In the production processLead-free solder pasteWhat problems may occur during reflow soldering operation or improper Settings? Generally, if the solder points do not melt or the brightness is insufficient, whether the best standard is reached directly affects the quality of the solder joints, thereby influencing the quality and performance degradation of the product. Therefore, it is very necessary to be equipped with a furnace temperature curve tester to control the temperature of reflow soldering, which can greatly save time and improve work efficiency. To ensure product quality and enhance enterprise efficiency, JJY Solder Paste Industry will now discuss the potential hazards it may cause!

1Potential hazards caused by the hot surface part of reflow soldering:

The transport chain, transport guide rails and the moving welded plates all transfer heat, and some surface temperatures can be reached66℃(150℉It may cause a certain degree of burns to human skin.

Safety measures and countermeasures when operating reflow soldering: When reflow soldering is in operation, wear thermal protection gloves or protective clothing. It is strictly prohibited to touch the transportation system and those coming out of the machine without wearing protective glovesPCBBe firm, but give wayPCBThe plate is cooled first; When maintaining any part of the machine, protective clothing should be worn first. Note: Do notPCBAny object other than the board enters the machine.

2Internal cleaning of solder paste exhaust gas after reflow soldering operation

Installation of reflow soldering exhaust gas treatment system: As the gases produced during reflow soldering operation may be harmful to the body, a suitable filtration and monitoring exhaust gas system should be installed.

Air quality inspection: Regularly monitor the air quality of the workplace environment to enhance the safety of the working environment in the operation site.

3The potential hazards of fire or smoke during reflow soldering operations

Motor: Under normal circumstances, during operation, the motor is prone to generating sparks due to friction, which may cause a fire in the surrounding environment.

Heat source: If the plate stays in the machine for too long, it may ignite the weldingPCBBoard.

Protective measures: To prevent possible fires during reflow soldering operations, good fire extinguishing techniques should be adopted and fire prevention facilities should be installed in accordance with local security regulations. Properly protect flammable materials and do not put flammable items inside or near the machine. Keep the reflow soldering machine clean. Do not leave the printed circuit board inside the machine and make sure that all the motors are operating normally.

4Potential steam and gas hazards during reflow soldering operations

During the normal operation of reflow soldering, if the board falls into the furnace body, it may cause combustion and release harmful gases. The printed circuit board and rosin agent will also emit gases or vapors. When the exhaust system fails to work properly, these gases or vapors will accumulate in the furnace bed, forming a certain pressure difference with the outside, and will be discharged into the working area through the board inlet end and the board outlet end. Protective measures: Before starting the reflow soldering, connect the exhaust system properly and ensure it is operating normally.

Summary: To be thereSMTWhen working in a surface mount technology (SMT) factory, it is essential to master the relevant knowledge of reflow soldering, operate reflow soldering correctly, and carry out regular maintenance and upkeep of reflow soldering to avoid any harm to our health! Warmly welcome all friends to consult Shenzhen JJY Industrial Production High-tech Co., LTD. Let's learn and grow together!