used in smt processing can refer to the welding technology evaluation guide.
Of course, high-tech smt processing plants will make the processed products into 3D, and the processed effects will meet the standards and the appearance will be more perfect.
Cleaning operation are carried out after using smt processing and welding technology If safety cannot be guaranteed after smt processing and handling, it must be used as a strict standard The type and characteristics of detergent shall be selected during cleaning, and the integrity and safety of equipment and process shall be considered during cleaning
The above is the explanation given by the editor of PCB circuit board company.
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