1: Check whether there is any debris in the reflow soldering machine, keep it clean, ensure safety, and then turn it on, and select the production program to turn on the temperature setting.
2: Since the width of the guide rail of the reflow soldering machine should be adjusted according to the width of the PCB, it is necessary to open the air transport, mesh belt transport, and cooling fan.
3: The temperature of the reflow machine is controlled at the highest (245±5)℃ with lead, and the furnace temperature of lead-free products is controlled at (255±5)℃, and the preheating temperature is 80℃~110℃. According to the parameters given by the welding production process, the computer parameter settings of the reflow soldering machine are strictly and strictly controlled, and the parameters of the reflow soldering machine are recorded on time every day.
4: Turn on the temperature zone switches in sequence. When the temperature rises to the set temperature, you can start to pass, PCB, board, and pay attention to the direction of the board. Ensure that the distance between two consecutive boards of the conveyor belt is not less than 10mm.
5: Adjust the width of the conveyor belt of the reflow soldering machine to the corresponding position, the width and flatness of the conveyor belt are consistent with the circuit board, and check the batch number of the material to be processed and related technical requirements.
6: The small reflow soldering machine must not take too long and the temperature is too high to cause copper and platinum blistering; the solder joints must be smooth and bright, and all the pads of the circuit board must be tinned; the poorly soldered lines must be reworked, and the second reflow must be After cooling.
7: To wear gloves to access the soldered PCB, only touch the edge of the PCB, sample 10 samples per hour, check the bad condition, and record the data. In the production process, if it is found that the parameters cannot meet the production requirements, the parameters cannot be adjusted by themselves, and the technician must be notified immediately.
8: Measure the temperature: insert the sensors into the receiving socket of the tester in turn, turn on the power switch of the tester, put the tester in the reflow soldering and reflow soldering with the old PCB board, take it out and use the computer to read the tester in too wide The temperature data recorded during the reflow soldering process of Shengde is the original data of the temperature curve of the reflow soldering machine.
9: Sort the welded boards according to the order number, name, etc., to prevent bad mixing.
