What was before manual tin dipping?

Clean it with alcohol before welding, because alcohol can dissolve rosin and remove residual flux. Tin dipping refers to the phenomenon that the electrodes at the welding end are separated due to the diffusion and infiltration between two metals during welding.

Manual tin dipping procedure: 1. Non-tin-dipping personnel are not allowed to operate this process at will, and the operator must designate personnel to be trained as required before operation. 2. When starting the tin furnace, the operator must carry out three inspections and four inspections on the tin furnace. Three inspections: the furnace surface should be kept clean, the tin polyester should be flat and quantitative, and tools should be used for tin dipping. Fourth, look: whether the hood smokes normally, the current speed is room temperature, the thermometer of the tin furnace is normal and the position of the tin furnace is stable. 3. When operating, do not throw irrelevant materials into the tin furnace casually, do not put the human body too close to the tin furnace, and do not play while touching the tin. 5, the operator in strict accordance with the technical standards and requirements of smoking, to prevent tin cans from exploding. 6. When dipping tin, the clamp must firmly clamp the circuit board to prevent people from slipping into the tin furnace. Place the tin dipping clip in the specified position, including other tin dipping tools. It is forbidden to put it anywhere.