Wire processing plant generally adopts tin feeding welding method, the right hand holding electric luo iron, the left hand holding solder wire, the operation steps are as follows:

1. Wire stripping: it should be noted that single wire should not be damaged to the conductor, multi-wire and shield wire without stop, otherwise it will affect the quality of the joint. When peeling multi-wire, it should be noted that the wire core is screwed into a spiral shape. Strip length shall be operated according to process data requirements.

2. Pre-welding: pre-welding is the key step of wire welding. When wire is hung tin, it is necessary to rotate tin side by side.

3. Heating: firstly heat the lead wire and welding pad of the components with the preheated luotiejiao.

4. Wire feeding: hold the tin wire left and right and send it to the heated welding place.

5. Leave: after the solder wire melts and slowly flows to the two-thirds area of the whole solder pad, quickly leave the solder wire and luo tietuo.

6. Solidification: after the reverse evacuation of luotietu, do not shake the components and circuit boards, let the welding spot naturally solidify. For components that are easy to be ironed, blow air on the welding to accelerate solidification.

7. Inspection: check the quality of welding, the amount of solder joint is moderate, the solder joint is bright and the welding is firm.