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<p>Many people may not know what welding steps are commonly used in <a href="https://www.mcccable.com/wire-harness" rel="noopener noreferrer" target="_blank">wire harness </a>processing. Today, we will tell everyone. Wire processing factories generally use the soldering method, holding the electric Luo iron in the right hand and the solder wire in the left hand. The operation steps are as follows:</p><p><br></p><p>1. Stripping: When stripping the wire with a wire stripper, you should pay attention to the single-stranded wire and the wire should not be damaged. The multi-strand and shielded wire will not be used, otherwise the quality of the joint will be affected. When stripping the multi-stranded wire, pay attention to twist the core into Spiral. The stripping length is operated according to the requirements of the process data.</p><p><br></p><p>2. Pre-welding: Pre-welding is a key step in wire welding. When the wire is tinned, it should be rotated while tinning. The rotation direction is the same as the twisting direction. The "candle wick effect" of multi-stranded wires should be paid attention to, that is, the solder enters the insulating layer. Inside, the flexible cord becomes hard and easily leads to connector failure.</p><p><br></p><p>3. Heating: First use the preheated Luotie head to heat the component leads and pads.</p><p><br></p><p>4. Wire feeding: Hold the tin wire left and right and send it to the heated welding place.</p><p><br></p><p>5. Leaving: After the solder wire melts and flows slowly to two-thirds of the entire pad area, quickly withdraw the solder wire and Luotie head.</p><p><br></p><p>6. Solidification: After the Luotie head is evacuated, do not shake the components and circuit boards. The solder joints should be allowed to solidify naturally. For components that are easy to burn, air can be blown to the welding to accelerate the solidification.</p><p><br></p><p>7. Inspection: To check the quality of welding, it is required that the amount of tin in the solder joint is moderate, the solder joint is bright, and the welding is firm.</p><p><br></p>
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